Harman US

Dayton, IN Weather & Growing Conditions

Today
83°F
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
A chance of showers and thunderstorms before noon, then showers and thunderstorms likely between noon and 2pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 83. South southeast wind around 7 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
Today 83°F Chance Showers And Thunderstorms then Showers And Thunderstorms Likely 7 mph SSE 68%
Tonight 68°F Chance Showers And Thunderstorms 2 to 6 mph S 29%
Sunday 79°F Chance Showers And Thunderstorms 2 to 9 mph NW 71%
Sunday Night 57°F Showers And Thunderstorms Likely 13 mph NE 70%
Monday 67°F Showers And Thunderstorms Likely 15 mph ENE 58%
Monday Night 52°F Chance Rain Showers 10 to 15 mph NE 40%
Tuesday 66°F Slight Chance Rain Showers 14 mph NE 21%
Tuesday Night 52°F Slight Chance Rain Showers 7 to 14 mph NE 21%
Wednesday 68°F Mostly Cloudy 7 to 10 mph NNE 14%
Wednesday Night 52°F Mostly Cloudy 5 to 10 mph NNE 9%
Thursday 69°F Partly Sunny 5 to 9 mph NNE 2%
Thursday Night 53°F Partly Cloudy 3 to 9 mph NNE 2%
Friday 72°F Mostly Sunny 3 to 9 mph NNE 2%
Friday Night 51°F Partly Cloudy 2 to 9 mph NE 2%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Dayton, IN

Last spring frost
Apr 20
First fall frost
Oct 20
Growing season
182 days
Hardiness zone
6a

Explore more for Dayton, IN: full frost dates · planting calendar · Indiana frost dates

Climate data from the nearest NOAA station, Lafayette 8 S, In (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.