Pleasant Hill, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Pleasant Hill weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Mostly Clear——76°57°—
- MondayJul 6Overcast——74°54°-2°
- TuesdayJul 7Overcast——76°52°+2°
- WednesdayJul 8Overcast——85°52°+9°
- ThursdayJul 9Overcast——84°53°-1°
- FridayJul 10Overcast——88°52°+4°
- SaturdayJul 11Overcast——92°55°+4°
AQI 30 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 5.1 µg/m³, PM10 at 6.6 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 5.1 µg/m³, PM10 at 6.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.77
- Wind
- light
- 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
- 11:27 PM
- Moonset
- 11:27 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Pleasant Hill at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 4 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 94523
16-Day Forecast — Pleasant Hill
- Sun76°57°1%
- Mon74°54°0%
- Tue76°52°1%
- Wed85°52°0%
- Thu84°53°0%
- Fri88°52°0%
- Sat92°55°0%
- Sun95°55°1%
- Mon102°64°3%
- Tue99°62°5%
- Wed85°63°1%
- Thu95°70°3%
- Fri103°69°0%
- Sat106°71°3%
- Sun99°57°0%
- Mon86°54°3%
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
In Pleasant Hill, July runs warmest near 70°F and January coldest around 49°F, while January is the wettest month (3.5 inches) and July the driest (0.0 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 49° | 3.5″ | 13 |
| February | 51° | 3.3″ | 12 |
| March | 53° | 2.7″ | 13 |
| April | 58° | 1.4″ | 9 |
| May | 64° | 0.5″ | 4 |
| June | 68° | 0.0″ | 1 |
| July | 70° | 0.0″ | 1 |
| August | 70° | 0.0″ | 1 |
| September | 69° | 0.1″ | 1 |
| October | 64° | 0.6″ | 4 |
| November | 55° | 2.2″ | 8 |
| December | 49° | 3.2″ | 12 |
Regional context
Pleasant Hill's climate, from NOAA NCEI 1991-2020 station normals, pairs 49°F Januarys with 70°F Julys — a 22°F swing. About 17.5 inches of precipitation falls over roughly 79 days a year.
Cool-season fronts carry Pleasant Hill's rain: January logs 3.5 inches on 13.3 days, against July's 0.0 inches on 0.9 — winter does the heavy lifting in Pleasant Hill. That cool-season-wet pattern aligns Pleasant Hill with places like Reliez Valley, CA, Contra Costa Centre, CA and Pacheco, CA.
Freezes are uncommon in Pleasant Hill, where the coldest month averages 49°F; cool-season crops grow fall through spring. Summer heat in July (about 70°F) is the binding constraint, not cold. Pleasant Hill's coastal lots stay 4-7°F milder overnight than Pleasant Hill's inland parcels.
Similar climates: Reliez Valley, CA, Contra Costa Centre, CA, Pacheco, CA, Alhambra Valley, CA, Acalanes Ridge, CA.
Frequently asked
- When does it freeze in Pleasant Hill?
- Pleasant Hill's last spring frost lands near mid-April, and in Pleasant Hill the first fall frost follows around mid-November.
- What is the rainy season in Pleasant Hill?
- Rainfall in Pleasant Hill peaks in January near 3.5 inches, out of about 18 inches annually.
- What is the warmest month in Pleasant Hill?
- Pleasant Hill peaks in July, when the mean runs near 70°F.
- What is the coldest month in Pleasant Hill?
- January is Pleasant Hill's coldest month, averaging about 49°F.
- When can I start a vegetable garden in Pleasant Hill?
- In Pleasant Hill, sow peas and hardy greens around mid-April; Pleasant Hill's tomatoes and peppers wait two weeks more.
- How many rainy days does Pleasant Hill get?
- Pleasant Hill records around 79 days of measurable precipitation annually.
- What hardiness zone is Pleasant Hill?
- With January around 49°F, Pleasant Hill's zone reflects that minimum — the USDA ZIP map confirms Pleasant Hill's band.
- What is the 10-day forecast for Pleasant Hill?
- Pleasant Hill'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 Pleasant Hill?
- See this week's day-by-day rain chances for Pleasant Hill in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Pleasant Hill?
- Current conditions for Pleasant Hill and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Pleasant Hill forecast updated?
- The Pleasant Hill forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Pleasant Hill?
- Today's sunrise and sunset times for Pleasant Hill 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 Pleasant Hill?
- The next few days in Pleasant Hill's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
In Pleasant Hill, California, the hot-summer Mediterranean climate runs from about 49°F in January to 70°F in July, a 21°F seasonal range.
Across the year, Pleasant Hill collects about 18 inches of precipitation over roughly 79 days with measurable rain or snow.
From 38.0°N, Pleasant Hill sees a 21°F seasonal swing that governs Pleasant Hill's planting and frost windows.
ZIP codes in Pleasant Hill
- 94523