Windrush Weather

Sunshine ahead today under a nose of high pressure

Tuesday 25th November
Monday was another gloomy day under overcast skies that without sunshine limited the rise in temperature to a maximum of 6.8C being 3.5C below average, which was logged late in the day at 17.02 as the temperature eased upwards a fraction. As the barometric pressure began to rise, under a ridge of high pressure, the skies cleared overnight that allowed the temperature to drop to 2.0C at 05.10 being 2.0C below average.

There were at least three occasion that I observed when a few drops of rain fell sporadically during the morning and afternoon amounting to just 0.4mm of precipitation.

We have now endured nine successive days when the maximum and minimum were both below average.

Tuesday began bright with weak sunshine from the sun low on the horizon with mostly blue skies, some light variable cloud drifting across on the north-northwest light breeze. The thermometer had edged upwards to 2.9C by 08.00. The downside to the temporary high pressure will be clear skies overnight tonight that will allow the thermometer to plunge below zero, which will allow a sharp air frost to form.

The barometric pressure has risen a significant 24mb over the past twenty-four hours, with a reading of 1013.3mb at 08.00, under the ridge of high pressure. This will give us a fine if cool day that will carry over into Wednesday morning before it falls away under the influence of an anticyclone approaching the UK shoes from the northwest. This low pressure is deepening rapidly with a forecast very low centre of pressure of just 955mb, which will mean gales in the north but breezy conditions and variable rainfall here under much cloud from late Wednesday into Thursday.