Plain, WI Weather & Growing Conditions
Overnight
57°F
Showers And Thunderstorms
Showers and thunderstorms. Some of the storms could produce heavy rain. Cloudy, with a low around 57. East wind around 10 mph. Chance of precipitation is 100%. New rainfall amounts between 2 and 3 inches possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 57°F | Showers And Thunderstorms | 10 mph E | 100% |
| Saturday | 69°F | Showers And Thunderstorms | 5 to 10 mph SE | 100% |
| Saturday Night | 55°F | Showers And Thunderstorms | 5 to 10 mph NE | 82% |
| Sunday | 66°F | Scattered Rain Showers then Partly Sunny | 15 mph NE | 27% |
| Sunday Night | 49°F | Mostly Cloudy | 15 mph NE | 6% |
| Monday | 63°F | Mostly Cloudy | 10 to 15 mph NE | 9% |
| Monday Night | 44°F | Mostly Cloudy | 5 to 10 mph NE | 7% |
| Tuesday | 62°F | Partly Sunny | 5 to 10 mph NE | 6% |
| Tuesday Night | 43°F | Partly Cloudy | 5 to 10 mph NE | 3% |
| Wednesday | 66°F | Mostly Sunny | 5 to 10 mph NE | 2% |
| Wednesday Night | 46°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Thursday | 67°F | Mostly Sunny | 0 to 5 mph NE | 3% |
| Thursday Night | 47°F | Partly Cloudy | 0 to 5 mph NE | 2% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NE | 3% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Plain, WI
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5a
Explore more for Plain, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lone Rock Tri Co Ap, Wi (9.1 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.