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City guide · Washington

Outdoor Project Weather in Renton, WA

This page runs Renton's forecast against all six task rulesets at once. Verdicts load live above; the month-by-month matrix below — built from NOAA 1991–2020 normals — shows when each job's season opens. Lawn Seeding gets the most calendar here: 288 workable days a year.

Six tasks · one forecast · Washington

JulyBest overall month
Lawn SeedingFriendliest task
1,018 task-daysWorkable task-days/yr
6Tasks tracked
Average of all six tasks

Today at a glance

Verdicts load live from the 10-day forecast; without JavaScript this column stays blank and the year-round matrix below still answers the planning question.
Task	Today	Best months here	Full 10-day check
Deck Staining	—	Jul, Aug, Jun	Stain a Deck in Renton →
Exterior Painting	—	Jul, Aug, Jun	Paint Outside in Renton →
Driveway Sealing	—	Jul, Aug, Jun	Seal a Driveway in Renton →
Concrete Pouring	—	Jul, Aug, Jun	Pour Concrete in Renton →
Roof Coating	—	Jul, Aug, Jun	Coat a Roof in Renton →
Lawn Seeding	—	Mar, May, Jul	Seed a Lawn in Renton →

City-to-city context helps: browse outdoor project weather in Pasco, WA one stop back, or continue to Seattle, WA’s project calendar.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for RENTON MUNI AP, WA US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	0	0	5	16	19	21	26	26	21	16	7	0
Exterior Painting	0	0	5	16	19	21	26	26	21	16	7	0
Driveway Sealing	0	0	0	0	7	21	26	26	21	1	0	0
Concrete Pouring	0	0	5	16	19	21	26	26	21	16	7	0
Roof Coating	0	0	5	16	19	21	26	26	21	16	7	0
Lawn Seeding	0	18	31	30	31	30	31	31	30	31	25	0

Which task gets the most weather in Renton?

Lawn Seeding288days/yr
Deck Staining157days/yr
Exterior Painting157days/yr
Concrete Pouring157days/yr
Roof Coating157days/yr
Driveway Sealing102days/yr

Season edges differ by task — that's the point of checking six at once. In Renton the earliest opener starts around February and the last holdout closes after November. A week that fails the paint rules on humidity can still pass seeding, and a frost that ends concrete season leaves sealing untouched until nights slip under 50°F.

If you only open one full check, make it lawn seeding — Renton's longest season at 288 workable days.

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Full 10-day checks

Washington

Climatology: NOAA 1991–2020 normals via RENTON MUNI AP, WA US (2.5 km from Renton center); live outlook by Open-Meteo.