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Stornoway September Weather

Averages and records for weather in Stornoway, United Kingdom in the month of September.

Typical Stornoway September Weather 1991–2020
Average daily high	14.7 °C
Average daily low	9.4 °C
Average monthly precipitation	10.4 cm
Daily chance of precipitation	69.9%

Stornoway September Weather Records 1873–2024
Highest temperature	25.0 °C	September 1, 1906
Lowest temperature	-0.4 °C	September 21, 1964
Highest daily low	15.8 °C	September 9, 2023
Lowest daily high	7.2 °C	September 30, 1888
Hottest average high temperature	17.2 °C	1901
Coldest average high temperature	11.7 °C	1918
Most daily precipitation	4.9 cm	September 4, 1936
Most monthly precipitation	20.7 cm	1981

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	15.6	10.2	25.0	2.8
September 2	15.5	10.2	24.4	2.8
September 3	15.4	10.1	20.6	0.0
September 4	15.4	10.0	22.2	2.8
September 5	15.3	10.0	21.7	3.9
September 6	15.2	9.9	22.9	2.2
September 7	15.2	9.9	22.0	2.2
September 8	15.1	9.8	20.6	1.7
September 9	15.1	9.8	21.9	0.1
September 10	15.1	9.7	20.6	2.2
September 11	15.0	9.7	20.0	1.3
September 12	15.0	9.6	19.1	0.3
September 13	14.9	9.6	19.0	1.6
September 14	14.8	9.5	20.0	0.0
September 15	14.8	9.5	20.0	1.7
September 16	14.7	9.4	19.4	3.0
September 17	14.6	9.3	20.6	2.8
September 18	14.5	9.2	21.7	1.7
September 19	14.4	9.1	18.3	1.1
September 20	14.3	9.0	20.8	1.7
September 21	14.2	8.9	19.7	-0.4
September 22	14.2	8.9	20.1	1.1
September 23	14.1	8.8	20.0	0.0
September 24	14.0	8.7	18.2	1.7
September 25	13.9	8.6	18.9	-0.2
September 26	13.8	8.6	17.8	0.6
September 27	13.7	8.5	19.4	0.0
September 28	13.7	8.4	18.3	0.8
September 29	13.6	8.4	20.0	1.1
September 30	13.6	8.3	20.6	0.6

Weather Station Details

Years	Station	Coordinates
1873–2024	Stornoway Airport	location