Oelwein, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oelwein, a city in Fayette County, Iowa.
Overnight
64°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then showers and thunderstorms. Cloudy, with a low around 64. Southeast wind 10 to 16 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Oelwein
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 64°F | Chance Showers And Thunderstorms | 10 to 16 mph SE | 91% |
| Saturday | 77°F | Showers And Thunderstorms | 12 mph S | 76% |
| Saturday Night | 59°F | Showers And Thunderstorms Likely | 8 to 15 mph N | 61% |
| Sunday | 66°F | Chance Rain Showers | 17 mph NE | 30% |
| Sunday Night | 53°F | Chance Rain Showers | 16 mph NE | 37% |
| Monday | 61°F | Chance Rain Showers | 14 to 17 mph NE | 37% |
| Monday Night | 48°F | Chance Rain Showers | 10 to 14 mph NE | 27% |
| Tuesday | 60°F | Slight Chance Rain Showers then Partly Sunny | 9 to 13 mph NE | 18% |
| Tuesday Night | 44°F | Mostly Clear | 8 mph NE | 3% |
| Wednesday | 64°F | Sunny | 8 mph NE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 6 mph E | 3% |
| Thursday | 65°F | Partly Sunny | 6 mph E | 6% |
| Thursday Night | 52°F | Partly Cloudy | 3 mph E | 4% |
| Friday | 68°F | Mostly Sunny | 6 mph E | 5% |
Forecast source: National Weather Service (api.weather.gov) for Oelwein (42.672, -91.913). Updated through the day.
Growing snapshot for Oelwein
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
163 days
Hardiness zone
5a
More local growing data for Oelwein: nearby ZIP 50662 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Arlington
Clermont
Elgin
Fayette
Hawkeye
Jackson Junction
Maynard
Randalia
St. Lucas
Stanley
Wadena
Waucoma
West Union
Westgate
Climate data from the nearest NOAA station, Oelwein 2 S, Ia (3.2 mi from Oelwein). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.