WorkWindow

Outdoor Project Weather in San Ramon, CA

One forecast, six label checks. Today's verdict for every task in San Ramon loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Mt Diablo Junction, 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 — Aug, Jul, Sep Stain a Deck in San Ramon →
Exterior Painting — Aug, Jul, Sep Paint Outside in San Ramon →
Driveway Sealing — Aug, Jul, Sep Seal a Driveway in San Ramon →
Concrete Pouring — Aug, Jul, Sep Pour Concrete in San Ramon →
Roof Coating — Aug, Jul, Sep Coat a Roof in San Ramon →
Lawn Seeding — Jan, Mar, May Seed a Lawn in San Ramon →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for MT DIABLO JUNCTION, CA US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 20 18 21 23 27 29 30 31 29 27 23 20
Exterior Painting 20 18 21 23 27 29 30 31 29 27 23 20
Driveway Sealing 0 0 0 0 11 29 30 31 29 27 1 0
Concrete Pouring 20 18 21 23 27 29 30 31 29 27 23 20
Roof Coating 20 18 21 23 27 29 30 31 29 27 23 20
Lawn Seeding 31 29 31 30 31 30 31 31 30 31 30 31

The composite season in San Ramon opens around May 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 Ramon (366 workable days a year), then work down the matrix.

Full 10-day checks

California

Climatology: NOAA 1991–2020 normals via MT DIABLO JUNCTION, CA US (13.0 km from San Ramon center); live outlook by Open-Meteo.