Earliest and Latest Days of 100° F in Peoria

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Peoria, Illinois history. It is based on NOAA data from the years 1905–2024.

Also see:

Earliest 100 degree day in Peoria?

The earliest in the year that Peoria, Illinois had a high temperature of at least 100 °F is May 31 which happened in 1934.

Latest 100 degree day in Peoria?

The latest in the year that Peoria, Illinois had a high temperature of at least 100 °F is September 15 which happened in 1939.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 31	1934	104 °F
June 1	1934	105 °F
June 2	1934	100 °F
June 3	1934	100 °F
June 9	1911	100 °F
June 10	1911	100 °F
June 16	1918	100 °F
June 19	1971	100 °F
June 19	1953	100 °F
June 20	1934	100 °F
June 25	1988	105 °F
June 25	1931	100 °F
June 26	1934	102 °F
June 26	1933	101 °F
June 26	1931	100 °F
June 27	1934	104 °F
June 27	1931	101 °F
June 28	2012	100 °F
June 28	1934	104 °F
June 28	1931	101 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 15	1939	100 °F
September 14	1939	102 °F
September 9	1933	100 °F
September 8	1922	100 °F
September 7	1939	101 °F
September 6	1922	100 °F
September 2	1913	100 °F
September 1	2011	100 °F
September 1	1953	100 °F
September 1	1913	101 °F
August 24	1936	102 °F
August 23	1947	101 °F
August 22	1947	100 °F
August 22	1936	102 °F
August 20	1983	102 °F
August 19	1983	100 °F
August 18	1988	101 °F
August 18	1983	101 °F
August 18	1936	106 °F
August 17	1988	103 °F
August 17	1983	101 °F