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Concrete Pouring Weather in Michigan: Best Months by City

Concrete Pouring season in Michigan, city by city: peak months, season boundaries, and annual workable-day counts from NOAA 1991–2020 normals. Detroit leads with 126 workable days a year; Ann Arbor runs the shortest at 100.

Across Michigan's 19 listed cities, annual workable days for concrete pouring run from 100 (Ann Arbor) up to 126 (Detroit). Every number comes from NOAA 1991–2020 normals scored against the same label ruleset; every city name links to its live 10-day check.

Statewide, July is the strongest month — it tops or ties the table in most listed cities. The live strips on each city page decide the week; this table decides the month. Scoring rules: methodology; the national playbook: the concrete pouring guide.

Cities in Michigan

Peak months and season boundaries from NOAA 1991–2020 normals; season = months with at least 8 workable days.
CityPeak monthsSeasonWorkable days/yr
Detroit Aug, Jul, Sep May–October 126
Grand Rapids Jul, Aug, Sep May–October 107
Lansing Aug, Jul, Sep May–October 122
Ann Arbor Aug, Jul, Sep May–September 100
Flint Jul, Aug, Sep May–October 113
Kalamazoo Jul, Aug, Jun May–October 112
Muskegon Aug, Jul, Sep May–October 123
South Lyon Aug, Jul, Sep May–October 104
Warren Aug, Jul, Sep May–October 126
Sterling Heights Aug, Jul, Sep May–October 118
Saginaw Jul, Aug, Sep May–October 118
Dearborn Aug, Jul, Sep May–October 119
Holland Jul, Aug, Jun May–October 115
Livonia Aug, Jul, Sep May–October 111
Troy Aug, Jul, Sep May–October 118
Westland Aug, Sep, Jul May–October 125
Farmington Hills Aug, Jul, Sep May–October 111
Jackson Jul, Aug, Sep May–October 118
Port Huron Aug, Jul, Sep May–October 123

The rules behind these numbers

Typical label thresholds for concrete pouring — the single ruleset used by every check on this page.
CheckThresholdWhy it matters
Air temperature 40–90°F — ideal 50–85°F DIY pours work from 40–90°F; 50–85°F is the sweet spot.
Overnight low ≥40°F during the first 48 h A low under 40°F inside the first 48 hours puts you in cold-weather concreting — not a DIY window.
Dry before no soaking (≥1.0") in the prior 24 h Rain before the pour only matters if the ground is soaked or standing in water.
Dry after <0.1" rain for 6 h after (12 h light rain after finishing still risks surface marks) A downpour in the first 6 hours can wash the surface; after final set, rain actually helps curing.
Wind ≤20 mph (rapid surface drying up to 28 mph) Hot wind pulls bleed water out faster than the slab can handle.

Always follow your product label — formulas vary. The table above is the typical range across major manufacturers, not a promise about your can.

Other tasks in Michigan

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