
Rainbow Lake Wilderness
- Annual mean
- 5 °C
- Warmest month
- July
- Wettest month
- June
Long-term climatology profiles based on monthly averages from 1991 to 2020 at a representative coordinate.
The climate profile for Porcupine Lake Wilderness in Bayfield County illustrates the annual rhythm of the regional atmosphere through monthly averages. These metrics span 1991 to 2020 and include average maximum, mean, and minimum temperatures, alongside daily precipitation rates, relative humidity, wind speed, and daylight duration. The records rely on measurements from a single representative point within the wilderness area, providing a consistent reference for the local climate throughout the twelve-month cycle.
Analyzing twelve months of average thermal ranges and daily precipitation rates across the protected area
Compare average temperature bounds, daily precipitation rates, humidity, wind, and daylight across the annual calendar cycle
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | -11.4 °C-25.9° to 1° | 0.9 mm/day | 95.2% | 4.3 m/s | 8.9 hours |
| February | -9.3 °C-24.7° to 2.9° | 1 mm/day | 92.5% | 4.4 m/s | 10.1 hours |
| March | -2.6 °C-18.7° to 12.7° | 1.5 mm/day | 84.1% | 4 m/s | 11.7 hours |
| April | 4.2 °C-7.4° to 21.1° | 2.6 mm/day | 75.7% | 3.7 m/s | 13.4 hours |
| May | 11 °C-1.5° to 25.8° | 3.1 mm/day | 75.5% | 3.2 m/s | 14.8 hours |
| June | 16.3 °C4.1° to 28.6° | 3.6 mm/day | 78.4% | 2.9 m/s | 15.5 hours |
| July | 19.6 °C8.9° to 30.3° | 3.5 mm/day | 76.5% | 2.8 m/s | 15.2 hours |
| August | 19 °C8.7° to 29.8° | 3.1 mm/day | 75.3% | 2.9 m/s | 13.9 hours |
| September | 14.6 °C2.2° to 28° | 3 mm/day | 75.3% | 3.3 m/s | 12.3 hours |
| October | 6.9 °C-3.7° to 22.3° | 2.7 mm/day | 78.4% | 3.6 m/s | 10.6 hours |
| November | -0.9 °C-12.8° to 11.7° | 1.7 mm/day | 84.3% | 3.8 m/s | 9.2 hours |
| December | -7.7 °C-21.9° to 3.3° | 1.3 mm/day | 92.4% | 3.9 m/s | 8.5 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.
Comparing long-term monthly normals for temperature, precipitation, wind, humidity, and daylight duration.
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Expand one wilderness baseline into cross-landscape monthly comparison






Access structured data and mapped insights for this northern Wisconsin wilderness reserve. Through MoriAtlas, trace the glacial topography and forest networks that define the protected landscape of Porcupine Lake Wilderness and its surrounding Bayfield County geography.