Mountain, WI Weather & Growing Conditions
Today
79°F
Partly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of rain showers between noon and 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then a slight chance of showers and thunderstorms. Partly sunny. High near 79, with temperatures falling to around 77 in the afternoon. Heat index values as high as 78. West southwest wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Partly Sunny then Slight Chance Showers And Thunderstorms | 8 mph WSW | 31% |
| Tonight | 57°F | Slight Chance Showers And Thunderstorms | 1 to 5 mph NNW | 19% |
| Wednesday | 78°F | Mostly Sunny | 3 mph WSW | 3% |
| Wednesday Night | 53°F | Partly Cloudy then Patchy Fog | 2 mph NNE | 4% |
| Thursday | 82°F | Patchy Fog then Sunny | 0 to 5 mph WSW | 1% |
| Thursday Night | 59°F | Mostly Clear | 3 mph SSW | 1% |
| Friday | 85°F | Sunny | 3 to 8 mph SW | 5% |
| Friday Night | 63°F | Chance Showers And Thunderstorms | 3 to 7 mph SW | 27% |
| Saturday | 84°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 6 mph WSW | 22% |
| Saturday Night | 62°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 5 mph WSW | 43% |
| Sunday | 83°F | Chance Showers And Thunderstorms | 2 to 6 mph W | 43% |
| Sunday Night | 59°F | Chance Showers And Thunderstorms | 1 to 5 mph NW | 32% |
| Monday | 80°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 32% |
| Monday Night | 58°F | Chance Showers And Thunderstorms | 1 to 5 mph N | 32% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Mountain, WI
Last spring frost
May 22
First fall frost
Sep 28
Growing season
129 days
Hardiness zone
4b
Explore more for Mountain, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Lakewood 3 Ne, Wi (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.