Frost Dates for Colusa 2 Ssw, CA
Elevation: 15 m
Frost Dates
Last Spring Frost (50%) A 50% chance that the last spring frost has already passed by this date. Most gardeners use this as their primary planting guide.
February 14
First Fall Frost (50%) A 50% chance that the first fall frost has occurred by this date. Plan to harvest or protect tender plants before this date.
December 1
30% Probability
Only 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 28
First Fall Frost
November 23
Hard Freeze (28°F)
Last Spring Hard Freeze
January 8
First Fall Hard Freeze
December 15
Growing Season
291 Days
February 14 to December 1
USDA Hardiness Zone
Hardiness 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
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
Csa
Hot-Summer Mediterranean
Hot, dry summers and mild, wet winters. Classic Mediterranean climate ideal for grapes, olives, tomatoes, and herbs. Summer irrigation is usually necessary.
Temperature
30°
50°
70°
90°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 55° | 46° | 38° |
| February | 60° | 51° | 41° |
| March | 67° | 55° | 44° |
| April | 73° | 60° | 46° |
| May | 81° | 67° | 53° |
| June | 88° | 73° | 59° |
| July | 92° | 76° | 60° |
| August | 92° | 75° | 58° |
| September | 89° | 72° | 54° |
| October | 79° | 64° | 48° |
| November | 64° | 53° | 42° |
| December | 55° | 46° | 38° |
Precipitation
0"
2"
4"
6"
6.3"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 6.3 |
| February | 6.0 |
| March | 4.9 |
| April | 4.3 |
| May | 1.5 |
| June | 0.0 |
| July | 0.0 |
| August | 0.0 |
| September | 0.0 |
| October | 1.6 |
| November | 5.3 |
| December | 6.1 |
Sunrise / Sunset
Daylight
Pacific Time (PT)
Longest: 14h 46m · Shortest: 9h 14m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:31 AM | 5:03 PM | 9h 32m |
| February | 7:07 AM | 5:38 PM | 10h 31m |
| March | 7:27 AM | 7:09 PM | 11h 42m |
| April | 6:37 AM | 7:39 PM | 13h 02m |
| May | 5:60 AM | 8:09 PM | 14h 09m |
| June | 5:46 AM | 8:31 PM | 14h 45m |
| July | 5:59 AM | 8:29 PM | 14h 30m |
| August | 6:26 AM | 7:58 PM | 13h 32m |
| September | 6:55 AM | 7:10 PM | 12h 14m |
| October | 7:25 AM | 6:22 PM | 10h 57m |
| November | 6:59 AM | 4:47 PM | 9h 48m |
| December | 7:26 AM | 4:42 PM | 9h 15m |
Nearby Stations
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