Seneca, WI Weather & Growing Conditions
Today
79°F
Mostly Cloudy then Scattered Showers And Thunderstorms
Isolated rain showers between 2pm and 5pm, then scattered showers and thunderstorms. Mostly cloudy. High near 79, with temperatures falling to around 74 in the afternoon. West wind around 8 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 | Mostly Cloudy then Scattered Showers And Thunderstorms | 8 mph W | 32% |
| Tonight | 61°F | Scattered Showers And Thunderstorms | 6 mph NW | 59% |
| Wednesday | 76°F | Isolated Rain Showers then Partly Sunny | 5 mph NW | 16% |
| Wednesday Night | 55°F | Partly Cloudy | 1 to 5 mph NW | 3% |
| Thursday | 80°F | Sunny | 3 mph S | 2% |
| Thursday Night | 59°F | Mostly Clear | 2 mph S | 0% |
| Friday | 83°F | Sunny | 2 to 8 mph S | 4% |
| Friday Night | 63°F | Mostly Clear | 5 to 8 mph S | 14% |
| Saturday | 84°F | Mostly Sunny | 5 to 8 mph SW | 13% |
| Saturday Night | 68°F | Partly Cloudy then Chance Showers And Thunderstorms | 7 mph SW | 36% |
| Sunday | 85°F | Chance Showers And Thunderstorms | 6 to 9 mph W | 36% |
| Sunday Night | 66°F | Chance Showers And Thunderstorms | 5 to 8 mph SE | 45% |
| Monday | 84°F | Chance Rain Showers | 7 mph S | 45% |
| Monday Night | 67°F | Slight Chance Showers And Thunderstorms | 5 to 8 mph N | 34% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seneca, WI
Last spring frost
May 3
First fall frost
Oct 7
Growing season
156 days
Hardiness zone
5a
Explore more for Seneca, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Gays Mills, Wi (6.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.