Mount Ayr, IA Weather & Growing Conditions
Overnight
44°F
Cloudy
Cloudy. Low around 44, with temperatures rising to around 46 overnight. West northwest wind around 14 mph, with gusts as high as 21 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Cloudy | 14 mph WNW | 12% |
| Wednesday | 51°F | Cloudy | 12 to 16 mph W | 13% |
| Wednesday Night | 42°F | Mostly Cloudy | 10 mph W | 9% |
| Thursday | 52°F | Chance Rain Showers then Mostly Cloudy | 8 to 12 mph NW | 25% |
| Thursday Night | 41°F | Mostly Cloudy | 8 mph N | 6% |
| Friday | 50°F | Partly Sunny | 3 to 8 mph N | 3% |
| Friday Night | 31°F | Partly Cloudy | 2 mph ENE | 0% |
| Saturday | 52°F | Mostly Sunny | 3 mph SSW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 59°F | Sunny | 5 mph W | 0% |
| Sunday Night | 37°F | Clear | 5 mph SW | 0% |
| Monday | 64°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 41°F | Clear | 5 mph W | 0% |
| Tuesday | 64°F | Sunny | 5 mph N | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Ayr, IA
Last spring frost
Apr 25
First fall frost
Oct 12
Growing season
169 days
Hardiness zone
5b
Explore more for Mount Ayr, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Mt Ayr, Ia (2.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.