Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Groton is from May, June, August. — consistent weather climate
☀️Pleasant
| Score | 11 | 13 | 17 | 39 | 83 | 81 | 71 | 78 | 77 | 65 | 35 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Polar | Cold | Cold | Cold | Mild | Pleasant | Humid | Humid | Humid | Cool & rainy | Cold | Cold |
| Temperature | -5–3°C | -5–5°C | -1–9°C | 4–14°C | 10–21°C | 15–27°C | 19–29°C | 18–28°C | 14–23°C | 9–18°C | 2–11°C | -2–6°C |
| Feels like | -10–-1°C | -10–0°C | -6–6°C | 0–11°C | 7–20°C | 15–27°C | 20–31°C | 19–29°C | 13–23°C | 6–16°C | -1–8°C | -7–2°C |
| Precipitation | 107mm 11 days | 76mm 10 days | 113mm 10 days | 108mm 11 days | 81mm 8 days | 80mm 9 days | 134mm 12 days | 104mm 9 days | 122mm 9 days | 127mm 10 days | 69mm 7 days | 123mm 10 days |
| Sunshine | 5.3h ☀︎ 56% | 6.7h ☀︎ 63% | 8.1h ☀︎ 68% | 7.7h ☀︎ 58% | 10.5h ☀︎ 72% | 10.9h ☀︎ 71% | 10.8h ☀︎ 72% | 10.3h ☀︎ 74% | 8.7h ☀︎ 70% | 7.6h ☀︎ 69% | 7.1h ☀︎ 73% | 5.5h ☀︎ 60% |
| Wind | NW · 17 km/h | W · 18 km/h | W · 19 km/h | NW · 19 km/h | W · 17 km/h | SW · 16 km/h | W · 15 km/h | W · 15 km/h | W · 15 km/h | W · 15 km/h | W · 18 km/h | W · 17 km/h |
| Humidity (%) | 68% | 67% | 65% | 66% | 64% | 66% | 72% | 72% | 76% | 76% | 68% | 71% |
| Day length | 9.5h | 10.6h | 12.0h | 13.4h | 14.6h | 15.3h | 14.9h | 13.9h | 12.5h | 11.0h | 9.8h | 9.1h |