Fort Simpson weather by month

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

Temperature in Fort Simpson (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
-24°C maximum daytime temperature in January in Fort Simpson-24
-17°C maximum daytime temperature in February in Fort Simpson-17
-8°C maximum daytime temperature in March in Fort Simpson-8
3°C maximum daytime temperature in April in Fort Simpson3
14°C maximum daytime temperature in May in Fort Simpson14
21°C maximum daytime temperature in June in Fort Simpson21
23°C maximum daytime temperature in July in Fort Simpson23
21°C maximum daytime temperature in August in Fort Simpson21
13°C maximum daytime temperature in September in Fort Simpson13
2°C maximum daytime temperature in October in Fort Simpson2
-12°C maximum daytime temperature in November in Fort Simpson-12
-20°C maximum daytime temperature in December in Fort Simpson-20
Min temperature (night-time)
-33°C minimum night-time temperature in January in Fort Simpson-33
-28°C minimum night-time temperature in February in Fort Simpson-28
-22°C minimum night-time temperature in March in Fort Simpson-22
-9°C minimum night-time temperature in April in Fort Simpson-9
1°C minimum night-time temperature in May in Fort Simpson1
8°C minimum night-time temperature in June in Fort Simpson8
10°C minimum night-time temperature in July in Fort Simpson10
8°C minimum night-time temperature in August in Fort Simpson8
2°C minimum night-time temperature in September in Fort Simpson2
-5°C minimum night-time temperature in October in Fort Simpson-5
-20°C minimum night-time temperature in November in Fort Simpson-20
-28°C minimum night-time temperature in December in Fort Simpson-28
Heat & Humidity
No heat & humidity in January in Fort Simpson0
No heat & humidity in February in Fort Simpson0
No heat & humidity in March in Fort Simpson0
No heat & humidity in April in Fort Simpson0
No heat & humidity in May in Fort Simpson0
No heat & humidity in June in Fort Simpson0
No heat & humidity in July in Fort Simpson0
No heat & humidity in August in Fort Simpson0
No heat & humidity in September in Fort Simpson0
No heat & humidity in October in Fort Simpson0
No heat & humidity in November in Fort Simpson0
No heat & humidity in December in Fort Simpson0

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

Sunshine & UV index in Fort Simpson

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
6 hours of daylight per day in January in Fort Simpson6
9 hours of daylight per day in February in Fort Simpson9
12 hours of daylight per day in March in Fort Simpson12
15 hours of daylight per day in April in Fort Simpson15
18 hours of daylight per day in May in Fort Simpson18
19 hours of daylight per day in June in Fort Simpson19
19 hours of daylight per day in July in Fort Simpson19
16 hours of daylight per day in August in Fort Simpson16
13 hours of daylight per day in September in Fort Simpson13
10 hours of daylight per day in October in Fort Simpson10
7 hours of daylight per day in November in Fort Simpson7
5 hours of daylight per day in December in Fort Simpson5
UV Index (Maximum)
No UV (maximum) index in January in Fort Simpson0
No UV (maximum) index in February in Fort Simpson0
UV (maximum) index 1 (Low) in March in Fort Simpson1
UV (maximum) index 2 (Low) in April in Fort Simpson2
UV (maximum) index 4 (Moderate) in May in Fort Simpson4
UV (maximum) index 5 (Moderate) in June in Fort Simpson5
UV (maximum) index 5 (Moderate) in July in Fort Simpson5
UV (maximum) index 4 (Moderate) in August in Fort Simpson4
UV (maximum) index 2 (Low) in September in Fort Simpson2
UV (maximum) index 1 (Low) in October in Fort Simpson1
No UV (maximum) index in November in Fort Simpson0
No UV (maximum) index in December in Fort Simpson0

