Frost Dates for Roxby Downs (Olympic Dam Aerod, SA
Elevation: 99 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.
August 10
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.
June 5
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
August 19
First Fall Frost
May 28
Hard Freeze (−2°C)
Last Spring Hard Freeze
July 27
First Fall Hard Freeze
June 14
Growing Season
299 Days
August 10 to June 5
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: −4 to −1°C
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
0°
10°
20°
30°
40°
Avg High
Avg Temp
Avg Low
Temperature table
| Month | Avg High | Avg Temp | Avg Low |
|---|---|---|---|
| January | 37° | 29° | 21° |
| February | 36° | 28° | 20° |
| March | 32° | 25° | 17° |
| April | 27° | 20° | 13° |
| May | 22° | 15° | 8° |
| June | 19° | 12° | 5° |
| July | 19° | 11° | 4° |
| August | 21° | 13° | 5° |
| September | 25° | 17° | 9° |
| October | 29° | 21° | 13° |
| November | 32° | 24° | 16° |
| December | 35° | 27° | 19° |
Precipitation
0 mm
10 mm
20 mm
Precipitation table
| Month | Precipitation |
|---|---|
| January | 3 |
| February | 13 |
| March | 3 |
| April | 8 |
| May | 0 |
| June | 8 |
| July | 0 |
| August | 0 |
| September | 0 |
| October | 5 |
| November | 5 |
| December | 10 |
Sunrise / Sunset
Daylight
Australian Central Time (ACT)
Longest: 13h 58m · Shortest: 10h 02m
Sunrise and sunset table
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 6:39 AM | 8:25 PM | 13h 46m |
| February | 7:05 AM | 8:09 PM | 13h 04m |
| March | 7:25 AM | 7:39 PM | 12h 13m |
| April | 6:45 AM | 6:00 PM | 11h 15m |
| May | 7:05 AM | 5:33 PM | 10h 28m |
| June | 7:21 AM | 5:24 PM | 10h 02m |
| July | 7:22 AM | 5:34 PM | 10h 13m |
| August | 6:60 AM | 5:53 PM | 10h 54m |
| September | 6:22 AM | 6:12 PM | 11h 50m |
| October | 6:45 AM | 7:30 PM | 12h 46m |
| November | 6:20 AM | 7:55 PM | 13h 34m |
| December | 6:19 AM | 8:17 PM | 13h 58m |
Nearby Stations
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