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
66°F
Slight Chance Rain Showers
A slight chance of drizzle before 2pm, then a slight chance of rain showers and a slight chance of drizzle. Mostly cloudy. High near 66, with temperatures falling to around 57 in the afternoon. West southwest wind around 15 mph, with gusts as high as 25 mph.
7-day forecast for Mount Ayr
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Slight Chance Rain Showers | 15 mph WSW | 1% |
| Tonight | 47°F | Slight Chance Rain Showers then Cloudy | 10 to 15 mph WSW | 9% |
| Thursday | 57°F | Mostly Cloudy then Chance Rain | 5 to 15 mph SW | 31% |
| Thursday Night | 40°F | Rain | 5 mph NW | 75% |
| Friday | 51°F | Partly Sunny | 5 to 10 mph NNW | 11% |
| Friday Night | 33°F | Partly Cloudy | 5 mph NW | 3% |
| Saturday | 52°F | Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 30°F | Mostly Clear | 0 mph | 0% |
| Sunday | 58°F | Sunny | 0 to 5 mph W | 1% |
| Sunday Night | 33°F | Mostly Clear | 0 mph | 0% |
| Monday | 62°F | Sunny | 0 to 5 mph SW | 0% |
| Monday Night | 38°F | Mostly Clear | 0 to 5 mph SW | 0% |
| Tuesday | 63°F | Sunny | 0 to 5 mph WNW | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 0 mph | 2% |
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 Nov 4, 2026.