Underwood, IA Weather & Growing Conditions
This Afternoon
78°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy. High near 78, with temperatures falling to around 75 in the afternoon. North northwest wind 6 to 9 mph. Chance of precipitation is 20%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 78°F | Slight Chance Showers And Thunderstorms | 6 to 9 mph NNW | 22% |
| Tonight | 61°F | Chance Showers And Thunderstorms | 10 mph N | 29% |
| Sunday | 64°F | Cloudy then Chance Rain Showers | 12 mph NNE | 40% |
| Sunday Night | 56°F | Rain Showers Likely | 7 to 10 mph NE | 59% |
| Monday | 58°F | Rain Showers Likely | 10 mph NE | 71% |
| Monday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 6 to 9 mph NE | 42% |
| Tuesday | 61°F | Mostly Cloudy | 7 mph NE | 4% |
| Tuesday Night | 48°F | Mostly Cloudy | 6 mph E | 2% |
| Wednesday | 63°F | Partly Sunny | 6 mph ESE | 3% |
| Wednesday Night | 53°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 7 mph SE | 22% |
| Thursday | 66°F | Chance Showers And Thunderstorms | 8 mph SSE | 33% |
| Thursday Night | 58°F | Slight Chance Rain Showers | 6 mph SE | 20% |
| Friday | 68°F | Slight Chance Rain Showers | 7 mph ESE | 22% |
| Friday Night | 60°F | Chance Rain Showers | 8 mph ESE | 27% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Underwood, IA
Last spring frost
Apr 18
First fall frost
Oct 21
Growing season
185 days
Hardiness zone
5b
Explore more for Underwood, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Omaha Eppley Airfield, Ne (10.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.