Earliest and Latest Days of 100° F in Fairfield

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Fairfield, Illinois history. It is based on NOAA data from the years 1895–2024.

Also see:

Earliest 100 degree day in Fairfield?

The earliest in the year that Fairfield, Illinois had a high temperature of at least 100 °F is June 4 which happened in 1911.

Latest 100 degree day in Fairfield?

The latest in the year that Fairfield, Illinois had a high temperature of at least 100 °F is September 21 which happened in 1940.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 4	1911	100 °F
June 9	1914	102 °F
June 10	1914	103 °F
June 11	1914	102 °F
June 16	1913	100 °F
June 17	1918	100 °F
June 17	1913	100 °F
June 18	1913	102 °F
June 19	1936	100 °F
June 19	1913	103 °F
June 20	1953	100 °F
June 20	1936	101 °F
June 20	1933	100 °F
June 20	1913	100 °F
June 21	1936	100 °F
June 21	1933	101 °F
June 21	1914	102 °F
June 21	1913	100 °F
June 22	1988	101 °F
June 22	1930	103 °F
June 22	1914	103 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 21	1940	100 °F
September 15	1939	105 °F
September 14	1939	104 °F
September 13	1939	103 °F
September 12	1939	101 °F
September 10	1938	101 °F
September 9	1939	103 °F
September 9	1925	101 °F
September 8	2002	102 °F
September 8	1939	104 °F
September 8	1938	100 °F
September 8	1933	101 °F
September 8	1925	102 °F
September 7	2002	100 °F
September 7	1990	100 °F
September 7	1939	103 °F
September 7	1933	100 °F
September 7	1925	100 °F
September 7	1899	101 °F
September 6	1925	104 °F
September 6	1899	101 °F