WorkWindow

Outdoor Project Weather in Baltimore, MD

This page runs Baltimore'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: 204 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 — Oct, Sep, Aug Stain a Deck in Baltimore →
Exterior Painting — Oct, Sep, Aug Paint Outside in Baltimore →
Driveway Sealing — Sep, Aug, May Seal a Driveway in Baltimore →
Concrete Pouring — Oct, Sep, Aug Pour Concrete in Baltimore →
Roof Coating — Oct, Sep, Aug Coat a Roof in Baltimore →
Lawn Seeding — May, Oct, Mar Seed a Lawn in Baltimore →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for MD SCI CTR BALTIMORE, MD US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 0 0 7 19 20 19 8 22 22 22 17 0
Exterior Painting 0 0 7 19 20 19 8 22 22 22 17 0
Driveway Sealing 0 0 0 6 20 19 8 22 22 16 0 0
Concrete Pouring 0 0 7 19 20 19 8 22 22 22 17 0
Roof Coating 0 0 7 19 20 19 8 22 22 22 17 0
Lawn Seeding 0 0 30 30 31 13 0 1 30 31 30 8

Season edges differ by task — that's the point of checking six at once. In Baltimore 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 — Baltimore's longest season at 204 workable days.

Full 10-day checks

Maryland

Climatology: NOAA 1991–2020 normals via MD SCI CTR BALTIMORE, MD US (2.7 km from Baltimore center); live outlook by Open-Meteo.