
Indian Heaven Wilderness
- Annual mean
- 6.6 °C
- Warmest month
- August
- Wettest month
- December
Detailed seasonal shifts in temperature, precipitation, and atmospheric patterns.
Review established climate patterns at a representative coordinate within Gifford Pinchot National Forest. This dataset provides monthly averages for temperature, daily precipitation, relative humidity, wind speed, and daylight hours derived from NASA POWER measurements covering the 1991 to 2020 period. These records establish long-term baseline atmospheric conditions rather than current weather or forecasts for the entire landscape.

Evaluating average monthly temperature ranges alongside daily precipitation rates across the annual cycle
Compare average temperature bounds, daily precipitation rates, humidity, wind, and calculated daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -1.1 °C-11.8° to 7° | 9.5 mm/day | 95.3% | 2.4 m/s | 8.9 hours |
| February | -0.3 °C-10.7° to 7.9° | 7.6 mm/day | 92.4% | 2.3 m/s | 10.1 hours |
| March | 2 °C-7.1° to 13.9° | 7 mm/day | 89.4% | 2.1 m/s | 11.7 hours |
| April | 5 °C-3.9° to 18.9° | 5.3 mm/day | 84.5% | 2 m/s | 13.3 hours |
| May | 9.2 °C-0.8° to 24.1° | 3.3 mm/day | 81.3% | 2 m/s | 14.8 hours |
| June | 11.8 °C2.5° to 27.6° | 2.4 mm/day | 81.1% | 2 m/s | 15.5 hours |
| July | 15.6 °C5.2° to 31.6° | 0.7 mm/day | 76% | 1.8 m/s | 15.2 hours |
| August | 16.1 °C5.5° to 31.5° | 0.9 mm/day | 70.2% | 1.8 m/s | 13.9 hours |
| September | 13.2 °C2.4° to 29.6° | 2.4 mm/day | 69.5% | 1.9 m/s | 12.3 hours |
| October | 7.2 °C-2.9° to 21.4° | 5.9 mm/day | 81.2% | 2 m/s | 10.6 hours |
| November | 2.1 °C-8.2° to 12° | 10 mm/day | 91.5% | 2.2 m/s | 9.2 hours |
| December | -1.3 °C-11.9° to 7° | 10.4 mm/day | 95.1% | 2.4 m/s | 8.5 hours |
Comparing long-term averages 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.
Explore long-term monthly climate normals across diverse protected landscapes and geographic settings.




Deepen your understanding of Gifford Pinchot National Forest by examining its unique volcanic terrain, wilderness areas, and river networks within the Washington Cascade Range. Through the MoriAtlas mapping platform, gain insight into the structural composition and geographic significance of this vast protected landscape and its regional context.