Casco, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Casco, a village in Kewaunee County, Wisconsin.
Today
63°F
Rain Showers
Rain showers and areas of fog. Mostly cloudy. High near 63, with temperatures falling to around 57 in the afternoon. South wind around 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Casco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 63°F | Rain Showers | 14 mph S | 81% |
| Tonight | 45°F | Chance Rain Showers | 12 mph SW | 48% |
| Thursday | 52°F | Rain Showers Likely | 8 to 15 mph WNW | 59% |
| Thursday Night | 34°F | Chance Rain Showers | 13 to 16 mph N | 48% |
| Friday | 45°F | Chance Rain Showers | 10 to 16 mph N | 34% |
| Friday Night | 31°F | Mostly Cloudy | 5 to 9 mph N | 1% |
| Saturday | 47°F | Sunny | 6 mph WNW | 0% |
| Saturday Night | 32°F | Partly Cloudy | 3 to 8 mph W | 5% |
| Sunday | 53°F | Mostly Sunny | 8 to 13 mph W | 9% |
| Sunday Night | 32°F | Mostly Clear | 5 to 8 mph W | 1% |
| Monday | 56°F | Mostly Sunny | 5 to 12 mph WSW | 0% |
| Monday Night | 37°F | Partly Cloudy | 9 mph W | 3% |
| Tuesday | 55°F | Mostly Sunny | 6 to 10 mph WNW | 8% |
| Tuesday Night | 34°F | Partly Cloudy | 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Casco (44.555, -87.620). Updated through the day.
Growing snapshot for Casco
Last spring frost
May 1
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
5b
More local growing data for Casco: nearby ZIP 54205 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kewaunee, Wi (12 mi from Casco). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.