Mount Sterling, IA Weather & Growing Conditions
This Afternoon
70°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 70, with temperatures falling to around 66 in the afternoon. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 70°F | Showers And Thunderstorms | 15 mph S | 85% |
| Tonight | 48°F | Slight Chance Rain Showers | 10 to 15 mph SW | 21% |
| Wednesday | 55°F | Slight Chance Rain Showers then Mostly Cloudy | 15 mph W | 16% |
| Wednesday Night | 43°F | Mostly Cloudy | 5 to 10 mph SW | 3% |
| Thursday | 55°F | Mostly Cloudy then Slight Chance Rain Showers | 5 to 10 mph W | 21% |
| Thursday Night | 42°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph NW | 20% |
| Friday | 53°F | Partly Sunny | 5 mph N | 10% |
| Friday Night | 35°F | Mostly Cloudy | 0 to 5 mph N | 0% |
| Saturday | 54°F | Partly Sunny | 0 mph | 2% |
| Saturday Night | 36°F | Mostly Clear | 0 mph | 3% |
| Sunday | 60°F | Sunny | 0 to 5 mph W | 8% |
| Sunday Night | 37°F | Mostly Clear | 0 mph | 3% |
| Monday | 65°F | Sunny | 0 to 5 mph SW | 1% |
| Monday Night | 41°F | Mostly Clear | 0 to 5 mph W | 0% |
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 Nov 3, 2026.