Oelwein, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Oelwein, a city in Fayette County, Iowa.
Today
77°F
Showers And Thunderstorms
A chance of rain showers between 7am and 1pm, then showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 73 in the afternoon. West wind around 9 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Oelwein
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms | 9 mph W | 80% |
| Tonight | 61°F | Showers And Thunderstorms | 8 mph N | 88% |
| Wednesday | 73°F | Chance Showers And Thunderstorms then Partly Sunny | 6 mph N | 30% |
| Wednesday Night | 56°F | Mostly Clear | 3 mph N | 11% |
| Thursday | 78°F | Sunny | 3 mph E | 3% |
| Thursday Night | 60°F | Mostly Clear | 3 mph SE | 0% |
| Friday | 80°F | Sunny | 3 to 9 mph S | 5% |
| Friday Night | 64°F | Mostly Clear | 8 mph S | 11% |
| Saturday | 83°F | Sunny | 9 mph S | 11% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 8 to 14 mph S | 26% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 12 mph S | 26% |
| Sunday Night | 67°F | Chance Showers And Thunderstorms | 10 mph S | 39% |
| Monday | 83°F | Chance Showers And Thunderstorms | 12 mph S | 39% |
| Monday Night | 68°F | Slight Chance Showers And Thunderstorms | 13 mph E | 37% |
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 Aug 4, 2026.