September CET

[kold weather]

14.2C is my punt.

[Nick F]

I think the jet stream will finally swing Northwards and pressure will generally become higher from the South again at times with more warmth.

... so a CET of 14.4C please.

[VillagePlank]

I think the jet stream will finally swing Northwards and pressure will generally become higher from the South again at times with more warmth.

... so a CET of 14.4C please.

You use my chart didn't you? Admit it :lol:

[AtlanticFlamethrower]

13.9C.

Run of Indian Summers to end? (Or return in October?)

[stricklands]

14.7 please

[SteveB]

below average month for me, which will hopefully set the trend for the rest of Autumn and Winter.

13.0c

[Great Plum]

14.8

[summer blizzard]

SteveB: 13C

Snowmaiden: 13.1C

Optimus Prime: 13.5C

Steve Murr: 13.5C

Snowyowl9: 13.7C

AtlanticFlamethrower: 13.9C

Bottesford: 14C

Snowman2006: 14C

Stargazer: 14.1C

kold weather: 14.2C

Ian Brown: 14.4C

Windswept: 14.4C

Anti-Mild: 14.4C

Nick F: 14.4C

Wilson: 14.5C

Stratos Ferric: 14.6C

Bham Chris: 14.7C

Stricklands: 14.7C

Great Plum: 14.8C

AtmosFear: 14.9C

Blast From The Past: 15.1C

Summer Blizzard: 15.2C

Scorcher: 15.4C

The PIT: 15.5C

Rollo: 15.6C

Kippure: 16C

[Hiya]

13.6

[beng]

I would say slightly below average based on synoptics - however the locally warm sea temps will mostly likely prevent this IMO - so I go for

13.8.

[Thundery wintry showers]

SteveB: 13C

Snowmaiden: 13.1C

Optimus Prime: 13.5C

Steve Murr: 13.5C

Snowyowl9: 13.7C

AtlanticFlamethrower: 13.9C

Bottesford: 14C

Snowman2006: 14C

Stargazer: 14.1C

kold weather: 14.2C

Ian Brown: 14.4C

Windswept: 14.4C

Anti-Mild: 14.4C

Nick F: 14.4C

Wilson: 14.5C

Stratos Ferric: 14.6C

Bham Chris: 14.7C

Stricklands: 14.7C

Great Plum: 14.8C

AtmosFear: 14.9C

Blast From The Past: 15.1C

Summer Blizzard: 15.2C

Scorcher: 15.4C

The PIT: 15.5C

Rollo: 15.6C

Kippure: 16C

I don't like to nitpick too much, but I thought Ian Brown went for 14C, not 14.4C.

[tugmistress]

well i am going to be just plain silly here, you can have the average temp for sept up here last year, plus 3c so i am going to go for 14.4c

[tinybill]

well with tread now with people saying winter could come early this year temp for sept 11.0 c

[shuggee]

14.3ºC for me please

[summer blizzard]

Tinybill: 11C

SteveB: 13C

Snowmaiden: 13.1C

Optimus Prime: 13.5C

Steve Murr: 13.5C

Hiya: 13.6C

Snowyowl9: 13.7C

Beng: 13.8C

AtlanticFlamethrower: 13.9C

Bottesford: 14C

Snowman2006: 14C

Ian Brown: 14C

Stargazer: 14.1C

kold weather: 14.2C

Shuggee 14.3C

Windswept: 14.4C

Anti-Mild: 14.4C

Nick F: 14.4C

Tugmistress: 14.4C

Wilson: 14.5C

Stratos Ferric: 14.6C

Bham Chris: 14.7C

Stricklands: 14.7C

Great Plum: 14.8C

AtmosFear: 14.9C

Blast From The Past: 15.1C

Summer Blizzard: 15.2C

Scorcher: 15.4C

The PIT: 15.5C

Rollo: 15.6C

Kippure: 16C

Thankyou for bringing that to my attention.

So far, it seems that a slightly above average September is favored by most.

