TODAY NOV24
TEMPERATURE68°F
HUMIDITY28%
PRESSURE30.09 inHg
WIND COND.60° 8.1 mph
  • 10166Mon
  • 10164Tue
  • 9962Wed
  • 9059Thu
  • 8758Fri
daynightWeather update from Riverside Municipal Airport, on 23 Oct 3:20 am PDT

Grand Average Weather

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January24°F85°F53°F1.6"
February30°F88°F55°F1.8"
March31°F93°F56°F0.4"
April39°F97°F59°F0.6"
May46°F97°F65°F0.1"
June49°F104°F71°F0.0"
July55°F113°F79°Fn/a
August55°F103°F76°Fn/a
September49°F103°F73°F0.0"
October41°F102°F67°F0.3"
November35°F94°F62°F0.1"
December27°F86°F54°F0.2"

Did you know?

  • The highest monthly average temperature in Grand for July is 79 degrees.
  • The lowest monthly average temperature in Grand for January is 53 degrees.
  • The most monthly precipitation in Grand occurs in February with 1.8 inches.
  • The air quality index in Grand is 71% worse than the national average.
  • The pollution index in Grand is 346% worse than the national average.

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Compare Riverside, CA Weather To Other Cities

Grand air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
IndexGrandRiversideCalifornia
Air quality index858555
Pollution index22,790,90022,790,90018,233,782

Grand air quality information

MeasurementTotal
Days measured365
Days with good air quality24
Days with moderate air quality211
Days w/ poor A.Q. for sensitive groups102
Days with unhealthy air quality25

Grand air quality information

PollutantTotal
Arsenic0.060%
Benzene0.190%
Carbon Tetrachloride0.010%
Lead0.220%
Mercury0.230%

Average monthly Grand temperature with heat index

Grand monthly precipitation with daily maximum

Grand monthly snow depth with daily maximum

Grand monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Good Hope, CA8,9112746%
El Sobrante, CA13,1224314%
El Sobrante CDP (Riverside County), CA14,8554314%
El Cerrito CDP, CA5,5514314%
Eastvale, CA55,2988570%
Riverside, CA313,0418570%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Corpus Christi, TX312,6803922%
St. Louis, MO318,7276020%
Pittsburgh, PA306,0455612%
Lexington-Fayette, KY304,4734216%
Anchorage, AK298,1782942%
Riverside, CA313,0418570%
Source: The Grand, Riverside, CA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.