Colo, IA Weather & Growing Conditions
Tonight
60°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of drizzle. Mostly cloudy. Low around 60, with temperatures rising to around 63 overnight. North wind around 9 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 60°F | Chance Showers And Thunderstorms | 9 mph N | 48% |
| Sunday | 64°F | Chance Drizzle | 13 mph NE | 38% |
| Sunday Night | 56°F | Chance Drizzle then Rain Showers Likely | 13 mph NE | 55% |
| Monday | 59°F | Rain Showers | 12 mph NE | 81% |
| Monday Night | 51°F | Rain Showers | 7 to 10 mph NE | 79% |
| Tuesday | 59°F | Slight Chance Rain Showers then Partly Sunny | 8 mph NE | 17% |
| Tuesday Night | 47°F | Partly Cloudy | 6 mph ENE | 4% |
| Wednesday | 64°F | Mostly Sunny | 5 mph ENE | 1% |
| Wednesday Night | 52°F | Partly Cloudy | 3 mph E | 7% |
| Thursday | 66°F | Slight Chance Rain Showers | 3 mph SE | 18% |
| Thursday Night | 57°F | Slight Chance Rain Showers | 2 mph ESE | 21% |
| Friday | 68°F | Slight Chance Rain Showers then Mostly Cloudy | 5 mph E | 20% |
| Friday Night | 58°F | Mostly Cloudy | 3 mph E | 8% |
| Saturday | 69°F | Chance Rain Showers | 3 to 7 mph SE | 29% |
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 Sep 20, 2026.