Benton, IA Weather & Growing Conditions
This Afternoon
84°F
Mostly Sunny
Mostly sunny. High near 84, with temperatures falling to around 82 in the afternoon. West southwest wind 7 to 10 mph, with gusts as high as 20 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 84°F | Mostly Sunny | 7 to 10 mph WSW | 14% |
| Tonight | 63°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 3 to 7 mph N | 67% |
| Sunday | 68°F | Chance Showers And Thunderstorms | 7 to 12 mph NNE | 44% |
| Sunday Night | 58°F | Showers And Thunderstorms Likely | 8 to 12 mph NE | 64% |
| Monday | 61°F | Rain Showers Likely | 12 mph NE | 64% |
| 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.