Colo, IA Weather & Growing Conditions
This Afternoon
49°F
Slight Chance Rain Showers
A slight chance of rain showers. Cloudy, with a high near 49. West wind around 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 49°F | Slight Chance Rain Showers | 14 mph W | 15% |
| Tonight | 42°F | Chance Rain Showers | 12 mph W | 28% |
| Thursday | 51°F | Chance Rain Showers then Cloudy | 13 mph NW | 28% |
| Thursday Night | 37°F | Mostly Cloudy | 6 to 9 mph N | 2% |
| Friday | 48°F | Mostly Sunny | 6 mph NNE | 1% |
| Friday Night | 28°F | Partly Cloudy | 2 mph NNE | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 5 mph SW | 0% |
| Saturday Night | 34°F | Mostly Clear | 3 mph WSW | 0% |
| Sunday | 60°F | Sunny | 3 mph W | 0% |
| Sunday Night | 37°F | Clear | 3 mph SW | 0% |
| Monday | 65°F | Sunny | 3 to 9 mph SSW | 0% |
| Monday Night | 40°F | Clear | 5 mph W | 0% |
| Tuesday | 62°F | Sunny | 3 mph NNW | 1% |
| Tuesday Night | 41°F | Partly Cloudy | 2 mph N | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Colo, IA
Last spring frost
Apr 24
First fall frost
Oct 12
Growing season
170 days
Hardiness zone
5a
Explore more for Colo, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Colo, Ia (1.2 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.