Tomah, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tomah, a city in Monroe County, Wisconsin.
Today
79°F
Scattered Rain Showers then Mostly Cloudy
Scattered rain showers between 8am and noon. Mostly cloudy. High near 79, with temperatures falling to around 76 in the afternoon. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Tomah
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Scattered Rain Showers then Mostly Cloudy | 5 to 10 mph W | 42% |
| Tonight | 57°F | Scattered Showers And Thunderstorms | 0 to 5 mph W | 39% |
| Wednesday | 79°F | Partly Sunny | 0 to 5 mph W | 4% |
| Wednesday Night | 52°F | Mostly Clear | 0 to 3 mph SW | 1% |
| Thursday | 84°F | Sunny | 0 to 3 mph S | 0% |
| Thursday Night | 57°F | Mostly Clear | 3 mph SW | 0% |
| Friday | 86°F | Sunny | 1 to 9 mph SW | 4% |
| Friday Night | 62°F | Slight Chance Showers And Thunderstorms | 3 to 9 mph SW | 16% |
| Saturday | 87°F | Mostly Sunny | 3 to 8 mph SW | 10% |
| Saturday Night | 65°F | Chance Showers And Thunderstorms | 3 to 8 mph SW | 36% |
| Sunday | 87°F | Chance Rain Showers | 2 to 9 mph W | 36% |
| Sunday Night | 63°F | Chance Showers And Thunderstorms | 1 to 7 mph SW | 40% |
| Monday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 1 to 6 mph S | 39% |
| Monday Night | 63°F | Slight Chance Showers And Thunderstorms | 1 to 6 mph N | 30% |
Forecast source: National Weather Service (api.weather.gov) for Tomah (43.988, -90.501). Updated through the day.
Growing snapshot for Tomah
Last spring frost
May 6
First fall frost
Oct 3
Growing season
148 days
Hardiness zone
4b
More local growing data for Tomah: nearby ZIP 54660 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Mather 3 Nw, Wi (15.2 mi from Tomah). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.