Was the south coast of Devon predicted to have severe frost? Got a link? 

And how can you have had an air frost when you say the temperature has not dipped below freezing this winter?

I meant ground frost/grass frost. But all melted now!

This was forecasted for tonight only 2 days ago:

-1.6C has been the lowest from this spell which is the coldest temperature since last week 

Goes without saying that it belongs firmly in the latter category so far failing to get as cold as last May managed or indeed December which got down to -2C.

Today also marks three years since the temperature last reached -5C which is just ridiculous and can't imagine this has ever happened before

Does that not suggest that you were/are NOT forecast to have any frost, yet alone severe for your location this weekend? As has been mentioned the increased snow risk for other locations has understandably reduced the risk of severe frost. With -10 almost reached last night I don't think that graphic may prove too far wrong by the end of the weekend (except for the snow risk and its impact).

Loch glascarnoch had dropped to -9.7C as of 6am so might have dropped  little lower before the warmer up.

I think it was -7.9°C at 6am?

Sorry it was the minimum between 6pm & 6am. It might have been that low earlier in the night. 😊

http://www.met.reading.ac.uk/~brugge/amextremes.html 

totally overcast? 

And the lame excuse for a UK cold spell results in an overnight low of -3.1c.

Brilliantly crisp and sunny here yesterday (Sat), ground frozen throughout the day. One to treasure in this sunless winter, even if we didn't get any snow hereabouts.

My max yesterday was 0.6c.

Woke up this morning & the temp was 0.4c. By 9.30am, it'd shot up to 1.0c. Currently 1.4c.

Lying snow is slowly slushifying underneath.

 Lowest             -0.9c..       On  the  16th.

 Lowest Max       4.8c.         On  the  16th.

So as this so called "Coldest spell since 2013' has been a disappointment for many in terms of low temperatures and amounts of snow. Let's face it a cm or 2cm's of slushy mess and a low of +1c is nothing to write home about for mid winter so I was wondering if any of you believe the hurricane Alex which was brewing in the southern Azores put a big dent in our cold spell? Ie. reduced it's longevity and severity? Anyone? Without Hurricane Alex our weather pattern could have been different?? What do you think?

I feel there is potential for the next 3-4 days to be remarkably cold ones here in the SE with 2 possible ice days.

Today, it is currently cloudy bust still just 1C. Perhaps a max of 2-3 at best.

Tonight, skies are expected to be clear, allowing a sharp frost. Min -3 to -5?

Tomorrow should be an ice day in my rural location, despite the sunshine. The Met Office forecast: "Despite the sun, temperatures may stay below freezing in some rural areas."

On Wednesday some computer generated forecasts are indicating the risk of freezing fog and low cloud. To me, that could mean that temperatures could remain below freezing all day in places.

Thursday is also expected to be a cold one, although temperatures should climb above freezing, possibly for the first time since today.

So, certainly an interesting period, even if snow isn't on the cards! 

Temps IMBY have been rising steadily for the last 36+ hours. Not flying up, just slowly increasing. We had a high of 0.6c on Saturday, and it was actually quite steady around the 0.1c - 0.6c mark until the early hours of Sunday morning, when it began to inch up.

When I left this morning, it was at 2.7c.