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Roof Coating Weather in North Carolina: Best Months by City

Roof Coating season in North Carolina, city by city: peak months, season boundaries, and annual workable-day counts from NOAA 1991–2020 normals. Wilmington leads with 183 workable days a year; Concord runs the shortest at 122.

North Carolina is not one climate: Wilmington banks 183 workable roof coating days a year while Concord gets 122 — a spread the table below itemizes month by month. Season boundaries mark the first and last month averaging 8+ workable days against the label rules (50–90°F, nights 40°F+).

If one month anchors the North Carolina calendar it's October, the statewide leader in workable days. Use this page to pick the month, then the city page's 10-day strip to pick the days — and the national roof coating guide for the physics behind each rule.

Cities in North Carolina

Peak months and season boundaries from NOAA 1991–2020 normals; season = months with at least 8 workable days.
CityPeak monthsSeasonWorkable days/yr
Charlotte Oct, Sep, May March–June 155
Raleigh Oct, Sep, May March–June 162
Winston-Salem Oct, Sep, Aug March–November 155
Durham Oct, Sep, Aug April–October 159
Greensboro Oct, Sep, Jul March–October 165
Fayetteville Oct, May, Sep March–June 146
Concord Oct, Sep, May April–June 122
Asheville Oct, Sep, May April–October 143
Wilmington Oct, Mar, Apr March–November 183
Hickory Oct, Sep, Aug March–October 159
Gastonia Oct, Sep, May March–June 153
Cary Oct, Sep, Aug March–November 161
High Point Oct, Sep, Aug March–November 170
Burlington May, Oct, Apr March–June 123
Greenville Oct, May, Sep March–June 148
Jacksonville Oct, Apr, Nov March–November 180

The rules behind these numbers

Typical label thresholds for roof coating — the single ruleset used by every check on this page.
CheckThresholdWhy it matters
Air temperature 50–90°F Acrylic and elastomeric coatings want 50°F+ during application and initial cure.
Overnight low ≥40°F during the first 24 h Water-based coatings can be ruined by a cold, damp night before they skin over.
Dry before ≤0.05" rain in the prior 24 h; watch back to 48 h The membrane must be dry — coatings trap moisture that later blisters.
Dry after <0.05" rain for 24 h after (48 h thick coats want 48 h) Rain inside 24 hours washes uncured coating into gutters.
Evening dew-point spread ≥5°F from 6–11 pm Roofs radiate heat at night and hit the dew point before anything else in the yard.
Daytime humidity ≤85% Humid air slows water-based coatings dramatically.
Wind ≤15 mph (roller only, no spray up to 20 mph) Wind on a roof is a safety limit first and an overspray limit second.

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

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