WorkWindow

Outdoor Project Weather in Alhambra, CA

This page runs Alhambra'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. Deck Staining gets the most calendar here: 333 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 — Aug, Jul, Sep Stain a Deck in Alhambra →
Exterior Painting — Aug, Jul, Sep Paint Outside in Alhambra →
Driveway Sealing — Aug, Jul, Sep Seal a Driveway in Alhambra →
Concrete Pouring — Aug, Jul, Sep Pour Concrete in Alhambra →
Roof Coating — Aug, Jul, Sep Coat a Roof in Alhambra →
Lawn Seeding — Jan, Mar, May Seed a Lawn in Alhambra →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for SAN GABRIEL FIRE DEPT, CA US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 25 22 26 27 29 29 31 31 30 29 27 26
Exterior Painting 25 22 26 27 29 29 31 31 30 29 27 26
Driveway Sealing 0 0 19 27 29 29 31 31 30 29 17 0
Concrete Pouring 25 22 26 27 29 29 31 31 30 29 27 26
Roof Coating 25 22 26 27 29 29 31 31 30 29 27 26
Lawn Seeding 31 29 31 30 31 30 6 0 7 31 30 31

Season edges differ by task — that's the point of checking six at once. In Alhambra 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 deck staining — Alhambra's longest season at 333 workable days.

Full 10-day checks

California

Climatology: NOAA 1991–2020 normals via SAN GABRIEL FIRE DEPT, CA US (3.2 km from Alhambra center); live outlook by Open-Meteo.