Fort Smith weather by month

Check out Fort Smith weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Fort Smith (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
48°F maximum daytime temperature in January in Fort Smith48
54°F maximum daytime temperature in February in Fort Smith54
63°F maximum daytime temperature in March in Fort Smith63
73°F maximum daytime temperature in April in Fort Smith73
81°F maximum daytime temperature in May in Fort Smith81
88°F maximum daytime temperature in June in Fort Smith88
93°F maximum daytime temperature in July in Fort Smith93
93°F maximum daytime temperature in August in Fort Smith93
84°F maximum daytime temperature in September in Fort Smith84
75°F maximum daytime temperature in October in Fort Smith75
63°F maximum daytime temperature in November in Fort Smith63
52°F maximum daytime temperature in December in Fort Smith52
Min temperature (night-time)
25°F minimum night-time temperature in January in Fort Smith25
30°F minimum night-time temperature in February in Fort Smith30
39°F minimum night-time temperature in March in Fort Smith39
48°F minimum night-time temperature in April in Fort Smith48
57°F minimum night-time temperature in May in Fort Smith57
66°F minimum night-time temperature in June in Fort Smith66
70°F minimum night-time temperature in July in Fort Smith70
68°F minimum night-time temperature in August in Fort Smith68
61°F minimum night-time temperature in September in Fort Smith61
48°F minimum night-time temperature in October in Fort Smith48
37°F minimum night-time temperature in November in Fort Smith37
28°F minimum night-time temperature in December in Fort Smith28
Heat & Humidity
No heat & humidity in January in Fort Smith0
No heat & humidity in February in Fort Smith0
No heat & humidity in March in Fort Smith0
No heat & humidity in April in Fort Smith0
Low heat & humidity in May in Fort SmithL
High heat & humidity in June in Fort SmithH
Very high heat & humidity in July in Fort SmithVH
Very high heat & humidity in August in Fort SmithVH
Moderate heat & humidity in September in Fort SmithM
No heat & humidity in October in Fort Smith0
No heat & humidity in November in Fort Smith0
No heat & humidity in December in Fort Smith0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & UV index in Fort Smith

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Fort Smith10
11 hours of daylight per day in February in Fort Smith11
12 hours of daylight per day in March in Fort Smith12
13 hours of daylight per day in April in Fort Smith13
14 hours of daylight per day in May in Fort Smith14
15 hours of daylight per day in June in Fort Smith15
14 hours of daylight per day in July in Fort Smith14
13 hours of daylight per day in August in Fort Smith13
12 hours of daylight per day in September in Fort Smith12
11 hours of daylight per day in October in Fort Smith11
10 hours of daylight per day in November in Fort Smith10
10 hours of daylight per day in December in Fort Smith10
UV Index (Maximum)
UV (maximum) index 3 (Moderate) in January in Fort Smith3
UV (maximum) index 4 (Moderate) in February in Fort Smith4
UV (maximum) index 6 (High) in March in Fort Smith6
UV (maximum) index 8 (Very High) in April in Fort Smith8
UV (maximum) index 9 (Very High) in May in Fort Smith9
UV (maximum) index 10 (Very High) in June in Fort Smith10
UV (maximum) index 10 (Very High) in July in Fort Smith10
UV (maximum) index 9 (Very High) in August in Fort Smith9
UV (maximum) index 8 (Very High) in September in Fort Smith8
UV (maximum) index 5 (Moderate) in October in Fort Smith5
UV (maximum) index 3 (Moderate) in November in Fort Smith3
UV (maximum) index 2 (Low) in December in Fort Smith2

Rainfall in Fort Smith

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
7 days with some rainfall in January in Fort Smith7
7 days with some rainfall in February in Fort Smith7
10 days with some rainfall in March in Fort Smith10
10 days with some rainfall in April in Fort Smith10
11 days with some rainfall in May in Fort Smith11
8 days with some rainfall in June in Fort Smith8
7 days with some rainfall in July in Fort Smith7
7 days with some rainfall in August in Fort Smith7
8 days with some rainfall in September in Fort Smith8
7 days with some rainfall in October in Fort Smith7
7 days with some rainfall in November in Fort Smith7
8 days with some rainfall in December in Fort Smith8
Average monthly rainfall (inches)
2.2 inches monthly rainfall in January in Fort Smith2.2
2.8 inches monthly rainfall in February in Fort Smith2.8
4.1 inches monthly rainfall in March in Fort Smith4.1
4.4 inches monthly rainfall in April in Fort Smith4.4
5.8 inches monthly rainfall in May in Fort Smith5.8
3.9 inches monthly rainfall in June in Fort Smith3.9
3.5 inches monthly rainfall in July in Fort Smith3.5
3.1 inches monthly rainfall in August in Fort Smith3.1
4.2 inches monthly rainfall in September in Fort Smith4.2
3.7 inches monthly rainfall in October in Fort Smith3.7
3.9 inches monthly rainfall in November in Fort Smith3.9
3.2 inches monthly rainfall in December in Fort Smith3.2

More about Fort Smith

Fort Smith by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Arkansas (Fort Smith) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Fort Smith?

