Williamsburg, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 28° -28° (1974) 67° (1989) 1.07" 6.5"
February 15° 35° -31° (1996) 69° (2002) 1.03" 6.5"
March 26° 47° -25° (1962) 88° (1986) 2.12" 3.8"
April 37° 61° 5° (1982) 92° (1980) 3.5" 1.4"
May 49° 72° 23° (2005) 95° (2006) 4.71" 0"
June 59° 81° 37° (1993) 101° (1988) 4.72" 0"
July 62° 85° 45° (1972) 104° (1988) 4.24" 0"
August 60° 83° 40° (1986) 105° (1988) 4.76" 0"
September 50° 76° 27° (1953) 99° (1953) 3.74" 0"
October 39° 64° 10° (1952) 94° (1953) 2.63" 0.3"
November 27° 47° -8° (1977) 80° (1999) 2.6" 1.7"
December 15° 33° -27° (1985) 71° (1998) 1.47" 6.6"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 55° 80° 39° (1967) 99° (1953) 0.15" NA
Sep 2 55° 80° 41° (1955) 98° (1960) 0.15" NA
Sep 3 55° 79° 38° (1952) 98° (2000) 0.14" NA
Sep 4 54° 79° 37° (1974) 95° (1954) 0.14" NA
Sep 5 54° 79° 40° (1962) 95° (1960) 0.14" NA
Sep 6 54° 79° 39° (1962) 96° (1985) 0.14" NA
Sep 7 53° 78° 36° (1956) 95° (1960) 0.14" NA
Sep 8 53° 78° 36° (1986) 95° (1971) 0.14" NA
Sep 9 52° 78° 38° (1995) 98° (1955) 0.14" NA
Sep 10 52° 77° 36° (1976) 91° (1978) 0.13" NA
Sep 11 52° 77° 34° (1955) 91° (1953) 0.13" NA
Sep 12 51° 77° 31° (1955) 96° (2000) 0.13" NA
Sep 13 51° 77° 33° (1953) 92° (1998) 0.13" NA
Sep 14 51° 76° 34° (1996) 90° (1995) 0.13" NA
Sep 15 50° 76° 33° (2007) 93° (1955) 0.13" NA
Sep 16 50° 76° 32° (2007) 91° (1955) 0.12" NA
Sep 17 50° 75° 36° (1999) 91° (1955) 0.12" NA
Sep 18 49° 75° 37° (1956) 93° (1955) 0.12" NA
Sep 19 49° 75° 38° (1981) 94° (1948) 0.12" NA
Sep 20 48° 74° 31° (1956) 89° (1970) 0.12" NA
Sep 21 48° 74° 33° (2006) 86° (1959) 0.12" NA
Sep 22 48° 74° 27° (1953) 88° (2007) 0.11" NA
Sep 23 47° 73° 28° (1995) 82° (1984) 0.11" NA
Sep 24 47° 73° 30° (1995) 90° (1984) 0.11" NA
Sep 25 47° 73° 33° (1989) 88° (1986) 0.11" NA
Sep 26 46° 73° 30° (1984) 89° (1953) 0.11" NA
Sep 27 46° 72° 33° (1985) 89° (1954) 0.11" NA
Sep 28 46° 72° 27° (1951) 97° (1953) 0.1" NA
Sep 29 45° 71° 28° (1984) 93° (1953) 0.1" NA
Sep 30 45° 71° 30° (1984) 91° (1952) 0.1" NA
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