National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Grissom Air Force Base / Peru (KGUS)

Lat: 40.65°NLon: 86.15°WElev: 810ft.

Fair

77°F

25°C

Humidity 72%
Wind Speed SW 20 G 28 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 May 9:55 am EDT
Extended Forecast for

4 Miles SW Galveston IN

  • Today

    Today: Scattered showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 83. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Breezy.
    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 2am, then a chance of showers after 2am. Low around 55. West southwest wind 9 to 14 mph becoming north northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers then
    Chance
    T-storms

  • Wednesday

    Wednesday: A 10 percent chance of showers before 8am. Mostly cloudy, with a high near 67. North wind around 11 mph.

    High: 67 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47. North wind 8 to 11 mph.

    Low: 47 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. East wind around 15 mph, with gusts as high as 21 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49. East northeast wind around 14 mph, with gusts as high as 21 mph.

    Low: 49 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 69. East wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 69 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 58. East wind 10 to 14 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.

    Low: 58 °F

    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. West wind around 9 mph. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers then
    Slight Chance
    T-storms

Detailed Forecast

Today
Scattered showers and thunderstorms between 3pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 83. Breezy, with a southwest wind 20 to 23 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before midnight, then a chance of showers and thunderstorms between midnight and 2am, then a chance of showers after 2am. Low around 55. West southwest wind 9 to 14 mph becoming north northwest after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 10 percent chance of showers before 8am. Mostly cloudy, with a high near 67. North wind around 11 mph.
Wednesday Night
Mostly cloudy, with a low around 47. North wind 8 to 11 mph.
Thursday
Mostly sunny, with a high near 66. East wind around 15 mph, with gusts as high as 21 mph.
Thursday Night
Mostly cloudy, with a low around 49. East northeast wind around 14 mph, with gusts as high as 21 mph.
Friday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 69. East wind around 14 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Friday Night
Showers and possibly a thunderstorm, mainly before 2am, then a chance of showers and thunderstorms after 2am. Low around 58. East wind 10 to 14 mph becoming south after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Saturday
A chance of showers and thunderstorms before 8am, then a slight chance of showers between 8am and 2pm, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 75. West wind around 9 mph. Chance of precipitation is 30%.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58. North northwest wind around 6 mph becoming east after midnight.
Sunday
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 78.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60.
Memorial Day
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Galveston IN
 40.54°N 86.24°W (Elev. 807 ft)
Last Update:
9:45 am EDT May 19, 2026
Forecast Valid:
10am EDT May 19, 2026-6pm EDT May 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation