Heron, Montana
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 32° -39° (1927) 61° (1913) 4.27" 28.7"
February 23° 37° -32° (1936) 59° (1995) 3.38" 16.6"
March 27° 46° -22° (1955) 73° (1915) 2.68" 7.7"
April 32° 57° -10° (1936) 88° (1977) 2.22" 1.3"
May 38° 66° 19° (1954) 96° (1936) 2.81" 0.2"
June 44° 73° 25° (1951) 99° (1924) 2.62" 0"
July 47° 81° 29° (1924) 105° (1939) 1.46" 0"
August 46° 80° 21° (1969) 106° (1961) 1.35" 0"
September 40° 70° 9° (1926) 97° (1944) 1.72" 0"
October 33° 55° 4° (1935) 87° (1943) 2.24" 0.4"
November 28° 39° -16° (1955) 69° (1923) 4.55" 9"
December 21° 32° -35° (1968) 66° (1912) 4.46" 22.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 36° 63° 19° (1921) 82° (1935) 0.06" NA
Oct 2 35° 62° 22° (1925) 83° (1943) 0.05" NA
Oct 3 35° 62° 20° (1925) 83° (1943) 0.05" NA
Oct 4 35° 61° 22° (1925) 87° (1943) 0.05" NA
Oct 5 35° 61° 19° (1925) 77° (1932) 0.05" NA
Oct 6 34° 60° 16° (1974) 82° (1920) 0.05" NA
Oct 7 34° 60° 19° (1974) 82° (1943) 0.06" NA
Oct 8 34° 59° 17° (1985) 80° (1943) 0.06" NA
Oct 9 34° 59° 16° (1985) 83° (1934) 0.06" NA
Oct 10 34° 58° 17° (1919) 87° (1934) 0.06" NA
Oct 11 33° 58° 17° (1924) 85° (1934) 0.06" NA
Oct 12 33° 57° 19° (1946) 75° (1944) 0.06" NA
Oct 13 33° 57° 19° (1930) 75° (1929) 0.06" NA
Oct 14 33° 56° 18° (1925) 74° (1929) 0.06" NA
Oct 15 33° 56° 13° (1925) 78° (1929) 0.06" NA
Oct 16 32° 55° 14° (1946) 75° (1916) 0.07" NA
Oct 17 32° 55° 15° (1948) 72° (1944) 0.07" NA
Oct 18 32° 54° 12° (1946) 72° (1936) 0.07" NA
Oct 19 32° 54° 19° (1948) 76° (1927) 0.07" NA
Oct 20 32° 53° 16° (1925) 75° (1927) 0.08" NA
Oct 21 32° 53° 14° (1984) 74° (1927) 0.08" NA
Oct 22 31° 52° 18° (1918) 68° (1913) 0.08" NA
Oct 23 31° 52° 18° (1916) 72° (1944) 0.08" NA
Oct 24 31° 51° 10° (1919) 71° (1920) 0.09" NA
Oct 25 31° 50° 15° (1919) 70° (1944) 0.09" NA
Oct 26 31° 50° 14° (2002) 71° (1937) 0.09" NA
Oct 27 31° 49° 15° (2002) 69° (1915) 0.1" NA
Oct 28 31° 49° 11° (1971) 66° (1944) 0.1" NA
Oct 29 31° 48° 10° (1971) 68° (1915) 0.1" NA
Oct 30 30° 47° 8° (2002) 64° (1944) 0.11" NA
Oct 31 30° 47° 4° (1935) 60° (1921) 0.11" NA
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