Updated October 2026
Keweenaw National Historical Park Weather by Month
Keweenaw National Historical Park is warmest in July, when the nearest NOAA climate station averages a high of 75°F and a low of 55°F, and coldest in February, with an average high of 25°F and an average low of 9°F.
These figures are NOAA's 1991–2020 climate normals, the 30-year average for each calendar month, from the nearest long-record weather station, 2.2 miles from the park's reference point. A single station cannot describe a whole park: temperatures elsewhere in Keweenaw National Historical Park can differ from these, particularly with elevation.
Warmest month
Jul
75°F avg high
Coldest month
Feb
9°F avg low
Longest days
Jun
15.7 h of daylight
Average weather at Keweenaw by month
| Month | Avg high | Avg low | Daylight |
|---|---|---|---|
| January | 22°F | 10°F | 8.7 h |
| February | 25°F | 9°F | 10.0 h |
| March | 34°F | 17°F | 11.6 h |
| April | 46°F | 29°F | 13.4 h |
| May | 61°F | 40°F | 14.9 h |
| June | 71°F | 49°F | 15.7 h |
| July | 75°F | 55°F | 15.4 h |
| August | 74°F | 54°F | 14.0 h |
| September | 66°F | 47°F | 12.3 h |
| October | 52°F | 37°F | 10.6 h |
| November | 38°F | 26°F | 9.1 h |
| December | 28°F | 16°F | 8.3 h |
NOAA 1991–2020 climate normals from station USW00014858, 2.2 miles from the park's reference point. Daylight is the monthly average, computed from the park's latitude. Each month links to how crowded Keweenaw is at that time of year.
Keweenaw weather by season
Winter: December to February
Average highs bottom out at 22°F in January, between 28°F in December and 25°F in February, with average lows between 9°F and 16°F. The average high stays at or below freezing in all three months. Daylight is at its shortest, about 8.3 hours in December.
Spring: March to May
Average highs climb from 34°F in March to 61°F in May, with average lows between 17°F and 40°F. The average low is at or below freezing in March and April. Daylight lengthens from about 11.6 hours in March to 14.9 in May.
Summer: June to August
Average highs peak at 75°F in July, between 71°F in June and 74°F in August, with average lows between 49°F and 55°F. Daylight is at its longest, about 15.7 hours in June.
Fall: September to November
Average highs fall from 66°F in September to 38°F in November, with average lows between 26°F and 47°F. The average low is at or below freezing in November. Daylight shortens from about 12.3 hours in September to 9.1 in November.
What the National Park Service says about the weather
Summer: Keweenaw summers are usually mild, with average highs in the 70s, but can reach into the 80s and 90s. Nighttime temperatures are typically cool, but can also dip into the 40s or stay in the 70s. Summer months are dry, with occasional rain or severe thunderstorms. Winter: Again influenced by Lake Superior, winter temperatures are mild with highs in the 20s. Cold spells can occur with subzero temperatures. Lake effect snow is common, and 300 inches of snow can fall in a season.
Weather description courtesy of the National Park Service — official park site.
Today's forecast for Keweenaw
Averages describe a typical month, not this week. For current conditions and the seven-day outlook, the National Weather Service issues a forecast for the park's reference point at 47.18°N, 88.52°W. It covers that one spot, so other elevations in the park can differ from it, as they do from the averages above.
National Weather Service forecast for Keweenaw National Historical Park →
Weather and crowds together
July, the warmest month, sees about 3.0× the visitors of the park's average month. August is the busiest month of the year and January the quietest. To see those crowds set against the weather for all twelve months, read the best time to visit Keweenaw National Historical Park. For hotels, cabins and rentals close to the park, see where to stay near Keweenaw.
Where to stay near Keweenaw
Picked a month for Keweenaw National Historical Park? Compare hotels, cabins and vacation rentals near the park with live availability and prices.
Top-rated places to stay near Keweenaw
Prices for Oct 16–18, 4 adults. Change dates on the map below.
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Frequently Asked Questions
July is the warmest month at Keweenaw National Historical Park, with an average high of 75°F and an average low of 55°F. That is the 1991–2020 average at the nearest long-record NOAA station, 2.2 miles from the park's reference point. Temperatures inside the park can differ, particularly with elevation.
February is the coldest month at Keweenaw National Historical Park, with an average low of 9°F and an average high of 25°F, based on NOAA 1991–2020 climate normals.
Daylight at Keweenaw National Historical Park runs from about 8.3 hours a day in December to about 15.7 hours in June, computed from the park's latitude.
Weather at nearby parks
Keep exploring
Sources: NOAA NCEI U.S. Climate Normals 1991–2020 (station USW00014858), daylight computed from latitude, weather description from the National Park Service, crowd levels from National Park Service Visitor Use Statistics (2016–2025). Updated 2026-10-11. Lodging results are provided by Stay22; WhenToVisitParks may earn a commission from bookings, at no extra cost to you.