Weather forecast for: Keystone IN
Last Update: 6:01 am EDT Sep 4, 2026
Today: Mostly sunny and hot, with a high near 90. Heat index values as high as 101. West wind around 5 mph.
Tonight: A 30 percent chance of showers and thunderstorms, mainly after 5am. Partly cloudy, with a low around 71. Calm wind becoming west around 5 mph.
Saturday: A 30 percent chance of showers and thunderstorms, mainly before 7am. Mostly sunny, with a high near 85. Calm wind becoming north around 5 mph in the afternoon.
Saturday Night: Partly cloudy, with a low around 63. Northeast wind around 5 mph.
Sunday: Sunny, with a high near 80. Northeast wind 5 to 10 mph.
Sunday Night: Mostly clear, with a low around 57.
Labor Day: Sunny, with a high near 80.
Monday Night: Partly cloudy, with a low around 61.
Tuesday: Mostly sunny, with a high near 83.
Tuesday Night: Partly cloudy, with a low around 69.
Wednesday: Mostly sunny, with a high near 88.
Wednesday Night: A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.
Thursday: A chance of showers and thunderstorms. Partly sunny, with a high near 83.
WeatherWorld.com
