Hamburg, WI Weather Forecast
Local 7-day forecast
Patchy Fog then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Hamburg, WI in one place.
Patchy fog before 8am, then a slight chance of rain showers between 3pm and 4pm, then a slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 81. Heat index values as high as 82. Southwest wind 0 to 3 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Hamburg, WI is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Aug 11, 2026 9:30 PM CDT.
The active forecast window currently covers Aug 12 to Aug 18, 2026 for Hamburg, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 12 to Aug 18, 2026
- Latest sync
- Aug 11, 2026 9:30 PM CDT
- Forecast office
- GRB
- Source
- NOAA / NWS
Daily Outlook
This Week in Hamburg
Wednesday looks like the warmest upcoming period in Hamburg at 81 degrees F.
Thursday Night is the coolest period ahead with temperatures near 53 degrees F.
The strongest winds are forecast for Saturday at about 9 mph SE.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 11, 2026 9:30 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- GRB
- Radar station
- KGRB
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Mostly cloudy. Low around 59, with temperatures rising to around 61 overnight. North northeast wind around 2 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Partly sunny, with a high near 78. Heat index values as high as 78. East northeast wind around 3 mph.
Partly cloudy, with a low around 53. East northeast wind around 5 mph.
Mostly sunny, with a high near 77.
A chance of rain showers after 1am. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Showers and thunderstorms likely before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 7am. Mostly cloudy, with a high near 75. Chance of precipitation is 50%.
Partly cloudy, with a low around 53.
Sunny, with a high near 77.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 55. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Aug 12
|
Patchy Fog then Slight Chance Showers And Thunderstorms
|
81°F |
0 to 3 mph
SW
|
|
Wednesday Night
Aug 12
|
Slight Chance Showers And Thunderstorms then Mostly Cloudy
|
59°F |
2 mph
NNE
|
|
Thursday
Aug 13
|
Partly Sunny
|
78°F |
3 mph
ENE
|
|
Thursday Night
Aug 13
|
Partly Cloudy
|
53°F |
5 mph
ENE
|
|
Friday
Aug 14
|
Mostly Sunny
|
77°F |
7 mph
E
|
|
Friday Night
Aug 14
|
Mostly Cloudy then Chance Rain Showers
|
55°F |
8 mph
ESE
|
|
Saturday
Aug 15
|
Rain Showers Likely
|
73°F |
9 mph
SE
|
|
Saturday Night
Aug 15
|
Showers And Thunderstorms Likely
|
59°F |
3 to 7 mph
SW
|
|
Sunday
Aug 16
|
Chance Showers And Thunderstorms then Mostly Cloudy
|
75°F |
5 to 9 mph
NW
|
|
Sunday Night
Aug 16
|
Partly Cloudy
|
53°F |
2 to 7 mph
NNW
|
|
Monday
Aug 17
|
Sunny
|
77°F |
3 mph
WNW
|
|
Monday Night
Aug 17
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
55°F |
2 mph
SW
|
|
Tuesday
Aug 18
|
Slight Chance Showers And Thunderstorms
|
79°F |
3 to 8 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Hamburg.