Rainy days · Washington
How often does it rain in Seattle?
Seattle’s rain is less a downpour and more a months-long drizzle that refuses to commit.
Seattle gets measurable rain or snow on about 156 days a year, adding up to about 39 inches.
November usually brings Seattle about 18 wet days and 6.3 inches. The wettest month is usually January, with about 19 wet days, and the driest is July, with about 5 wet days. That makes Seattle number 13 of the 129 US cities we track, rainiest first.
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Rainy days, month by month
| Month | Wet days | Inches |
|---|---|---|
| January | 19 | 5.8 |
| February | 16 | 3.8 |
| March | 17 | 4.2 |
| April | 15 | 3.2 |
| May | 11 | 1.9 |
| June | 9 | 1.4 |
| July | 5 | 0.6 |
| August | 5 | 1.0 |
| September | 8 | 1.6 |
| October | 14 | 3.9 |
| November | 18 | 6.3 |
| December | 18 | 5.7 |
Cities with about as many rainy days
- Portland, Oregon: about 156 wet days a year
- Burlington, Vermont: about 157 wet days a year
- Cleveland, Ohio: about 158 wet days a year
Source: NOAA daily precipitation records for the Seattle-Tacoma area, 1991 to 2020 (at least 30 complete years behind every month), via the Applied Climate Information System. A wet day here means at least a hundredth of an inch of rain or melted snow.