US5.com
  1. Home
  2. States
  3. Iowa
  4. ZIP 50241
  5. Climate & Environment
St. Marys city, IA

ZIP 50241 — Climate & Environment

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

Middle Class

Climate, disaster risk, air quality, and environmental safety

Environment & Risk in ZIP Code 50241

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 St. Marys city, IA as Very Low (composite score 36.1), which is relatively lower than many U.S. communities. The strongest component scores on US5 are wildfire (59.4) and flood (35.9). 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
Very Low
Risk index
36.1
Flood risk
35.9
Wildfire risk
59.4
Hurricane risk
7.6
Earthquake risk
20.6
Tornado risk
65.9
Winter weather risk
25.7
Hail risk
49.2

Climate & Weather in ZIP Code 50241

Climate normals for St. Marys city, IA show limited published climate normals on US5. Pair that with FEMA NRI hazard context (overall rating Very Low) when evaluating long-term housing and insurance exposure.

7-day weather forecast

Loading live forecast…

Sunrise, sunset & moon

Loading outdoor timing for St. Marys city, IA (ZIP 50241)…

Monthly Temperature

No monthly temperature data

Climate Data
Hardiness Zone
5b
Annual Snow Days
N/A
Annual Precipitation
N/A
FEMA NRI rating
Very Low

Climate & Environment key statistics

Climate statistics
Climate
Hardiness zone5b
Broadband access90.4%
Risk & Air Quality statistics
Risk & Air Quality
NRI ratingVery Low
NRI risk index36.1
Flood risk (NRI)35.9
Wildfire risk (NRI)59.4
Hurricane risk (NRI)7.6
IRS net migration6