Seattle Weather in January
United States · 30-year monthly averages
⚠️ Challenging time to visit
January in Seattle is chilly, with average daytime highs around 9°C (48°F) and nighttime lows near 3°C (38°F). Expect roughly 147mm of precipitation spread over about 16 rainy days, and this is one of the wetter months.
Avg high
9°C
48°F
Avg low
3°C
38°F
Rainfall
147mm
rainy
Rainy days
16
days with ≥1mm
🎒 What to pack
- jacket or coat
- long-sleeve layers
- compact umbrella or rain jacket
January vs the rest of the year
FAQ
- How hot is Seattle in January?
- January in Seattle is chilly, with average daytime highs around 9°C (48°F) and nighttime lows near 3°C (38°F). Expect roughly 147mm of precipitation spread over about 16 rainy days, and this is one of the wetter months.
- Does it rain a lot in Seattle in January?
- Seattle sees around 147mm of precipitation in January on average — rainy by global standards.
- Is January a good time to visit Seattle?
- January is a challenging month to visit Seattle weather-wise — plan around the conditions.