Sammamish, WA
Climate overview — based on NOAA 1991-2020 normals from SNOQUALMIE FALLS, WA US.
Year-round temperatures (°F)
Climate summary
Sammamish has an annual average temperature of 51.7°F with about 63.3 inches of precipitation per year and 3.6 inches of snow. The warmest month is August (average high 76.7°F), and the coldest is February (average low 35.3°F). November is typically the wettest month (9.47 in) and August the driest (1.22 in). Snow typically falls from December through March.
Best time to visit Sammamish
Full guide →Climate change signal
All-time records →0 of 366 (0%) of Sammamish's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.
| 1890s | 3 | |
| 1900s | 69 | |
| 1910s | 33 | |
| 1920s | 32 | |
| 1930s | 30 | |
| 1940s | 34 | |
| 1950s | 22 | |
| 1960s | 29 | |
| 1970s | 24 | |
| 1980s | 37 | |
| 1990s | 23 | |
| 2000s | 30 | |
| 2010s | 0 | |
| 2020s | 0 |
Bars: number of all-time daily heat records still standing that were set in each decade.
Monthly averages
| Month | Avg High | Avg Low | Avg Temp | Precipitation | Snow | Rainy days |
|---|---|---|---|---|---|---|
| January | 46.4°F | 35.8°F | 41.1°F | 8.64 in | 1.5 in | 21 |
| February | 49.6°F | 35.3°F | 42.4°F | 5.83 in | 0.2 in | 16 |
| March | 53.7°F | 37.2°F | 45.4°F | 6.74 in | 0.3 in | 20 |
| April | 58.9°F | 40.1°F | 49.5°F | 5.29 in | — | 18 |
| May | 64.1°F | 46.1°F | 55.1°F | 4.04 in | — | 15 |
| June | 69.0°F | 50.6°F | 59.8°F | 3.15 in | — | 13 |
| July | 75.8°F | 54.0°F | 64.9°F | 1.24 in | — | 7 |
| August | 76.7°F | 53.7°F | 65.2°F | 1.22 in | — | 6 |
| September | 70.4°F | 49.1°F | 59.7°F | 3.02 in | — | 11 |
| October | 59.5°F | 43.5°F | 51.5°F | 6.22 in | — | 17 |
| November | 51.1°F | 38.3°F | 44.7°F | 9.47 in | 0.1 in | 21 |
| December | 45.8°F | 35.7°F | 40.7°F | 8.42 in | 1.5 in | 20 |
Climate twins of Sammamish
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).