Frost Dates for Oro Valley, AZ
Based on data from Catalina Sp weather station, 3 miles away
Elevation: 2618 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.
April 2
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 11
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 4
Hard Freeze (28°F)
Last Spring Hard Freeze
March 12
First Fall Hard Freeze
November 21
Growing Season
223 Days
April 2 to November 11
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.
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
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 | 67° | 49° | 31° |
| February | 68° | 50° | 32° |
| March | 75° | 56° | 36° |
| April | 82° | 62° | 43° |
| May | 91° | 71° | 51° |
| June | 101° | 80° | 60° |
| July | 100° | 85° | 71° |
| August | 98° | 84° | 69° |
| September | 96° | 79° | 62° |
| October | 87° | 68° | 48° |
| November | 76° | 57° | 38° |
| December | 66° | 49° | 31° |
Precipitation
0"
2"
4"
6"
6.0"
Precipitation table
| Month | Precipitation |
|---|---|
| January | 5.0 |
| February | 4.8 |
| March | 3.2 |
| April | 0.0 |
| May | 0.0 |
| June | 0.7 |
| July | 5.6 |
| August | 5.1 |
| September | 3.7 |
| October | 0.0 |
| November | 0.9 |
| December | 6.0 |
Sunrise / Sunset
Daylight
Mountain Standard Time (MST)
Longest: 14h 08m · Shortest: 9h 52m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:30 AM | 5:36 PM | 10h 06m |
| February | 7:13 AM | 6:04 PM | 10h 51m |
| March | 6:41 AM | 6:26 PM | 11h 46m |
| April | 5:60 AM | 6:48 PM | 12h 48m |
| May | 5:30 AM | 7:10 PM | 13h 40m |
| June | 5:20 AM | 7:27 PM | 14h 07m |
| July | 5:31 AM | 7:27 PM | 13h 56m |
| August | 5:52 AM | 7:04 PM | 13h 12m |
| September | 6:13 AM | 6:24 PM | 12h 11m |
| October | 6:34 AM | 5:44 PM | 11h 11m |
| November | 6:60 AM | 5:18 PM | 10h 18m |
| December | 7:23 AM | 5:16 PM | 9h 53m |
Nearby Stations
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