Owasa, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Owasa, a city in Hardin County, Iowa.
Tonight
45°F
Rain Showers Likely
Rain showers likely. Cloudy. Low around 45, with temperatures rising to around 48 overnight. West northwest wind around 13 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Owasa
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 45°F | Rain Showers Likely | 13 mph WNW | 59% |
| Wednesday | 51°F | Chance Rain Showers | 12 to 17 mph W | 36% |
| Wednesday Night | 42°F | Chance Rain Showers | 9 to 13 mph W | 31% |
| Thursday | 51°F | Rain Showers Likely | 9 to 13 mph NW | 62% |
| Thursday Night | 37°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 8 mph N | 15% |
| Friday | 50°F | Partly Sunny | 2 to 7 mph NNE | 4% |
| Friday Night | 31°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 54°F | Mostly Sunny | 0 to 3 mph WSW | 2% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 3% |
| Sunday | 59°F | Sunny | 6 mph W | 6% |
| Sunday Night | 37°F | Mostly Clear | 5 mph SW | 2% |
| Monday | 62°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 40°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 61°F | Mostly Sunny | 5 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Owasa (42.432, -93.205). Updated through the day.
Growing snapshot for Owasa
Last spring frost
Apr 28
First fall frost
Oct 10
Growing season
164 days
Hardiness zone
5a
More local growing data for Owasa: nearby ZIP 50126 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Alden
Buckeye
Eldora
Garden City
Hubbard
Iowa Falls
New Providence
Radcliffe
Steamboat Rock
Union
Whitten
Climate data from the nearest NOAA station, Iowa Falls, Ia (0.6 mi from Owasa). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.