Get the app
Best time to visit · Minnesota, United States
For the most comfortable weather in Grand Marais, aim for June – September. August tops our comfort score at 83/100, with highs around 77°F (25°C) and 3.0 in (75 mm) of rain. May is a good shoulder-season month. The toughest months are November – January, mainly because of cool days.
Highs run from 19°F to 79°F across the year, and the yearly total is about 28.5 in (723 mm) of rain and snow.
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 19°F-7°C | 21°F-6°C | 35°F2°C | 49°F10°C | 62°F17°C | 72°F22°C | 79°F26°C | 77°F25°C | 68°F20°C | 52°F11°C | 38°F3°C | 24°F-4°C |
| Avg low | 3°F-16°C | 4°F-15°C | 18°F-8°C | 31°F-1°C | 42°F5°C | 52°F11°C | 59°F15°C | 58°F14°C | 50°F10°C | 37°F3°C | 25°F-4°C | 11°F-12°C |
| Rain/snow | 1.1 in27 mm | 0.9 in24 mm | 1.3 in33 mm | 2.4 in62 mm | 3.2 in82 mm | 3.9 in98 mm | 3.3 in84 mm | 3.0 in75 mm | 3.2 in81 mm | 3.0 in75 mm | 1.7 in44 mm | 1.5 in38 mm |
| Humidity | 98% | 96% | 86% | 74% | 73% | 75% | 73% | 73% | 76% | 81% | 85% | 94% |
| Cloud | 69% | 66% | 67% | 70% | 73% | 71% | 62% | 62% | 65% | 71% | 75% | 75% |
| Comfort | 47 | 48 | 48 | 59 | 76 | 79 | 82 | 83 | 83 | 61 | 45 | 45 |
Source: NASA POWER (public domain), 2001–2025 monthly averages on a ~50 km satellite and reanalysis grid, so coasts and valleys can differ from what's shown. Temperatures were adjusted from the grid cell's ~468 m (1,536 ft) to Grand Marais's ~186 m (610 ft) elevation using the standard lapse rate of 6.5°C per 1,000 m. Precipitation includes snow as melted water; daylight is calculated from latitude. Check a forecast before you go.
The cold peaks here: highs of 19–24°F (-7–-4°C), and nights reach 3°F (-16°C). It's the driest season, with only about 3.5 in (89 mm) of rain or snow, 12% of the year's total. December – February are cold enough for snow. It holds the toughest stretch on our comfort score (December & January), averaging 47/100.
Temperatures climb through the season, from 35°F highs in March to 62°F by May. About 7.0 in (177 mm) of rain or snow falls across these months, 24% of the year's total. March is cold enough for snow. May score well without being the very best (season average 61/100).
Peak warmth: highs of 72–79°F (22–26°C). It's the wettest season, with about 10.1 in (257 mm) of rain, 36% of the year's total. Lows bottom out around 52°F (11°C). June – August are among the best-scoring months (season average 81/100).
Temperatures slide from 68°F highs in September to 38°F by November. About 7.9 in (200 mm) of rain or snow falls across these months, 28% of the year's total. November is cold enough for snow. Comfort peaks here: September ranks with the year's best, and the season averages 63/100.
By comfort score: 5 Great, 1 Good and 6 Fair. Great months: May – September. Tap a month for its own guide.
For the most comfortable weather in Grand Marais, aim for June – September. August tops our comfort score at 83/100, with highs around 77°F (25°C) and 3.0 in (75 mm) of rain. May is a good shoulder-season month. The toughest months are November – January, mainly because of cool days.
June is the wettest month, averaging about 3.9 in (98 mm) of rain. February is the driest, with about 0.9 in (24 mm). The yearly total is around 28.5 in (723 mm).
January is the coldest, with average lows of 3°F (-16°C) and highs of 19°F (-7°C). The warmest is July, with average highs of 79°F (26°C).
Not very: summer (June – August) humidity averages 74%, and highs peak around 79°F (26°C), so it rarely feels sticky.
On average, yes: lows fall below 32°F (0°C) in November – April, bottoming out around 3°F (-16°C) in January.
Poll the group on June – September dates, then plan the days, packing and costs together.
