Underwood, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Underwood, a city in Pottawattamie County, Iowa.
Overnight
68°F
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 68. South southeast wind around 3 mph. Chance of precipitation is 20%.
7-day forecast for Underwood
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 68°F | Slight Chance Showers And Thunderstorms | 3 mph SSE | 15% |
| Tuesday | 80°F | Chance Showers And Thunderstorms | 3 to 13 mph N | 48% |
| Tuesday Night | 61°F | Patchy Smoke | 7 to 13 mph NNE | 86% |
| Wednesday | 73°F | Patchy Smoke then Showers And Thunderstorms Likely | 8 mph NE | 59% |
| Wednesday Night | 57°F | Mostly Clear | 2 to 7 mph ENE | 5% |
| Thursday | 81°F | Sunny | 1 to 7 mph ESE | 1% |
| Thursday Night | 63°F | Mostly Clear | 6 mph SSE | 5% |
| Friday | 86°F | Sunny | 5 to 10 mph S | 5% |
| Friday Night | 68°F | Mostly Clear | 8 mph SSE | 6% |
| Saturday | 91°F | Sunny | 6 to 15 mph S | 2% |
| Saturday Night | 72°F | Mostly Clear | 12 to 15 mph S | 9% |
| Sunday | 92°F | Mostly Sunny | 10 to 15 mph SSE | 7% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms | 15 mph S | 24% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 16 mph S | 18% |
Forecast source: National Weather Service (api.weather.gov) for Underwood (41.380, -95.683). Updated through the day.
Growing snapshot for Underwood
Last spring frost
Apr 18
First fall frost
Oct 21
Growing season
185 days
Hardiness zone
5b
More local growing data for Underwood: nearby ZIP 51576 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
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Neola
Oakland
Treynor
Walnut
Weston
Climate data from the nearest NOAA station, Omaha Eppley Airfield, Ne (10.8 mi from Underwood). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.