Address reportCitiesFlorida › Altamonte Springs

Altamonte Springs, FL

Earthquake hazard, typical weather and growing season from public federal data. Population 42,150.

Flood zone: it depends on the exact parcel

There is no such thing as a flood zone for a whole city. Two houses on the same street can sit in different zones, and it is the single fact here that changes most over a short distance. So this page does not guess one.

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Earthquake hazard very-low

Design category A

Very low seismic hazard. Damaging earthquakes are rare at this location and design ground motions are minimal. Ordinary buildings carry essentially no special seismic-detailing requirement. The ASCE 7 Seismic Design Category here is A. (Short-period design value Ss ≈ 0.063 g — the standard headline measure of ground-shaking hazard.)

USGS Seismic Design Web Services (ASCE 7), assuming Site Class D — stiff or unknown soil. Real soil conditions can move the category either way.

Typical weather

91.8° in July, 49.2° in January

Thirty-year averages, not a forecast. Any individual year can differ substantially.

MonthHighLowRainSnow
Jan70.1°49.2°2.77"0"
Feb72.8°51.5°2.51"0"
Mar77.2°55.6°3.17"0"
Apr82.1°60.9°2.54"0"
May87.1°66.8°3.44"0"
Jun90.3°72.3°8.16"0"
Jul91.8°74.2°8.19"0"
Aug91.6°74.5°8.14"0"
Sep89°73.4°6.35"0"
Oct83.9°67.1°4.26"0"
Nov77.3°58.8°2.01"0"
Dec72.3°52.9°2.49"0"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station SANFORD, FL US, 11.7 mi away.

Growing season zone 10a

365 frost-free days

Last spring frost around n/a, first fall frost around n/a. Roughly half of years see frost outside that window.

2023 USDA Plant Hardiness Zone Map and NOAA/NCEI 1991–2020 frost normals.

What this page does not tell you

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