September 3rd. Cold and windy all day with a massive rain shower about 5pm.

September 4th. An extremely cold day.

September 5th. Still very cold.

September 6th. A grey, damp, rainy day.

September 13th. Foul weather, rain and grey clouds.

September 18th. Massive thunderstorm last night: preliminary rumbles about 2am and continuous thunder and lightning waking me up at 4am. One massive flash, and crack of thunder, about 4.10, I timed at ~ 0.3s between flash and crash, ~ 120 yards away! Actually I was quite scared but gave myself a good scientific talking-to.

'cool, and unsettled, with some heavy spells of rain, and in particular, some severe thunderstorms' [...]

September 22nd. Rain all day today and thunder now.

September 23rd. Rain most of day again, clearing towards the end of the afternoon - floods in various places, apparently.

'There was widespread flooding across N and W London ... following overnight thunderstorms on the 22-23'

September 24th. At 11 am went out: raining, and river very high, but on the way back the sun came out and cheered me up very much.

September 25th. Up at 10 am: heavy rain kept me in till about 2 pm.

September 26th. Very warm.

September 28th. Very warm and still today.

'Towards the end of the month, there was a warm spell'