Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Castro Valley is from June, July, August. — consistent weather climate
🌥Mild
| Score | 48 | 60 | 50 | 80 | 92 | 98 | 99 | 98 | 97 | 94 | 74 | 39 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Mild | Mild | Mild | Mild | Pleasant | Pleasant | Pleasant | Mild | Cold |
| Temperature | 7–14°C | 6–16°C | 7–15°C | 9–17°C | 11–19°C | 12–21°C | 13–22°C | 14–23°C | 14–23°C | 13–23°C | 8–17°C | 7–14°C |
| Feels like | 4–12°C | 3–13°C | 5–13°C | 7–16°C | 9–18°C | 11–21°C | 12–22°C | 14–23°C | 14–23°C | 12–21°C | 6–15°C | 4–13°C |
| Precipitation | 117mm 10 days | 83mm 7 days | 125mm 13 days | 29mm 4 days | 24mm 4 days | 3mm 1 days | 1mm 1 days | 3mm 1 days | 8mm 2 days | 35mm 3 days | 61mm 6 days | 176mm 13 days |
| Sunshine | 6.8h ☀︎ 69% | 9.0h ☀︎ 83% | 9.3h ☀︎ 77% | 11.3h ☀︎ 86% | 12.5h ☀︎ 88% | 13.0h ☀︎ 88% | 12.6h ☀︎ 87% | 12.1h ☀︎ 89% | 11.2h ☀︎ 90% | 9.7h ☀︎ 87% | 8.6h ☀︎ 85% | 6.5h ☀︎ 67% |
| Wind | NE · 17 km/h | NW · 18 km/h | W · 20 km/h | W · 21 km/h | W · 22 km/h | W · 22 km/h | W · 20 km/h | W · 20 km/h | W · 19 km/h | W · 17 km/h | N · 15 km/h | NE · 16 km/h |
| Humidity (%) | 81% | 74% | 77% | 78% | 76% | 75% | 77% | 77% | 77% | 69% | 72% | 81% |
| Day length | 9.9h | 10.8h | 12.0h | 13.2h | 14.2h | 14.7h | 14.5h | 13.6h | 12.4h | 11.2h | 10.1h | 9.6h |