Underwood, IA Weather & Growing Conditions
Today
79°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2pm, then a chance of showers and thunderstorms between 2pm and 4pm, then a chance of showers and thunderstorms. Partly sunny. High near 79, with temperatures falling to around 77 in the afternoon. North wind 5 to 13 mph, with gusts as high as 18 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 79°F | Chance Showers And Thunderstorms | 5 to 13 mph N | 47% |
| Tonight | 61°F | Chance Showers And Thunderstorms then Patchy Smoke | 6 to 13 mph NNE | 84% |
| Wednesday | 73°F | Patchy Smoke then Showers And Thunderstorms Likely | 8 mph NE | 56% |
| Wednesday Night | 57°F | Mostly Clear | 2 to 7 mph E | 4% |
| Thursday | 81°F | Mostly Sunny | 2 to 6 mph ESE | 1% |
| Thursday Night | 63°F | Mostly Clear | 6 mph SE | 5% |
| Friday | 86°F | Sunny | 6 to 9 mph S | 5% |
| Friday Night | 68°F | Mostly Clear | 8 mph SSE | 5% |
| Saturday | 90°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 | 9 to 15 mph SSE | 6% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms | 15 mph SSE | 24% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 16 mph S | 18% |
| Monday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 16 mph SE | 23% |
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 Aug 4, 2026.