WorkWindow

Outdoor Project Weather in San Bernardino, CA

One forecast, six label checks. Today's verdict for every task in San Bernardino loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Redlands, Ca Us. The friendliest calendar here belongs to lawn seeding (242 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, May, Nov Stain a Deck in San Bernardino →
Exterior Painting — Oct, May, Nov Paint Outside in San Bernardino →
Driveway Sealing — May, Oct, Jun Seal a Driveway in San Bernardino →
Concrete Pouring — Oct, May, Nov Pour Concrete in San Bernardino →
Roof Coating — Oct, May, Nov Coat a Roof in San Bernardino →
Lawn Seeding — Jan, Mar, May Seed a Lawn in San Bernardino →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for REDLANDS, CA US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 24 21 25 26 28 18 0 0 7 28 26 12
Exterior Painting 24 21 25 26 28 18 0 0 7 28 26 12
Driveway Sealing 0 0 0 2 28 18 0 0 7 26 0 0
Concrete Pouring 24 21 25 26 28 18 0 0 7 28 26 12
Roof Coating 24 21 25 26 28 18 0 0 7 28 26 12
Lawn Seeding 31 29 31 30 31 5 0 0 0 24 30 31

The composite season in San Bernardino opens around May and closes after June: 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 Bernardino (242 workable days a year), then work down the matrix.

Full 10-day checks

California

Climatology: NOAA 1991–2020 normals via REDLANDS, CA US (14.8 km from San Bernardino center); live outlook by Open-Meteo.