Frost Dates for Aromas, CA

Based on data from Watsonville Wtr Wks weather station, 8 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. January 28
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 13
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 12
First Fall Frost December 4

Hard Freeze (28°F)

Last Spring Hard Freeze January 2
First Fall Hard Freeze December 26
36.89°N, -121.64°W © OpenStreetMap

Growing Season

320 Days January 28 to December 13

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°
51°
High: 62°F
Avg: 51°F
Low: 40°F
Jan
53°
High: 63°F
Avg: 53°F
Low: 42°F
Feb
54°
High: 65°F
Avg: 54°F
Low: 43°F
Mar
56°
High: 68°F
Avg: 56°F
Low: 45°F
Apr
59°
High: 69°F
Avg: 59°F
Low: 49°F
May
61°
High: 71°F
Avg: 61°F
Low: 52°F
Jun
63°
High: 71°F
Avg: 63°F
Low: 54°F
Jul
64°
High: 72°F
Avg: 64°F
Low: 55°F
Aug
64°
High: 74°F
Avg: 64°F
Low: 53°F
Sep
61°
High: 74°F
Avg: 61°F
Low: 49°F
Oct
56°
High: 68°F
Avg: 56°F
Low: 43°F
Nov
51°
High: 62°F
Avg: 51°F
Low: 39°F
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 7.9"
7.9"
7.87"
Jan
6.4"
6.42"
Feb
5.5"
5.49"
Mar
4.0"
3.96"
Apr
1.6"
1.56"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
2.2"
2.21"
Oct
6.0"
6.02"
Nov
7.5"
7.46"
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: 6:08 AM – 5:52 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 31m
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 02m
Nov: 7:01 AM – 4:59 PM · 9h 59m
Dec: 7:16 AM – 4:44 PM · 9h 29m
Daylight Longest: 14h 32m · Shortest: 9h 28m

Nearby Stations

Watsonville Muni AP, CA January 31 - December 9 Gilroy, CA February 24 - November 27 Santa Cruz, CA January 29 - December 13 Salinas #2, CA February 4 - December 6 Hollister 2, CA February 19 - December 1 Ben Lomond #4, CA March 25 - November 11

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