Waterloo October 31 Weather Records

Daily averages and all-time records for weather in Waterloo, Iowa for the date of October 31 (Halloween).
October 31 All-Time Records
1895–2024
Highest temperature 83 °F 1950
Lowest temperature 15 °F 1917
Lowest daily high 27 °F 1917
Highest daily low 54 °F 1950
Most precipitation 2.35 inches 1900
Most snow 0.5 inches 2019
October 31 Average Weather
1991–2020 1
Average high 53.8 °F
Average low 32.5 °F
Chance precipitation 26.6%
Chance snow 4.9%
Waterloo October 31 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 41 26 0.00 0.0
2022 67 33 0.00 0.0
2021 53 31 0.00 0.0
2020 67 36 0.00 0.0
2019 37 27 0.02 0.5
2018 58 34 0.00 0.0
2017 34 25 0.00 0.0
2016 64 41 0.00 0.0
2015 51 44 0.29 0.0
2014 42 18 0.00 0.0
2013 58 40 0.05 0.0
2012 51 24 0.00 0.0
2011 52 33 0.00 0.0
2010 52 28 0.00 0.0
2009 47 29 0.00 0.0
2008 72 36 0.00 0.0
2007 57 35 0.00 0.0
2006 40 20 0.00 0.0
2005 57 29 0.00 0.0
2004 54 38 0.00 0.0
2003 46 34 0.00 0.0
2002 38 25 0.00 0.0
2001 63 51 0.00 0.0
2000 73 44 0.00 0.0
1999 69 30 0.00 0.0
1998 53 42 0.00 0.0
1997 58 37 0.00 0.0
1996 33 23 0.00 0.0
1995 38 32 0.47 0.0
1994 54 28 0.00 0.0
1993 39 18 0.00 0.0
1992 48 41 0.23 0.0
1991 36 30 1.50 0.0
1990 74 39 0.00 0.0
1989 49 31 0.04 0.4
1988 65 30 0.00 0.0
1987 53 41 0.30 0.0
1986 63 41 0.32 0.0
1985 54 35 0.56 0.0
1984 60 28 1.10 0.0
1983 53 43 0.28 0.0
1982 61 44 0.15 0.0
1981 61 52 0.32 0.0
1980 61 25 0.00 0.0
1979 64 44 0.36 0.0
1978 58 32 0.00 0.0
1977 60 44 0.28 0.0
1976 50 26 0.00 0.0
1975 67 45 0.00 0.0
1974 66 52 0.66 0.0
1973 56 39 0.00 0.0
1972 45 43 0.64 0.0
1971 49 29 0.00 0.0
1970 41 34 0.00 0.0
1969 46 38 0.21 0.0
1968 80 39 0.00 0.0
1967 43 27 0.00 0.0
1966 53 33 0.00 0.0
1965 59 33 0.00 0.0
1964 68 43 0.00 0.0
1963 53 38 0.02 0.0
1962 47 27 0.00 0.0
1961 62 37 0.00 0.0
1960 45 39 1.28 0.0
1959 47 40 0.00 0.0
1958 66 25 0.00 0.0
1957 59 27 0.00 0.0
1956 56 47 0.00 0.0
1955 54 25 0.01 0.0
1954 41 20 0.00 0.0
1953 69 39 0.00 0.0
1952 71 36 0.00 0.0
1951 37 23 0.00 0.0
1950 83 54 0.00 0.0
1949 41 19 0.00 0.0
1948 72 38 0.00 0.0
1947 52 48 n/a 0.0
1946 60 32 0.00 0.0
1945 53 24 n/a 0.0
1944 74 49 n/a 0.0
1943 53 38 n/a 0.0
1942 54 30 0.36 0.0
1941 48 35 n/a 0.0
1940 63 46 n/a 0.0
1939 55 24 0.01 0.1
1938 68 45 n/a 0.0
1937 56 38 0.00 0.0
1936 60 44 n/a 0.0
1935 72 31 1.37 0.0
1934 50 32 0.00 0.0
1933 83 52 0.00 0.0
1932 43 29 0.00 0.0
1931 49 39 n/a 0.0
1930 34 19 0.00 0.0
1929 61 43 0.33 0.0
1928 44 37 n/a 0.0
1927 68 37 n/a 0.0
1926 48 31 0.00 0.0
1925 42 17 0.00 0.0
1924 75 43 n/a 0.0
1923 48 18 0.00 0.0
1922 63 52 0.28 0.0
1921 66 47 0.02 0.0
1920 59 43 0.60 0.0
1919 61 22 0.02 0.0
1918 41 33 0.00 0.0
1917 27 15 n/a n/a
1916 58 34 0.00 0.0
1915 72 38 0.00 0.0
1914 64 32 0.00 0.0
1913 40 19 0.00 0.0
1912 45 27 0.00 0.0
1911 46 27 n/a 0.0
1910 68 30 0.00 0.0
1909 74 49 n/a 0.0
1908 46 27 0.00 0.0
1907 51 45 n/a 0.0
1906 42 20 0.00 0.0
1905 47 23 0.00 0.0
1904 64 32 0.00 0.0
1903 65 45 n/a 0.0
1902 66 35 n/a 0.0
1901 65 39 n/a 0.0
1900 61 45 2.35 0.0
1899 71 31 n/a n/a
1898 52 21 0.00 0.0
1897 59 37 0.00 0.0
1896 48 31 0.04 n/a
1895 43 30 n/a n/a
What's the all-time high for Waterloo on 10/31?
For the date of Oct 31, the highest temperature ever reached in Waterloo history is 83 °F which has happened 2 times, most recently in 1950.
Highest Temperatures in Waterloo on October 31
Rank Temperature Year
1 83 °F 1950
1 83 °F 1933
3 80 °F 1968
4 75 °F 1924
5 74 °F 1909
5 74 °F 1944
5 74 °F 1990
8 73 °F 2000
9 72 °F 2008
9 72 °F 1935
9 72 °F 1915
9 72 °F 1948
What's the all-time low for Waterloo on 10/31?
For the date of Oct 31, the lowest temperature ever reached in Waterloo history is 15 °F which happened in 1917.
Lowest Temperatures in Waterloo on October 31
Rank Temperature Year
1 15 °F 1917
2 17 °F 1925
3 18 °F 1923
3 18 °F 1993
3 18 °F 2014
6 19 °F 1949
6 19 °F 1930
6 19 °F 1913
9 20 °F 2006
9 20 °F 1906
9 20 °F 1954
Lowest High Temperatures in Waterloo on October 31
Rank Temperature Year
1 27 °F 1917
2 33 °F 1996
3 34 °F 1930
3 34 °F 2017
5 36 °F 1991
6 37 °F 2019
6 37 °F 1951
8 38 °F 1995
8 38 °F 2002
10 39 °F 1993
What's the most it has ever rained in Waterloo on 10/31?
For the date of Oct 31, the most precipitation ever recorded in Waterloo history is 2.35 inches which happened in 1900.
All-Time Most Precipitation in Waterloo on October 31
Rank Precipitation Year
1 2.35 inches 1900
2 1.50 inches 1991
3 1.37 inches 1935
4 1.28 inches 1960
5 1.10 inches 1984
6 0.66 inches 1974
7 0.64 inches 1972
8 0.60 inches 1920
9 0.56 inches 1985
10 0.47 inches 1995
All-Time Most Snow in Waterloo on October 31
Rank Precipitation Year
1 0.5 inches 2019
2 0.4 inches 1989
3 0.1 inches 1939
Weather Station Details
Years Station Coordinates
1950–2024 Waterloo Municipal Airport location
1895–1950 Waterloo location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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