Duncombe, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Duncombe, a city in Webster County, Iowa.
Today
77°F
Showers And Thunderstorms
Showers and thunderstorms. Mostly cloudy. High near 77, with temperatures falling to around 74 in the afternoon. North wind around 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Duncombe
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 77°F | Showers And Thunderstorms | 10 mph N | 89% |
| Tonight | 58°F | Showers And Thunderstorms Likely | 3 to 8 mph N | 57% |
| Wednesday | 75°F | Partly Sunny | 5 mph NNE | 14% |
| Wednesday Night | 53°F | Mostly Clear | 3 mph ESE | 2% |
| Thursday | 81°F | Sunny | 1 to 5 mph SSE | 1% |
| Thursday Night | 59°F | Mostly Clear | 6 mph SSE | 1% |
| Friday | 84°F | Sunny | 5 to 10 mph S | 7% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph S | 24% |
| Saturday | 88°F | Sunny | 5 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 | 12 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 | 68°F | Mostly Cloudy then Chance Showers And Thunderstorms | 8 to 14 mph E | 31% |
Forecast source: National Weather Service (api.weather.gov) for Duncombe (42.470, -93.997). Updated through the day.
Growing snapshot for Duncombe
Last spring frost
May 3
First fall frost
Oct 2
Growing season
150 days
Hardiness zone
5a
More local growing data for Duncombe: nearby ZIP 50532 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
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Otho
Vincent
Climate data from the nearest NOAA station, Webster City, Ia (10.4 mi from Duncombe). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.