Keystone, IN Weather & Growing Conditions
Today
81°F
Sunny
Sunny, with a high near 81. Northeast wind around 0 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Sunny | 0 mph | 0% |
| Tonight | 59°F | Clear | 0 mph | 0% |
| Wednesday | 83°F | Sunny | 0 mph | 0% |
| Wednesday Night | 64°F | Partly Cloudy | 0 mph | 7% |
| Thursday | 81°F | Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 60% |
| Thursday Night | 65°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SW | 60% |
| Friday | 81°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 0 to 5 mph SW | 57% |
| Friday Night | 64°F | Chance Showers And Thunderstorms | 0 mph | 43% |
| Saturday | 82°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 0 to 5 mph SW | 15% |
| Saturday Night | 66°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SW | 15% |
| Sunday | 84°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Sunday Night | 69°F | Partly Cloudy then Slight Chance Rain Showers | 5 to 10 mph SW | 19% |
| Monday | 84°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 mph SW | 24% |
| Monday Night | 68°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 41% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Keystone, IN
Last spring frost
Apr 22
First fall frost
Oct 22
Growing season
181 days
Hardiness zone
6a
Explore more for Keystone, IN: full frost dates · planting calendar · Indiana frost dates
Climate data from the nearest NOAA station, Hartford City 4 Ese, In (13.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.