Fort Collins weather by month

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

Temperature in Fort Collins (°F)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
41°F maximum daytime temperature in January in Fort Collins41
45°F maximum daytime temperature in February in Fort Collins45
50°F maximum daytime temperature in March in Fort Collins50
61°F maximum daytime temperature in April in Fort Collins61
70°F maximum daytime temperature in May in Fort Collins70
79°F maximum daytime temperature in June in Fort Collins79
86°F maximum daytime temperature in July in Fort Collins86
82°F maximum daytime temperature in August in Fort Collins82
75°F maximum daytime temperature in September in Fort Collins75
64°F maximum daytime temperature in October in Fort Collins64
50°F maximum daytime temperature in November in Fort Collins50
43°F maximum daytime temperature in December in Fort Collins43
Min temperature (night-time)
14°F minimum night-time temperature in January in Fort Collins14
19°F minimum night-time temperature in February in Fort Collins19
25°F minimum night-time temperature in March in Fort Collins25
34°F minimum night-time temperature in April in Fort Collins34
43°F minimum night-time temperature in May in Fort Collins43
52°F minimum night-time temperature in June in Fort Collins52
57°F minimum night-time temperature in July in Fort Collins57
55°F minimum night-time temperature in August in Fort Collins55
46°F minimum night-time temperature in September in Fort Collins46
36°F minimum night-time temperature in October in Fort Collins36
25°F minimum night-time temperature in November in Fort Collins25
16°F minimum night-time temperature in December in Fort Collins16
Heat & Humidity
No heat & humidity in January in Fort Collins0
No heat & humidity in February in Fort Collins0
No heat & humidity in March in Fort Collins0
No heat & humidity in April in Fort Collins0
No heat & humidity in May in Fort Collins0
Low heat & humidity in June in Fort CollinsL
Moderate heat & humidity in July in Fort CollinsM
Low heat & humidity in August in Fort CollinsL
No heat & humidity in September in Fort Collins0
No heat & humidity in October in Fort Collins0
No heat & humidity in November in Fort Collins0
No heat & humidity in December in Fort Collins0

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

Sunshine & Daylight in Fort Collins

  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 Collins10
11 hours of daylight per day in February in Fort Collins11
12 hours of daylight per day in March in Fort Collins12
13 hours of daylight per day in April in Fort Collins13
14 hours of daylight per day in May in Fort Collins14
15 hours of daylight per day in June in Fort Collins15
15 hours of daylight per day in July in Fort Collins15
14 hours of daylight per day in August in Fort Collins14
12 hours of daylight per day in September in Fort Collins12
11 hours of daylight per day in October in Fort Collins11
10 hours of daylight per day in November in Fort Collins10
9 hours of daylight per day in December in Fort Collins9
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Fort Collins2
UV (maximum) index 3 (Moderate) in February in Fort Collins3
UV (maximum) index 5 (Moderate) in March in Fort Collins5
UV (maximum) index 7 (High) in April in Fort Collins7
UV (maximum) index 9 (Very High) in May in Fort Collins9
UV (maximum) index 10 (Very High) in June in Fort Collins10
UV (maximum) index 10 (Very High) in July in Fort Collins10
UV (maximum) index 9 (Very High) in August in Fort Collins9
UV (maximum) index 7 (High) in September in Fort Collins7
UV (maximum) index 4 (Moderate) in October in Fort Collins4
UV (maximum) index 2 (Low) in November in Fort Collins2
UV (maximum) index 2 (Low) in December in Fort Collins2

Rainfall in Fort Collins

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
5 days with some rainfall in January in Fort Collins5
6 days with some rainfall in February in Fort Collins6
9 days with some rainfall in March in Fort Collins9
9 days with some rainfall in April in Fort Collins9
11 days with some rainfall in May in Fort Collins11
9 days with some rainfall in June in Fort Collins9
9 days with some rainfall in July in Fort Collins9
9 days with some rainfall in August in Fort Collins9
7 days with some rainfall in September in Fort Collins7
5 days with some rainfall in October in Fort Collins5
6 days with some rainfall in November in Fort Collins6
6 days with some rainfall in December in Fort Collins6
Average monthly rainfall (inches)
0.4 inches monthly rainfall in January in Fort Collins0.4
0.4 inches monthly rainfall in February in Fort Collins0.4
1.3 inches monthly rainfall in March in Fort Collins1.3
1.8 inches monthly rainfall in April in Fort Collins1.8
2.8 inches monthly rainfall in May in Fort Collins2.8
1.9 inches monthly rainfall in June in Fort Collins1.9
1.8 inches monthly rainfall in July in Fort Collins1.8
1.3 inches monthly rainfall in August in Fort Collins1.3
1.3 inches monthly rainfall in September in Fort Collins1.3
1.0 inches monthly rainfall in October in Fort Collins1.0
0.7 inches monthly rainfall in November in Fort Collins0.7
0.5 inches monthly rainfall in December in Fort Collins0.5

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Fort Collins by month

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

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The climate guide for Colorado (Fort Collins) 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 Collins?

Fort Collins has a cold semi arid climate with hot summers.

