Every state’s recordsCalifornia Weather Records
6 official all-time records
The official all-time extremes for California, as NOAA’s State Climate Extremes Committee lists them: from 134°F at Greenland Ranch to -45°F at Boca.
| Record | Date | Where | Station | Status |
|---|
| 134°F | July 10, 1913 | Greenland Ranch | 043603 | E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. |
| Record | Date | Where | Station | Status |
|---|
| -45°F | January 20, 1937 | Boca | 040931 | E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. |
Greatest 24-Hour Precipitation
Hourly precipitation values for Hoegee's Campground (in the mountains outside Los Angeles) indicate the greatest 24-hour rainfall occurred between 1:00 AM on January 22nd to 1:00 AM on January 23rd. During that period, the storm delivered 25.83 inches (corrected from previous reports of 26.12 inches). A detailed post-storm report was produced by the Weather Bureau.
| Record | Date | Where | Station | Status |
|---|
| 67 inches | January 5, 1982 | Echo Summit Sierra at Tahoe | 042671 | N: Value is changed from extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. |
| Record | Date | Where | Station | Status |
|---|
| 451 inches | March 11, 1911 | Tamarack | 048781 | E: Value is unchanged from previous extremes tables last updated by NCEI (formerly NCDC) between 1998 and 2006. Value exceeds all other valid values. |
| Record | Date | Where | Station | Status |
|---|
| 199 mph | February 20, 2017 | Alpine Summit (Ward Mt) | SUMAM (MesoWest) | SA |