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Isle Royale weather by month
Check out Isle Royale weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Isle Royale (°C)
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Max temperature (daytime) | -8 |
-6 |
0 |
8 |
15 |
20 |
24 |
22 |
17 |
11 |
2 |
-5 |
Min temperature (night-time) | -18 |
-17 |
-11 |
-3 |
3 |
8 |
12 |
11 |
7 |
2 |
-5 |
-14 |
Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Sea temperature | 2 |
2 |
2 |
2 |
3 |
3 |
6 |
13 |
12 |
8 |
5 |
4 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & Daylight in Isle Royale
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Daily hours of sunshine | ||||||||||||
Daily hours of daylight | 9 |
10 |
12 |
14 |
15 |
16 |
16 |
14 |
13 |
11 |
9 |
8 |
UV Index (Maximum) | 1 |
1 |
3 |
4 |
6 |
7 |
7 |
6 |
5 |
2 |
1 |
1 |
Rainfall in Isle Royale
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Number of days with some rain | 10 |
8 |
9 |
8 |
10 |
13 |
11 |
12 |
13 |
11 |
9 |
11 |
Average monthly rainfall (mm) | 63 |
38 |
48 |
44 |
68 |
81 |
77 |
84 |
86 |
69 |
59 |
59 |
More about Isle Royale
Isle Royale by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Michigan
The climate guide for Michigan (Isle Royale) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
What's the climate like in Isle Royale?
Isle Royale has a cold climate with warm summers and some rainfall in all months.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
Compare Isle Royale with the USA
Below the Isle Royale chart shows average maximum daytime temperature for Isle Royale, Michigan, USA and the USA (Washington).
Maximum daytime temperature (°C)
Metric (°C / mm) | Imperial (°F / inches)
Compare more Isle Royale weather >>
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