National Weather Service Forecast for: Gulf Port IL
Issued by: National Weather Service Quad Cities, IA/IL
Updated: 5:41 am CDT Jun 30, 2026
 
Today

Today: Mostly sunny, with a high near 93. Heat index values as high as 105. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Mostly Sunny
then Sunny
and Breezy
 Tonight

Tonight: Mostly clear, with a low around 76. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Mostly Clear

 Wednesday

Wednesday: Sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.
Sunny

 Wednesday
Night
Wednesday Night: Mostly clear, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 25 mph.
Mostly Clear

 Thursday

Thursday: Mostly sunny, with a high near 93.
Mostly Sunny

 Thursday
Night
Thursday Night: Partly cloudy, with a low around 75.
Partly Cloudy

 Friday

Friday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 93.
Chance
T-storms
 Friday
Night
Friday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Chance
T-storms
 Independence
Day
Independence Day: A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Chance
T-storms
Hi 93 °F Lo 76 °F Hi 93 °F Lo 77 °F Hi 93 °F Lo 75 °F Hi 93 °F Lo 73 °F Hi 92 °F

Hazardous Weather Outlook
Extreme Heat Warning
 

Today
 
 Mostly sunny, with a high near 93. Heat index values as high as 105. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tonight
 
 Mostly clear, with a low around 76. Southwest wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday
 
 Sunny, with a high near 93. Heat index values as high as 101. South wind 10 to 15 mph, with gusts as high as 25 mph.
Wednesday Night
 
 Mostly clear, with a low around 77. Southwest wind 5 to 10 mph, with gusts as high as 25 mph.
Thursday
 
 Mostly sunny, with a high near 93.
Thursday Night
 
 Partly cloudy, with a low around 75.
Friday
 
 A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 93.
Friday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 73.
Independence Day
 
 A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Saturday Night
 
 A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 72.
Sunday
 
 A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Sunday Night
 
 Partly cloudy, with a low around 69.
Monday
 
 Mostly sunny, with a high near 88.

 

Forecast from NOAA-NWS for Gulf Port IL.