Indiana Dunes National Park Weather Forecast
Indiana Dunes National Park weather: 59°F, overcast. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Indiana Dunes National Park is a national park in Indiana. Indiana Dunes National Park is a US national park known for Lake Michigan dunes and beaches.
Right now it is 59°F (15°C) in Indiana Dunes National Park with overcast. It feels like 57°F. Today runs from 55°F to 64°F. Chance of precipitation is 18%. Sightseeing conditions score 9/10 - excellent - go now.
The best time to visit Indiana Dunes National Park is May, July, August and September. The climate is continental. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 81°F, while January is the coldest with lows near 20°F.
The closest major airport is O'Hare International Airport (ORD), about 49 mi away. Nearby highlights include Starved Rock State Park and Lake Michigan.
In plain terms. Today is cooler than average for September. The forecast high of 64°F is 11.3°F below the 75°F typical for this month. The best window to be outside is roughly 2 PM to 5 PM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Indiana Dunes National Park today at 9.1/10. 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 Indiana Dunes National Park
Beach Hazards Statement issued September 20 at 9:43PM CDT until September 21 at 7:00AM CDT by NWS Chicago IL
Issued by NWS Chicago IL
Weather in Indiana Dunes National Park right now
Source: Open-Meteo. Updated 2:07 AM, Sep 21 local time.
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Indiana Dunes National Park
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Mon, Sep 21 | ☁️ Overcast | 64° / 55° | 18% | 11 mph | 1 |
| Tue, Sep 22 | ☁️ Overcast | 61° / 51° | 5% | 13 mph | 5 |
| Wed, Sep 23 | ☁️ Overcast | 60° / 56° | 2% | 15 mph | 1 |
| Thu, Sep 24 | ☁️ Overcast | 67° / 56° | 1% | 10 mph | 4 |
| Fri, Sep 25 | ☁️ Overcast | 68° / 51° | 1% | 8 mph | 5 |
| Sat, Sep 26 | ☁️ Overcast | 60° / 55° | 1% | 6 mph | 1 |
| Sun, Sep 27 | ☁️ Overcast | 70° / 51° | 5% | 7 mph | 5 |
| Mon, Sep 28 | ☀️ Clear sky | 72° / 51° | 7% | 7 mph | 5 |
| Tue, Sep 29 | 🌦️ Light drizzle | 72° / 54° | 22% · 0,0 in | 8 mph | 4 |
| Wed, Sep 30 | 🌦️ Light drizzle | 64° / 58° | 22% · 0,0 in | 16 mph | 5 |
| Thu, Oct 1 | ☁️ Overcast | 70° / 49° | 11% | 9 mph | 5 |
| Fri, Oct 2 | ☁️ Overcast | 68° / 56° | 16% | 12 mph | 3 |
| Sat, Oct 3 | ☁️ Overcast | 70° / 61° | 16% | 10 mph | 2 |
| Sun, Oct 4 | 🌦️ Light drizzle | 81° / 63° | 14% · 0,1 in | 18 mph | 5 |
| Mon, Oct 5 | 🌦️ Light drizzle | 73° / 61° | 19% · 0,0 in | 19 mph | 5 |
| Tue, Oct 6 | ☀️ Clear sky | -- / -- | 23% | -- | — |
Climate in Indiana Dunes 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 | 30° | 20° | 3,1 in | ★★☆☆☆ |
| February | 40° | 26° | 1,1 in | ★★★☆☆ |
| March | 53° | 34° | 4,6 in | ★★★☆☆ |
| April | 60° | 43° | 4,5 in | ★★★☆☆ |
| May | 67° | 51° | 2,8 in | ★★★★☆ |
| June | 78° | 63° | 5,4 in | ★★★★☆ |
| July | 81° | 67° | 4,3 in | ★★★★☆ |
| August | 78° | 65° | 3,9 in | ★★★★☆ |
| September | 75° | 60° | 2,4 in | ★★★★☆ |
| October | 64° | 50° | 3,7 in | ★★★★☆ |
| November | 50° | 39° | 3,3 in | ★★★☆☆ |
| December | 39° | 29° | 3,1 in | ★★☆☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Weather map for Indiana Dunes 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 Indiana Dunes 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 Indiana Dunes National Park
Go in May, 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 Indiana Dunes 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 Indiana Dunes National Park?
Indiana Dunes National Park is a national park in Indiana. Its coordinates are 41.6533, -87.0524. It lies in North America.
What is the weather like in Indiana Dunes National Park right now?
It is currently 59°F (15°C) with overcast. Humidity is 88% and wind is 10 mph.
When is the best time to visit Indiana Dunes National Park?
May, July, August and September offer the most comfortable conditions in Indiana Dunes National Park, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Indiana Dunes National Park in?
Indiana Dunes National Park observes America/Chicago (UTC-05:00). The local time is 2:07 AM.
What is the nearest airport to Indiana Dunes National Park?
The closest airports are O'Hare International Airport (ORD), 49 mi away.
What are the top things to do in Indiana Dunes National Park?
Popular options include Starved Rock State Park and Lake Michigan.
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 21, 2026 at 2:07 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
