Grand Marsh, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grand Marsh, a community in Adams County, Wisconsin.
Tonight
52°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy. Low around 52, with temperatures rising to around 54 overnight. East wind 13 to 16 mph, with gusts as high as 28 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast for Grand Marsh
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Showers And Thunderstorms | 13 to 16 mph E | 96% |
| Saturday | 66°F | Showers And Thunderstorms | 8 to 13 mph E | 78% |
| Saturday Night | 50°F | Showers And Thunderstorms | 12 mph NE | 76% |
| Sunday | 66°F | Slight Chance Rain Showers then Partly Sunny | 13 mph NE | 15% |
| Sunday Night | 45°F | Mostly Cloudy | 12 mph NE | 2% |
| Monday | 61°F | Mostly Cloudy then Slight Chance Rain Showers | 13 mph NE | 15% |
| Monday Night | 42°F | Slight Chance Rain Showers | 10 mph NE | 18% |
| Tuesday | 61°F | Slight Chance Rain Showers then Partly Sunny | 10 mph NE | 18% |
| Tuesday Night | 42°F | Partly Cloudy | 3 to 7 mph NE | 4% |
| Wednesday | 64°F | Mostly Sunny | 7 mph NE | 3% |
| Wednesday Night | 44°F | Partly Cloudy | 1 to 5 mph NE | 1% |
| Thursday | 68°F | Mostly Sunny | 1 to 5 mph NE | 5% |
| Thursday Night | 46°F | Partly Cloudy | 2 mph NE | 6% |
| Friday | 70°F | Mostly Sunny | 1 to 5 mph N | 4% |
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 Sep 19, 2026.