Earliest and Latest Days of 90° F in Mammoth Spring

This is a list of the earliest and latest days in the year with a high temperature of at least 90 °F in Mammoth Spring, Arkansas history. It is based on NOAA data from the years 1904–2024.

Also see:

Earliest 90 degree day in Mammoth Spring?

The earliest in the year that Mammoth Spring, Arkansas had a high temperature of at least 90 °F is March 9 which happened in 1911.

Latest 90 degree day in Mammoth Spring?

The latest in the year that Mammoth Spring, Arkansas had a high temperature of at least 90 °F is October 30 which happened in 1915.

Earliest Days ≥ 90 °F

Date	Year	Temperature
March 9	1911	94 °F
March 11	1967	90 °F
March 12	1967	92 °F
March 13	1967	90 °F
March 19	1907	93 °F
March 21	2017	92 °F
March 23	1910	91 °F
March 24	1929	97 °F
April 1	1946	90 °F
April 1	1940	93 °F
April 2	1918	92 °F
April 3	1918	91 °F
April 6	1960	90 °F
April 9	2020	90 °F
April 10	1930	92 °F
April 11	1965	90 °F
April 11	1930	93 °F
April 13	1972	92 °F
April 14	1936	91 °F
April 15	1936	94 °F

Latest Days ≥ 90 °F

Date	Year	Temperature
October 30	1915	90 °F
October 23	1939	92 °F
October 19	1963	90 °F
October 16	2015	90 °F
October 15	2017	90 °F
October 15	1963	92 °F
October 15	1938	90 °F
October 14	1963	93 °F
October 14	1938	90 °F
October 13	1989	95 °F
October 13	1928	90 °F
October 12	1989	90 °F
October 12	1975	90 °F
October 12	1947	90 °F
October 11	1975	91 °F
October 11	1963	96 °F
October 11	1938	91 °F
October 10	1980	90 °F
October 10	1963	94 °F
October 10	1938	90 °F
October 10	1928	90 °F