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City guide · Washington

Outdoor Project Weather in Olympia, WA

This page runs Olympia'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: 243 workable days a year.

Six tasks · one forecast · Washington

JulyBest overall month
Lawn SeedingFriendliest task
783 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 Olympia →
Exterior Painting	—	Jul, Aug, Jun	Paint Outside in Olympia →
Driveway Sealing	—	Jul, Aug	Seal a Driveway in Olympia →
Concrete Pouring	—	Jul, Aug, Jun	Pour Concrete in Olympia →
Roof Coating	—	Jul, Aug, Jun	Coat a Roof in Olympia →
Lawn Seeding	—	May, Jul, Aug	Seed a Lawn in Olympia →

Keep the tour going — compare this calendar with Marysville, WA behind you or Pasco, WA up next.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for OLYMPIA AP, WA US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	0	0	0	0	19	22	26	26	22	10	0	0
Exterior Painting	0	0	0	0	19	22	26	26	22	10	0	0
Driveway Sealing	0	0	0	0	0	0	21	19	0	0	0	0
Concrete Pouring	0	0	0	0	19	22	26	26	22	10	0	0
Roof Coating	0	0	0	0	19	22	26	26	22	10	0	0
Lawn Seeding	0	0	12	30	31	30	31	31	30	31	17	0

Which task gets the most weather in Olympia?

Lawn Seeding243days/yr
Deck Staining125days/yr
Exterior Painting125days/yr
Concrete Pouring125days/yr
Roof Coating125days/yr
Driveway Sealing40days/yr

Season edges differ by task — that's the point of checking six at once. In Olympia the earliest opener starts around March 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 — Olympia's longest season at 243 workable days.

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Full 10-day checks

Washington

Climatology: NOAA 1991–2020 normals via OLYMPIA AP, WA US (7.6 km from Olympia center); live outlook by Open-Meteo.