Norco, CA
Climate overview — based on NOAA 1991-2020 normals from CHINO AP, CA US.
Year-round temperatures (°F)
Climate summary
Norco has an annual average temperature of 66.1°F with about 10 inches of precipitation per year. The warmest month is August (average high 96.3°F), and the coldest is December (average low 40.4°F). February is typically the wettest month (2.68 in) and August the driest (0.01 in).
Best time to visit Norco
Full guide →Climate change signal
All-time records →203 of 366 (55.5%) of Norco's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1990s | 9 | |
| 2000s | 100 | |
| 2010s | 147 | |
| 2020s | 110 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 69.5°F | 41.7°F | 55.6°F | 2.17 in | — | 5 |
| February | 69.8°F | 42.9°F | 56.4°F | 2.68 in | — | 6 |
| March | 72.5°F | 45.8°F | 59.1°F | 1.43 in | — | 5 |
| April | 77.0°F | 48.7°F | 62.8°F | 0.55 in | — | 4 |
| May | 81.1°F | 54.3°F | 67.7°F | 0.17 in | — | 1 |
| June | 87.6°F | 58.5°F | 73.0°F | 0.02 in | — | 0 |
| July | 93.7°F | 62.9°F | 78.3°F | 0.08 in | — | 0 |
| August | 96.3°F | 63.2°F | 79.8°F | 0.01 in | — | 0 |
| September | 92.7°F | 60.4°F | 76.5°F | 0.06 in | — | 1 |
| October | 84.5°F | 53.3°F | 68.9°F | 0.53 in | — | 3 |
| November | 76.3°F | 45.1°F | 60.7°F | 0.59 in | — | 4 |
| December | 68.7°F | 40.4°F | 54.6°F | 1.69 in | — | 5 |
Climate twins of Norco
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).