Duncombe, IA Weather & Growing Conditions
Today
77°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 74 in the afternoon. North northwest wind around 10 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 |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms | 10 mph NNW | 88% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 57% |
| Wednesday | 75°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 5 mph NNE | 15% |
| Wednesday Night | 53°F | Mostly Clear | 3 mph ESE | 3% |
| Thursday | 81°F | Sunny | 0 to 5 mph SSE | 1% |
| Thursday Night | 59°F | Mostly Clear | 5 mph SSE | 1% |
| Friday | 84°F | Sunny | 5 to 10 mph S | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 9 mph S | 24% |
| Saturday | 88°F | Sunny | 3 to 13 mph S | 12% |
| Saturday Night | 69°F | Mostly Clear then Slight Chance Showers And Thunderstorms | 9 to 13 mph SSE | 17% |
| Sunday | 88°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 10 mph SSE | 17% |
| Sunday Night | 68°F | Slight Chance Showers And Thunderstorms | 10 mph SSE | 32% |
| Monday | 87°F | Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 13 mph SSE | 32% |
| Monday Night | 69°F | Mostly Cloudy then Chance Showers And Thunderstorms | 8 to 13 mph E | 31% |
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 Aug 4, 2026.