Grand Marsh, WI Weather & Growing Conditions
Tonight
56°F
Showers And Thunderstorms
Showers and thunderstorms. Cloudy. Low around 56, with temperatures rising to around 59 overnight. South wind around 12 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 56°F | Showers And Thunderstorms | 12 mph S | 94% |
| Wednesday | 60°F | Rain Showers | 9 to 13 mph S | 77% |
| Wednesday Night | 44°F | Rain Showers Likely | 13 mph SW | 72% |
| Thursday | 52°F | Rain Showers | 10 mph W | 83% |
| Thursday Night | 35°F | Chance Rain Showers then Mostly Cloudy | 10 mph N | 26% |
| Friday | 48°F | Partly Sunny | 3 to 9 mph N | 9% |
| Friday Night | 29°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph W | 1% |
| Saturday Night | 31°F | Partly Cloudy | 1 to 5 mph W | 10% |
| Sunday | 57°F | Slight Chance Rain Showers | 5 to 9 mph W | 17% |
| Sunday Night | 32°F | Mostly Clear | 5 mph W | 4% |
| Monday | 59°F | Mostly Sunny | 3 to 10 mph SW | 1% |
| Monday Night | 37°F | Partly Cloudy | 7 mph W | 1% |
| Tuesday | 59°F | Sunny | 8 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Grand Marsh, WI
Last spring frost
May 9
First fall frost
Oct 3
Growing season
147 days
Hardiness zone
4b
Explore more for Grand Marsh, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Friendship, Wi (9.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.