About Grissom Air Force Base, IN

With a population of around 5,500, Grissom Air Force Base sits in Indiana, United States. The city operates in the America/Indiana/Indianapolis time zone.

In 2025, Grissom Air Force Base averaged an annual temperature of 52°F, with hottest temperatures reaching 93°F in June and lowest around -3°F in January. The city received approximately 32 inches of precipitation during the year.