Renton, WA Weather & Growing Conditions
Today
87°F
Areas Of Smoke
Areas of smoke after 10am. Sunny, with a high near 87. North wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Areas Of Smoke | 3 to 8 mph N | 0% |
| Tonight | 61°F | Areas Of Smoke | 2 to 7 mph N | 0% |
| Wednesday | 92°F | Patchy Smoke | 2 to 6 mph N | 0% |
| Wednesday Night | 62°F | Mostly Clear | 1 to 6 mph NNE | 0% |
| Thursday | 92°F | Sunny | 1 to 5 mph WNW | 0% |
| Thursday Night | 63°F | Mostly Clear | 5 mph W | 0% |
| Friday | 88°F | Sunny | 5 mph SW | 0% |
| Friday Night | 61°F | Mostly Clear | 1 to 6 mph NNW | 0% |
| Saturday | 85°F | Sunny | 1 to 5 mph WSW | 0% |
| Saturday Night | 59°F | Mostly Clear | 2 to 7 mph N | 1% |
| Sunday | 80°F | Mostly Sunny | 3 mph WSW | 1% |
| Sunday Night | 58°F | Mostly Clear | 3 mph N | 1% |
| Monday | 79°F | Mostly Sunny | 5 mph WNW | 1% |
| Monday Night | 58°F | Partly Cloudy | 5 mph NNE | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Renton, WA
Last spring frost
Mar 20
First fall frost
Nov 10
Growing season
233 days
Hardiness zone
9a
Explore more for Renton, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Kent, Wa (2.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.