Monday was the last day when the Continental warm air flooded the country that, with 2.9 hours of sunshine, lifted the thermometer to a maximum of 24.3C. This was 5.7C above the September average and the warmest day since 7th August.
A few spots of rain were observed at 18.05 that were insufficient to register in the rain gauge, and recorded as a trace.
Another mild night saw a minimum of 13.4C being 4.1C above average due to the thick cloud cover.
Tuesday arrived with thick cloud and a brisk wind now from the north.
Although autumn is accepted as starting at the equinox on 21st September, meteorologically autumn started on 1st September. This is to simplify the recording and analysis of data from three complete months rather than from 21st of September to 21st December. The same method is used for all four seasons.
Update at 16.30: temperature down 3C on Monday peak with maximum of 21.5C, but still 2.9C above September average. This was mainly due to a brisk wind varying between north and northeast rather than the south as earlier this month.