Frost Dates for Richardson Gr Sp, 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. March 10
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 March 27
First Fall Frost November 21

Hard Freeze (28°F / -2°C)

Last Spring Hard Freeze January 15
First Fall Hard Freeze December 26
40.03°N, -123.79°W © OpenStreetMap

Growing Season

266 Days March 10 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

Learn more

Temperature

30° 50° 70° 90°
45°
High: 50°
Avg: 45°
Low: 39°
Jan
46°
High: 53°
Avg: 46°
Low: 40°
Feb
50°
High: 59°
Avg: 50°
Low: 41°
Mar
53°
High: 64°
Avg: 53°
Low: 42°
Apr
59°
High: 72°
Avg: 59°
Low: 47°
May
64°
High: 77°
Avg: 64°
Low: 51°
Jun
70°
High: 86°
Avg: 70°
Low: 54°
Jul
70°
High: 87°
Avg: 70°
Low: 54°
Aug
67°
High: 83°
Avg: 67°
Low: 50°
Sep
57°
High: 70°
Avg: 57°
Low: 45°
Oct
48°
High: 55°
Avg: 48°
Low: 41°
Nov
44°
High: 49°
Avg: 44°
Low: 38°
Dec
32°F
Avg High Avg Temp Avg Low Light Frost (32°F)

Precipitation

0" 5" 10" 15" 16.7"
14.5"
14.53"
Jan
13.1"
13.10"
Feb
11.6"
11.62"
Mar
7.2"
7.15"
Apr
5.7"
5.68"
May
0.8"
0.80"
Jun
0.0"
0.00"
Jul
0.0"
0.00"
Aug
0.0"
0.00"
Sep
6.6"
6.59"
Oct
10.6"
10.57"
Nov
16.7"
16.66"
Dec

Sunrise / Sunset

4a7a10a1p4p7p10pNoonJanFebMarAprMayJunJulAugSepOctNovDec9h10h12h13h14h15h15h14h12h11h10h9h
Jan: 7:16 AM – 4:44 PM · 9h 27m
Feb: 6:46 AM – 5:14 PM · 10h 28m
Mar: 6:09 AM – 5:51 PM · 11h 41m
Apr: 5:28 AM – 6:32 PM · 13h 04m
May: 4:54 AM – 7:06 PM · 14h 13m
Jun: 4:35 AM – 7:25 PM · 14h 50m
Jul: 4:43 AM – 7:17 PM · 14h 35m
Aug: 5:12 AM – 6:48 PM · 13h 35m
Sep: 5:53 AM – 6:07 PM · 12h 15m
Oct: 6:33 AM – 5:27 PM · 10h 55m
Nov: 7:08 AM – 4:52 PM · 9h 44m
Dec: 7:25 AM – 4:35 PM · 9h 10m
Daylight Longest: 14h 51m · Shortest: 9h 09m

Nearby Stations

Shelter Cove Aviation, CA Grizzly Creek Sp, CA March 4 - November 22 Covelo, CAApril 23 - October 19 Scotia, CA February 1 - December 19 Ft Bragg 5 N, CA March 2 - December 1 Willits 1 Ne, CAMay 5 - October 9

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