Pasco, WA Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Pasco, a city in Benton County, Washington.
Tonight
31°F
Patchy Fog
Patchy fog. Mostly clear. Low around 31, with temperatures rising to around 36 overnight. Southeast wind 0 to 3 mph.
7-day forecast for Pasco
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 31°F | Patchy Fog | 0 to 3 mph SE | 1% |
| Wednesday | 53°F | Patchy Fog then Sunny | 1 mph SE | 1% |
| Wednesday Night | 35°F | Chance Rain Showers | 0 to 7 mph S | 42% |
| Thursday | 59°F | Slight Chance Rain Showers then Mostly Sunny | 8 mph SW | 18% |
| Thursday Night | 33°F | Partly Cloudy | 0 to 6 mph S | 3% |
| Friday | 56°F | Mostly Cloudy | 0 to 5 mph S | 3% |
| Friday Night | 35°F | Mostly Cloudy | 0 to 5 mph S | 3% |
| Saturday | 58°F | Mostly Sunny | 0 to 5 mph NW | 1% |
| Saturday Night | 36°F | Mostly Cloudy | 5 mph SW | 9% |
| Sunday | 60°F | Mostly Cloudy | 5 to 8 mph SW | 9% |
| Sunday Night | 35°F | Mostly Cloudy | 2 to 6 mph SW | 2% |
| Monday | 55°F | Partly Sunny | 2 mph NW | 5% |
| Monday Night | 35°F | Slight Chance Rain Showers | 2 mph SW | 16% |
| Tuesday | 59°F | Slight Chance Rain Showers | 3 mph S | 16% |
Forecast source: National Weather Service (api.weather.gov) for Pasco (46.266, -119.121). Updated through the day.
Growing snapshot for Pasco
Last spring frost
Mar 28
First fall frost
Oct 30
Growing season
216 days
Hardiness zone
7b
More local growing data for Pasco: nearby ZIP 99336 weather · frost dates · planting calendar · Washington frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Kennewick, Wa (3.6 mi from Pasco). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.