Mount Sterling, IA Weather & Growing Conditions
Today
87°F
Patchy Fog then Slight Chance Showers And Thunderstorms
Patchy fog before 8am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 87. South wind 5 to 10 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Patchy Fog then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 15% |
| Tonight | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NW | 66% |
| Sunday | 74°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 5 to 10 mph N | 71% |
| Sunday Night | 60°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 64% |
| Monday | 64°F | Showers And Thunderstorms Likely | 10 mph NE | 64% |
| Monday Night | 54°F | Chance Rain Showers | 5 to 10 mph NE | 44% |
| Tuesday | 62°F | Chance Rain Showers | 5 to 10 mph NE | 41% |
| Tuesday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 4% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 0 to 5 mph NE | 3% |
| Thursday | 70°F | Partly Sunny | 0 to 5 mph NE | 7% |
| Thursday Night | 56°F | Mostly Cloudy | 0 mph | 4% |
| Friday | 73°F | Partly Sunny | 0 to 5 mph E | 6% |
| Friday Night | 56°F | Mostly Cloudy | 0 to 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mount Sterling, IA
Last spring frost
Apr 26
First fall frost
Oct 13
Growing season
169 days
Hardiness zone
6a
Explore more for Mount Sterling, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Keosauqua, Ia (7.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.