Colo, IA Weather & Growing Conditions
Overnight
44°F
Chance Rain Showers
A chance of rain showers. Cloudy. Low around 44, with temperatures rising to around 46 overnight. West northwest wind around 10 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 44°F | Chance Rain Showers | 10 mph WNW | 28% |
| Wednesday | 51°F | Chance Rain Showers | 12 to 15 mph W | 30% |
| Wednesday Night | 44°F | Cloudy then Chance Rain Showers | 13 mph W | 26% |
| Thursday | 54°F | Rain Showers Likely then Cloudy | 12 mph NW | 63% |
| Thursday Night | 39°F | Mostly Cloudy | 6 to 9 mph N | 9% |
| Friday | 49°F | Mostly Sunny | 3 to 7 mph NNE | 5% |
| Friday Night | 30°F | Partly Cloudy | 2 mph NNE | 0% |
| Saturday | 52°F | Mostly Sunny | 0 to 3 mph SW | 0% |
| Saturday Night | 35°F | Mostly Clear | 3 mph W | 1% |
| Sunday | 58°F | Sunny | 5 mph W | 1% |
| Sunday Night | 37°F | Clear | 3 mph SW | 0% |
| Monday | 64°F | Sunny | 3 to 8 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 63°F | Sunny | 3 mph NNW | 0% |
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.