WEATHER IN Fort Simpson
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Climate tables. Data for Fort Simpson.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -54.4 (1936) | -28.0 | -23.7 | -19.4 | 13.2 (1985) |
| february | -56.2 (1947) | -24.9 | -19.6 | -14.4 | 15.6 (1938) |
| march | -46.7 (1929) | -19.7 | -13.2 | -6.7 | 17.2 (2019) |
| april | -39.4 (1954) | -6.8 | -0.7 | 5.5 | 25.5 (1977) |
| may | -22.8 (1899) | 2.6 | 9.2 | 15.8 | 32.8 (1995) |
| june | -3.9 (1920) | 9.0 | 15.5 | 21.9 | 35.0 (1955) |
| july | -1.1 (1967) | 11.2 | 17.4 | 23.6 | 36.6 (1994) |
| august | -6.1 (1922) | 8.9 | 15.0 | 21.0 | 35.4 (1984) |
| september | -20.6 (1983) | 2.7 | 8.3 | 13.9 | 30.9 (2017) |
| october | -27.8 (1935) | -5.4 | -1.7 | 2.0 | 30.6 (1923) |
| november | -46.1 (1941) | -18.5 | -14.7 | -10.8 | 13.3 (1949) |
| december | -53.3 (1933) | -25.9 | -21.8 | -17.6 | 14.5 (1999) |
| year | () | () |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 17.1 | 0.6 (1979) | 73.6 (1929) | 23.4 (1961) |
| february | 13.8 | 0.8 (1940) | 64.3 (1930) | 18.5 (1916) |
| march | 13.3 | 0.2 (2019) | 51.6 (1979) | 20.3 (1932) |
| april | 14.1 | 0.0 (1965) | 104.7 (1905) | 38.4 (1981) |
| may | 28.3 | 0.8 (1963) | 99.3 (1977) | 40.6 (1911) |
| june | 53.1 | 0.0 (1916) | 174.4 (1988) | 85.8 (1988) |
| july | 56.6 | 2.9 (1901) | 143.2 (1932) | 86.4 (1935) |
| august | 56.9 | 0.5 (1957) | 119.0 (2001) | 59.2 (1937) |
| september | 30.1 | 0.0 (1925) | 131.3 (1905) | 34.0 (2009) |
| october | 29.7 | 1.3 (1906) | 149.1 (1981) | 45.9 (1981) |
| november | 18.8 | 3.0 (1928) | 69.2 (1933) | 27.0 (1981) |
| december | 17.5 | 0.0 (1927) | 71.9 (1935) | 30.5 (1895) |
| year | () | () | () |
Number of days with solid, liquid, and mixed precipitation
| Type of precipitation | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Wind speed, m/s
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different wind directions, %
| direction | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Air humidity, %
| jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
Snow cover
| Month | jul | aug | sep | oct | nov | dec | jan | feb | mar | apr | may | jun | Year |
| number of days | |||||||||||||
| height (sm) | |||||||||||||
| max height (sm) |
Cloudy, score
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| total | |||||||||||||
| low |
Number of clear, cloudy and cloudy days
| month | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
| Total cloud | |||||||||||||
| Low cloud | |||||||||||||
Number of days with different phenomena
| phenomenon | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |
The frequency of different types of clouds, %
| type of clouds | jan | feb | mar | apr | may | jun | jul | aug | sep | oct | nov | dec | Year |


