The following graph details the RASP atmospheric predictions for the data shown.
This is for the RAT BGA turn point location (i.e. the club house) and is produced at 06:00 each day. The forecast is given in one hour increments and loops between 06:00 GMT and 18:00 GMT.

If you wish, you can download the one hour prediction using the following URL:
http://rasp.inn.leedsmet.ac.uk/cgi-bin/get_rasp_skewt.cgi?region=UK12&grid=d2&day=0&i=1332&k=1547&width=2000&height=2000&time=0600
Note that the time at the end of the URL is for 06:00 - select your hour by changing this to the hour required (e.g. midday is 1200).