Isle Royale National Park Temperatures
Jan
| High: | 18 F° | (-8 C°) |
| Low: | -3 F° | (-19.7 C°) |
Feb
| High: | 24 F° | (-4.7 C°) |
| Low: | 1 F° | (-17.5 C°) |
March
| High: | 33 F° | (0.7 C°) |
| Low: | 11 F° | (-11.9 C°) |
April
| High: | 48 F° | (9 C°) |
| Low: | 25 F° | (-3.7 C°) |
May
| High: | 61 F° | (16.3 C°) |
| Low: | 37 F° | (2.5 C°) |
June
| High: | 70 F° | (21.2 C°) |
| Low: | 46 F° | (7.7 C°) |
July
| High: | 76 F° | (24.2 C°) |
| Low: | 52 F° | (11.2 C°) |
August
| High: | 74 F° | (23.2 C°) |
| Low: | 51 F° | (10.7 C°) |
Sept
| High: | 64 F° | (18 C°) |
| Low: | 44 F° | (6.5 C°) |
Oct
| High: | 50 F° | (9.9 C°) |
| Low: | 33 F° | (0.3 C°) |
Nov
| High: | 36 F° | (2.1 C°) |
| Low: | 21 F° | (-6.2 C°) |
Dec
| High: | 23 F° | (-4.8 C°) |
| Low: | 6 F° | (-14.7 C°) |