Frost Dates for Morgan Hill, CA

Based on data from Gilroy weather station, 10 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 24
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. November 27
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 March 8
First Fall Frost November 20

Hard Freeze (28°F)

Last Spring Hard Freeze January 16
First Fall Hard Freeze December 12
37.13°N, -121.65°W © OpenStreetMap

Growing Season

277 Days February 24 to November 27

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° 90°
49°
High: 61°F
Avg: 49°F
Low: 38°F
Jan
52°
High: 64°F
Avg: 52°F
Low: 40°F
Feb
55°
High: 68°F
Avg: 55°F
Low: 43°F
Mar
58°
High: 72°F
Avg: 58°F
Low: 45°F
Apr
63°
High: 77°F
Avg: 63°F
Low: 49°F
May
67°
High: 83°F
Avg: 67°F
Low: 52°F
Jun
71°
High: 87°F
Avg: 71°F
Low: 54°F
Jul
71°
High: 87°F
Avg: 71°F
Low: 54°F
Aug
69°
High: 85°F
Avg: 69°F
Low: 53°F
Sep
63°
High: 79°F
Avg: 63°F
Low: 48°F
Oct
55°
High: 68°F
Avg: 55°F
Low: 42°F
Nov
49°
High: 60°F
Avg: 49°F
Low: 37°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 8.0"
8.0"
7.97"
Jan
6.4"
6.36"
Feb
5.8"
5.81"
Mar
3.7"
3.68"
Apr
0.8"
0.76"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
1.4"
1.43"
Oct
3.9"
3.87"
Nov
6.9"
6.89"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9.5h10.5h11.5h13h14h14.5h14.5h13.5h12h11h10h9.5h
Jan: 7:08 AM – 4:52 PM · 9h 44m
Feb: 6:41 AM – 5:19 PM · 10h 38m
Mar: 6:09 AM – 5:51 PM · 11h 43m
Apr: 5:31 AM – 6:29 PM · 12h 57m
May: 5:01 AM – 6:59 PM · 13h 59m
Jun: 4:44 AM – 7:16 PM · 14h 32m
Jul: 4:51 AM – 7:09 PM · 14h 18m
Aug: 5:17 AM – 6:43 PM · 13h 25m
Sep: 5:53 AM – 6:07 PM · 12h 13m
Oct: 6:29 AM – 5:31 PM · 11h 01m
Nov: 7:01 AM – 4:59 PM · 9h 59m
Dec: 7:16 AM – 4:44 PM · 9h 28m
Daylight Longest: 14h 33m · Shortest: 9h 27m

Nearby Stations

Watsonville Wtr Wks, CA January 28 - December 13 Hollister 2, CA February 19 - December 1 Watsonville Muni AP, CA January 31 - December 9 Paicines 4 W, CA April 14 - November 2 Salinas Municipal AP, CA January 29 - December 10 Mt Hamilton, CA May 3 - November 18

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