Climate averages 1991–2020
Seattle weather
in July.
A warm, fairly dry month: the 2nd warmest and the driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
July is a warm month in Seattle: daytime highs average 23.7°C and nights cool to about 13.6°C. By daytime temperature it is the 2nd warmest of the 12 months.
Expect about 25 mm of rain on roughly 5 days, which makes July a fairly dry month (the driest month of the year). Daylight, from sunrise to sunset, lasts about 15 h 34 min on an average July day.
The nearest other city in this atlas is Bellevue (10 km away). In July its highs average 23.7°C, about as warm as Seattle, with 25 mm of rain.
Among the 498 cities listed in the United States, Seattle ranks joint 487th of 498 for the warmest July highs and joint 153rd of 498 for the driest July (rainfall, lowest first). The mean July high of those 498 cities is 30.3°C; Seattle is 6.6°C cooler than that mean.
From July to August, average highs rise by 0.3°C to 24.0°C, and monthly rainfall rises from 25 mm to 33 mm.
The annual picture
July in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Seattle climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 7.2°C1.6°C | 1.6°C | 176 | 18.4 | 8.99 h |
| February | 8.6°C1.4°C | 1.4°C | 121 | 14.7 | 10.210 h |
| March | 10.8°C2.9°C | 2.9°C | 139 | 17.5 | 11.912 h |
| April | 13.4°C4.8°C | 4.8°C | 113 | 14.9 | 13.614 h |
| May | 17.1°C8.2°C | 8.2°C | 76 | 12.0 | 15.115 h |
| June | 19.7°C11.0°C | 11.0°C | 59 | 9.5 | 15.916 h |
| July, selected | 23.7°C13.6°C | 13.6°C | 25 | 5.0 | 15.616 h |
| August | 24.0°C13.9°C | 13.9°C | 33 | 4.8 | 14.314 h |
| September | 20.6°C11.3°C | 11.3°C | 67 | 8.4 | 12.613 h |
| October | 14.6°C7.4°C | 7.4°C | 134 | 14.1 | 10.911 h |
| November | 9.6°C4.0°C | 4.0°C | 194 | 18.0 | 9.49 h |
| December | 6.6°C1.6°C | 1.6°C | 178 | 17.7 | 8.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
July in nearby cities
- Bellevue in JulyUnited States · 10 kmHigh 23.7°C · Low 13.6°C · 25 mm rain
- Kirkland in JulyUnited States · 12 kmHigh 23.1°C · Low 13.2°C · 33 mm rain
- Renton in JulyUnited States · 16 kmHigh 24.1°C · Low 14.0°C · 25 mm rain
- Kent in JulyUnited States · 26 kmHigh 24.2°C · Low 14.1°C · 25 mm rain
- Federal Way in JulyUnited States · 32 kmHigh 23.4°C · Low 13.3°C · 21 mm rain
- Auburn in JulyUnited States · 34 kmHigh 23.8°C · Low 13.5°C · 21 mm rain
- Tacoma in JulyUnited States · 40 kmHigh 24.0°C · Low 13.8°C · 16 mm rain
- Everett in JulyUnited States · 43 kmHigh 22.7°C · Low 13.3°C · 38 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Seattle) is explained once on the Seattle year overview and on the Sources, method and limits page.
Bellevue, Kent and Renton lie in the same rainfall cell, so their rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.