Grissom AFB, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grissom AFB, a community in Miami County, Indiana.
Tonight
60°F
Partly Cloudy
Partly cloudy, with a low around 60. East wind around 10 mph.
7-day forecast for Grissom AFB
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Partly Cloudy | 10 mph E | 6% |
| Saturday | 81°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph SE | 69% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 58% |
| Sunday | 80°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph NW | 68% |
| Sunday Night | 57°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 68% |
| Monday | 68°F | Showers And Thunderstorms Likely | 15 mph NE | 65% |
| Monday Night | 52°F | Chance Showers And Thunderstorms | 15 mph NE | 38% |
| Tuesday | 67°F | Slight Chance Showers And Thunderstorms | 15 mph NE | 24% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 18% |
| Wednesday | 67°F | Mostly Cloudy | 10 mph NE | 11% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph N | 9% |
| Thursday | 70°F | Partly Sunny | 5 to 10 mph N | 5% |
| Thursday Night | 53°F | Mostly Cloudy | 5 to 10 mph N | 5% |
| Friday | 71°F | Mostly Sunny | 5 to 10 mph NE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Grissom AFB (40.657, -86.145). Updated through the day.
Growing snapshot for Grissom AFB
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
6a
More local growing data for Grissom AFB: nearby ZIP 46971 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Young America, In (11.7 mi from Grissom AFB). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.