Earliest and Latest Days of 100° F in Cedar Rapids

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Cedar Rapids, Iowa history. It is based on NOAA data from the years 1892–2024.

Also see:

Earliest 100 degree day in Cedar Rapids?

The earliest in the year that Cedar Rapids, Iowa had a high temperature of at least 100 °F is May 6 which happened in 1896.

Latest 100 degree day in Cedar Rapids?

The latest in the year that Cedar Rapids, Iowa had a high temperature of at least 100 °F is September 9 which happened in 2013.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 6	1896	100 °F
May 22	1925	102 °F
May 31	1934	104 °F
June 2	1934	102 °F
June 10	1911	102 °F
June 20	1988	101 °F
June 21	1988	100 °F
June 22	1988	100 °F
June 23	1931	100 °F
June 23	1923	100 °F
June 23	1911	100 °F
June 24	1931	100 °F
June 25	1931	102 °F
June 26	1934	102 °F
June 26	1931	103 °F
June 27	2012	103 °F
June 27	1934	103 °F
June 27	1931	101 °F
June 28	2012	103 °F
June 28	1934	103 °F
June 28	1931	103 °F
June 28	1901	101 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 9	2013	100 °F
September 7	1922	100 °F
September 6	1922	101 °F
September 5	1899	102 °F
September 4	1925	105 °F
September 3	1913	101 °F
September 2	1925	103 °F
September 2	1913	102 °F
August 24	2023	101 °F
August 24	1947	100 °F
August 23	2023	103 °F
August 22	1936	100 °F
August 21	1916	100 °F
August 20	1947	100 °F
August 20	1916	100 °F
August 19	1914	100 °F
August 18	1936	108 °F
August 17	1988	102 °F
August 17	1913	100 °F
August 16	1988	101 °F
August 16	1937	100 °F
August 16	1913	101 °F