Mount Jurupa rising above Jurupa Valley

Weather · September

Jurupa Valley weather in September

Average highs of 91°F, lows of 62°F and 0.10 in of rain, from 30 years of weather records.

September is Jurupa Valley’s 3rd warmest month, with average highs of 91°F and lows of 62°F. That is 4° cooler than August, and 12° above the yearly average high.

Average high
91°F
Average low
62°F
Precipitation
0.10 in
Wet days
1
Sunrise · sunset
6:33 AM · 6:57 PM

September across the year

  1. 68°44°Jan
  2. 68°45°Feb
  3. 72°47°Mar
  4. 76°50°Apr
  5. 80°55°May
  6. 87°59°Jun
  7. 93°64°Jul
  8. 95°65°Aug
  9. 91°62°Sep
  10. 83°55°Oct
  11. 75°47°Nov
  12. 67°43°Dec

High and low Rain

What to wear in September

  • Hot days: light, breathable clothes, a sun hat, sunscreen and plenty of water for anything outdoors.

September is good for

  • Early-morning or evening outings, with indoor plans for the afternoon heat

What’s on in Jurupa Valley in September

See all upcoming events.

Around Jurupa Valley

Rubidoux fieldstone shed, Jurupa Valley
Rubidoux fieldstone shed 1Seauton , 14 August 2026 · CC BY 4.0
Jurupa Valley Agricultural Field
Jurupa Valley Agricultural Field 1Z3lvs · CC0
Jurupa Valley Agricultural Field
Jurupa Valley Agricultural Field 2Z3lvs · CC0

See Jurupa Valley

A look around town before you go.

#shorts Jurupa Discovery Center video thumbnail

THINGS TO DO · YOUTUBE SHORT

#shorts Jurupa Discovery Center

A local activity Short shared by Abel Ortiz.

Watch on YouTube ↗

September compared with the months around it

MonthHighLowRain
August95°F65°F0.00 in
September91°F62°F0.10 in
October83°F55°F0.30 in

Planning a trip? See the best time to visit Jurupa Valley and today’s forecast.

Questions

How hot does it get in Jurupa Valley in September?

Average highs are 91°F and average lows 62°F, for a daily mean of 77°F. Individual days run hotter or colder than these 30-year averages.

Does it rain in Jurupa Valley in September?

September averages 0.10 in of precipitation over about 1 days with at least 0.01 in. It is the 10th wettest month of the year.

What time is sunset in Jurupa Valley in September?

Around mid-September the sun rises about 6:33 AM and sets about 6:57 PM, for roughly 12.4 hours of daylight.

Is September a good time to visit Jurupa Valley?

The mildest months for visiting are April, May, October. September is hot, with Halloween events.

NOAA U.S. Climate Normals 1991–2020, Riverside Muni Ap station (4.2 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.

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