Stockton, CA Climate & Monthly Averages
The climate of Stockton
Located in California, United States, Stockton experiences a Mediterranean climate with hot, dry summers and mild, wetter winters. Afternoon temperatures peak near 96°F (36°C) in July and dip to about 56°F (13°C) in December, with around 21.1 inches (536 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 96°F (36°C)
- Coldest month: December - highs near 56°F (13°C)
- Record high: 119°F (48°C) · Record low: 28°F (-2°C) (2015–2024)
- Wettest month: December (10 rainy days) · Sunniest: July (13.9 h sun/day)
- Climate type: Mediterranean - hot, dry summers and mild, wetter winters
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 96°F (36°C) and overnight lows stay near 63°F (17°C). The coolest month is December, with typical highs of 56°F (13°C) and lows around 41°F (5°C). Based on 2015–2024 weather data, temperatures have reached as high as 119°F (48°C) and dropped as low as 28°F (-2°C).
Rain, sun and snow
December is usually the wettest month. It brings about 4.5 inches (113 mm) of rain over 10 days, while July is the driest. July brings the most sunshine, averaging 13.9 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 57° | 41° | 10 | 4.3 in | 6.4 h/day | 84% |
| February | 61° | 42° | 7 | 3.0 in | 8.8 h/day | 73% |
| March | 65° | 45° | 10 | 3.5 in | 9.5 h/day | 71% |
| April | 73° | 50° | 4 | 1.4 in | 11.3 h/day | 61% |
| May | 81° | 54° | 3 | 0.7 in | 13.1 h/day | 53% |
| June | 91° | 60° | 0 | 0.1 in | 13.7 h/day | 46% |
| July | 96° | 63° | 0 | 0.0 in | 13.9 h/day | 45% |
| August | 95° | 63° | 0 | 0.0 in | 13.0 h/day | 48% |
| September | 90° | 61° | 1 | 0.3 in | 11.7 h/day | 50% |
| October | 80° | 54° | 2 | 1.2 in | 10.1 h/day | 54% |
| November | 64° | 45° | 6 | 2.1 in | 8.1 h/day | 71% |
| December | 56° | 41° | 10 | 4.5 in | 6.3 h/day | 82% |
Stockton month by month
Stockton weather in January
January brings highs around 57°F (14°C), lows near 41°F (5°C), about 10 wet days.
Stockton weather in February
February brings highs around 61°F (16°C), lows near 42°F (6°C), about 7 wet days.
Stockton weather in March
March brings highs around 65°F (18°C), lows near 45°F (7°C), about 10 wet days.
Stockton weather in April
April brings highs around 73°F (23°C), lows near 50°F (10°C), about 4 wet days.
Stockton weather in May
May brings highs around 81°F (27°C), lows near 54°F (12°C), about 3 wet days.
Stockton weather in June
June brings highs around 91°F (33°C), lows near 60°F (16°C), about 0 wet days.
Stockton weather in July
July brings highs around 96°F (36°C), lows near 63°F (17°C), about 0 wet days - typically the hottest month and the driest month and the sunniest month of the year in Stockton.
Stockton weather in August
August brings highs around 95°F (35°C), lows near 63°F (17°C), about 0 wet days.
Stockton weather in September
September brings highs around 90°F (32°C), lows near 61°F (16°C), about 1 wet days.
Stockton weather in October
October brings highs around 80°F (27°C), lows near 54°F (12°C), about 2 wet days.
Stockton weather in November
November brings highs around 64°F (18°C), lows near 45°F (7°C), about 6 wet days.
Stockton weather in December
December brings highs around 56°F (13°C), lows near 41°F (5°C), about 10 wet days - typically the coldest month and the wettest month of the year in Stockton.
Seasons in Stockton
Spring (March through May)
Spring in Stockton is mild and warm, with daytime highs averaging 73°F (23°C) and nights around 50°F (10°C); rain falls on about 17 days over the three months.
Summer (June through August)
Summer in Stockton turns very hot, with daytime highs averaging 94°F (34°C) and nights around 62°F (17°C); precipitation is infrequent.
Fall (September through November)
Fall in Stockton is pleasantly warm, with daytime highs averaging 78°F (26°C) and nights around 53°F (12°C); rain falls on about 9 days over the three months.
Winter (December through February)
Winter in Stockton is crisp but comfortable, with daytime highs averaging 58°F (14°C) and nights around 41°F (5°C); expect showers on roughly 27 days across the season.
Climate questions, answered
What is the average temperature in Stockton?
Is Stockton hot in summer?
Is Stockton cold in winter?
How many rainy days does Stockton get in a year?
Best time to visit Stockton
The best time to visit Stockton is generally April to May and October to November, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 72°F (22°C).
Pack for Stockton with lightweight, breathable clothing and strong sun protection for the hot months; a warm jacket and layers for the cooler season; rain gear if you travel around December. Evenings can feel noticeably cooler than afternoons - July nights average 63°F (17°C).
Stockton temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.