Shasta Lake, CA
Climate overview — based on NOAA 1991-2020 normals from SHASTA DAM, CA US.
Year-round temperatures (°F)
Climate summary
Shasta Lake has an annual average temperature of 63.5°F with about 63 inches of precipitation per year. The warmest month is July (average high 97.0°F), and the coldest is January (average low 40.5°F). December is typically the wettest month (11.99 in) and July the driest (0.14 in).
Best time to visit Shasta Lake
Full guide →Climate change signal
All-time records →91 of 366 (24.9%) of Shasta Lake'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.
| 1940s | 54 | |
| 1950s | 26 | |
| 1960s | 22 | |
| 1970s | 29 | |
| 1980s | 69 | |
| 1990s | 27 | |
| 2000s | 36 | |
| 2010s | 45 | |
| 2020s | 58 |
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 | 55.0°F | 40.5°F | 47.8°F | 10.51 in | — | 14 |
| February | 58.7°F | 41.7°F | 50.2°F | 11.41 in | — | 13 |
| March | 63.4°F | 43.9°F | 53.6°F | 9.24 in | — | 13 |
| April | 69.6°F | 47.6°F | 58.6°F | 4.61 in | — | 10 |
| May | 78.9°F | 55.4°F | 67.1°F | 2.93 in | — | 8 |
| June | 88.2°F | 63.0°F | 75.6°F | 1.51 in | — | 3 |
| July | 97.0°F | 69.0°F | 83.0°F | 0.14 in | — | 1 |
| August | 96.0°F | 67.7°F | 81.8°F | 0.16 in | — | 1 |
| September | 90.3°F | 63.0°F | 76.6°F | 0.52 in | — | 2 |
| October | 77.6°F | 54.8°F | 66.2°F | 3.43 in | — | 5 |
| November | 62.4°F | 46.0°F | 54.2°F | 6.59 in | — | 10 |
| December | 54.2°F | 40.6°F | 47.4°F | 11.99 in | — | 14 |
Climate twins of Shasta Lake
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).