Frost Dates for Port Broughton, SA

Based on data from Snowtown (Rayville Park) weather station, 20 miles away

Elevation: 10 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. October 3
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. May 30

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 October 13
First Fall Frost May 22

Hard Freeze (−2°C)

Last Spring Hard Freeze August 19
First Fall Hard Freeze June 13
33.60°S, 137.94°E © OpenStreetMap

Growing Season

239 Days October 3 to May 30

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

Learn more

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.

Köppen climate map

Temperature

Avg High Avg Temp Avg Low
Temperature table
Average monthly temperatures (°C)
Month Avg High Avg Temp Avg Low
January33°24°15°
February32°23°14°
March29°20°12°
April25°17°10°
May20°14°7°
June16°11°5°
July16°10°5°
August17°11°4°
September21°13°5°
October25°16°7°
November28°19°10°
December31°22°12°

Precipitation

Precipitation table
Average monthly precipitation (millimeters)
MonthPrecipitation
January10
February15
March13
April25
May30
June51
July33
August43
September38
October18
November25
December25

Sunrise / Sunset

Daylight Australian Central Time (ACT) Longest: 14h 15m · Shortest: 9h 45m
Sunrise and sunset table
Sunrise, sunset, and daylight on the 15th of each month (Australian Central Time (ACT))
Month Sunrise Sunset Daylight
January6:26 AM8:27 PM14h 01m
February6:55 AM8:08 PM13h 13m
March7:19 AM7:34 PM12h 15m
April6:43 AM5:52 PM11h 09m
May7:06 AM5:21 PM10h 15m
June7:24 AM5:10 PM9h 46m
July7:24 AM5:22 PM9h 58m
August6:59 AM5:44 PM10h 44m
September6:18 AM6:06 PM11h 48m
October6:36 AM7:28 PM12h 52m
November6:09 AM7:56 PM13h 47m
December6:06 AM8:20 PM14h 14m

Nearby Stations

Clare High School, SA August 29 - May 31 Port Pirie Nyrstar Comparison, SA Maitland, SA Eudunda, SAAugust 8 - June 17 Roseworthy Aws, SA September 24 - June 15 Yongala, SAOctober 10 - May 15

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