Duncombe, IA Weather & Growing Conditions
Today
76°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms between 1pm and 2pm, then a chance of showers and thunderstorms between 2pm and 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Mostly cloudy. High near 76, with temperatures falling to around 74 in the afternoon. Northwest wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 76°F | Patchy Fog | 6 to 9 mph NW | 38% |
| Tonight | 59°F | Slight Chance Rain Showers | 10 mph N | 22% |
| Sunday | 66°F | Chance Drizzle | 14 mph NE | 33% |
| Sunday Night | 54°F | Chance Rain Showers | 12 mph ENE | 49% |
| Monday | 62°F | Chance Rain Showers | 12 mph ENE | 50% |
| Monday Night | 49°F | Chance Rain Showers | 5 to 9 mph ENE | 49% |
| Tuesday | 61°F | Partly Sunny | 7 mph ENE | 9% |
| Tuesday Night | 45°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Wednesday | 66°F | Sunny | 5 mph E | 1% |
| Wednesday Night | 50°F | Partly Cloudy | 3 mph ESE | 8% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 mph SE | 17% |
| Thursday Night | 53°F | Mostly Cloudy | 3 mph ESE | 9% |
| Friday | 70°F | Partly Sunny | 2 to 6 mph ESE | 9% |
| Friday Night | 55°F | Mostly Cloudy | 5 mph SE | 10% |
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.