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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.