Frost Dates for Dublin, CA

Based on data from Livermore weather station, 7 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. February 15
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 2
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 February 28
First Fall Frost November 25

Hard Freeze (28°F)

Last Spring Hard Freeze January 10
First Fall Hard Freeze December 18
37.70°N, -121.94°W © OpenStreetMap

Growing Season

291 Days February 15 to December 2

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 9b

Avg. annual minimum: 25 to 30°F (−4 to −1°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

30° 50° 70° 90°
48°
High: 57°F
Avg: 48°F
Low: 39°F
Jan
51°
High: 61°F
Avg: 51°F
Low: 41°F
Feb
55°
High: 66°F
Avg: 55°F
Low: 43°F
Mar
58°
High: 71°F
Avg: 58°F
Low: 46°F
Apr
63°
High: 77°F
Avg: 63°F
Low: 50°F
May
69°
High: 84°F
Avg: 69°F
Low: 54°F
Jun
73°
High: 89°F
Avg: 73°F
Low: 57°F
Jul
73°
High: 89°F
Avg: 73°F
Low: 57°F
Aug
70°
High: 86°F
Avg: 70°F
Low: 55°F
Sep
64°
High: 77°F
Avg: 64°F
Low: 50°F
Oct
54°
High: 65°F
Avg: 54°F
Low: 43°F
Nov
48°
High: 57°F
Avg: 48°F
Low: 39°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 5.0"
4.9"
4.88"
Jan
4.7"
4.67"
Feb
4.4"
4.38"
Mar
3.2"
3.17"
Apr
1.8"
1.77"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
1.1"
1.06"
Oct
3.8"
3.79"
Nov
5.0"
4.97"
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 27m
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 56m
Dec: 7:18 AM – 4:42 PM · 9h 24m
Daylight Longest: 14h 37m · Shortest: 9h 23m

Nearby Stations

Livermore Muni AP, CA February 27 - December 1 Mt Diablo Junction, CA March 8 - December 22 Tracy Pumping Plt, CA January 19 - December 10 Fremont, CA January 7 - December 22 Hayward Air Terminal, CA January 2 - December 25 Newark, CAJanuary 1 - December 27

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