Fort Collins weather in January

Expect daytime maximum temperatures of 41°F in Fort Collins, Colorado in January based on long-term weather averages. There are 7 hours of sunshine per day on average, which might fall as snow.

  • 41°F maximum daytime temperature in January in Fort Collins41
    41°F max day temperature
  • 7 hours of sunshine per day
  • 5 days with some rainfall in January in Fort Collins5
    5 days with some rainfall
  • 14°F minimum night-time temperature in January in Fort Collins14
    14°F min night temperature
  • 10 hours of daylight per day in January in Fort Collins10
    10 hours of daylight per day
  • No heat & humidity in January in Fort Collins0
    No heat & humidity
  • 0.4 inches monthly rainfall in January in Fort Collins0.4
    0.4 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in January in Fort Collins2
    2 (Low) UV index

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Fort Collins weather in February

Expect daytime maximum temperatures of 45°F in Fort Collins, Colorado in February based on long-term weather averages. There are 7 hours of sunshine per day on average, which might fall as snow.

  • 45°F maximum daytime temperature in February in Fort Collins45
    45°F max day temperature
  • 7 hours of sunshine per day
  • 6 days with some rainfall in February in Fort Collins6
    6 days with some rainfall
  • 19°F minimum night-time temperature in February in Fort Collins19
    19°F min night temperature
  • 11 hours of daylight per day in February in Fort Collins11
    11 hours of daylight per day
  • No heat & humidity in February in Fort Collins0
    No heat & humidity
  • 0.4 inches monthly rainfall in February in Fort Collins0.4
    0.4 inches of monthly rainfall
  • UV (maximum) index 3 (Moderate) in February in Fort Collins3
    3 (Moderate) UV index

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Fort Collins weather in March

Expect daytime maximum temperatures of 50°F in Fort Collins, Colorado in March based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 50°F maximum daytime temperature in March in Fort Collins50
    50°F max day temperature
  • 8 hours of sunshine per day
  • 9 days with some rainfall in March in Fort Collins9
    9 days with some rainfall
  • 25°F minimum night-time temperature in March in Fort Collins25
    25°F min night temperature
  • 12 hours of daylight per day in March in Fort Collins12
    12 hours of daylight per day
  • No heat & humidity in March in Fort Collins0
    No heat & humidity
  • 1.3 inches monthly rainfall in March in Fort Collins1.3
    1.3 inches of monthly rainfall
  • UV (maximum) index 5 (Moderate) in March in Fort Collins5
    5 (Moderate) UV index

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Fort Collins weather in April

Expect daytime maximum temperatures of 61°F in Fort Collins, Colorado in April based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 1.8 inches of rainfall in the month.

  • 61°F maximum daytime temperature in April in Fort Collins61
    61°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in April in Fort Collins9
    9 days with some rainfall
  • 34°F minimum night-time temperature in April in Fort Collins34
    34°F min night temperature
  • 13 hours of daylight per day in April in Fort Collins13
    13 hours of daylight per day
  • No heat & humidity in April in Fort Collins0
    No heat & humidity
  • 1.8 inches monthly rainfall in April in Fort Collins1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 7 (High) in April in Fort Collins7
    7 (High) UV index

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Fort Collins weather in May

Expect daytime maximum temperatures of 70°F in Fort Collins, Colorado in May based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 2.8 inches of rainfall in the month.

  • 70°F maximum daytime temperature in May in Fort Collins70
    70°F max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in May in Fort Collins11
    11 days with some rainfall
  • 43°F minimum night-time temperature in May in Fort Collins43
    43°F min night temperature
  • 14 hours of daylight per day in May in Fort Collins14
    14 hours of daylight per day
  • No heat & humidity in May in Fort Collins0
    No heat & humidity
  • 2.8 inches monthly rainfall in May in Fort Collins2.8
    2.8 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in May in Fort Collins9
    9 (Very High) UV index

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Fort Collins weather in June

Expect daytime maximum temperatures of 79°F in Fort Collins, Colorado in June based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 1.9 inches of rainfall in the month.

  • 79°F maximum daytime temperature in June in Fort Collins79
    79°F max day temperature
  • 11 hours of sunshine per day
  • 9 days with some rainfall in June in Fort Collins9
    9 days with some rainfall
  • 52°F minimum night-time temperature in June in Fort Collins52
    52°F min night temperature
  • 15 hours of daylight per day in June in Fort Collins15
    15 hours of daylight per day
  • Low heat & humidity in June in Fort CollinsL
    Low heat & humidity
  • 1.9 inches monthly rainfall in June in Fort Collins1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in June in Fort Collins10
    10 (Very High) UV index

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Fort Collins weather in July

Expect daytime maximum temperatures of 86°F in Fort Collins, Colorado in July based on long-term weather averages. There are 11 hours of sunshine per day on average with typically 1.8 inches of rainfall in the month.

