Seymour, WI Weather & Growing Conditions
Overnight
59°F
Rain Showers
Rain showers and patchy fog. Cloudy. Low around 59, with temperatures rising to around 61 overnight. South southeast wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 59°F | Rain Showers | 9 mph SSE | 88% |
| Wednesday | 64°F | Rain Showers | 9 to 13 mph S | 79% |
| Wednesday Night | 46°F | Rain Showers Likely | 8 to 13 mph SW | 58% |
| Thursday | 54°F | Rain Showers Likely | 8 to 13 mph WNW | 73% |
| Thursday Night | 34°F | Mostly Cloudy | 14 mph N | 10% |
| Friday | 46°F | Slight Chance Rain Showers then Partly Sunny | 5 to 14 mph N | 20% |
| Friday Night | 28°F | Partly Cloudy | 3 mph NNW | 0% |
| Saturday | 49°F | Sunny | 5 mph WNW | 0% |
| Saturday Night | 31°F | Mostly Clear | 2 to 7 mph W | 5% |
| Sunday | 55°F | Sunny | 7 to 10 mph W | 8% |
| Sunday Night | 32°F | Mostly Clear | 6 mph W | 0% |
| Monday | 57°F | Mostly Sunny | 3 to 10 mph WSW | 0% |
| Monday Night | 37°F | Partly Cloudy | 8 mph W | 1% |
| Tuesday | 57°F | Mostly Sunny then Slight Chance Rain Showers | 5 to 8 mph WNW | 15% |
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 Nov 4, 2026.