Discover the best time of year, based on historical climate, temperature, and precipitation.
The best weather in Tri-Cities is from May, September, October. — consistent weather climate
☀️Pleasant
| Score | 12 | 31 | 54 | 80 | 94 | 90 | 50 | 64 | 98 | 91 | 25 | 11 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Climate | Cold | Cold | Cold | Mild | Pleasant | Pleasant | Hot & dry | Hot & dry | Pleasant | Mild | Cold | Cold |
| Temperature | -1–6°C | 0–9°C | 3–14°C | 6–19°C | 11–25°C | 16–31°C | 20–36°C | 19–34°C | 14–29°C | 8–20°C | 2–10°C | -1–5°C |
| Feels like | -5–2°C | -4–5°C | -1–11°C | 2–16°C | 9–22°C | 14–29°C | 19–35°C | 18–33°C | 13–27°C | 6–17°C | -1–7°C | -5–2°C |
| Precipitation | 36mm 9 days | 19mm 6 days | 19mm 5 days | 20mm 4 days | 19mm 3 days | 12mm 2 days | 1mm 0 days | 3mm 1 days | 8mm 2 days | 19mm 3 days | 53mm 8 days | 44mm 9 days |
| Sunshine | 3.3h ☀︎ 36% | 7.1h ☀︎ 69% | 9.4h ☀︎ 79% | 10.8h ☀︎ 80% | 12.2h ☀︎ 81% | 13.3h ☀︎ 85% | 14.3h ☀︎ 93% | 12.8h ☀︎ 91% | 10.8h ☀︎ 86% | 9.0h ☀︎ 83% | 4.9h ☀︎ 52% | 2.9h ☀︎ 33% |
| Wind | W · 15 km/h | W · 18 km/h | SW · 17 km/h | SW · 19 km/h | SW · 19 km/h | W · 19 km/h | W · 16 km/h | W · 16 km/h | W · 14 km/h | SW · 15 km/h | W · 16 km/h | W · 15 km/h |
| Humidity (%) | 80% | 69% | 58% | 43% | 40% | 35% | 28% | 34% | 45% | 61% | 77% | 82% |
| Day length | 9.1h | 10.4h | 12.0h | 13.6h | 15.0h | 15.7h | 15.3h | 14.1h | 12.5h | 10.9h | 9.4h | 8.7h |