Bethalto, Illinois
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 19° 36° -16° (1982) 72° (1950) 1.99" 5.1"
February 24° 42° -15° (1996) 76° (2000) 2.3" 4.4"
March 34° 52° -1° (1960) 85° (1986) 3.47" 3.4"
April 45° 64° 20° (1982) 92° (1952) 4.16" 0.4"
May 55° 75° 32° (1966) 98° (1953) 4.24" 0"
June 64° 84° 44° (1998) 107° (1952) 3.22" 0"
July 69° 88° 50° (1972) 111° (1954) 3.49" 0"
August 66° 86° 46° (1986) 106° (1953) 3.17" 0"
September 58° 79° 37° (1974) 103° (1954) 3.14" 0"
October 46° 68° 25° (1981) 97° (2006) 2.7" 0"
November 35° 53° 4° (1964) 84° (1950) 3.75" 0.6"
December 25° 41° -16° (1989) 73° (1984) 2.91" 1.9"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 28° 47° 3° (1960) 81° (1972) 0.1" NA
Mar 2 29° 47° 6° (1980) 74° (1976) 0.1" NA
Mar 3 29° 47° 9° (1980) 77° (1976) 0.1" NA
Mar 4 29° 48° 4° (1978) 79° (1974) 0.1" NA
Mar 5 30° 48° -1° (1960) 81° (1956) 0.1" NA
Mar 6 30° 49° 4° (1960) 82° (1956) 0.1" NA
Mar 7 31° 49° 14° (1996) 78° (1987) 0.1" NA
Mar 8 31° 49° 4° (1996) 80° (1974) 0.1" NA
Mar 9 31° 50° 3° (1996) 79° (1974) 0.1" NA
Mar 10 32° 50° 13° (1969) 82° (1955) 0.11" NA
Mar 11 32° 51° 7° (1979) 79° (1990) 0.11" NA
Mar 12 32° 51° 9° (1998) 81° (1972) 0.11" NA
Mar 13 33° 51° 9° (1998) 80° (1990) 0.11" NA
Mar 14 33° 52° 11° (1993) 78° (1953) 0.11" NA
Mar 15 33° 52° 11° (1993) 77° (1971) 0.11" NA
Mar 16 34° 52° 19° (1997) 76° (1995) 0.11" NA
Mar 17 34° 53° 21° (1970) 77° (1995) 0.11" NA
Mar 18 34° 53° 16° (1965) 77° (1989) 0.11" NA
Mar 19 35° 54° 11° (1965) 74° (1995) 0.11" NA
Mar 20 35° 54° 13° (1965) 72° (1953) 0.12" NA
Mar 21 35° 54° 16° (1951) 80° (1966) 0.12" NA
Mar 22 36° 55° 18° (2002) 82° (1997) 0.12" NA
Mar 23 36° 55° 18° (2002) 73° (1963) 0.12" NA
Mar 24 37° 56° 2° (1974) 81° (1967) 0.12" NA
Mar 25 37° 56° 8° (1974) 82° (2007) 0.12" NA
Mar 26 37° 56° 4° (1955) 83° (1991) 0.12" NA
Mar 27 38° 57° 17° (1955) 83° (1991) 0.12" NA
Mar 28 38° 57° 25° (1955) 80° (2007) 0.12" NA
Mar 29 38° 58° 22° (1964) 85° (1963) 0.13" NA
Mar 30 39° 58° 20° (1964) 84° (1986) 0.13" NA
Mar 31 39° 58° 23° (1969) 85° (1986) 0.13" NA
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