Frost Dates for Lathrop, CA

Based on data from Stockton Metro AP weather station, 5 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 6
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 1
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 17
First Fall Frost November 24

Hard Freeze (28°F)

Last Spring Hard Freeze January 10
First Fall Hard Freeze December 16
37.82°N, -121.28°W © OpenStreetMap

Growing Season

299 Days February 6 to December 1

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.

BSk Cold Semi-Arid (Steppe)

Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.

Köppen climate map

Temperature

30° 50° 70° 90°
48°
High: 57°F
Avg: 48°F
Low: 39°F
Jan
52°
High: 63°F
Avg: 52°F
Low: 41°F
Feb
56°
High: 69°F
Avg: 56°F
Low: 44°F
Mar
61°
High: 75°F
Avg: 61°F
Low: 47°F
Apr
68°
High: 83°F
Avg: 68°F
Low: 53°F
May
74°
High: 90°F
Avg: 74°F
Low: 58°F
Jun
78°
High: 95°F
Avg: 78°F
Low: 61°F
Jul
77°
High: 94°F
Avg: 77°F
Low: 60°F
Aug
74°
High: 90°F
Avg: 74°F
Low: 58°F
Sep
65°
High: 80°F
Avg: 65°F
Low: 51°F
Oct
55°
High: 67°F
Avg: 55°F
Low: 43°F
Nov
48°
High: 57°F
Avg: 48°F
Low: 38°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 4.7"
4.6"
4.60"
Jan
4.1"
4.11"
Feb
4.0"
4.04"
Mar
3.6"
3.65"
Apr
1.0"
0.99"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
1.1"
1.14"
Oct
3.4"
3.36"
Nov
4.7"
4.73"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:11 AM – 4:49 PM · 9h 39m
Feb: 6:42 AM – 5:18 PM · 10h 35m
Mar: 6:09 AM – 5:51 PM · 11h 42m
Apr: 5:30 AM – 6:30 PM · 12h 59m
May: 4:59 AM – 7:01 PM · 14h 03m
Jun: 4:42 AM – 7:18 PM · 14h 37m
Jul: 4:49 AM – 7:11 PM · 14h 23m
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 59m
Nov: 7:03 AM – 4:57 PM · 9h 55m
Dec: 7:18 AM – 4:42 PM · 9h 23m
Daylight Longest: 14h 38m · Shortest: 9h 22m

Nearby Stations

Stockton Fire Stn 4, CA February 5 - December 8 Lodi, CAFebruary 9 - December 5 Tracy Carbona, CA February 25 - November 26 Tracy Pumping Plt, CA January 19 - December 10 Modesto City Co AP, CA January 31 - December 5 Antioch Pumping Plt #3, CA January 12 - December 19

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