WorkWindow

Outdoor Project Weather in San Jose, CA

One forecast, six label checks. Today's verdict for every task in San Jose loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at San Jose, Ca Us. The friendliest calendar here belongs to lawn seeding (366 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 San Jose →
Exterior Painting — Jul, Aug, Sep Paint Outside in San Jose →
Driveway Sealing — Jul, Aug, Sep Seal a Driveway in San Jose →
Concrete Pouring — Jul, Aug, Sep Pour Concrete in San Jose →
Roof Coating — Jul, Aug, Sep Coat a Roof in San Jose →
Lawn Seeding — Jan, Mar, May Seed a Lawn in San Jose →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for SAN JOSE, CA US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 21 18 21 24 27 29 31 31 29 28 23 21
Exterior Painting 21 18 21 24 27 29 31 31 29 28 23 21
Driveway Sealing 0 0 0 10 27 29 31 31 29 28 2 0
Concrete Pouring 21 18 21 24 27 29 31 31 29 28 23 21
Roof Coating 21 18 21 24 27 29 31 31 29 28 23 21
Lawn Seeding 31 29 31 30 31 30 31 31 30 31 30 31

The composite season in San Jose opens around April and closes after October: coatings wait on warm nights, concrete on freeze-free 48-hour stretches, seeding on the 55–80°F germination band. Between those bookends, the right question is which task fits this week — which is what the verdicts above answer.

Deepest calendar first: start with lawn seeding in San Jose (366 workable days a year), then work down the matrix.

Full 10-day checks

California

Climatology: NOAA 1991–2020 normals via SAN JOSE, CA US (9.4 km from San Jose center); live outlook by Open-Meteo.