Frost Dates for Mt Lemmon Willow Canyon, AZ
Elevation: 2142 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.
April 1
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 19
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
April 8
First Fall Frost
November 11
Hard Freeze (28°F)
Last Spring Hard Freeze
March 12
First Fall Hard Freeze
November 30
Growing Season
232 Days
April 1 to November 19
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 8a
Avg. annual minimum: 10 to 15°F
Köppen Climate
The Köppen climate classification system categorizes climates based on temperature and precipitation patterns.
BSk
Cold Semi-Arid (Steppe)
Cool to cold with low rainfall and wide temperature swings. Common in the western Great Plains and central Asia. Short growing seasons benefit from season extension techniques.
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 | 50° | 42° | 34° |
| February | 50° | 42° | 33° |
| March | 55° | 46° | 37° |
| April | 62° | 52° | 43° |
| May | 71° | 61° | 51° |
| June | 80° | 70° | 60° |
| July | 80° | 72° | 64° |
| August | 79° | 71° | 62° |
| September | 75° | 67° | 59° |
| October | 68° | 58° | 49° |
| November | 59° | 50° | 40° |
| December | 49° | 41° | 33° |
Precipitation
0"
2"
4"
6"
6.8"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 5.3 |
| February | 5.9 |
| March | 5.4 |
| April | 1.6 |
| May | 0.0 |
| June | 0.9 |
| July | 3.9 |
| August | 4.5 |
| September | 3.3 |
| October | 4.2 |
| November | 6.1 |
| December | 6.8 |
Sunrise / Sunset
Daylight
Longest: 14h 08m · Shortest: 9h 52m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:57 AM | 5:03 PM | 10h 06m |
| February | 6:34 AM | 5:26 PM | 10h 51m |
| March | 6:07 AM | 5:53 PM | 11h 46m |
| April | 5:36 AM | 6:24 PM | 12h 48m |
| May | 5:10 AM | 6:50 PM | 13h 40m |
| June | 4:57 AM | 7:03 PM | 14h 07m |
| July | 5:02 AM | 6:58 PM | 13h 56m |
| August | 5:24 AM | 6:36 PM | 13h 12m |
| September | 5:54 AM | 6:06 PM | 12h 11m |
| October | 6:25 AM | 5:35 PM | 11h 11m |
| November | 6:51 AM | 5:09 PM | 10h 18m |
| December | 7:04 AM | 4:56 PM | 9h 53m |
Nearby Stations
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