Local Forecast

Grantsburg, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Grantsburg, IL.

No Active Alerts

Hour-by-Hour  Current Observation

Sunday 9:55 PM CDTSunday 9:55 PM

°F °C
Regional Observations →
78°F

Partly Cloudy

  • 86° / 71° High / Low
  • 78° Feels Like
  • 0% Chance of Rain

Wind

6 mph

SSE

UV Index

0

None

Humidity

78%

Dew 71°F

Sun

5:34 AM · 8:13 PM

Rise · Set

Source: MARION REGIONAL (KMWA). Slider scrubs the next 12 hours.

5-Day Outlook

Through Thursday

Local Radar →

Today

86° 71°

Chance of Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Today

A chance of showers and thunderstorms after 3pm. Partly sunny. High near 86, with temperatures falling to around 84 in the afternoon. Southeast wind around 8 mph. Chance of precipitation is 40%.

Night

A chance of showers and thunderstorms before 4am, then showers and thunderstorms likely. Mostly cloudy. Low around 71, with temperatures rising to around 73 overnight. South southeast wind around 5 mph. Chance of precipitation is 60%.

Monday

86° 71°

Thunderstorms

Overnight: Thunderstorms Likely

Detailed forecast

Monday

A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely between 7am and 9am, then a chance of showers and thunderstorms between 9am and 11am, then showers and thunderstorms likely between 11am and 1pm, then showers and thunderstorms between 1pm and 4pm, then showers and thunderstorms between 4pm and 5pm, then showers and thunderstorms likely. Partly sunny. High near 85, with temperatures falling to around 83 in the afternoon. South southwest wind 3 to 8 mph. Chance of precipitation is 80%.

Night

A chance of showers and thunderstorms before 10pm, then showers and thunderstorms likely between 10pm and midnight, then a chance of showers and thunderstorms between midnight and 1am, then showers and thunderstorms likely between 1am and 2am, then a chance of showers and thunderstorms between 2am and 5am, then showers and thunderstorms likely. Mostly cloudy. Low around 71, with temperatures rising to around 73 overnight. South wind 2 to 7 mph. Chance of precipitation is 70%.

Tuesday

89° 75°

Thunderstorms Likely

Overnight: Isolated T-storm

Detailed forecast

Tuesday

Showers and thunderstorms likely before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 5 to 9 mph. Chance of precipitation is 70%.

Night

A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 74. South southwest wind 3 to 7 mph. Chance of precipitation is 30%.

Wednesday

91° 75°

Mostly Sunny

Overnight: Clear

Detailed forecast

Wednesday

Sunny, with a high near 91. South southwest wind 3 to 10 mph, with gusts as high as 20 mph.

Night

Mostly clear, with a low around 74. South southwest wind 3 to 8 mph.

Thursday

91° 71°

Chance of Scattered Thunderstorms

Overnight: Chance of Scattered Thunderstorms

Detailed forecast

Thursday

A chance of showers and thunderstorms after 7am. Sunny, with a high near 91. South southwest wind 5 to 12 mph, with gusts as high as 22 mph.

Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 71. West southwest wind 2 to 9 mph.

Grantsburg, IL Weather Analysis Tools