San Jose, California, United States climate

Average temperatures, precipitation and all-time records for San Jose, California, United States, with every day graded against ~45 years of local climate history (1981–2026). Its warmest month is August, averaging a high of 87°F, and its coldest is December, with an average low of 39°F.

San Jose, officially the City of San José, is the most populous city in the San Francisco Bay Area and Northern California, and the 13th-most populous in the United States, with an estimated 989,814 residents as of 2025. via Wikipedia

How today compares

Latest recorded day: 2026-07-21. Each reading placed on San Jose, California, United States's own ±7-day seasonal distribution.

High 96°F High · 88th pct

Low 67°F Near Record · 99th pct

Feels-like 100°F Above Normal · 71st pct

Humidity 13.6 g/m³ Very High · 99th pct

Wind 8 mph Near Record · 1st pct

Precip 0.00 in Dry

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San Jose average temperatures by month

Typical daily high and low, and average precipitation, for each month in San Jose, California, United States, based on 1981–2026 records. The wettest month is February (0.20 in on an average day).

Month	Avg high	Avg low	Avg precip
January	57°F	40°F	0.10 in
February	59°F	41°F	0.20 in
March	62°F	43°F	0.10 in
April	66°F	44°F	0.00 in
May	72°F	47°F	0.00 in
June	81°F	51°F	0.00 in
July	87°F	54°F	0.00 in
August	87°F	54°F	0.00 in
September	84°F	54°F	0.00 in
October	78°F	50°F	0.00 in
November	65°F	44°F	0.10 in
December	57°F	39°F	0.10 in

Jan 32°–65°

Feb 34°–67°

Mar 37°–71°

Apr 38°–77°

May 43°–84°

Jun 47°–94°

Jul 50°–98°

Aug 50°–98°

Sep 49°–97°

Oct 45°–90°

Nov 38°–75°

Dec 32°–64°

Each bar spans the 10th-percentile daily low to the 90th-percentile daily high (the range most days fall within), coloured cold → hot on a shared -10°F to 115°F scale, so the whole year's rhythm reads at a glance.

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Record extremes

Hottest day on record: 115°F on 2022-09-06
Coldest day on record: 20°F on 1990-12-22

All San Jose weather records →

Percentiles compare each day to San Jose, California, United States's own history, so grades are relative to this location: a “Near Record” day here isn't the same temperature as elsewhere. How the grades work →