Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in St. Charles is from June, August, September. — consistent weather climate
🌦Humid
| Score | 11 | 16 | 19 | 45 | 76 | 80 | 71 | 82 | 81 | 63 | 29 | 12 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Cool & rainy | Humid | Humid | Humid | Humid | Mild | Cold | Cold |
| Temperature | -7–0°C | -7–3°C | 0–10°C | 4–15°C | 11–21°C | 17–28°C | 19–28°C | 18–28°C | 15–24°C | 8–17°C | 2–10°C | -3–4°C |
| Feels like | -12–-4°C | -12–-2°C | -4–6°C | 0–12°C | 8–21°C | 16–29°C | 20–31°C | 19–30°C | 14–24°C | 6–15°C | -2–6°C | -8–0°C |
| Precipitation | 66mm 12 days | 47mm 8 days | 93mm 10 days | 100mm 12 days | 111mm 10 days | 102mm 8 days | 143mm 10 days | 81mm 8 days | 100mm 7 days | 90mm 9 days | 51mm 6 days | 61mm 8 days |
| Sunshine | 3.7h ☀︎ 39% | 7.3h ☀︎ 69% | 6.8h ☀︎ 56% | 8.2h ☀︎ 62% | 9.7h ☀︎ 66% | 11.6h ☀︎ 76% | 11.4h ☀︎ 77% | 11.3h ☀︎ 81% | 9.5h ☀︎ 76% | 7.7h ☀︎ 69% | 6.3h ☀︎ 64% | 4.0h ☀︎ 44% |
| Wind | W · 19 km/h | W · 20 km/h | W · 21 km/h | SW · 22 km/h | SE · 20 km/h | SW · 19 km/h | W · 16 km/h | SW · 16 km/h | S · 17 km/h | W · 20 km/h | SW · 21 km/h | W · 20 km/h |
| Humidity (%) | 80% | 70% | 69% | 67% | 67% | 64% | 72% | 72% | 70% | 69% | 71% | 75% |
| Day length | 9.5h | 10.6h | 12.0h | 13.4h | 14.6h | 15.2h | 14.9h | 13.8h | 12.5h | 11.1h | 9.8h | 9.2h |