Riverside, CA 92521 Weather

Riverside County12:12 AM PDT33.95°N, 117.40°W

Current conditions

Clear
70°
Clear
Feels like 70°
High 84°·Low 61° tonight
WindCalm
Humidity53%
Dew point52°
Pressure29.89 inHg
Visibility10 mi
Cloud cover5%
UV index0 Low
Sunrise6:59 AM
Sunset6:11 PM

Observed at Riverside Municipal Airport · 1 hr ago

Forecast

10-day

  • Tonight

    Mostly clear, with a low around 61. Southeast wind around 0 mph.

  • Tuesday

    Sunny, with a high near 84. South wind 0 to 5 mph.

  • Tuesday Night

    Partly cloudy, with a low around 60. Southwest wind 0 to 5 mph.

National Weather Service forecast updated 12 hrs ago.

Hourly

Hourly forecast
  1. Now Clear 68°
  2. 1 AM Clear 66°
  3. 2 AM Mostly Clear 64°
  4. 3 AM Mostly Clear 63°
  5. 4 AM Mostly Clear 63°
  6. 5 AM Mostly Clear 62°
  7. 6 AM Sunny 62°
  8. 7 AM Sunny 61°
  9. 8 AM Sunny 63°
  10. 9 AM Sunny 68°
  11. 10 AM Sunny 73°
  12. 11 AM Sunny 77°
  13. 12 PM Sunny 80°
  14. 1 PM Sunny 82°
  15. 2 PM Sunny 83°
  16. 3 PM Sunny 83°
  17. 4 PM Sunny 84°
  18. 5 PM Sunny 82°
  19. 6 PM Mostly Clear 79°
  20. 7 PM Mostly Clear 76°
  21. 8 PM Mostly Clear 73°
  22. 9 PM Mostly Clear 71°
  23. 10 PM Mostly Clear 69°
  24. 11 PM Partly Cloudy 68°

10-day forecast

Details
  1. TonightOct 19 Mostly Clear Mostly Clear61°
  2. TodayOct 20 Sunny Sunny60°84°
  3. WedOct 21 Rain Showers Likely Rain Showers Likely86%56°77°
  4. ThuOct 22 Showers And Thunderstorms Showers And Thunderstorms76%54°69°
  5. FriOct 23 Sunny Sunny55°73°
  6. SatOct 24 Sunny Sunny56°79°
  7. SunOct 25 Sunny Sunny57°80°
  8. MonOct 26 Mostly Sunny Mostly Sunny78°
  9. TueOct 27 Cloudy Cloudy55°87°
  10. WedOct 28 Cloudy Cloudy61°86°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
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Weather news near Riverside

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Air quality

66
Moderate
Fine particles (PM2.5)

Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Forecast

  • TueModerate (62)

Metro Riverside CO, CA reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 6:59 AM
Sunset 6:11 PM
Daylight 11 h 11 min (−1 min 59 s tomorrow)
Waxing Gibbous · 66% lit
Moonrise 3:10 PM Moonset 1:23 AM
Full moon Oct 26 New moon Nov 8

Nearby

Forecasters' discussion

From the National Weather Service office in SGX, issued 1 hr ago

Synopsis

Onshore flow will begin to spread cooling inland today with a return of coastal low clouds and fog likely for tonight into Tuesday morning. A low pressure system from the north will bring greater cooling for Wednesday and Thursday along with showers and a chance of thunderstorms, most likely for Wednesday night through Thursday afternoon. Then dry and warmer for next weekend.

Discussion

FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES...

...UPDATED AVIATION DISCUSSION...

Onshore flow ahead of a low pressure system approaching from the northwest will help to spread the low clouds into the coastal areas tonight. A developing coastal eddy, cyclonic flow aloft and falling heights will cause the marine layer to deepen and the clouds to lift overnight into Tuesday morning.

We can expect a general cooling trend through Thursday as the low pressure system moves into SoCal. Thursday will likely be the coolest day, with temperatures from a few degrees to as much a 15 degrees below normal. Ahead of the system, moisture from the low latitudes will likely be drawn into socal with the flow aloft. The system will use this moisture to produce light precipitation as early as Wednesday morning. Precipitation will become more widespread, progressing from northwest to southeast across the region and increasing in intensity on Thursday as the system moves through Socal. Conditions become most unstable on Thursday as colder air moves in aloft from the northwest bringing a chance for thunderstorms for Thursday morning through Thursday afternoon. Precipitation will taper off by Friday morning as the upper level trough axis moves east and conditions become more stable.

For Orange and southwestern San Bernardino Counties, rainfall could range from around 1 inch for the Orange County coastal plain to around 1.5 inches on the coastal slopes of the mountains with amounts decreasing from north to south into San Diego County. For the 24 hr period ending at 5 pm Thursday, there is a 35 to 65 percent chance of greater than 1 inch of rainfall in San Diego County from the coast to the mountains. There is about a 30 to 45 percent chance of 1 inch or more in the Inland Empire and about a 45 to 65 percent chance in Orange County, the Santa Ana Mountains and on the slopes of the San Bernardino Mountains.

The snow level will drop to around 8,000 ft on Thursday afternoon and the highest peaks of the San Bernardino and San Jacinto mountains could get small amounts of snow.

Aviation

200530Z...Coast...Gradually increasing low clouds based around 1000- 1200 feet MSL overnight. Vis reduced 3-5SM on mesas. Cigs lifting some before scatter out 16-18Z Tuesday. Low clouds based around 1500- 2000 feet MSL to redevelop after 03Z Tuesday evening.

Otherwise...mostly clear and VFR conditions through Tuesday morning, until SCT-BKN clouds based around 10 kft develop over inland areas, especially mountains 19-01Z. Isold SHRA 21-01Z Tuesday.

Marine

No hazardous marine conditions are expected through Wednesday morning. A storm system moves into the region later Wednesday through Thursday, bringing gusts at or exceeding 20 knots and associated choppy seas, along with a 10-20% chance of TSRA.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Conservative index and reflects what the press published. Terms of use.