Today is the Summer Solstice and, as a consequence, we will see the maximum number of daylight hours. Sunset will be around 21:30 hours this evening.
It is a bright start to the day but the early morning air temperature has dropped below 10c for the first time in around a fortnight. The air temperature at 06:24 hours was still a mild 9.7c.
The surface air pressure will steadily rise to around 1030mb as the day passes. The high surface air pressure strongly suggests that the risk of any rain in our area today is less than 5%.
It will be an often bright day but as the day passes the cloud will completely dissipate to leave us with clear night. These clear overnight conditions mean that the air temperature will reduce to around 9-10c. Our top daytime temperature today will be around 18c.
Today’s breeze will be deriving from a SW-NW arc and the average wind speed will be around 10-12mph.
Continuing my monitoring of the jet stream I am happy to report that the forecast models are still showing the “stream” to be positioning above the UK over the weekend and into next week. We should see some air temperatures climb into the mid 20s next week.
Summary: A day with bright spells but breezy at times.
Observations made on 21/6/2018 at 06:24 hours Hammerwich, Staffordshire.
Temperature : 9.7c; Air pressure : 1023.4mb rising slowly; Relative humidity 80%; Wind : 4mph WNW; Rain this month : 6.2mm; Rain this year : 279.2mm
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