Seymour, WI Weather & Growing Conditions
Tonight
55°F
Showers And Thunderstorms
Rain showers likely before 1am, then showers and thunderstorms. Cloudy, with a low around 55. East wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Showers And Thunderstorms | 8 mph E | 86% |
| Saturday | 63°F | Showers And Thunderstorms | 12 mph E | 86% |
| Saturday Night | 52°F | Rain Showers Likely | 10 mph NE | 69% |
| Sunday | 67°F | Partly Sunny | 10 to 14 mph NE | 9% |
| Sunday Night | 49°F | Mostly Cloudy | 9 to 13 mph NE | 1% |
| Monday | 61°F | Mostly Cloudy | 9 to 13 mph NE | 4% |
| Monday Night | 45°F | Mostly Cloudy | 9 mph NE | 4% |
| Tuesday | 62°F | Partly Sunny | 7 to 12 mph NE | 4% |
| Tuesday Night | 46°F | Partly Cloudy | 7 mph NE | 5% |
| Wednesday | 65°F | Mostly Sunny | 5 to 8 mph NE | 5% |
| Wednesday Night | 47°F | Partly Cloudy | 5 mph NE | 3% |
| Thursday | 69°F | Mostly Sunny | 5 mph NE | 5% |
| Thursday Night | 49°F | Partly Cloudy | 2 mph ENE | 4% |
| Friday | 71°F | Mostly Sunny | 3 mph N | 4% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Seymour, WI
Last spring frost
May 1
First fall frost
Oct 11
Growing season
160 days
Hardiness zone
5a
Explore more for Seymour, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Green Bay Wfo, Wi (10.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.