Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in National Harbor is from May, June, October. — consistent weather climate
🌦Humid
| Score | 19 | 23 | 48 | 75 | 77 | 77 | 46 | 58 | 74 | 82 | 58 | 24 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Cool & rainy | Humid | Humid | Hot & rainy | Rainy | Humid | Mild | Cold | Cold |
| Temperature | 0–8°C | 1–10°C | 4–15°C | 8–19°C | 13–23°C | 19–29°C | 22–32°C | 21–30°C | 17–26°C | 11–21°C | 6–15°C | 1–10°C |
| Feels like | -4–4°C | -3–7°C | 1–12°C | 6–18°C | 12–23°C | 19–31°C | 25–35°C | 23–33°C | 18–27°C | 10–20°C | 3–12°C | -2–7°C |
| Precipitation | 90mm 8 days | 89mm 10 days | 103mm 8 days | 109mm 9 days | 105mm 10 days | 112mm 8 days | 130mm 10 days | 184mm 13 days | 127mm 11 days | 89mm 8 days | 85mm 5 days | 110mm 8 days |
| Sunshine | 5.9h ☀︎ 60% | 6.6h ☀︎ 61% | 7.9h ☀︎ 66% | 9.2h ☀︎ 70% | 9.4h ☀︎ 66% | 11.7h ☀︎ 79% | 12.0h ☀︎ 82% | 10.5h ☀︎ 77% | 9.0h ☀︎ 72% | 8.2h ☀︎ 74% | 7.9h ☀︎ 78% | 6.2h ☀︎ 65% |
| Wind | W · 19 km/h | W · 19 km/h | W · 20 km/h | W · 20 km/h | W · 17 km/h | SW · 16 km/h | SW · 14 km/h | SW · 13 km/h | N · 15 km/h | W · 16 km/h | W · 17 km/h | W · 17 km/h |
| Humidity (%) | 70% | 67% | 64% | 63% | 69% | 67% | 72% | 76% | 74% | 73% | 69% | 71% |
| Day length | 9.8h | 10.8h | 12.0h | 13.2h | 14.3h | 14.8h | 14.6h | 13.6h | 12.4h | 11.2h | 10.1h | 9.5h |