Heron, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 22° 33° -39° (1927) 61° (1913) 4.25" 24.5"
February 23° 38° -32° (1936) 59° (1995) 3.01" 11.9"
March 27° 47° -22° (1955) 73° (1915) 2.94" 8.6"
April 32° 57° -10° (1936) 88° (1977) 2.36" 1.3"
May 38° 66° 19° (1954) 96° (1936) 2.83" 0.1"
June 45° 73° 25° (1951) 99° (1924) 2.82" 0"
July 47° 81° 29° (1924) 105° (1939) 1.38" 0"
August 46° 81° 21° (1969) 106° (1961) 1.07" 0"
September 40° 70° 9° (1926) 97° (1944) 1.73" 0"
October 33° 55° 4° (1935) 87° (1943) 2.69" 0.3"
November 29° 40° -16° (1955) 69° (1923) 4.61" 8.5"
December 22° 32° -35° (1968) 66° (1912) 4.15" 24.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Apr 1 30° 53° -1° (1936) 70° (1990) 0.09" 0.1"
Apr 2 31° 53° -10° (1936) 77° (1992) 0.08" 0.1"
Apr 3 31° 53° -1° (1936) 73° (1944) 0.09" 0.1"
Apr 4 31° 54° 3° (1936) 68° (1925) 0.08" 0.1"
Apr 5 31° 54° 7° (1936) 70° (1952) 0.09" 0"
Apr 6 31° 54° 17° (1956) 73° (1977) 0.08" 0.1"
Apr 7 31° 55° 16° (1973) 77° (1977) 0.08" 0.1"
Apr 8 31° 55° 17° (1973) 78° (1925) 0.08" 0"
Apr 9 31° 55° 19° (1924) 79° (1925) 0.08" 0.1"
Apr 10 31° 56° 20° (1935) 79° (1925) 0.08" 0.1"
Apr 11 31° 56° 19° (1999) 75° (1926) 0.08" 0"
Apr 12 32° 56° 20° (1975) 79° (1934) 0.08" 0.1"
Apr 13 32° 57° 19° (1983) 77° (1988) 0.08" 0"
Apr 14 32° 57° 18° (1999) 80° (1988) 0.08" 0.1"
Apr 15 32° 57° 18° (1924) 81° (1926) 0.08" 0"
Apr 16 32° 58° 21° (1924) 80° (1923) 0.08" 0"
Apr 17 32° 58° 19° (1977) 81° (1936) 0.08" 0.1"
Apr 18 32° 58° 18° (1941) 82° (1962) 0.08" 0"
Apr 19 32° 59° 14° (1966) 78° (1915) 0.07" 0"
Apr 20 32° 59° 10° (1927) 83° (1934) 0.08" 0.1"
Apr 21 33° 59° 20° (1951) 83° (1934) 0.08" 0"
Apr 22 33° 60° 20° (1951) 83° (1934) 0.08" 0"
Apr 23 33° 60° 20° (1967) 85° (1977) 0.07" 0"
Apr 24 33° 60° 20° (1926) 87° (1977) 0.08" 0"
Apr 25 33° 61° 3° (1924) 88° (1977) 0.07" 0"
Apr 26 33° 61° 19° (1924) 81° (1927) 0.08" 0.1"
Apr 27 34° 61° 21° (1925) 85° (1987) 0.07" 0"
Apr 28 34° 61° 20° (1925) 87° (1939) 0.07" 0"
Apr 29 34° 62° 21° (1973) 88° (1926) 0.07" 0"
Apr 30 34° 62° 20° (1972) 81° (1941) 0.07" 0"
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