Colesburg, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Colesburg, a city in Clayton County, Iowa.
Overnight
62°F
Showers And Thunderstorms Likely
Showers and thunderstorms likely before 4am, then patchy fog and occasional showers and thunderstorms. Cloudy. Low around 62, with temperatures rising to around 65 overnight. East wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
7-day forecast for Colesburg
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 62°F | Showers And Thunderstorms Likely | 10 mph E | 92% |
| Saturday | 76°F | Patchy Fog | 5 to 10 mph S | 84% |
| Saturday Night | 60°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph N | 82% |
| Sunday | 66°F | Chance Rain Showers | 10 to 15 mph NE | 35% |
| Sunday Night | 54°F | Chance Rain Showers | 15 mph NE | 31% |
| Monday | 62°F | Chance Rain Showers | 15 mph NE | 31% |
| Monday Night | 48°F | Chance Rain Showers | 10 to 15 mph NE | 26% |
| Tuesday | 61°F | Chance Rain Showers then Partly Sunny | 10 to 15 mph NE | 26% |
| Tuesday Night | 45°F | Partly Cloudy | 5 to 10 mph NE | 3% |
| Wednesday | 64°F | Sunny | 5 to 10 mph NE | 1% |
| Wednesday Night | 49°F | Partly Cloudy | 5 mph NE | 2% |
| Thursday | 66°F | Mostly Sunny | 5 mph NE | 8% |
| Thursday Night | 52°F | Partly Cloudy | 0 to 5 mph E | 5% |
| Friday | 68°F | Mostly Sunny | 0 to 5 mph E | 6% |
Forecast source: National Weather Service (api.weather.gov) for Colesburg (42.639, -91.201). Updated through the day.
Growing snapshot for Colesburg
Last spring frost
Apr 21
First fall frost
Oct 18
Growing season
178 days
Hardiness zone
5a
More local growing data for Colesburg: nearby ZIP 52035 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Clayton
Edgewood
Elkader
Elkport
Farmersburg
Garber
Garnavillo
Guttenberg
Luana
Marquette
McGregor
North Buena Vista
Osterdock
St. Olaf
Strawberry Point
Volga
Climate data from the nearest NOAA station, Guttenberg L&D 10, Ia (9.1 mi from Colesburg). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.