Stockton, CA Weather
Stockton hourly forecast: next 24 hours
Today's high of 92°F (34°C) is right in line with the typical September high of 90°F (32°C).
Current conditions in detail
Stockton weather tomorrow (Wednesday, September 16)
Tomorrow in Stockton looks sunny, with a high of 83° and an overnight low of 59°. Rain is unlikely (2% chance). Winds top out near 14 mph, and the UV index reaches 6 (high).
Stockton 14-day forecast
About the weather in Stockton
Stockton runs on a dry-summer rhythm: the warmest months are also the driest. July averages less than 1 mm while the wet season peaks in December at 4.5 inches (113 mm). Highs range from 56°F (13°C) to 96°F (36°C).
Stockton weather: quick facts
- Hottest month: July - highs near 96°F (36°C)
- Coldest month: December - highs near 56°F (13°C)
- Decade extremes (2015-2024): 119°F (48°C) high · 28°F (-2°C) low
- Wettest month: December (10 rainy days) · Sunniest: July (13.9 h sun/day)
- Climate type: Mediterranean
- Annual swing: 17°C between the average warmest and coolest month · day to night: 14°C
- Months averaging 30°C or hotter: 4
- Average humidity: 62%
Temperatures through the year
5 months average under 20 mm of rain, the longest unbroken stretch running May through September. December sits at the other end of the year: 56°F (13°C) by day, 41°F (5°C) at night. At its warmest, in July, Stockton runs to 96°F (36°C) in the afternoon and back to 63°F (17°C) by dawn. Sunshine averages 10.5 hours a day over the year - sunnier than roughly 82% of the cities we track, peaking in July at 13.9 hours.
Rain, sun and snow
Relative humidity averages 62% across the year, drier than about 83% of the cities we track. Days and nights are about 14°C apart on average - wider than 97% of the 3496 cities in our dataset. Precipitation concentrates in December - 4.5 inches (113 mm) on 10 days - and thins out by July. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 119°F (48°C) and the lowest daily minimum 28°F (-2°C).
Season by season
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 comes on about 17 days over the three months. Daylight is generous - around 11.3 hours of sun a day.
Summer (June through August)
Through summer, Stockton is punishingly hot: 94°F (34°C) by day, 62°F (17°C) after dark, and precipitation is essentially absent. Daylight is generous - around 13.5 hours of sun a day.
Fall (September through November)
Fall in Stockton is mild and warm, with daytime highs averaging 78°F (26°C) and nights around 53°F (12°C); rain comes on about 9 days over the three months.
Winter (December through February)
Winter is mild here - highs near 58°F (14°C), nights near 41°F (5°C), and expect showers on roughly 27 days across the season.
Average temperatures in Stockton by month
| 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% |