Colby, WI Weather & Growing Conditions
Tonight
55°F
Rain Showers
Rain showers and areas of fog. Cloudy. Low around 55, with temperatures rising to around 57 overnight. Southeast wind around 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 55°F | Rain Showers | 9 mph SE | 77% |
| Wednesday | 60°F | Rain Showers | 8 to 12 mph S | 82% |
| Wednesday Night | 44°F | Rain Showers | 5 to 9 mph WSW | 78% |
| Thursday | 48°F | Rain Showers | 9 to 16 mph NNW | 76% |
| Thursday Night | 33°F | Slight Chance Rain Showers then Mostly Cloudy | 9 to 15 mph NNE | 15% |
| Friday | 45°F | Mostly Sunny | 5 to 12 mph N | 2% |
| Friday Night | 26°F | Partly Cloudy | 2 mph N | 1% |
| Saturday | 47°F | Mostly Sunny | 0 to 6 mph WSW | 0% |
| Saturday Night | 31°F | Partly Cloudy | 5 mph W | 12% |
| Sunday | 53°F | Slight Chance Rain Showers then Mostly Sunny | 5 to 10 mph WNW | 15% |
| Sunday Night | 32°F | Partly Cloudy | 6 mph WSW | 3% |
| Monday | 54°F | Mostly Sunny | 5 to 12 mph SW | 0% |
| Monday Night | 36°F | Partly Cloudy | 8 mph W | 0% |
| Tuesday | 52°F | Sunny | 7 to 10 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colby, WI
Last spring frost
May 13
First fall frost
Sep 26
Growing season
136 days
Hardiness zone
4b
Explore more for Colby, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Owen 1E, Wi (13.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.