Frost Dates for Colma, CA

Based on data from San Francisco Oceanside weather station, 4 miles away

Frost Dates

Last Spring Frost (50%) iA 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide. December 30
First Fall Frost (50%) iA 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date. December 25

This location has a nearly year-round growing season with a brief frost risk period in winter.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

30% Probability iOnly a 30% chance of frost remaining by this date. Use these dates for a safer planting window, especially for tender plants sensitive to cold.

Last Spring Frost January 23
First Fall Frost December 12
37.68°N, -122.46°W © OpenStreetMap

Growing Season

360 Days December 30 to December 25

USDA Hardiness Zone iHardiness zones indicate which perennial plants can survive winter in your area. For annual vegetables, frost dates and growing season length matter more than hardiness zone.

Zone 10a

Avg. annual minimum: 30 to 35°F (−1 to 2°C)

Learn more

Köppen Climate iThe Köppen climate classification system categorizes climates based on temperature and precipitation patterns.

Csb Warm-Summer Mediterranean

Warm, dry summers and mild, wet winters. Similar to hot-summer Mediterranean but cooler. Great for a wide range of vegetables and fruit trees with moderate water needs.

Köppen climate map

Temperature

40° 50° 60° 70°
52°
High: 59°F
Avg: 52°F
Low: 46°F
Jan
54°
High: 60°F
Avg: 54°F
Low: 47°F
Feb
54°
High: 61°F
Avg: 54°F
Low: 48°F
Mar
55°
High: 60°F
Avg: 55°F
Low: 49°F
Apr
55°
High: 60°F
Avg: 55°F
Low: 51°F
May
57°
High: 61°F
Avg: 57°F
Low: 53°F
Jun
58°
High: 62°F
Avg: 58°F
Low: 54°F
Jul
60°
High: 64°F
Avg: 60°F
Low: 55°F
Aug
60°
High: 65°F
Avg: 60°F
Low: 55°F
Sep
60°
High: 66°F
Avg: 60°F
Low: 53°F
Oct
57°
High: 64°F
Avg: 57°F
Low: 50°F
Nov
53°
High: 59°F
Avg: 53°F
Low: 46°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 2" 4" 6" 6.7"
6.2"
6.17"
Jan
6.7"
6.70"
Feb
5.4"
5.36"
Mar
3.6"
3.59"
Apr
1.7"
1.70"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
1.5"
1.50"
Oct
5.0"
5.03"
Nov
5.8"
5.76"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:10 AM – 4:50 PM · 9h 40m
Feb: 6:42 AM – 5:18 PM · 10h 36m
Mar: 6:09 AM – 5:51 PM · 11h 43m
Apr: 5:31 AM – 6:29 PM · 12h 59m
May: 4:59 AM – 7:01 PM · 14h 02m
Jun: 4:42 AM – 7:18 PM · 14h 36m
Jul: 4:49 AM – 7:11 PM · 14h 22m
Aug: 5:16 AM – 6:44 PM · 13h 28m
Sep: 5:53 AM – 6:07 PM · 12h 14m
Oct: 6:30 AM – 5:30 PM · 10h 60m
Nov: 7:02 AM – 4:58 PM · 9h 55m
Dec: 7:18 AM – 4:42 PM · 9h 24m
Daylight Longest: 14h 37m · Shortest: 9h 23m

Nearby Stations

San Francisco Dwtn, CA Pacifica 4 Sse, CA January 11 - January 10 San Francisco Intl AP, CA December 29 - December 26 Oakland Museum, CA Richmond, CAJanuary 4 - January 2 Oakland Metro Intl AP, CA January 7 - December 23

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