Benton, IA Weather & Growing Conditions
Today
83°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Partly sunny. High near 83, with temperatures falling to around 80 in the afternoon. Southwest wind 3 to 9 mph. Chance of precipitation is 40%. 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 | 3 to 9 mph SW | 38% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 7 mph N | 58% |
| Sunday | 68°F | Chance Rain Showers then Chance Showers And Thunderstorms | 8 to 12 mph NNE | 49% |
| Sunday Night | 58°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 12 mph NE | 55% |
| Monday | 61°F | Showers And Thunderstorms Likely | 12 mph NE | 55% |
| Monday Night | 52°F | Chance Rain Showers then Mostly Cloudy | 6 to 10 mph NE | 44% |
| Tuesday | 59°F | Partly Sunny | 9 mph NE | 7% |
| Tuesday Night | 46°F | Partly Cloudy | 2 to 7 mph ENE | 4% |
| Wednesday | 63°F | Mostly Sunny | 5 mph ENE | 2% |
| Wednesday Night | 51°F | Partly Cloudy | 3 mph E | 7% |
| Thursday | 66°F | Slight Chance Rain Showers | 5 mph ESE | 23% |
| Thursday Night | 56°F | Mostly Cloudy then Slight Chance Rain Showers | 3 mph ESE | 22% |
| Friday | 67°F | Slight Chance Rain Showers | 6 mph ESE | 22% |
| Friday Night | 57°F | Mostly Cloudy | 5 mph ESE | 13% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Benton, IA
Last spring frost
Apr 25
First fall frost
Oct 12
Growing season
169 days
Hardiness zone
5b
Explore more for Benton, IA: full frost dates · planting calendar · Iowa frost dates
Climate data from the nearest NOAA station, Mt Ayr, Ia (7 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.