Wednesday 13th May
The change in wind direction on Tuesday made all the difference in the feel of the weather, coming from the west, a less cool direction, although the thermometer only climbed to 15.4C at 18.06 during late evening sunshine, being 1.9C below average. The past night was cloudy with no air frost. The minimum of 5.7C was logged at 00.03 just after midnight, being 1.3C below average.
There were short bursts of sunshine on Wednesday morning after sunrise in Marlborough at 05.13, but sadly cloud soon built up allowing just short breaks of sunshine due to almost total cloud by 08.00, by which time the thermometer had reached 9.6C.
The low pressure that yesterday was centred between Scotland and Iceland has slipped southeastwards to be this morning just off the coast of East Anglia, which is why the barometric pressure at 08.00 read 1004.8mb, the lowest pressure all month. The wind has backed into the northwest, a cool direction, that will contain two troughs of low pressure inside the wider low pressure area, which will bring unsettled conditions during the day with possible showers this morning and gusty winds this afternoon.
Why frost can still occur in late Spring
Author: Met Office
Mon, 11 May 2026
With a cooler northerly flow bringing lower than average temperatures for the time of year and the risk of overnight frost for some, we explore why frost can still occur late into Spring.
As days grow longer and sunshine strengthens, frost is often the last thing people expect. Yet frosts can and do still occur well into late spring, including May.
While these events are usually short-lived and localised, they can catch gardeners and growers by surprise and help explain why frost may still be referenced in weather forecasts at this time of year.
Understanding how frost forms, and the conditions that favour it, helps explain why cold nights can still develop even as daytime temperatures rise.
What is frost?
Frost forms when temperatures at the ground or in the air fall to or below the freezing point of water. It is possible for frost to occur even when daytime conditions feel mild, particularly under the right overnight conditions.
There are two key types of frost to consider. Air frost occurs when the air temperature falls below freezing, typically measured at around one metre above the ground. Ground frost happens when the temperature at the surface drops below 0°C, even if the air temperature slightly above remains positive.