WorkWindow

Outdoor Project Weather in Hillsboro, OR

This page runs Hillsboro'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: 266 workable days a year.

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.
TaskTodayBest months hereFull 10-day check
Deck Staining — Jul, Aug, Sep Stain a Deck in Hillsboro →
Exterior Painting — Jul, Aug, Sep Paint Outside in Hillsboro →
Driveway Sealing — Jul, Aug, Jun Seal a Driveway in Hillsboro →
Concrete Pouring — Jul, Aug, Sep Pour Concrete in Hillsboro →
Roof Coating — Jul, Aug, Sep Coat a Roof in Hillsboro →
Lawn Seeding — May, Jul, Aug Seed a Lawn in Hillsboro →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for PORTLAND-HILLSBORO AP, OR US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 0 0 0 4 19 22 27 27 22 11 0 0
Exterior Painting 0 0 0 4 19 22 27 27 22 11 0 0
Driveway Sealing 0 0 0 0 0 2 27 27 1 0 0 0
Concrete Pouring 0 0 0 4 19 22 27 27 22 11 0 0
Roof Coating 0 0 0 4 19 22 27 27 22 11 0 0
Lawn Seeding 0 0 28 30 31 30 31 31 30 31 24 0

Season edges differ by task — that's the point of checking six at once. In Hillsboro 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 — Hillsboro's longest season at 266 workable days.

Full 10-day checks

Oregon

Climatology: NOAA 1991–2020 normals via PORTLAND-HILLSBORO AP, OR US (2.7 km from Hillsboro center); live outlook by Open-Meteo.