Duncombe, IA Weather & Growing Conditions
Tonight
66°F
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Showers and thunderstorms likely before midnight, then a chance of showers and thunderstorms. Cloudy. Low around 66, with temperatures rising to around 68 overnight. South southeast wind 7 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 66°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 7 to 10 mph SSE | 56% |
| Saturday | 77°F | Chance Showers And Thunderstorms then Patchy Fog | 6 to 9 mph WNW | 39% |
| Saturday Night | 59°F | Slight Chance Rain Showers | 10 mph N | 22% |
| Sunday | 67°F | Chance Rain Showers | 14 mph NE | 33% |
| Sunday Night | 54°F | Chance Rain Showers | 12 mph ENE | 33% |
| Monday | 61°F | Rain Showers Likely | 12 mph ENE | 60% |
| Monday Night | 49°F | Rain Showers Likely | 6 to 9 mph ENE | 60% |
| Tuesday | 61°F | Mostly Cloudy | 8 mph ENE | 13% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 6 mph E | 2% |
| Wednesday | 65°F | Mostly Sunny | 5 mph ESE | 2% |
| Wednesday Night | 50°F | Partly Cloudy | 2 mph SE | 8% |
| Thursday | 68°F | Slight Chance Rain Showers | 3 mph SSE | 19% |
| Thursday Night | 53°F | Mostly Cloudy | 2 mph SE | 8% |
| Friday | 69°F | Partly Sunny | 1 to 5 mph ESE | 9% |
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 Sep 19, 2026.