Earliest and Latest Days of 100° F in Port Arthur

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Port Arthur, Texas history. It is based on NOAA data from the years 1947–2024.

Also see:

Earliest 100 degree day in Port Arthur?

The earliest in the year that Port Arthur, Texas had a high temperature of at least 100 °F is June 2 which happened in 2011.

Latest 100 degree day in Port Arthur?

The latest in the year that Port Arthur, Texas had a high temperature of at least 100 °F is September 22 which happened in 2005.

Earliest Days ≥ 100 °F

Date	Year	Temperature
June 2	2011	102 °F
June 5	2011	104 °F
June 6	2011	100 °F
June 19	2022	100 °F
June 23	2022	100 °F
June 24	2009	102 °F
June 25	2009	100 °F
June 26	2022	101 °F
June 26	2012	100 °F
June 28	2009	100 °F
June 29	2013	101 °F
June 29	2009	100 °F
June 30	1954	100 °F
July 2	2011	100 °F
July 3	2011	100 °F
July 3	1969	100 °F
July 4	1970	103 °F
July 8	1969	100 °F
July 9	1969	100 °F
July 10	2023	100 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 22	2005	100 °F
September 21	2005	101 °F
September 10	1980	100 °F
September 8	2023	103 °F
September 7	2023	102 °F
September 6	2023	101 °F
September 5	2000	104 °F
September 4	2000	105 °F
September 3	2023	100 °F
September 3	2000	103 °F
September 2	2000	104 °F
September 1	2023	100 °F
September 1	2000	102 °F
August 31	2000	108 °F
August 31	1990	100 °F
August 30	2023	101 °F
August 30	2000	103 °F
August 30	1990	100 °F
August 29	2011	104 °F
August 28	2011	102 °F