Whyalla Weather Records

Whyalla, South Australia weather averages and records from 1906–2023 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in Whyalla, South Australia was 49.4 °C which occurred on January 2, 1960.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in Whyalla, South Australia was -3.2 °C which occurred on June 12, 1984.
Lowest Temperatures: All-Time By Year
Whyalla Weather by Month
Averages based on the years 1991–2020
Month Average (°C) Record (°C) Average (cm)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 30.6 18.2 49.4 5.9 2.2
February 29.9 18.0 48.0 8.6 2.0
March 27.3 15.5 44.3 5.5 1.5
April 24.3 12.0 40.4 2.2 1.6
May 20.4 8.8 32.9 -0.4 2.0
June 17.2 6.4 27.2 -3.2 2.9
July 17.3 5.4 29.5 -2.5 1.8
August 18.6 5.9 33.0 -2.0 2.0
September 21.8 8.3 38.0 -0.7 2.6
October 24.3 11.2 42.1 0.3 2.3
November 26.8 14.2 46.1 4.4 2.5
December 28.4 16.1 46.8 4.7 2.6
Entire year 23.9 11.7 49.4 -3.2 26.5
More Whyalla Weather Records
1906–2023
Highest daily low 34.3 °C January 24, 1982
Lowest daily high 9.4 °C June 1, 1989
Greatest daily range
(Difference of high and low)
32.4 °C January 30, 1996
Greatest difference in daily high
over two conscutive days
23.2 °C Nov 29–30, 1966
Most daily precipitation 17.0 cm February 18, 1946
Most monthly precipitation 21.7 cm February 1946
Most yearly precipitation 55.5 cm 1946
Most yearly days with precipitation 111 1995
Most days in a year < 0 °C 10 1997
Most days in a year ≥ 20 °C 270 2007
Most days in a year ≥ 25 °C 155 2007
Most days in a year ≥ 30 °C 84 2013
Most days in a year ≥ 35 °C 41 2019
Most days in a year ≥ 40 °C 18 2009
Whyalla Weather Streaks
Most consecutive days...
With precipitation 12 days Aug 29 – Sep 9, 1997
Without precipitation 108 days Oct 15, 1928 – Jan 30, 1929
High temperature ≥ 20 °C 182 days Nov 5, 2009 – May 5, 2010
High temperature ≥ 25 °C 46 days Dec 29, 2000 – Feb 12, 2001
High temperature ≥ 30 °C 16 days Mar 2–17, 2008
High temperature ≥ 35 °C 10 days Feb 27 – Mar 8, 1989
High temperature ≥ 40 °C 6 days Jan 27 – Feb 1, 2009
Plant Hardiness Zone
10A
Whyalla is in plant hardiness zone 10A
based on average yearly minimum temperature from 1991–2020
Whyalla Weather by Year
More Whyalla Weather
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Weather Station Details
Years Station Coordinates
1983–2023 Whyalla Aero location
1906–1982 Whyalla (Norrie) location