WEATHER IN Williston
Climate tables. Data for Williston.
Monthly temperature
| Month | Record low | Average low | Average | Average high | Record high |
| january | -41.1 (1912) | -17.2 | -11.3 | -5.5 | 14.4 (2012) |
| february | -45.6 (1936) | -14.7 | -8.8 | -2.9 | 18.9 (1992) |
| march | -37.2 (1897) | -8.1 | -1.8 | 4.5 | 28.9 (1910) |
| april | -26.1 (1975) | -1.6 | 5.8 | 13.1 | 33.3 (1980) |
| may | -12.2 (2005) | 4.6 | 12.1 | 19.7 | 41.1 (1980) |
| june | -3.3 (1998) | 10.1 | 17.5 | 24.8 | 42.2 (1931) |
| july | 1.1 (1967) | 13.5 | 21.3 | 29.2 | 43.3 (1936) |
| august | 0.0 (1911) | 12.2 | 20.6 | 28.8 | 42.2 (1949) |
| september | -10.6 (1907) | 6.4 | 14.4 | 22.6 | 40.0 (1983) |
| october | -22.8 (2002) | -0.9 | 6.2 | 13.3 | 33.9 (1897) |
| november | -32.8 (1996) | -8.3 | -2.3 | 3.6 | 24.4 (1999) |
| december | -45.6 (1983) | -14.4 | -8.8 | -3.3 | 17.2 (1939) |
| year | -45.6 (1936) | -1.8 | 5.3 | 12.3 | 43.3 (1936) |
Monthly precipitation
| Month | Average | Record low | Record high | Daily high |
| january | 14 | 0.3 (1898) | 51 (1896) | 16 (1991) |
| february | 12 | 0.0 (1934) | 45 (1998) | 18 (1878) |
| march | 16 | 0.3 (1966) | 57 (1975) | 35 (1983) |
| april | 27 | 0.0 (1931) | 84 (1967) | 56 (2006) |
| may | 53 | 2 (1958) | 188 (1965) | 44 (1959) |
| june | 67 | 11 (1961) | 225 (1901) | 78 (1973) |
| july | 63 | 0.5 (1894) | 168 (1997) | 125 (1963) |
| august | 40 | 0.8 (2001) | 129 (1947) | 64 (1955) |
| september | 35 | 0.3 (1899) | 95 (1959) | 41 (1998) |
| october | 24 | 0.0 (1944) | 90 (1971) | 46 (1891) |
| november | 17 | 0.0 (1928) | 84 (2000) | 50 (1969) |
| december | 16 | 0.0 (1913) | 64 (2008) | 23 (1935) |
| year | 365 | 156 (1934) | 560 (1896) | 125 (1963) |
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 |