Mount Ayr, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mount Ayr, a town in Newton County, Indiana.
This Afternoon
75°F
Chance Rain Showers
A chance of rain showers. Mostly sunny, with a high near 75. East wind around 10 mph. Chance of precipitation is 30%.
7-day forecast for Mount Ayr
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 75°F | Chance Rain Showers | 10 mph E | 30% |
| Tonight | 62°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph ESE | 19% |
| Saturday | 81°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 66% |
| Saturday Night | 67°F | Chance Showers And Thunderstorms | 5 mph SSW | 68% |
| Sunday | 74°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 68% |
| Sunday Night | 55°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 65% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 62% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 41% |
| Tuesday | 66°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 20% |
| Wednesday | 68°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Wednesday Night | 51°F | Mostly Cloudy | 0 to 5 mph NNE | 7% |
| Thursday | 70°F | Partly Sunny | 5 mph NNE | 3% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 3% |
Forecast source: National Weather Service (api.weather.gov) for Mount Ayr (40.952, -87.299). Updated through the day.
Growing snapshot for Mount Ayr
Last spring frost
Apr 23
First fall frost
Oct 18
Growing season
177 days
Hardiness zone
6a
More local growing data for Mount Ayr: nearby ZIP 47964 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Rensselaer, In (6.8 mi from Mount Ayr). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.