Hazleton, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hazleton, a city in Buchanan County, Iowa.
Overnight
63°F
Mostly Cloudy
Mostly cloudy. Low around 63, with temperatures rising to around 65 overnight. South wind around 10 mph.
7-day forecast for Hazleton
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 63°F | Mostly Cloudy | 10 mph S | 0% |
| Tuesday | 77°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 34% |
| Tuesday Night | 61°F | Showers And Thunderstorms Likely | 5 to 10 mph N | 63% |
| Wednesday | 72°F | Chance Showers And Thunderstorms | 5 mph N | 37% |
| Wednesday Night | 55°F | Slight Chance Rain Showers | 0 to 5 mph N | 20% |
| Thursday | 77°F | Sunny | 0 to 5 mph E | 3% |
| Thursday Night | 60°F | Mostly Clear | 0 to 5 mph SE | 1% |
| Friday | 80°F | Sunny | 0 to 10 mph S | 3% |
| Friday Night | 65°F | Mostly Clear | 5 to 10 mph S | 11% |
| Saturday | 84°F | Sunny | 5 to 10 mph S | 11% |
| Saturday Night | 69°F | Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms | 10 to 15 mph S | 22% |
| Sunday | 85°F | Slight Chance Showers And Thunderstorms | 10 mph S | 22% |
| Sunday Night | 68°F | Chance Showers And Thunderstorms | 10 mph S | 39% |
| Monday | 84°F | Chance Showers And Thunderstorms | 10 mph S | 39% |
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 Aug 4, 2026.