Henderson, IA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Henderson, a city in Mills County, Iowa.
Today
83°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm, then showers and thunderstorms likely. Partly sunny. High near 83, with temperatures falling to around 80 in the afternoon. North wind 5 to 13 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Henderson
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 5 to 13 mph N | 73% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Patchy Smoke | 8 to 14 mph NNE | 90% |
| Wednesday | 74°F | Chance Showers And Thunderstorms then Showers And Thunderstorms | 10 mph NE | 84% |
| Wednesday Night | 58°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 2 to 8 mph ENE | 24% |
| Thursday | 81°F | Mostly Sunny | 2 to 6 mph E | 1% |
| Thursday Night | 63°F | Mostly Clear | 5 mph SE | 8% |
| Friday | 86°F | Mostly Sunny | 5 to 9 mph S | 8% |
| Friday Night | 68°F | Mostly Clear | 8 mph S | 6% |
| Saturday | 90°F | Sunny | 5 to 15 mph S | 1% |
| Saturday Night | 73°F | Mostly Clear | 12 to 15 mph S | 9% |
| Sunday | 92°F | Mostly Sunny | 10 to 15 mph S | 8% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms | 15 mph SSE | 20% |
| Monday | 92°F | Slight Chance Showers And Thunderstorms then Mostly Sunny | 13 to 17 mph S | 15% |
| Monday Night | 73°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 12 to 17 mph SE | 24% |
Forecast source: National Weather Service (api.weather.gov) for Henderson (41.140, -95.430). Updated through the day.
Growing snapshot for Henderson
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
174 days
Hardiness zone
5b
More local growing data for Henderson: nearby ZIP 51541 weather · frost dates · planting calendar · Iowa frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Oakland, Ia (11.5 mi from Henderson). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.