Frost Dates for San Leandro, California, United States of America

Coordinates: 37.725, -122.155

Growing Season

The last spring air frost in San Leandro, California, United States of America typically occurs around Mar 28, and the first autumn air frost around Nov 9. This gives a frost-free growing season of approximately 226 days.

USDA Hardiness Zone

This location falls in USDA Hardiness Zone 9b, where the average annual extreme minimum temperature is -3.9 to -1.1°C (25 to 30°F). This zone rating helps gardeners determine which perennial plants are likely to survive winter.

Temperature Overview

The coldest month is January, with an average low of 7°C (45°F). The warmest month is September, with an average high of 25°C (77°F).

Frost Risk Breakdown

Frost dates at three temperature thresholds: Air frost (0°C / 32°F): Mar 28 (last spring) to Nov 9 (first autumn).

We predict your growing zone to be approximately ...

USDA Growing Zone
USDA Growing Zone - 9b

... and the frost data for your area is ...

Current Risk Level: Unlikely (Safest)

for today based on past data only.

We predict a frost free growing season at your location from Mar 28 to Nov 9, which provides approximately 225 frost free days.

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
  • Air Frost possible
  • Safest (unlikely)
First and last frost dates by frost type
FirstLast
Air FrostNov 9Mar 28
Light Ground FrostUnlikelyUnlikely
Hard Ground FrostUnlikelyUnlikely

Frost Dates for San Leandro, California, United States of America | FrostDates.com