Harman US

Richland, WA Weather & Growing Conditions

This Afternoon
53°F
Mostly Cloudy
Mostly cloudy. High near 53, with temperatures falling to around 48 in the afternoon. Southwest wind around 3 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 53°F Mostly Cloudy 3 mph SW 2%
Tonight 37°F Partly Cloudy 2 to 6 mph SW 2%
Wednesday 54°F Patchy Fog then Sunny 3 mph S 2%
Wednesday Night 42°F Chance Rain Showers 2 to 7 mph S 30%
Thursday 59°F Mostly Sunny 7 mph SW 8%
Thursday Night 41°F Partly Cloudy 5 mph S 10%
Friday 57°F Mostly Cloudy 2 to 6 mph S 10%
Friday Night 42°F Mostly Cloudy 1 to 6 mph SW 4%
Saturday 58°F Partly Sunny 1 to 5 mph NW 0%
Saturday Night 43°F Mostly Cloudy 2 to 8 mph W 8%
Sunday 61°F Partly Sunny 6 to 10 mph SW 11%
Sunday Night 42°F Mostly Cloudy 2 to 6 mph W 9%
Monday 56°F Mostly Cloudy 2 mph NW 7%
Monday Night 42°F Mostly Cloudy then Chance Rain Showers 3 mph SW 27%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Richland, WA

Last spring frost
Apr 6
First fall frost
Oct 24
Growing season
200 days
Hardiness zone
7b

Explore more for Richland, WA: full frost dates · planting calendar · Washington frost dates

Climate data from the nearest NOAA station, Richland, Wa (4.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.