September 2003 Temperatures in Bolton
Average max: 18.2C
Highest max: 24.4C, 15th
Lowest max: 13.7C, 29th

Average min: 9.1C
Highest min: 14.7C, 16th
Lowest min: 3.6C, 24th

Average temp(˝max+min): 13.6C

No. days with rain observed: 12
No. days above 20C: 7

A dry and very warm month, especially during the first half, becoming cooler later. From the 1st until the 5th it was dry and fairly warm with some sun. From the 6th until the 11th it became rather cooler with some rain at times. From the 12th until the 17th it became very warm and sunny with the max temperature of the month of 24.4C being recorded on the 15th. From the 18th until the 22nd it became much cooler and more unsettled with rain at times. Despite becoming generally cooler the highest min of 14.7C was recorded on the 19th. From the 23rd until the 30th it remained rather unsettled but with only generally light rain and some sun at times.
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