Weather in Seattle in joulukuu
Climate normals based on 10 years of historical data for Seattle, Amerikan Yhdysvallat.
Average high
7°C
Average low
3°C
Rainfall
202 mm
19 rainy days
Sunshine
1.4h/day
Kosteus
85%
How Hot Is Seattle in joulukuu?
The month-long average for Seattle in December is 5°C, ranging between 7°C highs and 3°C lows.
Sunshine Hours in joulukuu
December is dim in Seattle — sunrise doesn't come until 7:50 am and the sun sets early at 4:20 pm, leaving only about 1.4h of direct sun on a typical day.
Does It Rain In Seattle In joulukuu?
Seattle is saturated: 202mm of rain in 19 days, the wettest stretch of the year.
Is Seattle Humid In joulukuu?
Tropical-style humidity defines Seattle's December: 85% on average, with constant mugginess.
Does It Snow In Seattle In joulukuu?
Seattle sees occasional snow in December: roughly 1.0 snow days a month.
Wind In Seattle In joulukuu
December brings gentle winds to Seattle — averaging 16 kph.
Cloud Cover In Seattle In joulukuu
Seattle's December runs cloudy: typical cloud cover of 74%.
Cities With Similar Weather In joulukuu
Weather in Seattle, month by month
| Month | High / Low | Sade | |
|---|---|---|---|
| Sää tammikuussa | 8°C / 3°C | 188mm | Details → |
| Sää helmikuussa | 8°C / 2°C | 124mm | Details → |
| Sää maaliskuussa | 11°C / 3°C | 109mm | Details → |
| Sää huhtikuussa | 14°C / 5°C | 87mm | Details → |
| Sää toukokuussa | 19°C / 9°C | 55mm | Details → |
| Sää kesäkuussa | 22°C / 11°C | 54mm | Details → |
| Sää heinäkuussa | 26°C / 14°C | 15mm | Details → |
| Sää elokuussa | 26°C / 15°C | 27mm | Details → |
| Sää syyskuussa | 21°C / 12°C | 67mm | Details → |
| Sää lokakuussa | 16°C / 8°C | 134mm | Details → |
| Sää marraskuussa | 10°C / 5°C | 192mm | Details → |
| Sää joulukuussa | 7°C / 3°C | 202mm |