Jurupa Valley, California Weather
Summer heat deepens across the valleys. Day 15 of summer. Read this microseason across nine climate regions →
Jurupa Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast——91°65°—
- MondayJul 6Clear——92°60°+1°
- TuesdayJul 7Clear——98°64°+6°
- WednesdayJul 8Clear——102°77°+4°
- ThursdayJul 9Clear——103°80°+1°
- FridayJul 10Overcast——100°80°-3°
- SaturdayJul 11Overcast——94°77°-6°
AQI 50 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.1 µg/m³ (AQI 60) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm 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
Ozone × UV × Sky
Ozone at AQI 40 now. With UV 12 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 63 around 1 PM.
- Present
- AQI 40
- UV peak
- 11.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 63
PM × Wind × Precip
PM2.5 at 14.1 µg/m³ (AQI 60) with a 0.77 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.77
- 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).








































If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:06 PM
- Moonset
- 11:08 AM
- In sign
- ♓︎ Pisces
Summer heat deepens across the valleys
Jurupa Valley at a glance
- Today vs. normal: 6°F above the seasonal normal for this latitude
- Last frost: March 11 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 92509
16-Day Forecast — Jurupa Valley
- Sun91°65°1%
- Mon92°60°1%
- Tue98°64°0%
- Wed102°77°0%
- Thu103°80°0%
- Fri100°80°0%
- Sat94°77°1%
- Sun91°76°1%
- Mon103°79°6%
- Tue106°85°13%
- Wed104°85°7%
- Thu107°85°13%
- Fri106°88°14%
- Sat100°87°12%
- Sun106°86°19%
- Mon107°85°18%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Jurupa Valley
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 | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
The year in Jurupa Valley tops out in August (~80°F) and dips lowest in January (~52°F), with February wettest at 3.4 inches and August driest at 0.0 inches.
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 52° | 3.3″ | 11 |
| February | 54° | 3.4″ | 10 |
| March | 57° | 3.0″ | 13 |
| April | 62° | 1.5″ | 10 |
| May | 67° | 0.5″ | 7 |
| June | 73° | 0.1″ | 3 |
| July | 79° | 0.1″ | 1 |
| August | 80° | 0.0″ | 1 |
| September | 76° | 0.1″ | 2 |
| October | 69° | 0.5″ | 5 |
| November | 59° | 1.6″ | 8 |
| December | 53° | 2.6″ | 10 |
Regional context
Jurupa Valley swings from 52°F in January to 79°F in July (27°F) per NOAA NCEI 1991-2020 normals; precipitation in Jurupa Valley runs about 16.7 inches on roughly 82 measurable days.
Precipitation in Jurupa Valley peaks in the cool season: February averages 3.4 inches across 9.9 storm-fed days, while August bottoms out at 0.0 inches over just 0.9 rainy days. That groups Jurupa Valley with places like Bloomington, CA, Riverside, CA and Fontana, CA on the same cool-season storm track.
Hard freezes are rare in Jurupa Valley: the coldest month averages 52°F, so Jurupa Valley's growing window runs most of the year. August is the hottest stretch near 80°F, pushing cool-season crops to the milder shoulder months. Jurupa Valley's coastal lots stay 4-7°F milder overnight than Jurupa Valley's inland parcels.
Similar climates: Bloomington, CA, Riverside, CA, Fontana, CA, Eastvale, CA, Norco, CA.
Naturalist notes
In late May, western fence lizards emerge in force across open rocky ground and sun-warmed retaining walls as daytime highs push into the 80s.
By late April, cliff swallows are gathering mud for their gourd-shaped nests on the undersides of freeway overpasses and bridges throughout the valley.
Frequently asked
- When does it freeze in Jurupa Valley?
- Frost typically leaves Jurupa Valley by mid-March and returns to Jurupa Valley near mid-December.
- What is the rainy season in Jurupa Valley?
- Jurupa Valley sees its heaviest rain in February (around 3.4 inches), part of roughly 17 inches a year.
- What is the warmest month in Jurupa Valley?
- The warmest stretch in Jurupa Valley comes in August, around 80°F on average.
- What is the coldest month in Jurupa Valley?
- On average January is the chilliest month in Jurupa Valley, about 52°F.
- When can I start a vegetable garden in Jurupa Valley?
- Jurupa Valley's last frost (mid-March) cues hardy greens; in Jurupa Valley, hold heat-lovers two weeks past.
- How many rainy days does Jurupa Valley get?
- Jurupa Valley records around 82 days of measurable precipitation annually.
- What hardiness zone is Jurupa Valley?
- Jurupa Valley's hardiness zone tracks its winter low; with January near 52°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Jurupa Valley?
- Jurupa Valley'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 Jurupa Valley?
- See this week's day-by-day rain chances for Jurupa Valley in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Jurupa Valley?
- Current conditions for Jurupa Valley and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Jurupa Valley forecast updated?
- The Jurupa Valley forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Jurupa Valley?
- Today's sunrise and sunset times for Jurupa Valley 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 Jurupa Valley?
- The next few days in Jurupa Valley's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Climate
Jurupa Valley, California has a hot-summer Mediterranean climate: January averages roughly 52°F, July about 79°F, 27°F between them.
Across the year, Jurupa Valley collects about 17 inches of precipitation over roughly 82 days with measurable rain or snow.
At 34.0°N, Jurupa Valley's 27°F summer-to-winter swing sets when Jurupa Valley's gardens wake and when frost returns.
ZIP codes in Jurupa Valley
- 92509
- 91752
- 92519