Mount Sterling, IA Weather & Growing Conditions
Today
91°F
Mostly Sunny
Mostly sunny. High near 91, with temperatures falling to around 88 in the afternoon. Southwest wind around 5 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 91°F | Mostly Sunny | 5 mph SW | 9% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 5 mph NE | 34% |
| Wednesday | 82°F | Chance Showers And Thunderstorms | 5 mph NE | 78% |
| Wednesday Night | 63°F | Showers And Thunderstorms Likely | 0 to 5 mph N | 73% |
| Thursday | 83°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 0 to 5 mph NE | 71% |
| Thursday Night | 63°F | Mostly Clear | 0 mph | 8% |
| Friday | 86°F | Mostly Sunny | 0 to 5 mph S | 8% |
| Friday Night | 66°F | Slight Chance Showers And Thunderstorms | 0 mph | 17% |
| Saturday | 90°F | Slight Chance Showers And Thunderstorms then Sunny | 0 to 5 mph S | 17% |
| Saturday Night | 72°F | Mostly Clear | 5 mph S | 7% |
| Sunday | 93°F | Sunny | 5 to 10 mph SW | 7% |
| Sunday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 18% |
| Monday | 93°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph S | 18% |
| Monday Night | 72°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 25% |
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 Aug 4, 2026.