Williston, North Dakota
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January -18° -6° -41.1° (1916) 12.8° (1944) 0.59" 10"
February -14° -2° -45.6° (1936) 18.9° (1992) 0.41" 5.7"
March -8° -37.2° (1897) 28.9° (1910) 0.71" 6.2"
April -1° 14° -26.1° (1975) 33.3° (1980) 1" 3.7"
May 20° -12.2° (2005) 41.1° (1980) 1.92" 1.3"
June 10° 25° -3.3° (1998) 42.2° (1931) 2.52" 0"
July 13° 29° 1.1° (1967) 43.3° (1936) 2.54" 0"
August 12° 29° 0° (1911) 42.2° (1949) 1.45" 0"
September 22° -10.6° (1907) 40° (1983) 1.06" 0.2"
October -1° 14° -22.8° (2002) 33.9° (1963) 0.92" 2.6"
November -9° -32.8° (1996) 24.4° (1999) 0.65" 6.1"
December -16° -4° -45.6° (1983) 17.2° (1939) 0.62" 9.5"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 17° -18° (1909) 32° (1901) 0.05" 0.1"
May 2 18° -18° (1911) 34° (1982) 0.05" 0.1"
May 3 18° -18° (2005) 32° (1982) 0.05" 0"
May 4 18° -18° (2002) 33° (1918) 0.05" 0.1"
May 5 18° -18° (1929) 32° (1934) 0.04" 0.1"
May 6 18° -18° (1907) 32° (1992) 0.05" 0"
May 7 18° -18° (1980) 33° (1992) 0.05" 0.1"
May 8 19° -18° (1945) 35° (1934) 0.06" 0"
May 9 19° -18° (1909) 32° (1977) 0.05" 0.1"
May 10 19° -18° (1927) 32° (1900) 0.06" 0.1"
May 11 19° -18° (1980) 36° (1900) 0.05" 0"
May 12 19° -18° (1980) 34° (1960) 0.06" 0.1"
May 13 19° -18° (1899) 35° (2001) 0.06" 0"
May 14 20° -18° (1907) 34° (1903) 0.06" 0.1"
May 15 20° -18° (1945) 36° (1936) 0.06" 0"
May 16 20° -18° (2009) 34° (1934) 0.06" 0.1"
May 17 20° -18° (2002) 37° (1901) 0.06" 0"
May 18 20° -18° (1993) 35° (1901) 0.07" 0.1"
May 19 20° -18° (1907) 34° (1992) 0.07" 0"
May 20 20° -18° (1997) 37° (1964) 0.07" 0"
May 21 21° -18° (2009) 39° (1980) 0.06" 0.1"
May 22 21° -18° (1963) 41° (1980) 0.07" 0"
May 23 21° -18° (2001) 35° (1980) 0.07" 0"
May 24 21° -18° (2002) 33° (1980) 0.07" 0.1"
May 25 21° -18° (1992) 34° (1931) 0.07" 0"
May 26 21° -18° (1907) 37° (1934) 0.07" 0"
May 27 22° -18° (1947) 38° (1900) 0.07" 0"
May 28 22° -18° (1947) 36° (1919) 0.08" 0"
May 29 22° -18° (1947) 37° (1988) 0.07" 0"
May 30 22° -18° (1907) 37° (1984) 0.08" 0"
May 31 22° -18° (1998) 34° (1986) 0.08" 0"
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