Grellton, WI Weather Forecast
Local 7-day forecast
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Grellton, WI in one place.
A slight chance of rain showers between 7am and 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 72. Northeast wind 5 to 10 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Grellton, 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: Sep 14, 2026 6:56 PM CDT.
The active forecast window currently covers Sep 16 to Sep 20, 2026 for Grellton, WI.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 16 to Sep 20, 2026
- Latest sync
- Sep 14, 2026 6:56 PM CDT
- Forecast office
- MKX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grellton
Saturday looks like the warmest upcoming period in Grellton at 79 degrees F.
Sunday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Wednesday at about 5 to 10 mph NE.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 14, 2026 6:56 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- MKX
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Southeast wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Showers and thunderstorms likely before 1pm. Mostly cloudy, with a high near 77. North wind 0 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers after 1am. Mostly cloudy, with a low around 59. Northeast wind 0 to 5 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of rain showers. Mostly cloudy, with a high near 76. Chance of precipitation is 50%.
A chance of rain showers before 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Showers and thunderstorms likely. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Showers and thunderstorms likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
A chance of rain showers. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
A chance of rain showers before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Sep 16
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
72°F |
5 to 10 mph
NE
|
|
Wednesday Night
Sep 16
|
Showers And Thunderstorms Likely
|
60°F |
0 to 5 mph
SE
|
|
Thursday
Sep 17
|
Showers And Thunderstorms Likely
|
77°F |
0 to 5 mph
N
|
|
Thursday Night
Sep 17
|
Mostly Cloudy then Chance Rain Showers
|
59°F |
0 to 5 mph
NE
|
|
Friday
Sep 18
|
Chance Rain Showers
|
76°F |
0 to 10 mph
E
|
|
Friday Night
Sep 18
|
Showers And Thunderstorms Likely
|
63°F |
5 to 10 mph
SE
|
|
Saturday
Sep 19
|
Showers And Thunderstorms Likely
|
79°F |
10 mph
SW
|
|
Saturday Night
Sep 19
|
Showers And Thunderstorms Likely
|
60°F |
5 to 10 mph
N
|
|
Sunday
Sep 20
|
Chance Rain Showers
|
74°F |
5 to 10 mph
NE
|
|
Sunday Night
Sep 20
|
Chance Rain Showers
|
56°F |
5 to 10 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grellton.