Local weather forecast

Weather in Grant Park, IL

Updated 2026-08-11 10:15 local time · ZIP codes 60940

Partly Cloudy
Now81°F

Partly Cloudy

High / Low86° / 70°
Rain chance81%
Wind10 mph
Weather alerts

Active alerts

2
Flood Advisory issued August 11 at 6:02AM CDT until August 11 at 8:00AM CDT by NWS Chicago IL

* WHAT...Flooding caused by excessive rainfall continues. * WHERE...Northern Jasper County in northwestern Indiana... Lake IN County in northwestern Indiana... Northeastern Newton County in northwestern Indiana... Southern Porter County in northwestern Indiana... * WHEN...Until 800 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - At 600 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Flooding impacts will continue. This mornings thunderstorms will exit the advisory area by 7 AM, but additional rain is expected later today which may redevelop flooding issues. - Some locations that will experience flooding include... Merrillville, Schererville, Hobart, Crown Point, Highland, Munster, Cedar Lake, Lowell, DeMotte, Hebron, Wheatfield, Griffith, Dyer, St. John, Lynwood, Lakes of the Four Seasons, Winfield, Roselawn and Kouts. - http://www.weather.gov/safety/flood

Safety instructions

A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Flood Advisory issued August 11 at 4:56AM CDT until August 11 at 8:00AM CDT by NWS Chicago IL

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northern Jasper County in northwestern Indiana... Lake IN County in northwestern Indiana... Northeastern Newton County in northwestern Indiana... Southern Porter County in northwestern Indiana... * WHEN...Until 800 AM CDT. * IMPACTS...Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - At 456 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Some locations that will experience flooding include... Merrillville, Schererville, Hobart, Crown Point, Highland, Munster, Cedar Lake, Lowell, DeMotte, Hebron, Wheatfield, Griffith, Dyer, St. John, Lynwood, Lakes of the Four Seasons, Winfield, Roselawn and Kouts. - http://www.weather.gov/safety/flood

Safety instructions

A Flood Advisory means minor flooding along waterways and other poor drainage areas is imminent or may already be occurring. Persons in the advisory area should use caution and avoid flood waters. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Hourly

Next hours

NowPartly Cloudy81°17% rain
11 AMPartly Cloudy85°14% rain
12 PMCloudy86°17% rain
1 PMHeavy rain at times70°88% rain
2 PMPatchy rain nearby74°79% rain
3 PMSunny76°12% rain
4 PMModerate rain at times82°62% rain
5 PMSunny81°9% rain
6 PMSunny80°10% rain
7 PMSunny78°11% rain
8 PMPatchy rain nearby75°24% rain
9 PMPatchy rain nearby75°27% rain
Forecast

3-day weather forecast

Today2026-08-11
Sunny
86° 70°Sunny
Rain 81%Gust 15 mph
Tomorrow2026-08-12
Partly Cloudy
79° 67°Partly Cloudy
Rain 86%Gust 17 mph
Thursday2026-08-13
Sunny
83° 65°Sunny
Rain 78%Gust 6 mph
Conditions

Weather details

Feels like89°F
Humidity90%
Pressure29.88 inHg
Visibility3 mi
Wind10 mph WSW
Wind gusts13 mph
Precipitation0.00 in
UV index2
Daylight

Sunrise, sunset and moon

Sunrise05:56 AM
Sunset07:55 PM
Moonrise03:55 AM
Moon phaseNew Moon
Practical guide

Weather insights for today

Take an umbrella

Rain chance reaches about 88% over the next 12 hours.

Choose light, breathable clothing

It feels like 89°F with winds near 10 mph.

Best window: 3 PM

76°F, 12% rain chance and 6 mph wind.

Use extra caution while driving

Visibility is around 3 mi; gusts may reach 30 mph.

Running conditions are less comfortable

Current temperature is 81°F, wind 10 mph, rain chance up to 88%.

Low UV protection needs

UV index is 2.

Grant Park weather today

Partly Cloudy and 81°F in Grant Park, IL. Today's high is 86°F with a 81% rain chance. Winds are around 10 mph with gusts near 13 mph. Relative humidity is 90%, pressure is 29.88 inHg, and visibility is about 3 miles.

Tonight and tomorrow in Grant Park

Sunrise is at 05:56 AM and sunset is at 07:55 PM. Tomorrow's forecast calls for Partly Cloudy with a high near 79°F and a low near 67°F. The maximum rain chance is 86%.

Nearby

Weather near Grant Park

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