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Old 09-28-2020, 09:52 AM
 
Location: Lake Huron Shores
1,106 posts, read 196,514 times
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When I’m talking about average first and last day below 10 C I’m referring to the high temps.
My last day below 50 F (10 C) is sometime in late April or early May. I’d say April 24th is a good estimate.
My first day below 50 F (10 C) is usually at the tail end of October, and sometimes in early November. October 26th is a good estimate.
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Old 09-28-2020, 10:01 AM
Status: "333 days to go." (set 21 hours ago)
 
Location: Sheffield, England
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Average max reaches 10°C about 20th March.
Average max falls below 10°C about 12th November.
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Old 09-28-2020, 10:07 AM
 
Location: Lake Huron Shores
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Quote:
Originally Posted by Eman Resu VIII View Post
Average max reaches 10°C about 20th March.
Average max falls below 10°C about 12th November.
Does that correspond with the last and first 10 C day you see every year ?
This is similar to the average first and last freeze, which don’t always line up with the time when average low drops below freezing.
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Old 09-28-2020, 10:11 AM
Status: "333 days to go." (set 21 hours ago)
 
Location: Sheffield, England
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Quote:
Originally Posted by FrozenI69 View Post
Does that correspond with the last and first 10 C day you see every year ?
This is similar to the average first and last freeze, which don’t always line up with the time when average low drops below freezing.
Not really, because seasonal temperature variation isn't that large, so we get 10°C regularly in winter (4-5 days per Dec, Jan, Feb).
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Old 09-28-2020, 11:09 AM
 
Location: Palm Beach Gardens, FL
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NYC’s first day of the fall below 50°F usually occurs around November 10, which correlates pretty strongly with the first freeze, which occurs on November 15, on average, in NYC. However, 50°F and even 60°F temperatures happen fairly regularly in January, even though temps average about 40°F in January. I’d say we start to average 50°F in late February or early March, and the last freeze happens in mid-March. And in recent years, about half of January nights stay above freezing. We still get cold blasts down to 10-15°F on the coldest night, but winters are definitely warming.
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Old 09-28-2020, 11:11 AM
 
Location: Top of the South, NZ
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Only have the stats here for the last two winters.

2019: June 5th (9C)was the first, and August 10th (9.9C) was the last - 2 days below 10C

2020: No maximums below 10C. Today is forecast for 11C, so this is likely the last chance for a sub 10C high.
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Old 09-28-2020, 04:20 PM
 
Location: Etobicoke
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Third week of October and end of April/first week of May.
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Old 09-28-2020, 04:30 PM
 
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For us, according to our official weather station, our first day of the year that averages a 50 (10) maximum is February 10. The last day is November 29.
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Old 09-29-2020, 02:54 AM
 
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Melbourne, Australia generally only has a couple of such days a year, although in the last 20 years or so there have only been 7 such days ( since 2000 ).
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Old 09-29-2020, 03:54 AM
 
Location: Bologna, Italy
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I'm not sure, but I would guess sometime around mid-november to sometime in mid february.



That said we have days with +10c highs in december and January as well almost every year.
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