Norco, CA Weather & Climate Normals
What a normal year in Norco actually looks like
On the 30-year record NOAA keeps for Norco, CA, the comfort score comes out to 70/100, mild with real seasons: A solid stretch of comfortable months alongside a noticeable but not extreme summer or winter. Only 8 months a year land in the 55–75°F range this site treats as mild.
How much Norco's weather actually swings
Average temperatures in Norco run from 55°F in Dec up to 80°F in Aug, a 25.2°F seasonal swing, a middling gap by national standards.
Norco, month by month
| Month | Avg high | Avg low | Precip |
|---|---|---|---|
| Jan | 70°F | 42°F | 2.17in |
| Feb | 70°F | 43°F | 2.68in |
| Mar | 73°F | 46°F | 1.43in |
| Apr | 77°F | 49°F | 0.55in |
| May | 81°F | 54°F | 0.17in |
| Jun | 88°F | 59°F | 0.02in |
| Jul | 94°F | 63°F | 0.08in |
| Aug | 96°F | 63°F | 0.01in |
| Sep | 93°F | 60°F | 0.06in |
| Oct | 85°F | 53°F | 0.53in |
| Nov | 76°F | 45°F | 0.59in |
| Dec | 69°F | 40°F | 1.69in |
If you're timing a visit, most of the year (8 of 12 months) are Norco's mildest stretch; if you're moving there, you should plan around Aug's heat and Dec's cold instead.
How wet Norco actually gets
Norco averages 9.98in of precipitation a year across roughly 35 days with measurable rain or snow; the nearest NOAA station does not record snowfall, so no snow figure is shown rather than guessed.
Norco against the rest of the country
Out of 4876 cities scored here, Norco comes in at 247; within CA alone it ranks 240 of 429. Population is about 25,400.
Checking the actual forecast
These figures come from Chino Ap, CA US, the NOAA station 5.9 miles from Norco, 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