Moreno Valley, California Weather
Ceanothus blooms again. Day 93 of summer. Read this microseason across nine climate regions →
Moreno Valley weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 1:50 AM PDT · Open-Meteo
- TodaySep 21Clear later——81°60°—
- TuesdaySep 22Partly Cloudy——83°59°+2°
- WednesdaySep 23Clear——93°62°+10°
- ThursdaySep 24Clear——93°65°0°
- FridaySep 25Mostly Clear——95°66°+2°
- SaturdaySep 26Overcast——97°68°+2°
- SundaySep 27Overcast——92°69°-5°
Air quality now AQI 61 · Moderate
AQI 61 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 16.9 µg/m³ (AQI 66) with a 0.84 fine-to-coarse ratio and 2 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 16.9 µg/m³ (AQI 66) with a 0.84 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.84
- 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
- 4:08 PM
- Moonset
- 1:33 AM
- In sign
- ♑︎ Capricorn
Ceanothus blooms again
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Moreno Valley at a glance
- Today vs. normal: Today averages 71°F (high 81°F, low 60°F), 3°F below the 74°F normal for Sep 21
- Last frost: January 27 (1991–2020 median, NOAA station 13 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant tomatoes, peppers, beans, squash; harvest tomatoes, peppers, beans, summer squash, winter squash
15-Day Forecast — Moreno Valley
- Mon81°60°1%
- Tue83°59°0%
- Wed93°62°0%
- Thu93°65°3%
- Fri95°66°3%
- Sat97°68°1%
- Sun92°69°3%
- Mon99°74°6%
- Tue101°76°8%
- Wed84°73°7%
- Thu72°67°7%
- Fri90°66°10%
- Sat93°71°14%
- Sun97°73°11%
- Mon81°70°3%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Moreno Valley
Interactive wind and temperature map centered on Moreno Valley — 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 19) is weeks away. Fall transplants go in about 10–12 weeks before the first frost, September 26 to October 10 here. This city's planting calendar for September: plant tomatoes, peppers, beans, and squash; harvest tomatoes, peppers, beans, summer squash, and winter squash.
Sun & seasons in Moreno Valley
Moreno Valley sits in Riverside County, where the year’s longest day runs 14h 25m of daylight and its shortest just 9h 53m — a swing of +4h 31m 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 70 miles to the W. The nearest town Moreno Valley tracks is Riverside, roughly 11 miles to the W.
Air quality in Moreno Valley
Air quality in Moreno Valley’s county has trended cleaner since 2020; its cleanest year on record was 2022 (median AQI 77). See the full air-quality history for Moreno Valley.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | lettuce, peas, spinach, radishes | radishes, fall brassicas, carrots |
| 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 | garlic |
| June | beans, squash | beans, summer squash |
| July | beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| August | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| September | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, winter squash |
| October | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| November | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| December | — | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
A year in weather
August is Moreno Valley's warmest stretch (~80°F) and December its coldest (~50°F); precipitation crests in February at 2.7 inches and ebbs in June to 0.0 inches.
| Month | Mean temp | Precip |
|---|---|---|
| January | 50° | 2.5″ |
| February | 52° | 2.7″ |
| March | 54° | 2.5″ |
| April | 60° | 1.2″ |
| May | 67° | 0.4″ |
| June | 73° | 0.0″ |
| July | 79° | 0.4″ |
| August | 80° | 0.3″ |
| September | 76° | 0.3″ |
| October | 68° | 0.5″ |
| November | 57° | 1.2″ |
| December | 50° | 2.2″ |
Regional context
Similar climates March ARB, CA, Mead Valley, CA, Lakeview, CA
Drawing on modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Moreno Valley's January averages 50°F and July 79°F — 29°F apart — while precipitation totals roughly 14.3 inches.
Moreno Valley's moisture rides winter storm tracks: February brings 2.7 inches, while June sees only 0.0 inches in the dry warm season. It is a winter-storm rhythm Moreno Valley shares with places like March ARB, CA, Mead Valley, CA and Lakeview, CA.
Moreno Valley's growing window opens around January 27, once Moreno Valley's overnight lows stop freezing — sow lettuce, chard, arugula, and mustard greens. Warm-soil crops in Moreno Valley wait about two weeks past Moreno Valley's last frost, once the soil warms. Around December 19, freezing nights resume in Moreno Valley and tender crops must come in. In about half of years, Moreno Valley's last freeze comes after January 27.
Similar climates: March ARB, CA, Mead Valley, CA, Lakeview, CA, Highgrove, CA, Loma Linda, CA.
Frequently asked
- When does it freeze in Moreno Valley?
- In Moreno Valley, expect the last spring frost near January 27; Moreno Valley's first autumn frost comes around December 19.
- What is the rainy season in Moreno Valley?
- February is the wettest month in Moreno Valley, about 2.7 inches on average; the year totals roughly 14 inches.
- What is the warmest month in Moreno Valley?
- On average August tops the year in Moreno Valley at about 80°F.
- What is the coldest month in Moreno Valley?
- The coldest stretch in Moreno Valley falls in December, around 50°F on average.
- When can I start a vegetable garden in Moreno Valley?
- Around January 27, start frost-hardy crops in Moreno Valley; tomatoes and basil belong a fortnight later.
- What hardiness zone is Moreno Valley?
- With December around 50°F, Moreno Valley's zone reflects that minimum — the USDA ZIP map confirms Moreno Valley's band.
- What is the 10-day forecast for Moreno Valley?
- Moreno 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 Moreno Valley?
- See this week's day-by-day rain chances for Moreno Valley in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Moreno Valley?
- Current conditions for Moreno 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 Moreno Valley forecast updated?
- The Moreno 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 Moreno Valley?
- Today's sunrise and sunset times for Moreno 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 Moreno Valley?
- The next few days in Moreno Valley's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Moreno Valley sits at 33.9°N; its climate zone is hot-summer Mediterranean (Köppen approximation).
ZIP codes in Moreno Valley
- 92551
- 92552
- 92553
- 92554
- 92555
- 92556
- 92557