Address reportCitiesCalifornia › Rialto

Rialto, CA

Earthquake hazard, typical weather and growing season from public federal data. Population 101,910.

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 Rialto address →

Typical weather

96.6° in August, 43.2° in December

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

MonthHighLowRainSnow
Jan69.5°44.2°2.11"0"
Feb69.9°44.8°2.45"0"
Mar72.3°46.9°1.54"0"
Apr75.1°49.9°0.57"0"
May80.4°54.8°0.29"0"
Jun87.4°58.4°0.08"0"
Jul94.1°62.9°0.03"0"
Aug96.6°63.7°0.03"0"
Sep93.4°60.8°0.23"0"
Oct81.9°54.8°0.4"0"
Nov76.1°47.4°0.68"0"
Dec69.1°43.2°1.51"0"

NOAA/NCEI 1991–2020 U.S. Climate Normals — station RIVERSIDE CITRUS EXP, CA US, 10 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

Run the full report on an address →