Clarksburg, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Clarksburg weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Mostly Clear——84°58°—
- MondayJul 6Overcast——82°55°-2°
- TuesdayJul 7Overcast——90°54°+8°
- WednesdayJul 8Clear——96°54°+6°
- ThursdayJul 9Overcast——99°56°+3°
- FridayJul 10Overcast——101°58°+2°
- SaturdayJul 11Overcast——103°60°+2°
AQI 27 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 4.8 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
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 4.8 µg/m³, PM10 at 6.3 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.76
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:25 PM
- Moonset
- 11:24 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Clarksburg at a glance
- Today vs. normal: 73°F — typical for the season
- Last frost: April 7 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 95612
16-Day Forecast — Clarksburg
- Sun84°58°0%
- Mon82°55°0%
- Tue90°54°0%
- Wed96°54°0%
- Thu99°56°0%
- Fri101°58°1%
- Sat103°60°0%
- Sun79°65°1%
- Mon103°68°3%
- Tue107°63°5%
- Wed106°62°1%
- Thu108°63°3%
- Fri110°67°3%
- Sat103°65°3%
- Sun99°63°3%
- Mon99°59°6%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
Microseason · July 1–5
Summer heat deepens across the valleys
Inland temperatures exceed 95°F regularly; fire danger reaches moderate to high across most of the region.
Day 186 of 365 · Wedge 37 of 72
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | — | — |
| April | lettuce, peas, spinach, radishes | — |
| May | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | tomatoes, peppers, beans, squash | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | fall brassicas, garlic (overwinter), carrots | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | — | — |
| December | — | — |
A year in weather
The year in Clarksburg tops out in July (~78°F) and dips lowest in December (~49°F), with January wettest at 3.9 inches and July driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 49° | 3.9″ | 7 |
| February | 53° | 3.6″ | 7 |
| March | 57° | 2.8″ | 6 |
| April | 61° | 1.4″ | 3 |
| May | 68° | 0.9″ | 2 |
| June | 74° | 0.2″ | 1 |
| July | 78° | 0.0″ | 0 |
| August | 77° | 0.0″ | 0 |
| September | 74° | 0.1″ | 0 |
| October | 66° | 0.9″ | 2 |
| November | 55° | 1.8″ | 4 |
| December | 49° | 3.5″ | 6 |
Frequently asked
- When does it freeze in Clarksburg?
- In Clarksburg, expect the last spring frost near mid-April; Clarksburg's first autumn frost comes around mid-November.
- What is the rainy season in Clarksburg?
- Clarksburg sees its heaviest rain in January (around 3.9 inches), part of roughly 19 inches a year.
- What is the warmest month in Clarksburg?
- July is Clarksburg's warmest month, averaging about 78°F.
- What is the coldest month in Clarksburg?
- Clarksburg bottoms out in December, with a mean near 49°F.
- When can I start a vegetable garden in Clarksburg?
- Clarksburg's last frost (mid-April) cues hardy greens; in Clarksburg, hold heat-lovers two weeks past.
- How many rainy days does Clarksburg get?
- Expect roughly 38 wet days a year in Clarksburg.
- What hardiness zone is Clarksburg?
- Clarksburg sits in the USDA zone set by December lows near 49°F; the USDA ZIP tool gives the band.
- What is the 10-day forecast for Clarksburg?
- Clarksburg'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 Clarksburg?
- See this week's day-by-day rain chances for Clarksburg in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Clarksburg?
- Current conditions for Clarksburg and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Clarksburg forecast updated?
- The Clarksburg forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Clarksburg?
- Today's sunrise and sunset times for Clarksburg 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 Clarksburg?
- The next few days in Clarksburg's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Clarksburg, California has a hot-summer Mediterranean climate: January averages roughly 49°F, July about 78°F, 29°F between them.
In a typical year Clarksburg records about 19 inches of precipitation on around 38 days.
Latitude 38.4°N gives Clarksburg its 29°F swing, and with it the rhythm of Clarksburg's growing season.
ZIP codes in Clarksburg
- 95612