The last week or so has seen a distinct W-E split in weather and temperature thanks to winds blowing in from the east.

On the whole, west has been best with temps locally topping 21C but in the east beneath cloud, fog and a stiff onshore wind, temperatures have struggled at 7-9C.

Inland where winds have been lightest and skies clearest, we’ve seen a sizable diurnal temperature swing (temp difference between night and day). Yesterday saw a low down to -5.1C at Shap, Cumbria but by day it climbed into the mid teens. Aviemore went from -2.8C to 18.4C.

Yesterday’s 24 hour temperature range.

As heights lower over and particularly west/south of the UK, the cloud cover has shifted from SSE to N over the UK as satellite between yesterday and today show.

Yesterday

Today

Therefore the greatest diurnal swing has shifted to south-central England where his morning parts of Oxfordshire dipped to -3C with frost.

This afternoon we may see 20C.

As low pressure is currently replacing high to the WNW of the UK, the breakdown is coming with the loss of dry, settled, stable to warmer, more humid Thursday and Friday.

Here’s the pressure chart for tomorrow.

The low to the south will destabilise our atmosphere and draw Mediterranean warmth and humidity northward.

Thunderstorms and torrential downpours will result.

Next week looks unsettled in the North and West, driest, warmest in South/East. Could see mid-20s in Southeast next week.

Watch today’s video.

FEATURED IMAGE CREDIT: kumo_bot‏ @neje_bot

Tags: diurnal temperature