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City guide · Michigan

Outdoor Project Weather in Ann Arbor, MI

One forecast, six label checks. Today's verdict for every task in Ann Arbor loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Ann Arbor Se, Mi Us. The friendliest calendar here belongs to lawn seeding (194 workable days a year).

Six tasks · one forecast · Michigan

JulyBest overall month
Lawn SeedingFriendliest task
664 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 Ann Arbor →
Exterior Painting	—	Aug, Jul, Sep	Paint Outside in Ann Arbor →
Driveway Sealing	—	Aug, Jul, Jun	Seal a Driveway in Ann Arbor →
Concrete Pouring	—	Aug, Jul, Sep	Pour Concrete in Ann Arbor →
Roof Coating	—	Aug, Jul, Sep	Coat a Roof in Ann Arbor →
Lawn Seeding	—	May, Jul, Aug	Seed a Lawn in Ann Arbor →

City-to-city context helps: browse outdoor project weather in Worcester, MA one stop back, or continue to Dearborn, MI’s project calendar.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for ANN ARBOR SE, MI US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	0	0	0	0	16	18	20	20	19	7	0	0
Exterior Painting	0	0	0	0	16	18	20	20	19	7	0	0
Driveway Sealing	0	0	0	0	2	18	20	20	10	0	0	0
Concrete Pouring	0	0	0	0	16	18	20	20	19	7	0	0
Roof Coating	0	0	0	0	16	18	20	20	19	7	0	0
Lawn Seeding	0	0	0	12	31	30	31	31	30	29	0	0

Which task gets the most weather in Ann Arbor?

Lawn Seeding194days/yr
Deck Staining100days/yr
Exterior Painting100days/yr
Concrete Pouring100days/yr
Roof Coating100days/yr
Driveway Sealing70days/yr

The composite season in Ann Arbor 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 Ann Arbor (194 workable days a year), then work down the matrix.

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Full 10-day checks

Michigan

Climatology: NOAA 1991–2020 normals via ANN ARBOR SE, MI US (4.9 km from Ann Arbor center); live outlook by Open-Meteo.