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Seattle, WA Climate

Climate in Seattle

The typical year in Seattle (Washington), from 1991-2020 normals. For what's happening now, see the current forecast; a month ahead — the 30-day outlook.

Annual mean temp
12°C
average across 12 months
Annual precipitation
1126 mm
yearly total
Warmest month
Jul
⌀ max 25°C
Coldest month
Feb
⌀ min 2°C

Temperatures by month

typical high (orange) · typical low (blue)
Jan
38° … 47°
Feb
36° … 46°
Mar
39° … 52°
Apr
43° … 58°
May
49° … 65°
Jun
54° … 71°
Jul
58° … 78°
Aug
59° … 78°
Sep
56° … 71°
Oct
48° … 60°
Nov
42° … 51°
Dec
39° … 47°

Precipitation by month

monthly totals across the year
Jan
187 mm
Feb
107 mm
Mar
85 mm
Apr
86 mm
May
52 mm
Jun
48 mm
Jul
13 mm
Aug
29 mm
Sep
63 mm
Oct
106 mm
Nov
156 mm
Dec
194 mm

The short version

RegionWashington
RegionWashington
Latitude47.6062°N
Annual mean12°C
Annual precipitation1126 mm

Weather map — Seattle

Seattle →
Source · 1991-2020 normals
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Updated: 5:50 AM