Washington weather in January
January in Washington: cold, rainy, with clean air — a fair time to visit.
#12 of 12 months in Washington · #421 of 604 destinations to visit in January · comfort 59/100 (tier D)
Updated June 2026 · climate normals from ERA5 reanalysis
Washington climate normals — January
| Daytime high | 7°C / 45°F | 🧥 cold |
|---|---|---|
| Nighttime low | -1°C / 31°F | |
| Feels like (high) | 4°C / 39°F | |
| Rainfall | 82 mm / 3.2 in | 🌧 rainy |
| Rainy days | 11 days | |
| Humidity | 68% | 💧 humid |
| Dew point | -3°C / 27°F | |
| Sunshine | 6.1 h/day | |
| Daylight | 9.8 h | |
| Wind | 17 km/h / 11 mph | |
| Snowfall | 13 cm / 5.1 in | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Washington in January — FAQ
- Is January a good time to visit Washington?
- January in Washington: cold, rainy, with clean air — a fair time to visit. It ranks #12 of 12 months for Washington on SeasonMap's comfort score (59/100).
- What is the weather like in Washington in January?
- In January, Washington averages a daily high of 7.2°C and a low of -0.6°C, with about 82.2 mm of rain over roughly 10.6 rainy days.
- What is the air quality in Washington in January?
- Washington has a mean US Air Quality Index of about 39 in January.
- Does it snow in Washington in January?
- Washington sees roughly 13 cm of snowfall in January.