Rainfall in Fort Simpson

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
11 days with some rainfall in January in Fort Simpson11
10 days with some rainfall in February in Fort Simpson10
9 days with some rainfall in March in Fort Simpson9
6 days with some rainfall in April in Fort Simpson6
9 days with some rainfall in May in Fort Simpson9
11 days with some rainfall in June in Fort Simpson11
11 days with some rainfall in July in Fort Simpson11
11 days with some rainfall in August in Fort Simpson11
9 days with some rainfall in September in Fort Simpson9
11 days with some rainfall in October in Fort Simpson11
12 days with some rainfall in November in Fort Simpson12
11 days with some rainfall in December in Fort Simpson11
Average monthly rainfall (mm)
19 mm monthly rainfall in January in Fort Simpson19
18 mm monthly rainfall in February in Fort Simpson18
18 mm monthly rainfall in March in Fort Simpson18
16 mm monthly rainfall in April in Fort Simpson16
30 mm monthly rainfall in May in Fort Simpson30
44 mm monthly rainfall in June in Fort Simpson44
52 mm monthly rainfall in July in Fort Simpson52
49 mm monthly rainfall in August in Fort Simpson49
30 mm monthly rainfall in September in Fort Simpson30
36 mm monthly rainfall in October in Fort Simpson36
25 mm monthly rainfall in November in Fort Simpson25
19 mm monthly rainfall in December in Fort Simpson19

More about the Fort Simpson

Fort Simpson by month

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

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The climate guide for Northwest Territories (Fort Simpson) 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 Simpson?

Fort Simpson has a cold climate with cool summers and some rainfall in all months.

Fort Simpson weather in January

Expect daytime maximum temperatures of -24°C in Fort Simpson, Northwest Territories in January based on long-term weather averages. There are 2 hours of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

  • -24°C maximum daytime temperature in January in Fort Simpson-24
    -24°C max day temperature
  • 2 hours of sunshine per day
  • 11 days with some rainfall in January in Fort Simpson11
    11 days with some rainfall
  • -33°C minimum night-time temperature in January in Fort Simpson-33
    -33°C min night temperature
  • 6 hours of daylight per day in January in Fort Simpson6
    6 hours of daylight per day
  • No heat & humidity in January in Fort Simpson0
    No heat & humidity
  • 19 mm monthly rainfall in January in Fort Simpson19
    19 mm of monthly rainfall
  • No UV (maximum) index in January in Fort Simpson0
    No UV (Maximum) Index UV index

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Fort Simpson weather in February

Expect daytime maximum temperatures of -17°C in Fort Simpson, Northwest Territories in February based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall, which might fall as snow.

  • -17°C maximum daytime temperature in February in Fort Simpson-17
    -17°C max day temperature
  • 4 hours of sunshine per day
  • 10 days with some rainfall in February in Fort Simpson10
    10 days with some rainfall
  • -28°C minimum night-time temperature in February in Fort Simpson-28
    -28°C min night temperature
  • 9 hours of daylight per day in February in Fort Simpson9
    9 hours of daylight per day
  • No heat & humidity in February in Fort Simpson0
    No heat & humidity
  • 18 mm monthly rainfall in February in Fort Simpson18
    18 mm of monthly rainfall
  • No UV (maximum) index in February in Fort Simpson0
    No UV (Maximum) Index UV index

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Fort Simpson weather in March

Expect daytime maximum temperatures of -8°C in Fort Simpson, Northwest Territories in March based on long-term weather averages. There are 5 hours of sunshine per day on average, which might fall as snow.

  • -8°C maximum daytime temperature in March in Fort Simpson-8
    -8°C max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in March in Fort Simpson9
    9 days with some rainfall
  • -22°C minimum night-time temperature in March in Fort Simpson-22
    -22°C min night temperature
  • 12 hours of daylight per day in March in Fort Simpson12
    12 hours of daylight per day
  • No heat & humidity in March in Fort Simpson0
    No heat & humidity
  • 18 mm monthly rainfall in March in Fort Simpson18
    18 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in March in Fort Simpson1
    1 (Low) UV index

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Fort Simpson weather in April

Expect daytime maximum temperatures of 3°C in Fort Simpson, Northwest Territories in April based on long-term weather averages. There are 8 hours of sunshine per day on average, which might fall as snow.

