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Portland city, ME

ZIP 04103 — Climate & Environment

Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.

Middle ClassLow Snow AreaRemote Work Hub

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 04103

Disaster Risk (FEMA NRI)

County-linked natural hazard risk from FEMA National Risk Index — useful for comparing insurance and disaster exposure.

FEMA’s National Risk Index rates natural-hazard risk for Portland city, ME as Relatively Low (composite score 77.0), which is elevated versus much of the country. The strongest component scores on US5 are hurricane (90.7) and flood (72.3). These scores are county-linked NRI values published for planning context — all ZIP codes in the same county share the same composite score on US5. Useful when comparing insurance and disaster exposure across areas, not a substitute for a parcel-level flood or fire determination.

Overall rating
Relatively Low
Risk index
77.0
Flood risk
72.3
Wildfire risk
38.9
Hurricane risk
90.7
Earthquake risk
81.1
Tornado risk
25.5
Winter weather risk
99.0
Hail risk
76.0
Air Quality (EPA AQI)

County-level annual air quality from EPA. Good days = healthy to breathe; unhealthy = sensitive groups or worse.

39
Median AQI
74.0%
Good Days

Air quality healthy to breathe

1.6%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 04103

Climate normals for Portland city, ME show little to no average snow and around 48.1 inches of annual precipitation. Pair that with FEMA NRI hazard context (overall rating Relatively Low) when evaluating long-term housing and insurance exposure.

7-day weather forecast

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Sunrise, sunset & moon

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Monthly Temperature

30-year climate normals (avg. monthly temperature)

Climate Data
Hardiness Zone
6a
Annual Snow Days
0
Annual Precipitation
48.12 in
FEMA NRI rating
Relatively Low

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone6a
Annual precip (in)48.12
Snow days0
Broadband access91.8%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingRelatively Low
NRI risk index77.0
Flood risk (NRI)72.3
Wildfire risk (NRI)38.9
Hurricane risk (NRI)90.7
IRS net migration1439
Median AQI39
Good AQI days74.0%