Frost Dates for San Jacinto, CA

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 31
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 10
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 2

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze January 3
First Fall Hard Freeze December 21
33.80°N, -116.98°W © OpenStreetMap

Growing Season

314 Days January 31 to December 10

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

Learn more

Temperature

30° 50° 70° 90°
53°
High: 66°
Avg: 53°
Low: 40°
Jan
54°
High: 66°
Avg: 54°
Low: 42°
Feb
58°
High: 70°
Avg: 58°
Low: 45°
Mar
61°
High: 74°
Avg: 61°
Low: 48°
Apr
67°
High: 80°
Avg: 67°
Low: 53°
May
73°
High: 89°
Avg: 73°
Low: 58°
Jun
79°
High: 95°
Avg: 79°
Low: 64°
Jul
80°
High: 97°
Avg: 80°
Low: 64°
Aug
76°
High: 92°
Avg: 76°
Low: 61°
Sep
68°
High: 82°
Avg: 68°
Low: 53°
Oct
59°
High: 73°
Avg: 59°
Low: 44°
Nov
52°
High: 65°
Avg: 52°
Low: 39°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 2" 4" 6" 6.6"
6.2"
6.16"
Jan
6.6"
6.56"
Feb
6.3"
6.28"
Mar
0.9"
0.89"
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
0.0"
0.00"
Oct
2.4"
2.43"
Nov
6.0"
5.96"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec10h11h12h13h14h14h14h13h12h11h10h10h
Jan: 7:00 AM – 4:60 PM · 9h 59m
Feb: 6:36 AM – 5:24 PM · 10h 47m
Mar: 6:08 AM – 5:52 PM · 11h 45m
Apr: 5:35 AM – 6:25 PM · 12h 51m
May: 5:07 AM – 6:53 PM · 13h 45m
Jun: 4:53 AM – 7:07 PM · 14h 14m
Jul: 4:59 AM – 7:01 PM · 14h 02m
Aug: 5:22 AM – 6:38 PM · 13h 16m
Sep: 5:54 AM – 6:06 PM · 12h 12m
Oct: 6:26 AM – 5:34 PM · 11h 08m
Nov: 6:54 AM – 5:06 PM · 10h 12m
Dec: 7:07 AM – 4:53 PM · 9h 46m
Daylight Longest: 14h 15m · Shortest: 9h 45m

Nearby Stations

Hemet, CAJanuary 10 - December 23 Idyllwild Fire Dept, CA May 16 - October 24 Redlands, CA January 27 - December 19 Elsinore, CA January 28 - December 18 Riverside Citrus Exp, CA January 10 - January 2 Riverside Fire Stn 3, CA January 9 - December 25

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