
Mount Thielsen Wilderness
- Annual mean
- 5.5 °C
- Warmest month
- July
- Wettest month
- December
Representative annual climatology covering temperature, humidity, wind, and daylight cycles
Access the twelve-month climate profile for Umpqua National Forest, reflecting long-term atmospheric patterns between 1991 and 2020. Measurements derived from a single representative point include mean, minimum, and maximum temperatures; daily precipitation rates; relative humidity; wind speed; and daylight duration. These records provide a consistent look at the environmental rhythms governing this Oregon landscape through every month of the calendar year.

Long term monthly temperature ranges and average daily precipitation rates across the calendar year
Analyze average temperature bounds, daily precipitation rates, humidity, wind speed, and daylight hours across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 0.4 °C-10.1° to 10.3° | 5.1 mm/day | 90.4% | 2.3 m/s | 9.2 hours |
| February | 1 °C-9° to 12.5° | 4.1 mm/day | 88.5% | 2.2 m/s | 10.3 hours |
| March | 2.8 °C-7.8° to 16° | 3.9 mm/day | 85.9% | 2 m/s | 11.7 hours |
| April | 5 °C-5.1° to 20.4° | 3.2 mm/day | 82.5% | 2 m/s | 13.2 hours |
| May | 9.3 °C-2.4° to 24.8° | 2.2 mm/day | 79.2% | 1.9 m/s | 14.5 hours |
| June | 12.6 °C0.8° to 28.4° | 1.3 mm/day | 76.6% | 1.8 m/s | 15.2 hours |
| July | 17.5 °C4.8° to 32.7° | 0.4 mm/day | 67.3% | 1.8 m/s | 14.8 hours |
| August | 17.9 °C4.9° to 34.3° | 0.4 mm/day | 58.7% | 1.8 m/s | 13.7 hours |
| September | 14.8 °C1.3° to 32.3° | 1 mm/day | 56.8% | 1.9 m/s | 12.3 hours |
| October | 8.9 °C-3.3° to 26.4° | 2.5 mm/day | 67.8% | 2 m/s | 10.7 hours |
| November | 3.2 °C-8° to 17.9° | 5 mm/day | 84.5% | 2.1 m/s | 9.5 hours |
| December | -0.1 °C-11° to 9.8° | 6.2 mm/day | 90.2% | 2.3 m/s | 8.9 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Long-term monthly average comparisons for temperature, precipitation, humidity, wind, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore long term temperature, precipitation, and atmospheric normals across diverse regional landscapes.








Deepen your understanding of Umpqua National Forest through this MoriAtlas entry. Examine the precise geographic extent of this southern Oregon protected landscape, its unique volcanic features, and its vital role within the larger Cascade Range, providing a clear visual and structured map for regional exploration.