Markesan, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Markesan, a city in Green Lake County, Wisconsin.
This Afternoon
66°F
Rain Showers
Rain showers. Cloudy. High near 66, with temperatures falling to around 61 in the afternoon. East wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Markesan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 66°F | Rain Showers | 10 mph E | 89% |
| Tonight | 55°F | Showers And Thunderstorms | 10 to 15 mph E | 95% |
| Saturday | 67°F | Showers And Thunderstorms | 10 to 15 mph E | 91% |
| Saturday Night | 54°F | Showers And Thunderstorms | 10 to 15 mph NE | 76% |
| Sunday | 66°F | Chance Rain Showers | 15 mph NE | 31% |
| Sunday Night | 48°F | Mostly Cloudy | 15 mph NE | 6% |
| Monday | 62°F | Mostly Cloudy | 10 to 15 mph NE | 10% |
| Monday Night | 45°F | Mostly Cloudy | 10 to 15 mph NE | 12% |
| Tuesday | 61°F | Partly Sunny | 10 to 15 mph NE | 12% |
| Tuesday Night | 44°F | Partly Cloudy | 5 to 10 mph NE | 6% |
| Wednesday | 64°F | Mostly Sunny | 5 to 10 mph NE | 4% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 68°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 48°F | Partly Cloudy | 0 to 5 mph NE | 6% |
Forecast source: National Weather Service (api.weather.gov) for Markesan (43.711, -88.991). Updated through the day.
Growing snapshot for Markesan
Last spring frost
May 8
First fall frost
Oct 2
Growing season
144 days
Hardiness zone
5a
More local growing data for Markesan: nearby ZIP 53946 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Markesan, Wi (1.6 mi from Markesan). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.