[The Abominable Snowman]

I think fairly close to average temps, quite high rainfall due to active Atlantic. 13.9ºc

[Optimus Prime]

The average for the 31 users that have made a guess is 14.2c. So the majority are going for a slightly warmer than average month. Only 6/31 are going for a cooler one.

[summer blizzard]

Tinybill: 11C

SteveB: 13C

Snowmaiden: 13.1C

Optimus Prime: 13.5C

Steve Murr: 13.5C

Hiya: 13.6C

Snowyowl9: 13.7C

Beng: 13.8C

AtlanticFlamethrower: 13.9C

The Abominable Snowman: 13.9C

Bottesford: 14C

Snowman2006: 14C

Ian Brown: 14C

Stargazer: 14.1C

kold weather: 14.2C

Shuggee 14.3C

Windswept: 14.4C

Anti-Mild: 14.4C

Nick F: 14.4C

Tugmistress: 14.4C

Wilson: 14.5C

Stratos Ferric: 14.6C

Bham Chris: 14.7C

Stricklands: 14.7C

Great Plum: 14.8C

AtmosFear: 14.9C

Blast From The Past: 15.1C

Summer Blizzard: 15.2C

Scorcher: 15.4C

The PIT: 15.5C

Rollo: 15.6C

Kippure: 16C

[Roger J Smith]

Looks like a very warm start, there's bound to be a few cooler days so somewhere between normal and the record high seems logical, I see a space at 15.0 so cram me in there.

[Terminal Moraine]

I'll attempt to employ reverse psychology and go for 14.9c.

T.M

[ScandiHigh]

14,7 for me please

ScandiHigh

[NL]

14.6oC... for me..

[senior ridge]

Changeable and windy then settling down towards the end of the month

Possible spanish plume, therefore I go with 14.7c

[summer blizzard]

Tinybill: 11C

SteveB: 13C

Snowmaiden: 13.1C

Optimus Prime: 13.5C

Steve Murr: 13.5C

Hiya: 13.6C

Snowyowl9: 13.7C

Beng: 13.8C

AtlanticFlamethrower: 13.9C

The Abominable Snowman: 13.9C

Bottesford: 14C

Snowman2006: 14C

Ian Brown: 14C

Stargazer: 14.1C

kold weather: 14.2C

Shuggee 14.3C

Windswept: 14.4C

Anti-Mild: 14.4C

Nick F: 14.4C

Tugmistress: 14.4C

Wilson: 14.5C

Stratos Ferric: 14.6C

Northern Light: 14.6C

Bham Chris: 14.7C

Stricklands: 14.7C

ScandiHigh: 14.7C

Senior ridge: 14.7C

Great Plum: 14.8C

AtmosFear: 14.9C

Terminal Moraine: 14.9C

Roger J Smith: 15C

Blast From The Past: 15.1C

Summer Blizzard: 15.2C

Scorcher: 15.4C

The PIT: 15.5C

Rollo: 15.6C

Kippure: 16C

[Roger J Smith]

Hey, by the way, this term "Indian summer" as you probably know is widely used in North America but we wouldn't use it for a warm September. The supposedly "official" definition of Indian summer is a spell of warm autumn weather that comes after the first frost and usually when the leaves are turning full colour, so very late September or most of October is when Indian summer might set in, sometimes for weeks and some years not at all (thinking of the Great Lakes region where the term is widely used).

A warm early September is just when it's too hot to go back to school. It's pretty unusual to hear the term over here until after the fall equinox at the very earliest.

The further south you go into the U.S., the more likely it is that the term would be applied to early November weather. One of the hallmarks of true Indian summer is that the days are quite hazy and the nights are foggy. Some say that the term was coined in the 18th century when east coast residents noticed the annual phenomenon of massive clouds of smoke drifting east above their region, something they rightly or wrongly attributed to the practice of the Indian tribes in the Ohio and Tennessee valley regions burning off brush in the spells of good weather in the autumn, therefore the connection between the haze and the Indians. No idea if this is scientifically sound or not. You would have to suppose also that in some years there would be massive wildfires raging further west, in regions unknown to colonial America.