Plain, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Plain, a village in Sauk County, Wisconsin.
Today
81°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 81. Southwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Plain
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 81°F | Mostly Cloudy then Chance Showers And Thunderstorms | 10 mph SW | 33% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 0 to 10 mph W | 72% |
| Wednesday | 77°F | Areas Of Fog then Partly Sunny | 0 to 5 mph W | 31% |
| Wednesday Night | 54°F | Partly Cloudy | 0 to 5 mph W | 5% |
| Thursday | 80°F | Sunny | 0 mph | 1% |
| Thursday Night | 57°F | Mostly Clear | 0 mph | 0% |
| Friday | 82°F | Sunny | 0 to 10 mph W | 3% |
| Friday Night | 62°F | Mostly Clear | 5 mph SW | 8% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 11% |
| Saturday Night | 67°F | Partly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph SW | 28% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 0 to 10 mph SW | 50% |
| Monday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 50% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph N | 38% |
Forecast source: National Weather Service (api.weather.gov) for Plain (43.277, -90.043). Updated through the day.
Growing snapshot for Plain
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5a
More local growing data for Plain: nearby ZIP 53577 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Baraboo
Bluffview
Ironton
La Valle
Lake Delton
Lime Ridge
Loganville
Merrimac
North Freedom
Prairie du Sac
Reedsburg
Rock Springs
Sauk City
Spring Green
West Baraboo
Climate data from the nearest NOAA station, Lone Rock Tri Co Ap, Wi (9.1 mi from Plain). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.