Benton City, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Benton City, a city in Benton County, Washington.
Overnight
35°F
Patchy Fog
Patchy fog. Mostly clear, with a low around 35. Southwest wind around 2 mph.
7-day forecast for Benton City
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 35°F | Patchy Fog | 2 mph SW | 1% |
| Wednesday | 55°F | Patchy Fog then Sunny | 2 mph S | 1% |
| Wednesday Night | 39°F | Chance Rain Showers | 2 to 6 mph SW | 41% |
| Thursday | 61°F | Mostly Sunny | 3 to 7 mph SW | 9% |
| Thursday Night | 37°F | Partly Cloudy | 0 to 3 mph S | 3% |
| Friday | 58°F | Mostly Cloudy | 0 to 5 mph S | 5% |
| Friday Night | 39°F | Mostly Cloudy | 0 to 3 mph SW | 5% |
| Saturday | 59°F | Mostly Sunny | 1 to 5 mph N | 1% |
| Saturday Night | 40°F | Mostly Cloudy | 1 to 8 mph W | 3% |
| Sunday | 62°F | Partly Sunny | 5 to 10 mph SW | 3% |
| Sunday Night | 40°F | Mostly Cloudy | 1 to 5 mph W | 1% |
| Monday | 57°F | Partly Sunny | 2 mph N | 6% |
| Monday Night | 39°F | Mostly Cloudy then Slight Chance Rain Showers | 2 mph W | 15% |
| Tuesday | 60°F | Slight Chance Rain Showers | 3 mph SW | 17% |
Forecast source: National Weather Service (api.weather.gov) for Benton City (46.264, -119.479). Updated through the day.
Growing snapshot for Benton City
Last spring frost
Apr 6
First fall frost
Oct 24
Growing season
200 days
Hardiness zone
7b
More local growing data for Benton City: nearby ZIP 99320 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Richland, Wa (11.6 mi from Benton City). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.