Riverside, CA Weather & Climate Normals
What a normal year in Riverside actually looks like
On the 30-year record NOAA keeps for Riverside, CA, the comfort score comes out to 75/100, mild with real seasons: A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. Only 9 months a year land in the 55–75°F range this site treats as mild.
How much Riverside's weather actually swings
Average temperatures in Riverside run from 56°F in Dec up to 81°F in Aug, a 25.1°F seasonal swing, a middling gap by national standards.
Riverside, month by month
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 70°F | 43°F | 2.19in | 0in |
| Feb | 70°F | 44°F | 2.47in | 0in |
| Mar | 73°F | 46°F | 1.58in | 0in |
| Apr | 78°F | 50°F | 0.58in | 0in |
| May | 81°F | 55°F | 0.2in | 0in |
| Jun | 89°F | 59°F | 0.08in | 0in |
| Jul | 95°F | 64°F | 0.12in | 0in |
| Aug | 97°F | 65°F | 0.13in | 0in |
| Sep | 93°F | 62°F | 0.15in | 0in |
| Oct | 84°F | 55°F | 0.44in | 0in |
| Nov | 76°F | 47°F | 0.68in | 0in |
| Dec | 69°F | 42°F | 1.4in | 0in |
If you're timing a visit, most of the year (9 of 12 months) are Riverside's mildest stretch; if you're moving there, you should plan around Aug's heat instead.
How wet Riverside actually gets
Over a typical year, Riverside sees about 10.02in of precipitation a year across roughly 28 days with measurable rain or snow, with 0in of snow a year.
Riverside against the rest of the country
Out of 4876 cities scored here, Riverside comes in at 211; within CA alone it ranks 211 of 429. Population is about 323,757.
Checking the actual forecast
These figures come from Riverside Fire Stn 3, CA US, the NOAA station 0.9 miles from Riverside, averaged over 30 years, not tomorrow's forecast.
More on how this is worked out
Why some cities show no snow or rain figure · What a 30-year climate normal actually is