Rock River Canyon Wilderness
- Annual mean
- 5.4 °C
- Warmest month
- August
- Wettest month
- October
Long term atmospheric averages for a representative coordinate in Alger County, Michigan
Analyze the long term climate record for Pictured Rocks National Lakeshore through twelve month averages covering temperature, precipitation, humidity, wind, and daylight. These climate normals provide a statistical summary of environmental conditions based on NASA POWER data from 1991 to 2020. This data reflects conditions at a single representative coordinate rather than localized park variations.

Monthly average temperatures and daily precipitation rates across twelve months for Alger County
Compare long-term averages for temperature bounds, daily precipitation, relative humidity, wind speed, and calculated daylight across the calendar year
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -7.3 °C-17.9° to 1.6° | 2.2 mm/day | 94.5% | 5.3 m/s | 8.8 hours |
| February | -7.1 °C-18.2° to 1.9° | 1.7 mm/day | 92.9% | 5.3 m/s | 10.1 hours |
| March | -3.1 °C-14.6° to 8.6° | 1.8 mm/day | 87.8% | 4.7 m/s | 11.7 hours |
| April | 2.8 °C-6.6° to 16.7° | 2.4 mm/day | 80.7% | 4.4 m/s | 13.4 hours |
| May | 8.4 °C-0.9° to 22.2° | 2.7 mm/day | 80.7% | 3.8 m/s | 14.8 hours |
| June | 13.1 °C2.9° to 25.1° | 2.9 mm/day | 83.3% | 3.2 m/s | 15.6 hours |
| July | 16.6 °C7.4° to 26.7° | 3.1 mm/day | 83.7% | 3.2 m/s | 15.2 hours |
| August | 17.4 °C9.4° to 27° | 2.4 mm/day | 82.6% | 3.3 m/s | 13.9 hours |
| September | 14.1 °C4.5° to 25.2° | 3.4 mm/day | 82.2% | 3.9 m/s | 12.3 hours |
| October | 7.7 °C-0.8° to 19.8° | 3.5 mm/day | 83% | 4.4 m/s | 10.6 hours |
| November | 1.4 °C-7.5° to 11.6° | 2.6 mm/day | 86.2% | 4.8 m/s | 9.1 hours |
| December | -3.9 °C-14.5° to 4.3° | 2.3 mm/day | 91.9% | 4.9 m/s | 8.4 hours |
Calculated monthly climate highlights derived from long term temperature, precipitation, humidity, wind, and daylight records
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 monthly climate normals and atmospheric patterns across diverse protected landscapes.




Explore the full geographic scope of Pictured Rocks National Lakeshore through the MoriAtlas collection. Investigate the mapping of sandstone cliff formations, inland wilderness, and lakefront terrain to understand the essential landscape identity of this Alger County protected area.