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City guide · California

Outdoor Project Weather in Concord, CA

This page runs Concord'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: 309 workable days a year.

Six tasks · one forecast · California

MayBest overall month
Deck StainingFriendliest task
1,696 task-daysWorkable task-days/yr
6Tasks tracked
Average of all six tasks

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.
Task	Today	Best months here	Full 10-day check
Deck Staining	—	Jul, Aug, Jun	Stain a Deck in Concord →
Exterior Painting	—	Jul, Aug, Jun	Paint Outside in Concord →
Driveway Sealing	—	Jul, Aug, Jun	Seal a Driveway in Concord →
Concrete Pouring	—	Jul, Aug, Jun	Pour Concrete in Concord →
Roof Coating	—	Jul, Aug, Jun	Coat a Roof in Concord →
Lawn Seeding	—	Jan, Mar, May	Seed a Lawn in Concord →

Keep the tour going — compare this calendar with Compton, CA behind you or Corona, CA up next.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for CONCORD BUCHANAN FLD, CA US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	22	20	22	25	28	29	31	31	29	28	24	22
Exterior Painting	22	20	22	25	28	29	31	31	29	28	24	22
Driveway Sealing	0	0	0	5	28	29	31	31	29	24	0	0
Concrete Pouring	22	20	22	25	28	29	31	31	29	28	24	22
Roof Coating	22	20	22	25	28	29	31	31	29	28	24	22
Lawn Seeding	31	29	31	30	31	18	0	0	13	31	30	31

Which task gets the most weather in Concord?

Deck Staining311days/yr
Exterior Painting311days/yr
Concrete Pouring311days/yr
Roof Coating311days/yr
Lawn Seeding275days/yr
Driveway Sealing177days/yr

Season edges differ by task — that's the point of checking six at once. In Concord the earliest opener starts around May and the last holdout closes after October. 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 — Concord's longest season at 309 workable days.

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Full 10-day checks

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Climatology: NOAA 1991–2020 normals via CONCORD BUCHANAN FLD, CA US (5.0 km from Concord center); live outlook by Open-Meteo.