Fort Smith has a temperate climate with hot summers and some rainfall in all months.

Fort Smith weather in January

Expect daytime maximum temperatures of 48°F in Fort Smith, Arkansas in January based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 2.2 inches of rainfall in the month.

  • 48°F maximum daytime temperature in January in Fort Smith48
    48°F max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in January in Fort Smith7
    7 days with some rainfall
  • 25°F minimum night-time temperature in January in Fort Smith25
    25°F min night temperature
  • 10 hours of daylight per day in January in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in January in Fort Smith0
    No heat & humidity
  • 2.2 inches monthly rainfall in January in Fort Smith2.2
    2.2 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in January in Fort Smith3
    3 (Moderate) UV index

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Fort Smith weather in February

Expect daytime maximum temperatures of 54°F in Fort Smith, Arkansas in February based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 2.8 inches of rainfall in the month.

  • 54°F maximum daytime temperature in February in Fort Smith54
    54°F max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in February in Fort Smith7
    7 days with some rainfall
  • 30°F minimum night-time temperature in February in Fort Smith30
    30°F min night temperature
  • 11 hours of daylight per day in February in Fort Smith11
    11 hours of daylight per day
  • No heat & humidity in February in Fort Smith0
    No heat & humidity
  • 2.8 inches monthly rainfall in February in Fort Smith2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in February in Fort Smith4
    4 (Moderate) UV index

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Fort Smith weather in March

Expect daytime maximum temperatures of 63°F in Fort Smith, Arkansas in March based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 4.1 inches of rainfall in the month.

  • 63°F maximum daytime temperature in March in Fort Smith63
    63°F max day temperature
  • 7 hours of sunshine per day
  • 10 days with some rainfall in March in Fort Smith10
    10 days with some rainfall
  • 39°F minimum night-time temperature in March in Fort Smith39
    39°F min night temperature
  • 12 hours of daylight per day in March in Fort Smith12
    12 hours of daylight per day
  • No heat & humidity in March in Fort Smith0
    No heat & humidity
  • 4.1 inches monthly rainfall in March in Fort Smith4.1
    4.1 inches of monthly rainfall
  • UV (maximum) index 6 (High) in March in Fort Smith6
    6 (High) UV index

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Fort Smith weather in April

Expect daytime maximum temperatures of 73°F in Fort Smith, Arkansas in April based on long-term weather averages. There are 8 hours of sunshine per day on average with 10 days with some rainfall and typically 4.4 inches of rainfall in the month.

  • 73°F maximum daytime temperature in April in Fort Smith73
    73°F max day temperature
  • 8 hours of sunshine per day
  • 10 days with some rainfall in April in Fort Smith10
    10 days with some rainfall
  • 48°F minimum night-time temperature in April in Fort Smith48
    48°F min night temperature
  • 13 hours of daylight per day in April in Fort Smith13
    13 hours of daylight per day
  • No heat & humidity in April in Fort Smith0
    No heat & humidity
  • 4.4 inches monthly rainfall in April in Fort Smith4.4
    4.4 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in April in Fort Smith8
    8 (Very High) UV index

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Fort Smith weather in May

Expect daytime maximum temperatures of 81°F in Fort Smith, Arkansas in May based on long-term weather averages. There are 9 hours of sunshine per day on average with 11 days with some rainfall and typically 5.8 inches of rainfall in the month.

  • 81°F maximum daytime temperature in May in Fort Smith81
    81°F max day temperature
  • 9 hours of sunshine per day
  • 11 days with some rainfall in May in Fort Smith11
    11 days with some rainfall
  • 57°F minimum night-time temperature in May in Fort Smith57
    57°F min night temperature
  • 14 hours of daylight per day in May in Fort Smith14
    14 hours of daylight per day
  • Low heat & humidity in May in Fort SmithL
    Low heat & humidity
  • 5.8 inches monthly rainfall in May in Fort Smith5.8
    5.8 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Fort Smith9
    9 (Very High) UV index

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Fort Smith weather in June

Expect daytime maximum temperatures of 88°F in Fort Smith, Arkansas in June and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 3.9 inches of rainfall in the month.

  • 88°F maximum daytime temperature in June in Fort Smith88
    88°F max day temperature
  • 10 hours of sunshine per day
  • 8 days with some rainfall in June in Fort Smith8
    8 days with some rainfall
  • 66°F minimum night-time temperature in June in Fort Smith66
    66°F min night temperature
  • 15 hours of daylight per day in June in Fort Smith15
    15 hours of daylight per day
  • High heat & humidity in June in Fort SmithH
    High heat & humidity
  • 3.9 inches monthly rainfall in June in Fort Smith3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in June in Fort Smith10
    10 (Very High) UV index

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Fort Smith weather in July

Expect daytime maximum temperatures of 93°F in Fort Smith, Arkansas in July and very high heat and humidity based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 3.5 inches of rainfall in the month.

