Frost Dates for Morongo Valley, CA
Based on data from Morongo Valley N weather station, 3 miles away
Elevation: 2582 ft
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 25
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 15
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
March 11
First Fall Frost
December 7
Hard Freeze (28°F)
Last Spring Hard Freeze
January 25
First Fall Hard Freeze
January 6
Growing Season
294 Days
February 25 to December 15
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 9a
Avg. annual minimum: 20 to 25°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
BSh
Hot Semi-Arid (Steppe)
Hot with low but not negligible rainfall. Less extreme than true desert. Dryland farming techniques and drought-tolerant varieties work well. Mulching and water conservation are key.
Temperature
40°
60°
80°
100°
Avg High
Avg Temp
Avg Low
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 59° | 50° | 41° |
| February | 61° | 51° | 42° |
| March | 66° | 56° | 45° |
| April | 73° | 60° | 48° |
| May | 80° | 67° | 54° |
| June | 89° | 76° | 63° |
| July | 94° | 81° | 69° |
| August | 94° | 82° | 70° |
| September | 88° | 77° | 66° |
| October | 78° | 68° | 57° |
| November | 67° | 57° | 47° |
| December | 59° | 50° | 40° |
Precipitation
0"
3"
6"
9"
10.0"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 10.0 |
| February | 5.8 |
| March | 2.4 |
| April | 0.0 |
| May | 0.0 |
| June | 0.0 |
| July | 0.0 |
| August | 0.0 |
| September | 0.0 |
| October | 0.0 |
| November | 0.4 |
| December | 4.9 |
Sunrise / Sunset
Daylight
Pacific Time (PT)
Longest: 14h 17m · Shortest: 9h 43m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:57 AM | 4:55 PM | 9h 58m |
| February | 6:38 AM | 5:24 PM | 10h 46m |
| March | 7:04 AM | 6:48 PM | 11h 45m |
| April | 6:21 AM | 7:12 PM | 12h 52m |
| May | 5:49 AM | 7:36 PM | 13h 47m |
| June | 5:39 AM | 7:54 PM | 14h 16m |
| July | 5:50 AM | 7:54 PM | 14h 04m |
| August | 6:12 AM | 7:29 PM | 13h 16m |
| September | 6:35 AM | 6:47 PM | 12h 12m |
| October | 6:58 AM | 6:05 PM | 11h 07m |
| November | 6:26 AM | 4:37 PM | 10h 11m |
| December | 6:50 AM | 4:34 PM | 9h 44m |
Nearby Stations
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