  • 3°C maximum daytime temperature in April in Fort Simpson3
    3°C max day temperature
  • 8 hours of sunshine per day
  • 6 days with some rainfall in April in Fort Simpson6
    6 days with some rainfall
  • -9°C minimum night-time temperature in April in Fort Simpson-9
    -9°C min night temperature
  • 15 hours of daylight per day in April in Fort Simpson15
    15 hours of daylight per day
  • No heat & humidity in April in Fort Simpson0
    No heat & humidity
  • 16 mm monthly rainfall in April in Fort Simpson16
    16 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in April in Fort Simpson2
    2 (Low) UV index

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Fort Simpson weather in May

Expect daytime maximum temperatures of 14°C in Fort Simpson, Northwest Territories in May based on long-term weather averages. There are 9 hours of sunshine per day on average.

  • 14°C maximum daytime temperature in May in Fort Simpson14
    14°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in May in Fort Simpson9
    9 days with some rainfall
  • 1°C minimum night-time temperature in May in Fort Simpson1
    1°C min night temperature
  • 18 hours of daylight per day in May in Fort Simpson18
    18 hours of daylight per day
  • No heat & humidity in May in Fort Simpson0
    No heat & humidity
  • 30 mm monthly rainfall in May in Fort Simpson30
    30 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Fort Simpson4
    4 (Moderate) UV index

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Fort Simpson weather in June

Expect daytime maximum temperatures of 21°C in Fort Simpson, Northwest Territories in June based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 44 mm of rainfall in the month.

  • 21°C maximum daytime temperature in June in Fort Simpson21
    21°C max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in June in Fort Simpson11
    11 days with some rainfall
  • 8°C minimum night-time temperature in June in Fort Simpson8
    8°C min night temperature
  • 19 hours of daylight per day in June in Fort Simpson19
    19 hours of daylight per day
  • No heat & humidity in June in Fort Simpson0
    No heat & humidity
  • 44 mm monthly rainfall in June in Fort Simpson44
    44 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in June in Fort Simpson5
    5 (Moderate) UV index

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Fort Simpson weather in July

Expect daytime maximum temperatures of 23°C in Fort Simpson, Northwest Territories in July based on long-term weather averages. There are 10 hours of sunshine per day on average with 11 days with some rainfall and typically 52 mm of rainfall in the month.

  • 23°C maximum daytime temperature in July in Fort Simpson23
    23°C max day temperature
  • 10 hours of sunshine per day
  • 11 days with some rainfall in July in Fort Simpson11
    11 days with some rainfall
  • 10°C minimum night-time temperature in July in Fort Simpson10
    10°C min night temperature
  • 19 hours of daylight per day in July in Fort Simpson19
    19 hours of daylight per day
  • No heat & humidity in July in Fort Simpson0
    No heat & humidity
  • 52 mm monthly rainfall in July in Fort Simpson52
    52 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in July in Fort Simpson5
    5 (Moderate) UV index

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Fort Simpson weather in August

Expect daytime maximum temperatures of 21°C in Fort Simpson, Northwest Territories in August based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 49 mm of rainfall in the month.

  • 21°C maximum daytime temperature in August in Fort Simpson21
    21°C max day temperature
  • 8 hours of sunshine per day
  • 11 days with some rainfall in August in Fort Simpson11
    11 days with some rainfall
  • 8°C minimum night-time temperature in August in Fort Simpson8
    8°C min night temperature
  • 16 hours of daylight per day in August in Fort Simpson16
    16 hours of daylight per day
  • No heat & humidity in August in Fort Simpson0
    No heat & humidity
  • 49 mm monthly rainfall in August in Fort Simpson49
    49 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in August in Fort Simpson4
    4 (Moderate) UV index

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Fort Simpson weather in September

Expect daytime maximum temperatures of 13°C in Fort Simpson, Northwest Territories in September based on long-term weather averages. There are 5 hours of sunshine per day on average.

