Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Decorah is from July, August, September. — consistent weather climate
🌦Humid
| Score | 12 | 20 | 20 | 41 | 77 | 78 | 82 | 79 | 86 | 63 | 26 | 13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Polar | Cold | Cold | Cool & rainy | Humid | Humid | Humid | Pleasant | Cold | Cold | Polar |
| Temperature | -10–-2°C | -10–0°C | -1–9°C | 3–14°C | 10–21°C | 16–27°C | 18–28°C | 17–27°C | 14–24°C | 7–16°C | 0–8°C | -6–2°C |
| Feels like | -15–-7°C | -15–-4°C | -6–5°C | -1–10°C | 8–20°C | 16–28°C | 19–30°C | 18–29°C | 13–23°C | 4–13°C | -4–4°C | -11–-3°C |
| Precipitation | 38mm 9 days | 25mm 4 days | 77mm 9 days | 73mm 9 days | 107mm 10 days | 114mm 9 days | 106mm 6 days | 121mm 7 days | 77mm 6 days | 65mm 6 days | 64mm 6 days | 39mm 7 days |
| Sunshine | 4.3h ☀︎ 46% | 7.8h ☀︎ 74% | 7.1h ☀︎ 60% | 8.3h ☀︎ 62% | 9.9h ☀︎ 68% | 12.0h ☀︎ 78% | 12.4h ☀︎ 83% | 11.5h ☀︎ 83% | 10.1h ☀︎ 81% | 8.0h ☀︎ 72% | 6.5h ☀︎ 67% | 4.2h ☀︎ 47% |
| Wind | W · 17 km/h | W · 19 km/h | NW · 20 km/h | W · 23 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 · 19 km/h |
| Humidity (%) | 79% | 71% | 65% | 63% | 64% | 65% | 71% | 73% | 70% | 66% | 69% | 72% |
| Day length | 9.4h | 10.5h | 12.0h | 13.4h | 14.7h | 15.3h | 15.0h | 13.9h | 12.5h | 11.0h | 9.7h | 9.0h |