Markesan, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Markesan, a city in Green Lake County, Wisconsin.
Today
82°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms between 2pm and 3pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 82. Southwest wind 10 to 15 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Markesan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 82°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 to 15 mph SW | 32% |
| Tonight | 61°F | Chance Showers And Thunderstorms | 5 to 10 mph W | 64% |
| Wednesday | 77°F | Patchy Fog then Partly Sunny | 5 mph W | 29% |
| Wednesday Night | 56°F | Mostly Cloudy | 0 to 5 mph SW | 4% |
| Thursday | 79°F | Sunny | 0 to 5 mph SW | 3% |
| Thursday Night | 56°F | Mostly Clear | 0 to 5 mph S | 2% |
| Friday | 82°F | Sunny | 5 to 10 mph SW | 2% |
| Friday Night | 60°F | Mostly Clear | 5 to 10 mph SW | 9% |
| Saturday | 83°F | Mostly Sunny | 5 to 10 mph SW | 12% |
| Saturday Night | 64°F | Chance Rain Showers | 5 to 10 mph SW | 34% |
| Sunday | 84°F | Chance Showers And Thunderstorms | 10 mph W | 34% |
| Sunday Night | 62°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 52% |
| Monday | 82°F | Chance Rain Showers | 5 to 10 mph S | 44% |
| Monday Night | 62°F | Chance Showers And Thunderstorms | 5 to 10 mph NE | 40% |
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 Aug 4, 2026.