Grand Marsh, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Marsh, a community in Adams County, Wisconsin.
Today
80°F
Isolated Rain Showers then Isolated Showers And Thunderstorms
Isolated rain showers between 10am and 11am, then isolated showers and thunderstorms. Mostly cloudy. High near 80, with temperatures falling to around 77 in the afternoon. West wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
7-day forecast for Grand Marsh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 80°F | Isolated Rain Showers then Isolated Showers And Thunderstorms | 7 to 10 mph W | 22% |
| Tonight | 60°F | Scattered Showers And Thunderstorms | 5 mph NW | 37% |
| Wednesday | 77°F | Partly Sunny | 1 to 5 mph W | 10% |
| Wednesday Night | 53°F | Partly Cloudy | 0 to 3 mph SW | 3% |
| Thursday | 81°F | Sunny | 0 to 5 mph SW | 2% |
| Thursday Night | 57°F | Mostly Clear | 3 mph SW | 0% |
| Friday | 84°F | Sunny | 2 to 10 mph SW | 3% |
| Friday Night | 62°F | Mostly Clear | 3 to 8 mph SW | 13% |
| Saturday | 85°F | Mostly Sunny | 5 to 9 mph SW | 13% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 3 to 9 mph SW | 37% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 37% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 2 to 8 mph SW | 48% |
| Monday | 82°F | Chance Rain Showers | 2 to 7 mph SW | 43% |
| Monday Night | 63°F | Chance Showers And Thunderstorms | 2 to 6 mph N | 35% |
Forecast source: National Weather Service (api.weather.gov) for Grand Marsh (43.885, -89.707). Updated through the day.
Growing snapshot for Grand Marsh
Last spring frost
May 9
First fall frost
Oct 3
Growing season
147 days
Hardiness zone
4b
More local growing data for Grand Marsh: nearby ZIP 53936 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Friendship, Wi (9.6 mi from Grand Marsh). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.