Osage, IA Weather & Growing Conditions
Overnight
62°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 5am, then a chance of showers and thunderstorms. Cloudy, with a low around 62. Southeast wind around 12 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Showers And Thunderstorms Likely | 12 mph SE | 69% |
| Saturday | 71°F | Chance Showers And Thunderstorms | 7 to 10 mph W | 53% |
| Saturday Night | 56°F | Slight Chance Showers And Thunderstorms | 10 to 14 mph N | 22% |
| Sunday | 66°F | Mostly Cloudy | 16 mph NE | 9% |
| Sunday Night | 50°F | Mostly Cloudy then Slight Chance Rain Showers | 14 mph NE | 22% |
| Monday | 62°F | Chance Rain Showers | 10 to 14 mph NE | 28% |
| Monday Night | 45°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 10 mph E | 21% |
| Tuesday | 61°F | Mostly Sunny | 9 mph E | 9% |
| Tuesday Night | 42°F | Mostly Clear | 3 to 7 mph E | 1% |
| Wednesday | 64°F | Sunny | 7 mph E | 1% |
| Wednesday Night | 47°F | Mostly Clear | 5 mph E | 5% |
| Thursday | 66°F | Slight Chance Rain Showers | 2 to 6 mph SE | 15% |
| Thursday Night | 50°F | Partly Cloudy | 3 mph E | 3% |
| Friday | 69°F | Mostly Sunny | 3 to 7 mph SE | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Osage, IA
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
163 days
Hardiness zone
5a
Explore more for Osage, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Osage, Ia (1.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.