Is this weather normal in Orange County?

California · county records since 1895, through September 2026.

11 of the last 12 months ran warmer than usual in Orange County. No county in California ran further above its usual September than Orange County (+1°).

This week

Usual for Oct 28 to Nov 3: highs near 76°, lows near 54°

That is the 1991 to 2020 average for these dates in Orange County. The Weather Service forecast fills in below.

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usual high for the datewarmercooler

The last 12 months

September 2026 ran +1° warmer than usual: the 12th warmest September of 132 on record.
Top-10 warm months this past year: December 2025 (2nd warmest), January 2026 (4th warmest), February 2026 (3rd warmest), March 2026 (warmest on record), April 2026 (8th warmest), July 2026 (8th warmest), August 2026 (warmest on record).
11 of the last 12 months were warmer than usual.

Each bar is a month's average temperature against the usual for that month (1991 to 2020). Ranks compare the same month in every year since 1895.

Every year since 1895

18952025

Warming about 0.5° per decade since 1970.
Warmest year: 2014 (67.0°). Coldest: 1916 (60.1°).
5 of the 10 warmest years came in the last 10.

Rain and drought

15.1 inches in the last 12 months, against a usual 13.0 (117%).
September brought 0.78 in (usual 0.12): the 11th wettest of 132.
Drought reading for September: a little dry (-2.0).

Rain and melted snow against the usual for each month. The drought reading is NOAA's Palmer index for the county.

Month by month in Orange County

Month	Usual high / low	Usual rain	Warmest	Coldest
January	68° / 47°	2.9 in	62.6° 2003	45.1° 1937
February	67° / 47°	3.3 in	64.8° 2016	48.9° 1939
March	69° / 49°	1.9 in	68.2° 2026	51.6° 1912
April	72° / 51°	0.8 in	65.1° 1992	52.5° 1967
May	74° / 55°	0.3 in	69.9° 1997	57.0° 1917
June	78° / 58°	0.1 in	73.1° 1981	62.5° 1965
July	83° / 63°	0.0 in	78.8° 2006	67.4° 1912
August	85° / 63°	0.0 in	78.5° 2026	66.6° 1900
September	84° / 62°	0.1 in	78.4° 2022	63.6° 1900
October	79° / 57°	0.5 in	73.5° 2015	59.1° 1916
November	73° / 51°	0.9 in	65.7° 2021	55.7° 1994
December	67° / 46°	2.2 in	62.0° 2017	50.0° 1916

Warmest and coldest are the month's whole-month average temperature, with the year it happened.

Towns in Orange County

Crime Radar: Riverside, Irvine, San Bernardino, Long Beach, Anaheim, Ontario, Rancho Cucamonga, Fontana