Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Rockville is from May, June, October. — consistent weather climate
🌦Humid
| Score | 13 | 19 | 33 | 71 | 75 | 74 | 51 | 66 | 73 | 83 | 47 | 18 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Mild | Humid | Humid | Hot & rainy | Humid | Humid | Mild | Cold | Cold |
| Temperature | -2–6°C | -1–8°C | 2–12°C | 7–18°C | 13–23°C | 18–28°C | 21–31°C | 20–29°C | 17–26°C | 11–20°C | 4–13°C | 1–9°C |
| Feels like | -7–2°C | -5–5°C | -2–9°C | 4–17°C | 12–23°C | 18–30°C | 23–34°C | 22–32°C | 17–27°C | 9–19°C | 1–10°C | -3–5°C |
| Precipitation | 85mm 9 days | 84mm 9 days | 95mm 9 days | 98mm 9 days | 121mm 12 days | 127mm 10 days | 174mm 11 days | 142mm 11 days | 136mm 11 days | 83mm 8 days | 72mm 6 days | 102mm 9 days |
| Sunshine | 6.0h ☀︎ 61% | 6.6h ☀︎ 62% | 7.9h ☀︎ 66% | 9.0h ☀︎ 68% | 9.0h ☀︎ 63% | 11.3h ☀︎ 76% | 11.5h ☀︎ 79% | 10.7h ☀︎ 78% | 8.7h ☀︎ 70% | 7.9h ☀︎ 71% | 7.5h ☀︎ 75% | 5.8h ☀︎ 61% |
| Wind | W · 19 km/h | W · 19 km/h | NW · 19 km/h | W · 19 km/h | SW · 16 km/h | SW · 16 km/h | SW · 13 km/h | SW · 13 km/h | NE · 14 km/h | W · 16 km/h | W · 17 km/h | W · 17 km/h |
| Humidity (%) | 68% | 67% | 65% | 65% | 71% | 68% | 72% | 74% | 74% | 73% | 69% | 72% |
| Day length | 9.8h | 10.8h | 12.0h | 13.3h | 14.3h | 14.9h | 14.6h | 13.6h | 12.4h | 11.2h | 10.0h | 9.5h |