Isle Royale National Park Weather Forecast
Isle Royale National Park weather: 51°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Isle Royale National Park is a national park in Michigan. Isle Royale National Park is a US national park known for remote island wilderness and wolves.
Right now it is 51°F (10°C) in Isle Royale National Park with clear. It feels like 44°F. Today runs from 50°F to 53°F. Chance of precipitation is 0%. Sightseeing conditions score 8.7/10 - excellent - go now.
The best time to visit Isle Royale National Park is July, August and September. The climate is subarctic. January, February and December tend to be the least comfortable months. August is the warmest month with average highs near 68°F, while January is the coldest with lows near 13°F.
Nearby highlights include Lake Superior, Porcupine Mountains Wilderness State Park, Tettegouche State Park and Voyageurs National Park.
In plain terms. Today is cooler than average for September. The forecast high of 53°F is 11.7°F below the 64°F typical for this month. The best window to be outside is roughly 8 AM to 11 AM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in Isle Royale National Park today at 10/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Active alerts for Isle Royale National Park
Derived from the forecast. No official alert feed is wired for this country yet.
Weather in Isle Royale National Park right now
Source: Open-Meteo. Updated 7:38 PM, Sep 22 local time.
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Isle Royale National Park
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Tue, Sep 22 | 🌤️ Mainly clear | 53° / 50° | 0% | 12 mph | 5 |
| Wed, Sep 23 | ☀️ Clear sky | 57° / 52° | 0% | 15 mph | 5 |
| Thu, Sep 24 | 🌦️ Light drizzle | 60° / 54° | 10% · 0,0 in | 14 mph | 2 |
| Fri, Sep 25 | ☁️ Overcast | 64° / 56° | 10% | 8 mph | 5 |
| Sat, Sep 26 | ☁️ Overcast | 63° / 56° | 15% | 13 mph | 5 |
| Sun, Sep 27 | 🌦️ Light drizzle | 60° / 57° | 23% · 0,0 in | 9 mph | 2 |
| Mon, Sep 28 | ☁️ Overcast | 62° / 55° | 18% | 13 mph | 4 |
| Tue, Sep 29 | ☁️ Overcast | 62° / 56° | 33% | 16 mph | 3 |
| Wed, Sep 30 | 🌦️ Light rain | 60° / 55° | 29% · 0,6 in | 20 mph | 1 |
| Thu, Oct 1 | 🌧️ Rain | 54° / 48° | 19% · 0,5 in | 32 mph | 1 |
| Fri, Oct 2 | 🌦️ Light drizzle | 53° / 46° | 17% · 0,0 in | 14 mph | 4 |
| Sat, Oct 3 | ☁️ Overcast | 55° / 49° | 26% | 23 mph | 4 |
| Sun, Oct 4 | 🌦️ Light drizzle | 51° / 46° | 19% · 0,0 in | 16 mph | 2 |
| Mon, Oct 5 | 🌦️ Drizzle | 46° / 44° | 23% · 0,2 in | 12 mph | 1 |
| Tue, Oct 6 | ☁️ Overcast | 48° / 45° | 17% | 6 mph | 1 |
| Wed, Oct 7 | ☀️ Clear sky | -- / -- | 10% | -- | — |
Climate in Isle Royale National Park month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 22° | 13° | 1,7 in | ★★☆☆☆ |
| February | 27° | 16° | 1,9 in | ★★☆☆☆ |
| March | 33° | 23° | 2,2 in | ★★☆☆☆ |
| April | 41° | 31° | 4,0 in | ★★☆☆☆ |
| May | 52° | 39° | 2,4 in | ★★★☆☆ |
| June | 60° | 47° | 3,7 in | ★★★★☆ |
| July | 68° | 57° | 2,4 in | ★★★★☆ |
| August | 68° | 60° | 1,9 in | ★★★★☆ |
| September | 64° | 57° | 1,9 in | ★★★★☆ |
| October | 53° | 47° | 3,5 in | ★★★☆☆ |
| November | 40° | 34° | 2,1 in | ★★★☆☆ |
| December | 31° | 22° | 2,4 in | ★★☆☆☆ |
Climate type: Subarctic. Source: Open-Meteo archive (ERA5).
Weather map for Isle Royale National Park
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Isle Royale National Park
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Isle Royale National Park
Go in July, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
Explore Isle Royale National Park
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Isle Royale National Park?
Isle Royale National Park is a national park in Michigan. Its coordinates are 48.0063, -88.554. It lies in North America.
What is the weather like in Isle Royale National Park right now?
It is currently 51°F (10°C) with clear. Humidity is 68% and wind is 9 mph.
When is the best time to visit Isle Royale National Park?
July, August and September offer the most comfortable conditions in Isle Royale National Park, which has a subarctic climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Isle Royale National Park in?
Isle Royale National Park observes America/Detroit (UTC-04:00). The local time is 7:38 PM.
What are the top things to do in Isle Royale National Park?
Popular options include Lake Superior, Porcupine Mountains Wilderness State Park, Tettegouche State Park and Voyageurs National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (national-parks) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated September 22, 2026 at 7:38 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