  • 13°C maximum daytime temperature in September in Fort Simpson13
    13°C max day temperature
  • 5 hours of sunshine per day
  • 9 days with some rainfall in September in Fort Simpson9
    9 days with some rainfall
  • 2°C minimum night-time temperature in September in Fort Simpson2
    2°C min night temperature
  • 13 hours of daylight per day in September in Fort Simpson13
    13 hours of daylight per day
  • No heat & humidity in September in Fort Simpson0
    No heat & humidity
  • 30 mm monthly rainfall in September in Fort Simpson30
    30 mm of monthly rainfall
  • UV (maximum) index 2 (Low) in September in Fort Simpson2
    2 (Low) UV index

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Fort Simpson weather in October

Expect daytime maximum temperatures of 2°C in Fort Simpson, Northwest Territories in October based on long-term weather averages. There are 3 hours of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

  • 2°C maximum daytime temperature in October in Fort Simpson2
    2°C max day temperature
  • 3 hours of sunshine per day
  • 11 days with some rainfall in October in Fort Simpson11
    11 days with some rainfall
  • -5°C minimum night-time temperature in October in Fort Simpson-5
    -5°C min night temperature
  • 10 hours of daylight per day in October in Fort Simpson10
    10 hours of daylight per day
  • No heat & humidity in October in Fort Simpson0
    No heat & humidity
  • 36 mm monthly rainfall in October in Fort Simpson36
    36 mm of monthly rainfall
  • UV (maximum) index 1 (Low) in October in Fort Simpson1
    1 (Low) UV index

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Fort Simpson weather in November

Expect daytime maximum temperatures of -12°C in Fort Simpson, Northwest Territories in November based on long-term weather averages. There is 1 hour of sunshine per day on average with 12 days with some rainfall, which might fall as snow.

  • -12°C maximum daytime temperature in November in Fort Simpson-12
    -12°C max day temperature
  • 1 hour of sunshine per day
  • 12 days with some rainfall in November in Fort Simpson12
    12 days with some rainfall
  • -20°C minimum night-time temperature in November in Fort Simpson-20
    -20°C min night temperature
  • 7 hours of daylight per day in November in Fort Simpson7
    7 hours of daylight per day
  • No heat & humidity in November in Fort Simpson0
    No heat & humidity
  • 25 mm monthly rainfall in November in Fort Simpson25
    25 mm of monthly rainfall
  • No UV (maximum) index in November in Fort Simpson0
    No UV (Maximum) Index UV index

Back to months

Fort Simpson weather in December

Expect daytime maximum temperatures of -20°C in Fort Simpson, Northwest Territories in December based on long-term weather averages. There is 1 hour of sunshine per day on average with 11 days with some rainfall, which might fall as snow.

  • -20°C maximum daytime temperature in December in Fort Simpson-20
    -20°C max day temperature
  • 1 hour of sunshine per day
  • 11 days with some rainfall in December in Fort Simpson11
    11 days with some rainfall
  • -28°C minimum night-time temperature in December in Fort Simpson-28
    -28°C min night temperature
  • 5 hours of daylight per day in December in Fort Simpson5
    5 hours of daylight per day
  • No heat & humidity in December in Fort Simpson0
    No heat & humidity
  • 19 mm monthly rainfall in December in Fort Simpson19
    19 mm of monthly rainfall
  • No UV (maximum) index in December in Fort Simpson0
    No UV (Maximum) Index UV index

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More about the Fort Simpson

Fort Simpson by month

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

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The climate guide for Northwest Territories (Fort Simpson) 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.

Compare Fort Simpson weather with the UK

The weather chart below compares the average monthly maximum daytime temperature for Fort Simpson, Northwest Territories, Canada and the UK (London).

Maximum daytime temperature (°C)

Fort Simpson, Northwest Territories, Canada
UK (London)
7
7
10
3
13
14
17
21
20
23
22
21
22
13
19
2
15
10
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
-24
-17
-8
-12
-20

Metric (°C / mm)  |  Imperial (°F / inches)

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