Duncombe, IA Weather & Growing Conditions
Tonight
44°F
Rain Showers
Rain showers. Cloudy. Low around 44, with temperatures rising to around 46 overnight. Northwest wind 10 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Rain Showers | 10 to 14 mph NW | 91% |
| Wednesday | 51°F | Chance Rain Showers | 13 to 16 mph W | 38% |
| Wednesday Night | 41°F | Rain Showers Likely | 13 mph WNW | 59% |
| Thursday | 51°F | Rain Showers Likely | 13 mph NW | 62% |
| Thursday Night | 37°F | Mostly Cloudy | 6 to 10 mph N | 12% |
| Friday | 51°F | Partly Sunny | 6 mph N | 0% |
| Friday Night | 32°F | Mostly Cloudy | 2 mph SSE | 0% |
| Saturday | 56°F | Mostly Sunny | 1 to 5 mph SW | 2% |
| Saturday Night | 36°F | Partly Cloudy | 3 mph W | 3% |
| Sunday | 60°F | Sunny | 6 mph W | 6% |
| Sunday Night | 38°F | Mostly Clear | 6 mph SW | 2% |
| Monday | 64°F | Sunny | 6 to 10 mph WSW | 0% |
| Monday Night | 40°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 62°F | Mostly Sunny | 6 mph WNW | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Duncombe, IA
Last spring frost
May 3
First fall frost
Oct 2
Growing season
150 days
Hardiness zone
5a
Explore more for Duncombe, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Webster City, Ia (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.