South Pasadena, CA 90031 Frost Dates
Frost dates for South Pasadena, CA, ZIP 90031
The NOAA station nearest to 90031 does not report a usable frost-date normal for either event, so no last-frost or first-frost figure is shown here. The USDA hardiness zone below is still real: Zone 10b (35 to 40°F average annual minimum).
How South Pasadena compares
About 365 days separate South Pasadena's last and first frost, putting it 1,159 of 40,283 ZIP codes nationally. Within CA, it ranks 492 of 2,555.
Learn more
the methodology explains exactly which NOAA and USDA figures feed 90031's numbers, and zone vs. frost date explains why Zone 10b and South Pasadena's frost date answer different questions.