Hamburg, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Hamburg, a city in Fremont County, Iowa.
Today
85°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly sunny. High near 85, with temperatures falling to around 83 in the afternoon. Northeast wind 3 to 8 mph. Chance of precipitation is 20%.
7-day forecast for Hamburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Slight Chance Showers And Thunderstorms | 3 to 8 mph NE | 23% |
| Tonight | 64°F | Chance Showers And Thunderstorms | 8 to 12 mph NNE | 77% |
| Wednesday | 75°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 9 mph NE | 72% |
| Wednesday Night | 61°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph NE | 22% |
| Thursday | 82°F | Mostly Sunny | 3 mph E | 4% |
| Thursday Night | 65°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 3 mph SSE | 23% |
| Friday | 86°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 6 mph S | 23% |
| Friday Night | 69°F | Mostly Clear | 5 mph SSE | 5% |
| Saturday | 91°F | Sunny | 3 to 12 mph S | 2% |
| Saturday Night | 74°F | Mostly Clear | 13 mph S | 7% |
| Sunday | 93°F | Mostly Sunny | 9 to 13 mph S | 7% |
| Sunday Night | 74°F | Partly Cloudy | 14 mph SSE | 8% |
| Monday | 94°F | Mostly Sunny | 10 to 15 mph S | 6% |
| Monday Night | 75°F | Partly Cloudy | 12 to 15 mph S | 13% |
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 Aug 4, 2026.