Mount Ayr, IA Weather & Growing Conditions
Overnight
70°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 3am. Mostly cloudy. Low around 70, with temperatures rising to around 72 overnight. South southwest wind around 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 70°F | Slight Chance Showers And Thunderstorms | 7 mph SSW | 19% |
| Saturday | 82°F | Chance Showers And Thunderstorms | 9 mph SW | 39% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 to 8 mph N | 61% |
| Sunday | 67°F | Chance Showers And Thunderstorms | 8 to 12 mph NNE | 50% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 10 mph NE | 56% |
| Monday | 60°F | Showers And Thunderstorms Likely | 12 mph NE | 56% |
| Monday Night | 52°F | Chance Rain Showers | 7 to 10 mph NE | 43% |
| Tuesday | 59°F | Partly Sunny | 9 mph NE | 7% |
| Tuesday Night | 46°F | Partly Cloudy | 3 to 7 mph ENE | 5% |
| Wednesday | 62°F | Mostly Sunny | 5 mph ENE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 7% |
| Thursday | 65°F | Slight Chance Rain Showers | 5 mph ESE | 21% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph ESE | 22% |
| Friday | 66°F | Slight Chance Rain Showers | 6 mph ESE | 22% |
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 Sep 19, 2026.