SAINT HELENA, CA US
GHCN ID: USC00047643 · CA, US · 68.6 m elevation · Records 1907-2023 (116 years)
Primary station for St. Helena, CA.
Monthly climate normals (1991-2020)
| Month | High | Low | Mean | Precip | Snow |
|---|---|---|---|---|---|
| January | 58.8°F | 40.2°F | 49.5°F | 6.47 in | — |
| February | 62.5°F | 41.9°F | 52.2°F | 6.71 in | — |
| March | 66.8°F | 43.9°F | 55.4°F | 4.98 in | — |
| April | 71.8°F | 46.3°F | 59.0°F | 1.97 in | — |
| May | 78.1°F | 50.5°F | 64.3°F | 1.31 in | — |
| June | 85.4°F | 54.2°F | 69.8°F | 0.35 in | — |
| July | 88.7°F | 56.0°F | 72.4°F | 0.01 in | — |
| August | 88.8°F | 55.7°F | 72.3°F | 0.04 in | — |
| September | 86.6°F | 53.8°F | 70.2°F | 0.06 in | — |
| October | 78.1°F | 49.4°F | 63.7°F | 1.65 in | — |
| November | 65.8°F | 43.7°F | 54.7°F | 3.24 in | — |
| December | 58.3°F | 39.6°F | 48.9°F | 7.18 in | — |