Roslyn, WA
Climate overview — based on NOAA 1991-2020 normals from EASTON, WA US.
Year-round temperatures (°F)
Climate summary
Roslyn has an annual average temperature of 45.2°F with about 49.8 inches of precipitation per year. The warmest month is August (average high 76.1°F), and the coldest is January (average low 24.6°F). January is typically the wettest month (8.13 in) and July the driest (0.71 in).
Best time to visit Roslyn
Full guide →Climate change signal
All-time records →157 of 366 (42.9%) of Roslyn'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.
| 1900s | 0 | |
| 1910s | 0 | |
| 1930s | 42 | |
| 1950s | 0 | |
| 2000s | 120 | |
| 2010s | 96 | |
| 2020s | 108 |
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 | 35.5°F | 24.6°F | 30.0°F | 8.13 in | — | — |
| February | 40.1°F | 25.4°F | 32.8°F | 5.84 in | — | — |
| March | 46.0°F | 28.7°F | 37.3°F | 4.94 in | — | — |
| April | 52.5°F | 32.5°F | 42.5°F | 3.42 in | — | — |
| May | 61.0°F | 39.0°F | 50.0°F | 2.21 in | — | — |
| June | 66.9°F | 45.1°F | 56.0°F | 1.77 in | — | — |
| July | 75.5°F | 50.5°F | 63.0°F | 0.71 in | — | — |
| August | 76.1°F | 49.8°F | 63.0°F | 0.87 in | — | — |
| September | 69.0°F | 43.3°F | 56.2°F | 1.88 in | — | — |
| October | 56.0°F | 35.2°F | 45.6°F | 4.93 in | — | — |
| November | 42.5°F | 29.4°F | 35.9°F | 7.77 in | — | — |
| December | 35.2°F | 25.0°F | 30.1°F | 7.37 in | — | — |
Climate twins of Roslyn
Why these? →The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).