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Northam September Weather

Averages and records for weather in Northam, Western Australia in the month of September.

Typical Northam September Weather 1991–2020
Average daily high	20.6 °C
Average daily low	6.5 °C
Average monthly precipitation	4.0 cm
Daily chance of precipitation	39.3%

Northam September Weather Records 1750–2023
Highest temperature	34.7 °C	September 28, 2023
Lowest temperature	-1.4 °C	September 1, 2005
Highest daily low	16.7 °C	September 8, 1916
Lowest daily high	8.3 °C	September 2, 1917
Hottest average high temperature	24.7 °C	1914
Coldest average high temperature	17.6 °C	1915
Most daily precipitation	3.4 cm	September 26, 2008
Most monthly precipitation	10.2 cm	1973

Note: Daily averages are a moving average which includes 14 days before and after

Day	Average (°C)		Record (°C)
Day	High	Low	High	Low
September 1	19.3	5.7	26.7	-1.4
September 2	19.4	5.8	29.3	0.0
September 3	19.5	5.9	29.1	-1.0
September 4	19.6	6.0	27.2	-0.3
September 5	19.7	6.0	28.3	0.0
September 6	19.8	6.0	30.0	-0.6
September 7	19.8	6.1	28.9	0.2
September 8	19.9	6.2	28.5	0.0
September 9	20.0	6.2	31.0	0.0
September 10	20.1	6.2	30.8	-1.0
September 11	20.2	6.3	27.9	-1.4
September 12	20.3	6.3	29.3	-0.4
September 13	20.3	6.4	31.2	-0.9
September 14	20.4	6.4	29.0	0.6
September 15	20.6	6.4	30.2	0.9
September 16	20.7	6.5	30.0	0.4
September 17	20.8	6.6	30.0	0.2
September 18	21.0	6.7	31.0	-0.2
September 19	21.1	6.7	32.2	-0.6
September 20	21.2	6.8	33.6	0.8
September 21	21.3	6.8	31.7	0.0
September 22	21.5	6.9	34.4	-0.6
September 23	21.6	6.9	29.0	-0.2
September 24	21.7	7.0	31.7	0.9
September 25	21.9	7.0	33.8	1.3
September 26	22.0	7.1	33.3	1.3
September 27	22.2	7.1	34.6	0.6
September 28	22.3	7.2	34.7	-0.5
September 29	22.5	7.3	33.8	0.5
September 30	22.6	7.4	34.6	1.7

Weather Station Details

Years	Station	Coordinates
1750–2023	Northam	location