Frost Dates for Stanford, CA

Based on data from Palo Alto weather station, 2 miles away

Elevation: 75 ft

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 1
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 7
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 14
First Fall Frost December 1

Hard Freeze (28°F)

Last Spring Hard Freeze January 4
First Fall Hard Freeze December 22
37.42°N, -122.17°W © OpenStreetMap

Growing Season

310 Days February 1 to December 7

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 9a

Avg. annual minimum: 20 to 25°F (−7 to −4°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°
48°
High: 58°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: 44°F
Mar
58°
High: 70°F
Avg: 58°F
Low: 45°F
Apr
61°
High: 73°F
Avg: 61°F
Low: 50°F
May
66°
High: 79°F
Avg: 66°F
Low: 53°F
Jun
68°
High: 79°F
Avg: 68°F
Low: 56°F
Jul
67°
High: 79°F
Avg: 67°F
Low: 55°F
Aug
66°
High: 80°F
Avg: 66°F
Low: 53°F
Sep
61°
High: 74°F
Avg: 61°F
Low: 48°F
Oct
53°
High: 64°F
Avg: 53°F
Low: 43°F
Nov
48°
High: 58°F
Avg: 48°F
Low: 39°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 6.2"
6.2"
6.20"
Jan
5.2"
5.20"
Feb
5.7"
5.66"
Mar
4.0"
4.03"
Apr
0.7"
0.66"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
1.3"
1.30"
Oct
4.3"
4.31"
Nov
5.7"
5.67"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:27 AM – 5:09 PM · 9h 41m
Feb: 7:05 AM – 5:41 PM · 10h 37m
Mar: 7:27 AM – 7:10 PM · 11h 43m
Apr: 6:40 AM – 7:38 PM · 12h 58m
May: 6:04 AM – 8:05 PM · 14h 01m
Jun: 5:52 AM – 8:26 PM · 14h 34m
Jul: 6:04 AM – 8:24 PM · 14h 21m
Aug: 6:29 AM – 7:56 PM · 13h 27m
Sep: 6:56 AM – 7:10 PM · 12h 14m
Oct: 7:23 AM – 6:24 PM · 11h 00m
Nov: 6:55 AM – 4:52 PM · 9h 57m
Dec: 7:22 AM – 4:47 PM · 9h 26m
Daylight Pacific Time (PT) Longest: 14h 35m · Shortest: 9h 25m

Nearby Stations

Moffett Federal Airfield, CA January 6 - December 23 Redwood City, CA January 17 - December 12 Woodside Fire Stn 1, CA February 25 - November 25 Newark, CAJanuary 1 - December 27 Skyline Ridge Preserve, CA March 21 - December 15 Fremont, CA January 7 - December 22

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