Tomah, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Tomah, a city in Monroe County, Wisconsin.
Tonight
55°F
Rain Showers
Rain showers. Cloudy. Low around 55, with temperatures rising to around 58 overnight. Southeast wind around 9 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Tomah
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain Showers | 9 mph SE | 91% |
| Wednesday | 58°F | Rain Showers | 8 to 13 mph S | 82% |
| Wednesday Night | 43°F | Rain Showers | 14 mph SW | 86% |
| Thursday | 51°F | Rain Showers | 10 mph NW | 77% |
| Thursday Night | 33°F | Slight Chance Rain Showers then Mostly Cloudy | 7 to 12 mph N | 17% |
| Friday | 49°F | Partly Sunny | 2 to 9 mph N | 2% |
| Friday Night | 27°F | Partly Cloudy | 0 mph | 1% |
| Saturday | 53°F | Mostly Sunny | 0 to 3 mph W | 1% |
| Saturday Night | 30°F | Partly Cloudy | 2 mph W | 8% |
| Sunday | 58°F | Slight Chance Rain Showers | 2 to 8 mph W | 15% |
| Sunday Night | 31°F | Mostly Clear | 2 mph SW | 3% |
| Monday | 61°F | Mostly Sunny | 2 to 10 mph SW | 0% |
| Monday Night | 35°F | Partly Cloudy | 5 mph W | 1% |
| Tuesday | 59°F | Sunny | 3 to 7 mph W | 1% |
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 Nov 4, 2026.