90mm of equivalent rainfall lost!

Thursday marked the change between the very hot and dry weather over the past three days to the cooler, windier weather that saw a drop of 8C between the extreme maxima. The peak on Thursday was 21.5C, just 0.9C above my 40-year average. The past night was also cooler logging a minimum of 11.0C at 05.27 early Friday being 0.8C above average. These changes were due to the low pressure system to the northwest.

Friday produced variable brief sunshine first thing but breezy. The wind continues from the west.

The unusually deep depression, for summer time, combined with a developing depression to the west of Ireland, will continue the flow of brisk, westerly winds that will again today moderate the temperatures by day.

To date we have lost over 90mm of equivalent rainfall through evaporation from ground sources and plant life. The daily rate recently has increased to over 4mm thanks to the heat and brisk wind. The rainfall total for June is currently just 20.5mm, therefore with little rain in the forecast it is likely to be the driest month since February 2023.

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