  • 86°F maximum daytime temperature in July in Fort Collins86
    86°F max day temperature
  • 11 hours of sunshine per day
  • 9 days with some rainfall in July in Fort Collins9
    9 days with some rainfall
  • 57°F minimum night-time temperature in July in Fort Collins57
    57°F min night temperature
  • 15 hours of daylight per day in July in Fort Collins15
    15 hours of daylight per day
  • Moderate heat & humidity in July in Fort CollinsM
    Moderate heat & humidity
  • 1.8 inches monthly rainfall in July in Fort Collins1.8
    1.8 inches of monthly rainfall
  • UV (maximum) index 10 (Very High) in July in Fort Collins10
    10 (Very High) UV index

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Fort Collins weather in August

Expect daytime maximum temperatures of 82°F in Fort Collins, Colorado in August based on long-term weather averages. There are 10 hours of sunshine per day on average.

  • 82°F maximum daytime temperature in August in Fort Collins82
    82°F max day temperature
  • 10 hours of sunshine per day
  • 9 days with some rainfall in August in Fort Collins9
    9 days with some rainfall
  • 55°F minimum night-time temperature in August in Fort Collins55
    55°F min night temperature
  • 14 hours of daylight per day in August in Fort Collins14
    14 hours of daylight per day
  • Low heat & humidity in August in Fort CollinsL
    Low heat & humidity
  • 1.3 inches monthly rainfall in August in Fort Collins1.3
    1.3 inches of monthly rainfall
  • UV (maximum) index 9 (Very High) in August in Fort Collins9
    9 (Very High) UV index

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Fort Collins weather in September

Expect daytime maximum temperatures of 75°F in Fort Collins, Colorado in September based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 75°F maximum daytime temperature in September in Fort Collins75
    75°F max day temperature
  • 9 hours of sunshine per day
  • 7 days with some rainfall in September in Fort Collins7
    7 days with some rainfall
  • 46°F minimum night-time temperature in September in Fort Collins46
    46°F min night temperature
  • 12 hours of daylight per day in September in Fort Collins12
    12 hours of daylight per day
  • No heat & humidity in September in Fort Collins0
    No heat & humidity
  • 1.3 inches monthly rainfall in September in Fort Collins1.3
    1.3 inches of monthly rainfall
  • UV (maximum) index 7 (High) in September in Fort Collins7
    7 (High) UV index

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Fort Collins weather in October

Expect daytime maximum temperatures of 64°F in Fort Collins, Colorado in October based on long-term weather averages. There are 8 hours of sunshine per day on average.

  • 64°F maximum daytime temperature in October in Fort Collins64
    64°F max day temperature
  • 8 hours of sunshine per day
  • 5 days with some rainfall in October in Fort Collins5
    5 days with some rainfall
  • 36°F minimum night-time temperature in October in Fort Collins36
    36°F min night temperature
  • 11 hours of daylight per day in October in Fort Collins11
    11 hours of daylight per day
  • No heat & humidity in October in Fort Collins0
    No heat & humidity
  • 1.0 inches monthly rainfall in October in Fort Collins1.0
    1.0 inches of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in Fort Collins4
    4 (Moderate) UV index

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Fort Collins weather in November

Expect daytime maximum temperatures of 50°F in Fort Collins, Colorado in November based on long-term weather averages. There are 6 hours of sunshine per day on average.

  • 50°F maximum daytime temperature in November in Fort Collins50
    50°F max day temperature
  • 6 hours of sunshine per day
  • 6 days with some rainfall in November in Fort Collins6
    6 days with some rainfall
  • 25°F minimum night-time temperature in November in Fort Collins25
    25°F min night temperature
  • 10 hours of daylight per day in November in Fort Collins10
    10 hours of daylight per day
  • No heat & humidity in November in Fort Collins0
    No heat & humidity
  • 0.7 inches monthly rainfall in November in Fort Collins0.7
    0.7 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in November in Fort Collins2
    2 (Low) UV index

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Fort Collins weather in December

Expect daytime maximum temperatures of 43°F in Fort Collins, Colorado in December based on long-term weather averages. There are 6 hours of sunshine per day on average, which might fall as snow.

  • 43°F maximum daytime temperature in December in Fort Collins43
    43°F max day temperature
  • 6 hours of sunshine per day
  • 6 days with some rainfall in December in Fort Collins6
    6 days with some rainfall
  • 16°F minimum night-time temperature in December in Fort Collins16
    16°F min night temperature
  • 9 hours of daylight per day in December in Fort Collins9
    9 hours of daylight per day
  • No heat & humidity in December in Fort Collins0
    No heat & humidity
  • 0.5 inches monthly rainfall in December in Fort Collins0.5
    0.5 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in December in Fort Collins2
    2 (Low) UV index

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Fort Collins by month

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The climate guide for Colorado (Fort Collins) 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.

Metric (°C)  |  Imperial (°F)

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Compare Fort Collins with the UK

Below the Fort Collins chart shows average maximum daytime temperature for Fort Collins, Colorado, USA and the UK (London).

Maximum daytime temperature (°F)

Fort Collins, Colorado, USA
UK (London)
41
45
45
45
50
50
61
55
70
63
79
68
86
72
82
72
75
66
64
59
50
50
43
46
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C)  |  Imperial (°F)

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