Address reportCitiesOregon › Springfield

Springfield, OR

Earthquake hazard, typical weather and growing season from public federal data. Population 60,177.

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.

Look up a specific Springfield address →

Earthquake hazard high

Design category D

High seismic hazard. Strong ground shaking is expected over the life of a building. Substantial seismic-resistant design, detailing, and inspection are required by code. The ASCE 7 Seismic Design Category here is D. (Short-period design value Ss ≈ 0.672 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

80° in August, 36.9° in December

Heads up: the nearest station with a full 30-year record is LOOKOUT PT DAM, OR US, about 16 miles from here. Treat these as regional rather than local — terrain, elevation and water can change a lot in that distance.

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

MonthHighLowRainSnow
Jan46.9°37.1°6.06"0.4"
Feb50.3°37.8°4.64"0.2"
Mar54.2°39.8°5.14"0"
Apr58.5°42.5°4.83"0"
May64.9°46.7°3.52"0"
Jun70.8°50.7°2.04"0"
Jul79.8°54.7°0.51"0"
Aug80°54.5°0.56"0"
Sep74.2°52.2°1.63"0"
Oct62.8°47.2°3.65"0"
Nov52°41.5°6.41"0"
Dec46°36.9°7.04"0"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station LOOKOUT PT DAM, OR US, 16 mi away.

Growing season zone 8b

196 frost-free days

Last spring frost around April 11, first fall frost around October 23. 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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