Hazleton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hazleton, a city in Buchanan County, Iowa.
Tonight
64°F
Chance Showers And Thunderstorms then Showers And Thunderstorms
A chance of showers and thunderstorms before midnight, then showers and thunderstorms. Cloudy. Low around 64, with temperatures rising to around 66 overnight. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
7-day forecast for Hazleton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 64°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 10 to 15 mph SE | 80% |
| Saturday | 77°F | Showers And Thunderstorms Likely | 10 mph SW | 66% |
| Saturday Night | 59°F | Chance Showers And Thunderstorms | 10 to 15 mph N | 51% |
| Sunday | 66°F | Chance Rain Showers | 15 mph NE | 48% |
| Sunday Night | 54°F | Slight Chance Rain Showers | 15 mph NE | 20% |
| Monday | 62°F | Chance Rain Showers | 15 mph NE | 49% |
| Monday Night | 49°F | Chance Rain Showers | 10 to 15 mph NE | 49% |
| Tuesday | 60°F | Chance Rain Showers | 10 to 15 mph NE | 36% |
| Tuesday Night | 46°F | Partly Cloudy | 5 to 10 mph NE | 4% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph NE | 0% |
| Wednesday Night | 50°F | Partly Cloudy | 5 mph E | 2% |
| Thursday | 67°F | Mostly Sunny | 5 mph E | 9% |
| Thursday Night | 52°F | Partly Cloudy | 5 mph E | 6% |
| Friday | 68°F | Mostly Sunny | 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov) for Hazleton (42.619, -91.906). Updated through the day.
Growing snapshot for Hazleton
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
163 days
Hardiness zone
5a
More local growing data for Hazleton: nearby ZIP 50641 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oelwein 2 S, Ia (3.8 mi from Hazleton). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.