Henderson, IA Weather & Growing Conditions
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 northeast 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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 5 to 13 mph NNE | 73% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Patchy Smoke | 8 to 14 mph NNE | 90% |
| Wednesday | 74°F | Showers And Thunderstorms | 10 mph NE | 84% |
| Wednesday Night | 58°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 to 9 mph ENE | 25% |
| Thursday | 81°F | Mostly Sunny | 2 to 6 mph E | 2% |
| Thursday Night | 63°F | Mostly Clear | 5 mph SE | 8% |
| Friday | 86°F | 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 | 91°F | Mostly Sunny | 10 to 15 mph S | 8% |
| Sunday Night | 73°F | Slight Chance Showers And Thunderstorms | 16 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). Updated through the day.
Growing snapshot for Henderson, IA
Last spring frost
Apr 23
First fall frost
Oct 14
Growing season
174 days
Hardiness zone
5b
Explore more for Henderson, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Oakland, Ia (11.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.