Frost Dates for Alamo Dam, AZ
Elevation: 393 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.
March 4
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.
November 23
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 12
First Fall Frost
November 18
Hard Freeze (28°F)
Last Spring Hard Freeze
February 13
First Fall Hard Freeze
December 3
Growing Season
264 Days
March 4 to November 23
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.
BWh
Hot Desert
Very hot and extremely dry with minimal rainfall. Irrigation is essential for any gardening. Heat-tolerant crops and desert-adapted plants thrive; shade structures help in peak summer.
Temperature
30°
50°
70°
90°
110°
Avg High
Avg Temp
Avg Low
Light Frost (32°F)
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 66° | 49° | 32° |
| February | 70° | 53° | 36° |
| March | 77° | 59° | 41° |
| April | 85° | 67° | 48° |
| May | 94° | 76° | 57° |
| June | 105° | 85° | 65° |
| July | 108° | 91° | 74° |
| August | 107° | 90° | 73° |
| September | 101° | 83° | 64° |
| October | 90° | 70° | 51° |
| November | 76° | 58° | 40° |
| December | 65° | 48° | 31° |
Precipitation
0"
1"
2"
3"
3.9"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 3.7 |
| February | 3.9 |
| March | 3.0 |
| April | 0.0 |
| May | 0.0 |
| June | 0.0 |
| July | 1.8 |
| August | 3.4 |
| September | 1.3 |
| October | 0.0 |
| November | 0.0 |
| December | 2.3 |
Sunrise / Sunset
Daylight
Longest: 14h 17m · Shortest: 9h 43m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:01 AM | 4:59 PM | 9h 57m |
| February | 6:37 AM | 5:23 PM | 10h 46m |
| March | 6:08 AM | 5:52 PM | 11h 45m |
| April | 5:34 AM | 6:26 PM | 12h 52m |
| May | 5:06 AM | 6:54 PM | 13h 47m |
| June | 4:52 AM | 7:08 PM | 14h 16m |
| July | 4:58 AM | 7:02 PM | 14h 04m |
| August | 5:22 AM | 6:38 PM | 13h 17m |
| September | 5:54 AM | 6:06 PM | 12h 12m |
| October | 6:26 AM | 5:34 PM | 11h 07m |
| November | 6:55 AM | 5:05 PM | 10h 11m |
| December | 7:08 AM | 4:52 PM | 9h 43m |
Nearby Stations
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