All-time weather records — Zionsville, IN

Record high
111.9°F
July 14, 1936
Record low
-51.0°F
September 15, 1917
Wettest day
7.92 in
June 28, 1957

Climate change signal in Zionsville

3%

of Zionsville's all-time daily heat records were set in the last decade (11 of 366 records since 2015).

1.4%

of all-time daily cold records were set in the last decade (5 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1900s
13
92
1910s
28
20
1920s
50
32
1930s
94
39
1940s
22
29
1950s
32
23
1960s
19
34
1970s
19
33
1980s
29
33
1990s
19
15
2000s
19
5
2010s
16
10
2020s
6
1

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1901, the latest in 2026. Period of observation: 1901-2026.

Records by month

Month Hottest day Coldest day Wettest day
January 70.0°F — Jan 25, 1950 -27.0°F — Jan 19, 1994 3.14 in — Jan 13, 2013
February 73.9°F — Feb 25, 2000 -22.0°F — Feb 13, 1905 3.12 in — Feb 11, 2009
March 84.0°F — Mar 21, 2012 -11.9°F — Mar 12, 1948 3.20 in — Mar 25, 1904
April 91.0°F — Apr 23, 1925 15.1°F — Apr 1, 1969 4.20 in — Apr 19, 2013
May 99.0°F — May 31, 1934 24.1°F — May 9, 1947 4.06 in — May 27, 1956
June 104.0°F — Jun 25, 1988 35.1°F — Jun 3, 1910 7.92 in — Jun 28, 1957
July 111.9°F — Jul 14, 1936 43.0°F — Jul 1, 1937 5.29 in — Jul 8, 1915
August 106.0°F — Aug 22, 1936 37.0°F — Aug 29, 1986 4.70 in — Aug 28, 1978
September 105.1°F — Sep 15, 1939 -51.0°F — Sep 15, 1917 5.46 in — Sep 1, 2003
October 90.0°F — Oct 1, 1971 12.9°F — Oct 31, 1908 3.60 in — Oct 26, 1920
November 80.1°F — Nov 1, 1933 -6.0°F — Nov 25, 1950 3.73 in — Nov 14, 1993
December 73.0°F — Dec 2, 1982 -23.1°F — Dec 28, 1924 2.45 in — Dec 11, 1985

Click a month to see every daily record for that month in Zionsville.