Current conditions at
Grissom Air Force Base / Peru (KGUS)
Lat: 40.65°NLon: 86.15°WElev: 810ft.
A Few Clouds
80°F
27°C
| Humidity | 66% |
| Wind Speed | SW 6 mph |
| Barometer | 29.94 in (1013.5 mb) |
| Dewpoint | 67°F (19°C) |
| Visibility | 10.00 mi |
| Heat Index | 82°F (28°C) |
| Last update | 26 Jul 12:55 pm EDT |
Extended Forecast for
Peru IN
This Afternoon
High: 87 °F
Mostly Sunny
Tonight
Low: 70 °F
Partly Cloudy
then Chance
ShowersMonday
High: 90 °F
Chance
Showers then
Severe
ThunderstormsMonday Night
Low: 71 °F
Severe
ThunderstormsTuesday
High: 84 °F
Mostly Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 82 °F
Sunny
Wednesday Night
Low: 58 °F
Mostly Clear
Thursday
High: 84 °F
Sunny
Detailed Forecast
This Afternoon
Mostly sunny, with a high near 87. Heat index values as high as 95. West wind around 5 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between 3am and 5am. Partly cloudy, with a low around 70. Calm wind.
Monday
A chance of showers and thunderstorms before 11am, then a slight chance of showers between 11am and 2pm, then a chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Partly sunny and hot, with a high near 90. Heat index values as high as 103. Northwest wind 5 to 10 mph becoming southwest in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Some of the storms could be severe. Partly cloudy, with a low around 71. Southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 84. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Sunny, with a high near 82.
Wednesday Night
Mostly clear, with a low around 58.
Thursday
Sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 61.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 84.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84.
Additional Forecasts and Information
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Point Forecast:
Peru IN
40.76°N 86.07°W (Elev. 656 ft)
40.76°N 86.07°W (Elev. 656 ft)
12:30 pm EDT Jul 26, 2026
2pm EDT Jul 26, 2026-6pm EDT Aug 1, 2026
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