Highest Diurnal Range Of Temperature - 29th August 1936

[Coast]

On the 29th August 1936 in Rickmansworth, the temperature rose within 9 hours from an overnight low of 1.1 °C to an afternoon high of 29.4°C. Meteorologist Helen Young visits the bizarre frost hollow of Rickmansworth, near the Chilterns and talks to Phillip Eden on a Radio 7 program here:

http://www.bbc.co.uk/iplayer/episode/b007k...rever_Freezing/

[Optimus Prime]

That just beats December 1995 then. Altnahara rose from a reading of -27.2c to +1.7c. Both unbelievable ranges.

Edited January 29, 2009 by Optimus Prime

[Weather-history]

The data for that day

GMT Temp F

1am 38.8

2am 37.9

3am 36.2

4am 35.1

5am 34.4

6am 35.5

7am 46.7

8am 58.3

9am 70.7

10am 74.1

11am 78.0

12pm 80.9

1pm 83.0

2pm 84.5

3pm 84.5

4pm 83.1

5pm 79.7

6pm 69.2

7pm 56.8

8pm 51.1

9pm 47.7

10pm 46.6

11pm 45.7

12am 44.1

The radiation thermometers ranged from 26.3F to 150.4F

[Nick H]

So in new money it went from 1.9°C at 6am to 21.5°C at 9am.