Grissom AFB, IN Weather & Growing Conditions
Overnight
60°F
Mostly Cloudy
Mostly cloudy, with a low around 60. East wind around 10 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 60°F | Mostly Cloudy | 10 mph E | 6% |
| Saturday | 81°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 10 mph SE | 70% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph S | 56% |
| Sunday | 77°F | Showers And Thunderstorms Likely | 5 to 10 mph NW | 60% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 56% |
| Monday | 66°F | Chance Rain Showers | 15 mph NE | 54% |
| Monday Night | 51°F | Chance Rain Showers | 15 mph NE | 30% |
| Tuesday | 66°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Tuesday Night | 53°F | Slight Chance Rain Showers then Mostly Cloudy | 10 to 15 mph NE | 20% |
| Wednesday | 67°F | Partly Sunny | 10 mph NE | 11% |
| Wednesday Night | 53°F | Mostly Cloudy | 5 to 10 mph N | 8% |
| 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 | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grissom AFB, IN
Last spring frost
Apr 25
First fall frost
Oct 17
Growing season
174 days
Hardiness zone
6a
Explore more for Grissom AFB, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Young America, In (11.7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.