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Old 11-07-2010, 09:46 PM
 
Location: Toronto
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What regions of the world have at least a month of summer with maximums averaging 40C (104F). Right off the top, I can name the cities of Phoenix, Dubai and Baghdad, and the so far known hottest average place in the world, Dallol, Ethiopia, which is apparently currently uninhabited (it's stats are shocking ).

It seems like they are all generally arid deserts with little vegetation and are around maybe 10N to 30N.

I would think the American Southwest and Mexico, the Middle East such as the Arabian Peninsula, and Iraq, as well as East Africa such as Somalia and Ethiopia fit. Pakistan and I believe, parts of India make the cut too. The deserts of Australia as well. Any others I missed?
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Old 11-08-2010, 11:40 AM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

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Location: Western Massachusetts
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Quote:
Originally Posted by Stumbler. View Post
What regions of the world have at least a month of summer with maximums averaging 40C (104F). Right off the top, I can name the cities of Phoenix, Dubai and Baghdad, and the so far known hottest average place in the world, Dallol, Ethiopia, which is apparently currently uninhabited (it's stats are shocking ).

It seems like they are all generally arid deserts with little vegetation and are around maybe 10N to 30N.

I would think the American Southwest and Mexico, the Middle East such as the Arabian Peninsula, and Iraq, as well as East Africa such as Somalia and Ethiopia fit. Pakistan and I believe, parts of India make the cut too. The deserts of Australia as well. Any others I missed?
I just looked up the stats for Dallol and at first thought I was looking at stats for some of the hellish fake climates some posters make.

You forgot the Sahara Desert. And Death Valley is at 36N, so I think the 10N to 30N is a bit too narrow.
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Old 11-08-2010, 01:08 PM
 
Location: Yorkshire, England
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Parts of the Indian Punjab probably average 40C in summer but are not desert because of the monsoon. I don't think anywhere in Europe is quite that hot, but how about central Asia, though maybe most of it is too high up? I bet some places in southern Russia had a month of 40C this year - even Moscow at 57N had a month of daily 35-38C maxes
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Old 11-08-2010, 01:32 PM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

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Location: Western Massachusetts
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Quote:
Originally Posted by ben86 View Post
Parts of the Indian Punjab probably average 40C in summer but are not desert because of the monsoon. I don't think anywhere in Europe is quite that hot, but how about central Asia, though maybe most of it is too high up? I bet some places in southern Russia had a month of 40C this year - even Moscow at 57N had a month of daily 35-38C maxes
Mazar-i-Sharif in Afghanistan has a vearge high of 40C; it's also rather north (36N). Armitsar in Punjab averages 40C as well.
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Old 11-08-2010, 01:43 PM
 
Location: Toronto
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I guess at lower latitudes it seems to be limited by the moisture of the equatorial climates, but I wonder how far north regular 40C highs can go -- it seems it goes up to around mid to high latitudes of 30s N. I wonder if it goes up to at or around the 40s N.
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Old 11-08-2010, 02:47 PM
 
Location: Brisbane, Australia
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The Pilbara Region in Australia, although no major settlements along there.

Aside: Just looking at Marble Bar's 7 day forecast (maximums, in celcius):

Tue: 44
Wed: 45
Thu: 42
Fri: 41
Sat: 41
Sun: 40
Mon: 40

Geez it is positively "chilly" by the start of next week
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Old 11-08-2010, 03:35 PM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

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Location: Western Massachusetts
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Quote:
Originally Posted by Stumbler. View Post
I guess at lower latitudes it seems to be limited by the moisture of the equatorial climates, but I wonder how far north regular 40C highs can go -- it seems it goes up to around mid to high latitudes of 30s N. I wonder if it goes up to at or around the 40s N.
I can't find anything north of 36°N. The furthest north weather station I found with an average high 40°C or higher was Beaver Dam, Arizona at a latitude of 36°54'. There may be a place in the Middle East or Central Asia further north as I couldn't find as many stations. It's unlikely though, because at that latitude (are further north) the Middle East, Central Asia and the desert parts of the western USA are mountainous and are mostly at high elevations.
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Old 11-08-2010, 03:39 PM
 
Location: Yorkshire, England
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Quote:
Originally Posted by Stumbler. View Post
I guess at lower latitudes it seems to be limited by the moisture of the equatorial climates, but I wonder how far north regular 40C highs can go -- it seems it goes up to around mid to high latitudes of 30s N. I wonder if it goes up to at or around the 40s N.
I don't know about regular 40C highs but I've just been having a look at the most northerly 40C ever recorded on Wikipedia 2010 Northern Hemisphere summer heat wave - Wikipedia, the free encyclopedia and I think I've found Ryazan at 54N which reached 40.1C this summer.

There have been high 30s even above the Arctic Circle but those extra couple of degrees prove difficult. I'm impressed by the 45C at Yellow Grass, Sask. way back in the 1930s as high as 49N. There was apparently a 41.7C at North West River, Newfoundland at 53N, but the highs of 18C the day before and the day after make it sound very dodgy to me.
Daily Observation Data | Canada's National Climate Archive
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Old 11-08-2010, 03:46 PM
nei nei won $500 in our forum's Most Engaging Poster Contest - Thirteenth Edition (Jan-Feb 2015). 

Over $104,000 in prizes has already been given out to active posters on our forum and additional contests are planned
 
Location: Western Massachusetts
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This thread is interesting:

Viewing a thread - The Latitude Temperature Challenge... (http://www.ukweatherworld.co.uk/forum/forums/thread-view.asp?tid=38076&posts=36#M560692 - broken link)

I can't imagine 40°C in Newfoundland.
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Old 11-08-2010, 07:06 PM
 
Location: In transition
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Verkhoyansk at 67N has recorded 37C in summer and -70C in winter. That's a spread of over 107C!
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