Renton, WA Weather & Growing Conditions
Today
87°F
Areas Of Smoke
Areas of smoke after 10am. Sunny, with a high near 87. North wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 87°F | Areas Of Smoke | 5 to 8 mph N | 0% |
| Tonight | 61°F | Areas Of Smoke | 2 to 8 mph N | 0% |
| Wednesday | 92°F | Patchy Smoke | 2 to 7 mph N | 0% |
| Wednesday Night | 63°F | Mostly Clear | 1 to 7 mph NNE | 0% |
| Thursday | 92°F | Sunny | 1 to 6 mph WSW | 0% |
| Thursday Night | 63°F | Mostly Clear | 2 to 6 mph W | 0% |
| Friday | 89°F | Sunny | 5 mph SW | 0% |
| Friday Night | 62°F | Mostly Clear | 1 to 6 mph N | 0% |
| Saturday | 85°F | Sunny | 1 to 5 mph WSW | 0% |
| Saturday Night | 60°F | Mostly Clear | 2 to 7 mph NE | 1% |
| Sunday | 80°F | Mostly Sunny | 3 mph WSW | 1% |
| Sunday Night | 59°F | Mostly Clear | 3 mph N | 1% |
| Monday | 79°F | Mostly Sunny | 5 mph WNW | 1% |
| Monday Night | 59°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 13
First fall frost
Nov 16
Growing season
248 days
Hardiness zone
9a
Explore more for Renton, WA: full frost dates · planting calendar · Washington frost dates
Climate data from the nearest NOAA station, Renton Muni Ap, Wa (1.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.