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Helena city, MT

ZIP 59625 — Climate & Environment

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

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 59625

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 Helena city, MT as Relatively Low (composite score 71.2), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (92.8) and flood (64.6). 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
71.2
Flood risk
64.6
Wildfire risk
92.8
Earthquake risk
86.8
Tornado risk
8.9
Winter weather risk
98.1
Hail risk
10.2
Air Quality (EPA AQI)

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

45
Median AQI
65.4%
Good Days

Air quality healthy to breathe

0.0%
Unhealthy / Hazardous

Sensitive groups or worse

Climate & Weather in ZIP Code 59625

Climate normals for Helena city, MT show limited published climate normals on US5. 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

No monthly temperature data

Climate Data
Hardiness Zone
N/A
Annual Snow Days
N/A
Annual Precipitation
N/A
FEMA NRI rating
Relatively Low

Climate & Environment key statistics

Risk & Air Quality statistics
Risk & Air Quality
NRI ratingRelatively Low
NRI risk index71.2
Flood risk (NRI)64.6
Wildfire risk (NRI)92.8
IRS net migration8
Median AQI45
Good AQI days65.4%