Helena, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 36° -24° (1994) 75° (1943) 2.84" NA
February 23° 42° -25° (1951) 78° (1972) 2.73" NA
March 32° 54° -15° (1978) 89° (1910) 4.35" NA
April 42° 65° 21° (1994) 91° (1930) 4.38" NA
May 52° 75° 29° (1971) 98° (1911) 4.76" NA
June 62° 84° 36° (1917) 106° (1954) 4.07" NA
July 66° 88° 45° (1937) 112° (1936) 4.13" NA
August 63° 86° 41° (1964) 109° (1943) 3.55" NA
September 55° 80° 27° (1928) 106° (1953) 3.09" NA
October 44° 69° 17° (1952) 97° (1953) 3.34" NA
November 34° 54° -2° (1929) 89° (1923) 4.39" NA
December 24° 41° -19° (1989) 74° (1982) 3.65" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 19° 38° -12° (2004) 69° (1911) 0.09" NA
Feb 2 20° 38° -25° (1951) 65° (1911) 0.09" NA
Feb 3 20° 39° -12° (1996) 67° (1927) 0.09" NA
Feb 4 20° 39° -12° (1912) 71° (1962) 0.09" NA
Feb 5 20° 39° -14° (1966) 72° (1927) 0.09" NA
Feb 6 20° 39° -9° (1977) 68° (1925) 0.09" NA
Feb 7 21° 40° -8° (1977) 69° (1925) 0.09" NA
Feb 8 21° 40° -8° (1977) 69° (1925) 0.09" NA
Feb 9 21° 40° -9° (1979) 71° (1938) 0.09" NA
Feb 10 21° 41° -21° (1982) 76° (1932) 0.09" NA
Feb 11 21° 41° -3° (1982) 69° (1932) 0.09" NA
Feb 12 22° 41° -23° (1929) 75° (1938) 0.09" NA
Feb 13 22° 42° -17° (1905) 75° (1962) 0.09" NA
Feb 14 22° 42° -9° (1905) 70° (1921) 0.09" NA
Feb 15 22° 42° -9° (1986) 74° (1945) 0.09" NA
Feb 16 23° 42° -4° (1958) 71° (1954) 0.1" NA
Feb 17 23° 43° -7° (1903) 74° (1911) 0.1" NA
Feb 18 23° 43° -13° (1910) 72° (1948) 0.1" NA
Feb 19 24° 44° -13° (1979) 72° (1930) 0.1" NA
Feb 20 24° 44° 0° (1936) 70° (1930) 0.1" NA
Feb 21 24° 44° 2° (1963) 72° (1930) 0.1" NA
Feb 22 24° 45° -5° (1963) 72° (1922) 0.11" NA
Feb 23 25° 45° 3° (1910) 70° (1982) 0.11" NA
Feb 24 25° 45° 2° (1914) 72° (1930) 0.11" NA
Feb 25 25° 46° -2° (1967) 74° (2000) 0.11" NA
Feb 26 26° 46° 2° (1974) 75° (2000) 0.11" NA
Feb 27 26° 47° -15° (1934) 74° (1996) 0.11" NA
Feb 28 26° 47° 0° (1993) 72° (1955) 0.12" NA
Feb 29 26° 47° 14° (1920) 78° (1972) 0.12" NA
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