That's common if you have new windows. I've seen it over a dozen times already this autumn.

Here it's 16.5C downstairs, 18C upstairs and 13.7C outside.

[referring to condensation on the outside of the window]

The incident I referred to was in 1964, single glazed windows and probably not altered since the house in question was built in the 1930s

18C inside so no heating needed but regarding to forecast of 16C for next 3 days, it need full sun to warm up in the Midlands area otherwise 12-13C at best under overcast conditions.  they predicting lot of sunshine from today to Sunday but not yet arrive.  If there sun inside will be 20-22C by now.

Grey Day Outside. 

22.5c In Lounge.

Sweatshirt is being worn.

Ah, that's much more impressive then! Can't say I ever saw condensation on the outside of the single-glazed kitchen windows here (from ~1983 to last year, when they were replaced).

To the here and now, the windows this morning are covered in condensation outside, I think because temperatures fell to 9C, but have now gone up to 11C (with humidity near 100%).

Inside it's 16.5C (same as ever, the heating clicked on a couple of hours back, briefly) and as the last post mentioned clothing, no need for a sweatshirt here, just a polo shirt (well, and trousers).

Like Gavin - have solid walls from 1830, so its cold. However, Ive not put the heating on yet, and still have the .stat at 15 degrees. Just wearing fleeces in the evening, and single glazed sash windows have shutters - open during the day for solar gain and close at night for minimising heat loss, keeps the house bearable. If it gets very chilly, I have an open wood fire, and I light that, which is surprisingly good at warming the room. The aga Keeps the kitchen warm, and occasionally if sitting still/ working - I’ll go for a warm up - tea, aga, wife and a doodle hug from Tess of the doodlevilles sorts the chills..

Those shutters really help a lot as it stop the temps from going below 18C here since we had not seen the sun for long time. Was supposed to be sunny here yesterday and this morning but failed so far so temps still steady at 18C bot ruse to 19.5c yesterday evening from our 2 computers and us in the living room warm up a bit with shutters closed early. Would had been 14-15C inside if no shutters was fitted.

Sunny outside. Sunshine through the lounge window.

No heating on. 21.7c.

21. c. heating on low.

17.3c with back door wide open - lovely spring day outside 

21.8 in S-facing room here, 19.7 with heat trickling into N side of house. Still no heating on, but it can't last!

Heating on for 2 hours this morning, the first time I've indulged myself rather than visitors, after 16C first thing. Took the opportunity to go round, check the radiators and tweak the thermoregulator valves

Yesterday used 3m3 of gas which is the most of the season, combination of cold and to heating to indulge visitors, was something like £3.60. Today it is colder but probably will use about the same. Managed with just one blast this morning despite being 6c outside.

Also had a 5pm to 6pm window where we were paid not to use electricity last night, so participated in the experiment. Used 0.120KWH so just waiting to see what the saving was compared to normal. Prepared food early and only had a couple of lights on during that period.

Sounds a bit obsessive, but I just like measuring things, that is why I like the weather. 

21.5c. Today. Some sun shine through the window

An hours indulgence here too this morning before we all left for work and school. That one hour of heating pushed the temperature from 15.8c to 17.0c. 

The heating has been used for 10 hours this month.

Until this year we were the family that would have the thermostat firmly rooted to 21c all day, knocking it back to 19c at night. Utter wastefulness.

Around 30 hours' usage here this month, with the thermostat set to 16.5C when I'm here and 14C when I'm out.

It's presently 17.5, so the heating won't be on for a while.

(When my dad was still around, the themostat was set to 21 or 22. Maybe I'll feel the chill as well when I get to my mid-60s, assuuming I live that long!)

Westerly breeze making it feel cold. Do not know what I shall do when the easterlies start. 

That will eat some of the funds away.

22.0c with the heating coming on now and then. My wife and I are both elderly but still need to watch where the money goes. Even with government funds.