Frost Dates for Morro Bay, CA

Based on data from Morro Bay Fire Dept weather station, 0 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 19
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. January 14

This location has a nearly year-round growing season with a brief frost risk period in winter.

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 January 31
First Fall Frost January 2
35.37°N, -120.85°W © OpenStreetMap

Growing Season

361 Days January 19 to January 14

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 10a

Avg. annual minimum: 30 to 35°F (−1 to 2°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

40° 50° 60° 70° 80°
56°
High: 65°F
Avg: 56°F
Low: 46°F
Jan
57°
High: 65°F
Avg: 57°F
Low: 48°F
Feb
57°
High: 66°F
Avg: 57°F
Low: 49°F
Mar
58°
High: 67°F
Avg: 58°F
Low: 49°F
Apr
59°
High: 67°F
Avg: 59°F
Low: 52°F
May
60°
High: 66°F
Avg: 60°F
Low: 54°F
Jun
62°
High: 67°F
Avg: 62°F
Low: 57°F
Jul
63°
High: 70°F
Avg: 63°F
Low: 57°F
Aug
64°
High: 72°F
Avg: 64°F
Low: 56°F
Sep
63°
High: 73°F
Avg: 63°F
Low: 54°F
Oct
60°
High: 69°F
Avg: 60°F
Low: 50°F
Nov
55°
High: 65°F
Avg: 55°F
Low: 46°F
Dec
Avg High Avg Temp Avg Low

Precipitation

0" 3" 6" 8.8"
8.8"
8.83"
Jan
7.5"
7.52"
Feb
7.4"
7.36"
Mar
3.9"
3.90"
Apr
0.0"
0.00"
May
0.0"
0.00"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
0.8"
0.80"
Oct
5.4"
5.38"
Nov
7.3"
7.28"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h10.5h11.5h13h14h14.5h14h13.5h12h11h10h9.5h
Jan: 7:04 AM – 4:56 PM · 9h 52m
Feb: 6:39 AM – 5:21 PM · 10h 43m
Mar: 6:08 AM – 5:52 PM · 11h 44m
Apr: 5:33 AM – 6:27 PM · 12h 54m
May: 5:04 AM – 6:56 PM · 13h 52m
Jun: 4:49 AM – 7:11 PM · 14h 22m
Jul: 4:55 AM – 7:05 PM · 14h 10m
Aug: 5:20 AM – 6:40 PM · 13h 20m
Sep: 5:54 AM – 6:06 PM · 12h 13m
Oct: 6:28 AM – 5:32 PM · 11h 05m
Nov: 6:57 AM – 5:03 PM · 10h 06m
Dec: 7:11 AM – 4:49 PM · 9h 37m
Daylight Longest: 14h 23m · Shortest: 9h 37m

Nearby Stations

San Luis Obispo Poly, CA January 16 - December 25 San Luis Obispo AP, CA January 31 - December 11 Pismo Beach, CA February 1 - January 4 Paso Robles, CA March 15 - November 10 Paso Robles Muni AP, CA April 4 - November 5 Hearst Castle, CA February 13 - February 1

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