Casco, WI Weather & Growing Conditions
Overnight
55°F
Rain Showers Likely
Rain showers likely. Cloudy, with a low around 55. East southeast wind around 8 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 55°F | Rain Showers Likely | 8 mph ESE | 58% |
| Saturday | 62°F | Rain Showers Likely | 9 to 13 mph ESE | 69% |
| Saturday Night | 53°F | Rain Showers Likely | 10 mph NE | 60% |
| Sunday | 66°F | Mostly Sunny | 12 to 16 mph NNE | 7% |
| Sunday Night | 49°F | Mostly Cloudy | 10 to 14 mph NE | 0% |
| Monday | 61°F | Mostly Cloudy | 10 to 15 mph ENE | 0% |
| Monday Night | 47°F | Mostly Cloudy | 8 to 13 mph ENE | 1% |
| Tuesday | 62°F | Mostly Sunny | 8 to 14 mph ENE | 0% |
| Tuesday Night | 47°F | Mostly Clear | 7 to 12 mph ENE | 2% |
| Wednesday | 63°F | Mostly Sunny | 7 to 12 mph ENE | 3% |
| Wednesday Night | 48°F | Partly Cloudy | 3 to 8 mph NE | 1% |
| Thursday | 66°F | Mostly Sunny | 3 to 9 mph NE | 1% |
| Thursday Night | 48°F | Partly Cloudy | 2 to 6 mph NE | 2% |
| Friday | 69°F | Mostly Sunny | 3 to 7 mph NE | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Casco, WI
Last spring frost
May 1
First fall frost
Oct 18
Growing season
168 days
Hardiness zone
5b
Explore more for Casco, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Kewaunee, Wi (12 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.