Benton, IA Weather & Growing Conditions
Tonight
44°F
Cloudy
Cloudy. Low around 44, with temperatures rising to around 46 overnight. West northwest wind 12 to 16 mph, with gusts as high as 23 mph. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 44°F | Cloudy | 12 to 16 mph WNW | 13% |
| Wednesday | 52°F | Mostly Cloudy | 13 to 16 mph W | 12% |
| Wednesday Night | 40°F | Mostly Cloudy | 7 to 10 mph W | 5% |
| Thursday | 53°F | Chance Rain Showers | 8 to 12 mph NW | 33% |
| Thursday Night | 39°F | Mostly Cloudy | 7 mph NNW | 10% |
| Friday | 53°F | Partly Sunny | 3 to 7 mph N | 5% |
| Friday Night | 34°F | Mostly Cloudy | 2 mph NNW | 0% |
| Saturday | 57°F | Mostly Sunny | 1 to 5 mph WSW | 3% |
| Saturday Night | 37°F | Mostly Clear | 3 mph W | 5% |
| Sunday | 62°F | Sunny | 6 mph W | 3% |
| Sunday Night | 39°F | Mostly Clear | 5 mph SW | 0% |
| Monday | 66°F | Sunny | 5 to 12 mph SW | 0% |
| Monday Night | 41°F | Mostly Clear | 6 mph WNW | 0% |
| Tuesday | 65°F | Sunny | 6 mph NE | 0% |
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 Nov 4, 2026.