Willamette National Forest
- Annual mean
- 6 °C
- Warmest month
- July
- Wettest month
- December
Detailed atmospheric patterns and annual cycles based on representative coordinate measurements.
Mount Washington Wilderness climate profile presents twelve-month averages for temperature, precipitation, humidity, wind, and daylight hours derived from 1991 to 2020 NASA POWER data. These metrics capture the long-term annual rhythm at a single representative elevation of 1144.5 meters. Measurements provide a baseline for geographic climate comparison and do not reflect real-time weather, extreme events, or terrain-wide variations across the protected wilderness area.

Long term average monthly temperature ranges and daily precipitation rates for Oregon protected areas
Compare average temperature bounds, daily precipitation, wind speed, relative humidity, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -0.2 °C-11.3° to 10° | 5.5 mm/day | 91.1% | 2.6 m/s | 9.1 hours |
| February | 0.3 °C-10° to 12.2° | 4.4 mm/day | 88.4% | 2.5 m/s | 10.2 hours |
| March | 2.2 °C-7.4° to 15.8° | 4.3 mm/day | 85.6% | 2.4 m/s | 11.7 hours |
| April | 4.6 °C-4.8° to 20.3° | 3.6 mm/day | 82.1% | 2.3 m/s | 13.3 hours |
| May | 8.8 °C-1.9° to 24.6° | 2.7 mm/day | 78.8% | 2.1 m/s | 14.6 hours |
| June | 11.8 °C1.7° to 27.6° | 1.8 mm/day | 77.1% | 2.1 m/s | 15.3 hours |
| July | 16.2 °C4.8° to 31.1° | 0.5 mm/day | 69.8% | 1.8 m/s | 15 hours |
| August | 16.3 °C4.8° to 32.1° | 0.5 mm/day | 64.9% | 1.8 m/s | 13.8 hours |
| September | 13.2 °C1.4° to 30.6° | 1.3 mm/day | 65.1% | 2 m/s | 12.3 hours |
| October | 7.4 °C-3.7° to 24.3° | 3.2 mm/day | 75.7% | 2.2 m/s | 10.7 hours |
| November | 2.3 °C-8.2° to 15.9° | 5.7 mm/day | 87.5% | 2.5 m/s | 9.4 hours |
| December | -0.7 °C-11.5° to 8.6° | 6.3 mm/day | 91.5% | 2.6 m/s | 8.7 hours |
Comparative monthly normals for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Visit the MoriAtlas climate map to compare long-term monthly temperature and precipitation metrics across national parks. This visual interface helps you understand seasonal variations at specific protected area coordinates to deepen your knowledge of global park geography and environmental characteristics.
Analyze monthly temperature, precipitation, and daylight rhythms across diverse regional landscapes.




Trace the boundary lines, volcanic fields, and forest mosaics of Mount Washington Wilderness using our structured geographic datasets. Gain a deeper understanding of this Oregon protected area through detailed map perspectives and landscape analysis, providing a clear window into its unique place within the Cascade Range.