Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Saint Helens is from July, August, September. — consistent weather climate
🌥Mild
| Score | 5 | 11 | 28 | 51 | 77 | 79 | 96 | 94 | 85 | 70 | 8 | 5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Cold | Cool & rainy | Mild | Pleasant | Pleasant | Pleasant | Cool & rainy | Cold | Cold |
| Temperature | 3–8°C | 2–9°C | 3–12°C | 5–15°C | 9–19°C | 12–23°C | 14–28°C | 15–29°C | 13–25°C | 9–18°C | 4–11°C | 2–8°C |
| Feels like | 0–6°C | -1–7°C | 0–10°C | 2–14°C | 7–18°C | 11–23°C | 13–28°C | 14–28°C | 12–25°C | 7–17°C | 2–9°C | 0–6°C |
| Precipitation | 248mm 28 days | 140mm 21 days | 130mm 22 days | 132mm 18 days | 102mm 15 days | 82mm 12 days | 7mm 2 days | 17mm 4 days | 63mm 7 days | 122mm 14 days | 233mm 22 days | 246mm 25 days |
| Sunshine | 2.1h ☀︎ 23% | 4.0h ☀︎ 38% | 5.6h ☀︎ 47% | 7.6h ☀︎ 56% | 9.5h ☀︎ 63% | 11.6h ☀︎ 74% | 13.1h ☀︎ 86% | 11.6h ☀︎ 82% | 10.0h ☀︎ 80% | 6.8h ☀︎ 62% | 3.7h ☀︎ 39% | 2.3h ☀︎ 26% |
| Wind | SE · 14 km/h | SE · 13 km/h | SE · 13 km/h | NW · 15 km/h | NW · 15 km/h | NW · 16 km/h | NW · 17 km/h | NW · 17 km/h | NW · 15 km/h | N · 13 km/h | SE · 13 km/h | SE · 13 km/h |
| Humidity (%) | 89% | 85% | 84% | 78% | 76% | 72% | 65% | 65% | 71% | 82% | 88% | 89% |
| Day length | 9.1h | 10.4h | 11.9h | 13.6h | 15.0h | 15.7h | 15.3h | 14.1h | 12.5h | 10.9h | 9.5h | 8.7h |