  • 93°F maximum daytime temperature in July in Fort Smith93
    93°F max day temperature
  • 11 hours of sunshine per day
  • 7 days with some rainfall in July in Fort Smith7
    7 days with some rainfall
  • 70°F minimum night-time temperature in July in Fort Smith70
    70°F min night temperature
  • 14 hours of daylight per day in July in Fort Smith14
    14 hours of daylight per day
  • Very high heat & humidity in July in Fort SmithVH
    Very High heat & humidity
  • 3.5 inches monthly rainfall in July in Fort Smith3.5
    3.5 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Fort Smith10
    10 (Very High) UV index

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Fort Smith weather in August

Expect daytime maximum temperatures of 93°F in Fort Smith, Arkansas in August and very high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 3.1 inches of rainfall in the month.

  • 93°F maximum daytime temperature in August in Fort Smith93
    93°F max day temperature
  • 10 hours of sunshine per day
  • 7 days with some rainfall in August in Fort Smith7
    7 days with some rainfall
  • 68°F minimum night-time temperature in August in Fort Smith68
    68°F min night temperature
  • 13 hours of daylight per day in August in Fort Smith13
    13 hours of daylight per day
  • Very high heat & humidity in August in Fort SmithVH
    Very High heat & humidity
  • 3.1 inches monthly rainfall in August in Fort Smith3.1
    3.1 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Fort Smith9
    9 (Very High) UV index

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Fort Smith weather in September

Expect daytime maximum temperatures of 84°F in Fort Smith, Arkansas in September based on long-term weather averages. There are 8 hours of sunshine per day on average with typically 4.2 inches of rainfall in the month.

  • 84°F maximum daytime temperature in September in Fort Smith84
    84°F max day temperature
  • 8 hours of sunshine per day
  • 8 days with some rainfall in September in Fort Smith8
    8 days with some rainfall
  • 61°F minimum night-time temperature in September in Fort Smith61
    61°F min night temperature
  • 12 hours of daylight per day in September in Fort Smith12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Fort SmithM
    Moderate heat & humidity
  • 4.2 inches monthly rainfall in September in Fort Smith4.2
    4.2 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in September in Fort Smith8
    8 (Very High) UV index

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Fort Smith weather in October

Expect daytime maximum temperatures of 75°F in Fort Smith, Arkansas in October based on long-term weather averages. There are 7 hours of sunshine per day on average with typically 3.7 inches of rainfall in the month.

  • 75°F maximum daytime temperature in October in Fort Smith75
    75°F max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in October in Fort Smith7
    7 days with some rainfall
  • 48°F minimum night-time temperature in October in Fort Smith48
    48°F min night temperature
  • 11 hours of daylight per day in October in Fort Smith11
    11 hours of daylight per day
  • No heat & humidity in October in Fort Smith0
    No heat & humidity
  • 3.7 inches monthly rainfall in October in Fort Smith3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in October in Fort Smith5
    5 (Moderate) UV index

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Fort Smith weather in November

Expect daytime maximum temperatures of 63°F in Fort Smith, Arkansas in November based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 3.9 inches of rainfall in the month.

  • 63°F maximum daytime temperature in November in Fort Smith63
    63°F max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in November in Fort Smith7
    7 days with some rainfall
  • 37°F minimum night-time temperature in November in Fort Smith37
    37°F min night temperature
  • 10 hours of daylight per day in November in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in November in Fort Smith0
    No heat & humidity
  • 3.9 inches monthly rainfall in November in Fort Smith3.9
    3.9 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in November in Fort Smith3
    3 (Moderate) UV index

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Fort Smith weather in December

Expect daytime maximum temperatures of 52°F in Fort Smith, Arkansas in December based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 3.2 inches of rainfall in the month.

  • 52°F maximum daytime temperature in December in Fort Smith52
    52°F max day temperature
  • 5 hours of sunshine per day
  • 8 days with some rainfall in December in Fort Smith8
    8 days with some rainfall
  • 28°F minimum night-time temperature in December in Fort Smith28
    28°F min night temperature
  • 10 hours of daylight per day in December in Fort Smith10
    10 hours of daylight per day
  • No heat & humidity in December in Fort Smith0
    No heat & humidity
  • 3.2 inches monthly rainfall in December in Fort Smith3.2
    3.2 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Fort Smith2
    2 (Low) UV index

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More about Fort Smith

Fort Smith by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Arkansas

  • Save EXTRA 5% on airport transfers worldwide
  • Book private taxis & shuttle buses with discount code
  • Enter in coupon box on 'Reservations' page
Show discount codeShow discount code ******WEB

Expires at 23:59 on Thursday 31st Dec 2026

The climate guide for Arkansas (Fort Smith) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Tropical storm risk: Fort Smith, Arkansas hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
<1%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Compare Fort Smith weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Fort Smith, Arkansas, USA and the UK (London).

Maximum daytime temperature (°F)

Fort Smith, Arkansas, USA
UK (London)
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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