Stockton, California Weather
Ceanothus blooms again. Day 93 of summer. Read this microseason across nine climate regions →
Stockton weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 7:25 AM PDT · Open-Meteo
- TodaySep 21Clear——82°57°—
- TuesdaySep 22Clear——85°54°+3°
- WednesdaySep 23Clear——95°60°+10°
- ThursdaySep 24Overcast——97°67°+2°
- FridaySep 25Overcast——89°63°-8°
- SaturdaySep 26Overcast——91°62°+2°
- SundaySep 27Overcast——83°59°-8°
Air quality now AQI 55 · Moderate
AQI 55 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.9 µg/m³ (AQI 56) with a 0.78 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 11.9 µg/m³ (AQI 56) with a 0.78 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.78
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:35 PM
- Moonset
- 1:38 AM
- In sign
- ♑︎ Capricorn
Ceanothus blooms again
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Stockton at a glance
- Today vs. normal: Today averages 70°F (high 82°F, low 57°F), about the 71°F normal for Sep 21
- Last frost: February 5 (1991–2020 median, NOAA station 3 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant beans, squash, fall brassicas, carrots; harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Stockton
- Mon82°57°1%
- Tue85°54°1%
- Wed95°60°0%
- Thu97°67°0%
- Fri89°63°0%
- Sat91°62°0%
- Sun83°59°1%
- Mon92°59°1%
- Tue95°64°1%
- Wed99°68°2%
- Thu93°72°1%
- Fri93°78°9%
- Sat101°73°0%
- Sun100°75°0%
- Mon92°63°0%
- Tue90°62°0%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Stockton
Interactive wind and temperature map centered on Stockton — it loads in your browser. Open the full weather map.
Right now in the garden
Peak growing season
As of September 21, the growing season is at its peak — the first frost (around December 8) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 15 to September 29 here. This city's planting calendar for September: plant beans, squash, fall brassicas, and carrots; harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Stockton
Stockton sits in San Joaquin County, where the year’s longest day runs 14h 48m of daylight and its shortest just 9h 32m — a swing of +5h 17m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Los Angeles, the state’s largest city, lies about 312 miles to the SSE. The nearest town Stockton tracks is Antioch, roughly 26 miles to the W.
Air quality in Stockton
Air quality in Stockton’s county has trended cleaner since 2020; its cleanest year on record was 2025 (median AQI 46). See the full air-quality history for Stockton.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | — |
| February | lettuce, peas, spinach, radishes | lettuce, spinach, radishes |
| March | — | lettuce, peas, spinach, radishes |
| April | tomatoes, peppers, beans, squash | lettuce, peas, spinach |
| May | tomatoes, peppers, beans, squash | peas, garlic |
| June | beans, squash | beans, summer squash |
| July | beans, squash | tomatoes, peppers, beans, summer squash |
| August | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| September | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| October | — | tomatoes, peppers, beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| December | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
The year in Stockton tops out in July (~75°F) and dips lowest in December (~47°F), with January wettest at 3.8 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip |
|---|---|---|
| January | 47° | 3.8″ |
| February | 50° | 3.6″ |
| March | 53° | 3.1″ |
| April | 59° | 1.5″ |
| May | 66° | 0.6″ |
| June | 72° | 0.1″ |
| July | 75° | 0.0″ |
| August | 74° | 0.0″ |
| September | 72° | 0.1″ |
| October | 65° | 0.7″ |
| November | 54° | 2.5″ |
| December | 47° | 3.6″ |
Regional context
Similar climates Country Club, CA, Lincoln Village, CA, August, CA
Drawing on modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Stockton's January averages 47°F and July 75°F — 28°F apart — while precipitation totals roughly 19.7 inches.
Stockton's moisture rides winter storm tracks: January brings 3.8 inches, while August sees only 0.0 inches in the dry warm season. That groups Stockton with places like Country Club, CA, Lincoln Village, CA and August, CA on the same cool-season storm track.
By February 5 the frosts ease in Stockton, opening the season for lettuce, chard, arugula, and mustard greens. Warm-soil crops in Stockton wait about two weeks past Stockton's last frost, once the soil warms. Stockton's window closes around December 8 as Stockton's overnight lows return below freezing. In about half of years, Stockton's last freeze comes after February 5.
Similar climates: Country Club, CA, Lincoln Village, CA, August, CA, Garden Acres, CA, Taft Mosswood, CA.
Frequently asked
- When does it freeze in Stockton?
- In Stockton, expect the last spring frost near February 5; Stockton's first autumn frost comes around December 8.
- What is the rainy season in Stockton?
- Stockton sees its heaviest rain in January (around 3.8 inches), part of roughly 20 inches a year.
- What is the warmest month in Stockton?
- Stockton peaks in July, when the mean runs near 75°F.
- What is the coldest month in Stockton?
- December is Stockton's coldest month, averaging about 47°F.
- When can I start a vegetable garden in Stockton?
- Around February 5, start frost-hardy crops in Stockton; tomatoes and basil belong a fortnight later.
- What hardiness zone is Stockton?
- Since December in Stockton averages 47°F, Stockton's USDA zone follows that floor — confirm it by ZIP.
- What is the 10-day forecast for Stockton?
- Stockton's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Stockton?
- See this week's day-by-day rain chances for Stockton in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Stockton?
- Current conditions for Stockton and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Stockton forecast updated?
- The Stockton forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Stockton?
- Today's sunrise and sunset times for Stockton are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Stockton?
- The next few days in Stockton's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Stockton sits at 38.0°N; its climate zone is hot-summer Mediterranean (Köppen approximation).
ZIP codes in Stockton
- 95201
- 95202
- 95203
- 95204
- 95205
- 95206
- 95207
- 95209
- 95210
- 95211
- 95212
- 95215
- 95219
- 95267
- 95269
- 95296
- 95297