Lake Tomahawk, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Lake Tomahawk, a community in Oneida County, Wisconsin.
Today
77°F
Chance Rain Showers
A chance of rain showers before 1pm. Mostly cloudy, with a high near 77. Heat index values as high as 77. West wind 6 to 10 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Lake Tomahawk
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Chance Rain Showers | 6 to 10 mph W | 36% |
| Tonight | 54°F | Mostly Cloudy | 0 to 6 mph NNW | 8% |
| Wednesday | 76°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Wednesday Night | 52°F | Mostly Clear then Patchy Fog | 0 to 3 mph SSW | 0% |
| Thursday | 81°F | Patchy Fog then Sunny | 2 to 9 mph SW | 1% |
| Thursday Night | 59°F | Mostly Clear | 7 mph SSW | 3% |
| Friday | 84°F | Sunny | 5 to 10 mph SW | 14% |
| Friday Night | 60°F | Chance Showers And Thunderstorms | 5 to 8 mph SW | 38% |
| Saturday | 81°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 3 to 7 mph WSW | 23% |
| Saturday Night | 60°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 1 to 6 mph WSW | 48% |
| Sunday | 80°F | Chance Showers And Thunderstorms | 2 to 8 mph W | 47% |
| Sunday Night | 57°F | Chance Showers And Thunderstorms | 0 to 7 mph NNW | 29% |
| Monday | 79°F | Patchy Fog then Chance Showers And Thunderstorms | 1 to 6 mph NNW | 25% |
| Monday Night | 57°F | Chance Showers And Thunderstorms | 1 to 6 mph N | 25% |
Forecast source: National Weather Service (api.weather.gov) for Lake Tomahawk (45.809, -89.577). Updated through the day.
Growing snapshot for Lake Tomahawk
Last spring frost
May 19
First fall frost
Oct 3
Growing season
136 days
Hardiness zone
4a
More local growing data for Lake Tomahawk: nearby ZIP 54539 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, St Germain, Wi (8.5 mi from Lake Tomahawk). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.