Helena, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 20° 38° -24° (1994) 75° (1943) 3.05" 4"
February 24° 43° -25° (1951) 78° (1972) 2.83" 3.3"
March 32° 54° -15° (1978) 89° (1910) 4.34" 1.1"
April 43° 66° 21° (1994) 91° (1930) 4.33" 0.1"
May 53° 75° 29° (1971) 98° (1911) 5.83" 0"
June 63° 84° 36° (1917) 106° (1954) 4.19" 0"
July 66° 87° 45° (1937) 112° (1936) 4.33" 0"
August 64° 87° 41° (1964) 109° (1943) 3.2" 0"
September 55° 80° 27° (1928) 106° (1953) 3.07" 0"
October 44° 68° 17° (1952) 97° (1953) 3.99" 0"
November 34° 55° -2° (1929) 89° (1923) 4.48" 0.3"
December 24° 41° -19° (1989) 74° (1982) 3.88" 2.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Jun 1 58° 80° 38° (1972) 98° (1934) 0.15" 0"
Jun 2 59° 80° 42° (1956) 96° (1913) 0.14" 0"
Jun 3 59° 81° 39° (1910) 95° (1942) 0.15" 0"
Jun 4 59° 81° 42° (1946) 97° (1911) 0.14" 0"
Jun 5 60° 82° 43° (1964) 99° (1911) 0.15" 0"
Jun 6 60° 82° 44° (1998) 98° (1911) 0.14" 0"
Jun 7 60° 82° 43° (1910) 97° (1933) 0.15" 0"
Jun 8 61° 82° 41° (1930) 96° (1958) 0.14" 0"
Jun 9 61° 83° 44° (1913) 97° (1963) 0.14" 0"
Jun 10 61° 83° 45° (1913) 98° (1914) 0.14" 0"
Jun 11 62° 83° 39° (1913) 102° (1914) 0.14" 0"
Jun 12 62° 84° 42° (1913) 99° (1914) 0.13" 0"
Jun 13 62° 84° 43° (1903) 99° (1954) 0.13" 0"
Jun 14 63° 84° 42° (1933) 96° (1954) 0.14" 0"
Jun 15 63° 85° 41° (1933) 101° (1952) 0.13" 0"
Jun 16 63° 85° 36° (1917) 98° (1952) 0.14" 0"
Jun 17 63° 85° 43° (1917) 101° (1913) 0.13" 0"
Jun 18 64° 85° 45° (1920) 102° (1913) 0.14" 0"
Jun 19 64° 86° 52° (1999) 103° (1913) 0.14" 0"
Jun 20 64° 86° 44° (1963) 103° (1913) 0.14" 0"
Jun 21 64° 86° 44° (1992) 101° (1913) 0.14" 0"
Jun 22 64° 86° 40° (1992) 101° (1913) 0.14" 0"
Jun 23 65° 86° 42° (1918) 104° (1930) 0.14" 0"
Jun 24 65° 87° 45° (1972) 99° (1914) 0.14" 0"
Jun 25 65° 87° 49° (1979) 103° (1988) 0.14" 0"
Jun 26 65° 87° 48° (1979) 106° (1954) 0.14" 0"
Jun 27 65° 87° 46° (1926) 104° (1931) 0.14" 0"
Jun 28 65° 87° 46° (1926) 106° (1944) 0.14" 0"
Jun 29 65° 87° 46° (1923) 106° (1931) 0.13" 0"
Jun 30 66° 87° 48° (1923) 103° (1931) 0.14" 0"
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