Portland, Maine

114 freeze nights, a housing stock that runs on heating oil, and a waterfront economy that goes quiet in winter and searches for vendors when it does.

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Portland, Maine records a January daily high of just 33.7°F and a heating season that runs from late October through April, giving the metro one of the longest cold windows of any US city in its population range. Pre-1940 housing dominates the peninsula and surrounding suburbs, keeping heating oil delivery, furnace repair, and now heat pump installation under Efficiency Maine rebate programs at the center of the local trades economy. The working waterfront adds a marine layer, with boat repair, rigging, and commercial fishing supply businesses that depend on search visibility to reach boating-season customers and the off-season refit planners who research vendors during the long Maine winter.

Climate context

Portland, Maine averages 114 freeze nights per year and a January daily high of just 33.7°F, a winter profile that drives heating, frozen-pipe, and weatherization demand from November through April and concentrates emergency service calls in the first sustained cold snap of each season.

Note: long heating season November through April with sustained sub-freezing stretches and nor'easter wind and ice risk affects local service demand patterns.

Local market data

What the Portland climate means for local businesses.

79.8°F
Avg July daily high
Source: NOAA ASOS
5
Days above 90°F per year
10-year avg · NOAA
114
Freeze nights per year
10-year avg · NOAA
33.7°F
Avg January daily high
Source: NOAA ASOS
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