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Simms CDP, MT

ZIP 59477 — Climate & Environment

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

Middle ClassLow Snow Area

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 59477

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 Simms CDP, MT as Relatively Moderate (composite score 83.1), which is elevated versus much of the country. The strongest component scores on US5 are wildfire (84.2) and flood (83.4). 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 Moderate
Risk index
83.1
Flood risk
83.4
Wildfire risk
84.2
Earthquake risk
71.8
Tornado risk
20.8
Winter weather risk
99.3
Hail risk
53.4

Climate & Weather in ZIP Code 59477

Climate normals for Simms CDP, MT show little to no average snow and around 13.3 inches of annual precipitation. Pair that with FEMA NRI hazard context (overall rating Relatively Moderate) 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
4b
Annual Snow Days
0
Annual Precipitation
13.34 in
FEMA NRI rating
Relatively Moderate

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone4b
Annual precip (in)13.34
Snow days0
Broadband access100.0%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingRelatively Moderate
NRI risk index83.1
Flood risk (NRI)83.4
Wildfire risk (NRI)84.2
IRS net migration17