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City guide · Massachusetts

Outdoor Project Weather in Cambridge, MA

One forecast, six label checks. Today's verdict for every task in Cambridge loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Boston Logan Intl Ap, Ma Us. The friendliest calendar here belongs to lawn seeding (235 workable days a year).

Six tasks · one forecast · Massachusetts

AugustBest overall month
Lawn SeedingFriendliest task
886 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	—	Aug, Jul, Sep	Stain a Deck in Cambridge →
Exterior Painting	—	Aug, Jul, Sep	Paint Outside in Cambridge →
Driveway Sealing	—	Aug, Jul, Sep	Seal a Driveway in Cambridge →
Concrete Pouring	—	Aug, Jul, Sep	Pour Concrete in Cambridge →
Roof Coating	—	Aug, Jul, Sep	Coat a Roof in Cambridge →
Lawn Seeding	—	May, Jul, Aug	Seed a Lawn in Cambridge →

Keep the tour going — compare this calendar with Brockton, MA behind you or Fall River, MA up next.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for BOSTON LOGAN INTL AP, MA US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	0	0	0	10	19	19	21	22	21	21	5	0
Exterior Painting	0	0	0	10	19	19	21	22	21	21	5	0
Driveway Sealing	0	0	0	0	11	19	21	22	21	5	0	0
Concrete Pouring	0	0	0	10	19	19	21	22	21	21	5	0
Roof Coating	0	0	0	10	19	19	21	22	21	21	5	0
Lawn Seeding	0	0	1	30	31	30	31	31	30	31	20	0

Which task gets the most weather in Cambridge?

Lawn Seeding235days/yr
Deck Staining138days/yr
Exterior Painting138days/yr
Concrete Pouring138days/yr
Roof Coating138days/yr
Driveway Sealing99days/yr

The composite season in Cambridge opens around April and closes after November: 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 Cambridge (235 workable days a year), then work down the matrix.

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Full 10-day checks

Massachusetts

Climatology: NOAA 1991–2020 normals via BOSTON LOGAN INTL AP, MA US (9.1 km from Cambridge center); live outlook by Open-Meteo.