Lake Chelan-Sawtooth Wilderness
- Annual mean
- 2.4 °C
- Warmest month
- August
- Wettest month
- November
Twelve month analysis of temperature, precipitation, and light patterns at a representative coordinate.
Explore annual climate rhythms through long term monthly averages for Lake Chelan National Recreation Area. This data provides a detailed look at temperature, precipitation, humidity, wind, and daylight duration based on a representative coordinate. All measurements represent stable 1991 to 2020 climatology benchmarks rather than current weather or predictive forecasts. These records offer a precise longitudinal perspective on the environmental conditions within this protected landscape in Chelan County.

Monthly average minimum, mean, and maximum temperatures alongside average daily precipitation rates
Analyze average temperature bounds, precipitation rates, humidity, wind speed, and daylight hours across the year
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -6.7 °C-21° to 1.2° | 4.6 mm/day | 96.1% | 1.8 m/s | 8.6 hours |
| February | -6.2 °C-19.4° to 1.4° | 3.5 mm/day | 96% | 1.8 m/s | 9.9 hours |
| March | -3.9 °C-16.2° to 3.1° | 3.3 mm/day | 95.7% | 1.7 m/s | 11.6 hours |
| April | -0.4 °C-11.7° to 10.8° | 2.2 mm/day | 88.7% | 1.6 m/s | 13.5 hours |
| May | 6.1 °C-4.9° to 20.5° | 2 mm/day | 77% | 1.7 m/s | 15 hours |
| June | 9.7 °C-1° to 23.7° | 1.8 mm/day | 75.1% | 1.7 m/s | 15.8 hours |
| July | 13.5 °C2° to 26.8° | 1 mm/day | 71.9% | 1.6 m/s | 15.4 hours |
| August | 13.6 °C2.4° to 27.3° | 0.9 mm/day | 68.7% | 1.6 m/s | 14.1 hours |
| September | 9.9 °C-2° to 24.9° | 1.4 mm/day | 69.3% | 1.6 m/s | 12.3 hours |
| October | 3.2 °C-7.4° to 18.1° | 3.2 mm/day | 79.9% | 1.6 m/s | 10.5 hours |
| November | -3 °C-15.7° to 6.7° | 5.1 mm/day | 91.7% | 1.7 m/s | 9 hours |
| December | -7.3 °C-21° to 1.1° | 4.8 mm/day | 96.7% | 1.8 m/s | 8.2 hours |
Comparing long-term averages for temperature, precipitation, wind, humidity, 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 weather patterns and long term normals across different geographic settings






Dive into the detailed mapping and terrain data of Lake Chelan National Recreation Area. Use MoriAtlas to trace the boundaries, study the glacial landscape of the Stehekin Valley, and understand the unique geographic setting of this North Cascades protected area.