Morning Sun, IA Weather & Growing Conditions
Tonight
70°F
Partly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 70. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 70°F | Partly Cloudy then Chance Showers And Thunderstorms | 10 mph SE | 42% |
| Saturday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph S | 50% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 5 mph NW | 76% |
| Sunday | 73°F | Showers And Thunderstorms | 5 to 15 mph NE | 76% |
| Sunday Night | 59°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 69% |
| Monday | 65°F | Rain Showers Likely | 15 mph NE | 65% |
| Monday Night | 54°F | Rain Showers Likely | 10 to 15 mph NE | 57% |
| Tuesday | 62°F | Chance Rain Showers | 10 mph NE | 43% |
| Tuesday Night | 49°F | Partly Cloudy | 5 to 10 mph NE | 7% |
| Wednesday | 66°F | Mostly Sunny | 5 mph NE | 2% |
| Wednesday Night | 53°F | Partly Cloudy | 5 mph NE | 2% |
| Thursday | 69°F | Partly Sunny | 5 mph NE | 8% |
| Thursday Night | 55°F | Partly Cloudy | 0 to 5 mph NE | 6% |
| Friday | 71°F | Mostly Sunny | 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Morning Sun, IA
Last spring frost
Apr 26
First fall frost
Oct 10
Growing season
167 days
Hardiness zone
5b
Explore more for Morning Sun, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Columbus Junction, Ia (12.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.