Hamburg, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamburg, a city in Fremont County, Iowa.
Tonight
43°F
Chance Rain Showers then Cloudy
A chance of rain showers before 9pm. Cloudy. Low around 43, with temperatures rising to around 46 overnight. Northwest wind 13 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Hamburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Chance Rain Showers then Cloudy | 13 to 18 mph NW | 28% |
| Wednesday | 54°F | Mostly Cloudy | 9 to 15 mph WNW | 6% |
| Wednesday Night | 41°F | Partly Cloudy then Slight Chance Rain Showers | 9 mph WNW | 15% |
| Thursday | 54°F | Chance Rain Showers | 8 to 12 mph NW | 28% |
| Thursday Night | 39°F | Mostly Cloudy | 7 mph NNW | 5% |
| Friday | 55°F | Partly Sunny | 1 to 5 mph N | 6% |
| Friday Night | 36°F | Mostly Cloudy | 1 mph WNW | 0% |
| Saturday | 60°F | Mostly Sunny | 3 mph SW | 3% |
| Saturday Night | 38°F | Mostly Clear | 2 mph W | 6% |
| Sunday | 65°F | Sunny | 3 mph W | 3% |
| Sunday Night | 41°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 69°F | Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 42°F | Mostly Clear | 5 mph NW | 0% |
| Tuesday | 67°F | Mostly Sunny | 2 to 6 mph NE | 1% |
Forecast source: National Weather Service (api.weather.gov) for Hamburg (40.606, -95.655). Updated through the day.
Growing snapshot for Hamburg
Last spring frost
Apr 19
First fall frost
Oct 19
Growing season
182 days
Hardiness zone
5b
More local growing data for Hamburg: nearby ZIP 51640 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Sidney 1Sse, Ia (7.7 mi from Hamburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.