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Measurable snow is rare in Corona: the 1991–2020 normal rounds to zero — only a trace in most years, and nights reach freezing on about 11 days a year. When snow or ice does arrive, it causes outsized trouble because roads are rarely treated — watch for Winter Weather Advisories and Freeze Warnings.
| Month | Snowfall | Days 1″+ | Days with snow cover | Freezing nights | Avg. low |
|---|---|---|---|---|---|
| November | 0″ | 0 | 0 | 1 | 45°F |
| December | 0″ | 0 | 0 | 5 | 40°F |
| January | 0″ | 0 | 0 | 3 | 42°F |
| February | 0″ | 0 | 0 | 2 | 43°F |
| Year | 0″ | 0 | 0 | 11 |
NOAA NCEI U.S. Climate Normals 1991–2020 — snowfall at Riverside Fire Stn 3 (11 mi from the city center, +141 ft elevation difference); temperatures at Chino Airport. Averages smooth out big years: single winters can bring half or double the normal.
All California winter alerts and cities → · National winter storm map → · Frost dates by ZIP code →
0 inches in an average year (NOAA U.S. Climate Normals 1991–2020, Riverside Fire Stn 3 station, 11 miles away).
This page checks the National Weather Service for active alerts at Corona's location every time you open it; the box at the top lists any winter storm, winter weather, cold or freeze alert in effect right now.
About 11 nights a year drop to 32 °F or below (NOAA 1991–2020); the coldest month, December, averages a low of 40 °F.