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Old 07-01-2016, 09:45 AM
 
Location: Broward County, FL
16,191 posts, read 11,387,909 times
Reputation: 3530

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Quote:
Originally Posted by Ariete View Post
Ok, the 25th had a proper diurnal range without interruptions (the weather station has some issues). The temps:

20 hours: 20.6C
22 hours: 19.5C
sunset
00 hours: 16.6C
02 hours: 15.2C
04 hours: 14.0C
sunrise
06 hours: 16.9C
08 hours: 20.4C
10 hours: 23.1C
12 hours: 24.9C

I'm sorry, I can't get better results, but up here the temp is usually vastly higher at 7:00 as the sun's been up for already almost 3 hours.
Point still stands though. Plus, aren't you awake in the evening when temps are cooling? A colder overnight low would make a difference during the evening too.

 
Old 07-01-2016, 09:49 AM
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Location: Western Massachusetts
45,983 posts, read 53,595,264 times
Reputation: 15184
Quote:
Originally Posted by Ariete View Post
Ok, the 25th had a proper diurnal range without interruptions (the weather station has some issues). The temps:

20 hours: 20.6C
22 hours: 19.5C
sunset
00 hours: 16.6C
02 hours: 15.2C
04 hours: 14.0C
sunrise
06 hours: 16.9C
08 hours: 20.4C
10 hours: 23.1C
12 hours: 24.9C

I'm sorry, I can't get better results, but up here the temp is usually vastly higher at 7:00 as the sun's been up for already almost 3 hours.
Was the afternoon high about 25°C. It looks like you don't have much warmup past 10 am, unlike us.

Quote:
Point still stands though. Plus, aren't you awake in the evening when temps are cooling? A colder overnight low would make a difference during the evening too.
Here, cooling is slow until just before sunset. But then the speed of the evening drop depends on dewpoints which is usually related to overnight lows. It normally won't be close to the low until late into the night
 
Old 07-01-2016, 09:52 AM
 
Location: Finland
24,128 posts, read 24,855,047 times
Reputation: 11103
Quote:
Originally Posted by alex985 View Post
Point still stands though. Plus, aren't you awake in the evening when temps are cooling? A colder overnight low would make a difference during the evening too.
Depends. As I'm near a body of water and humidity rises quickly in the evening, you see the deep temperature curve drop only very late during the night. Remember, our sunset is at 23:01 today.
 
Old 07-01-2016, 09:54 AM
 
Location: Broward County, FL
16,191 posts, read 11,387,909 times
Reputation: 3530
Quote:
Originally Posted by Wildcat15 View Post
I used to put a little too much emphasis on lows, thinking of around 10pm-midnight rather than sunrise when it would likely occur. But if you are out at sunrise it makes a difference, especially since you feel colder right after waking up. It's often well above the low by the time I wake up.
True. I try to put emphasis on both. An 88/65 day is a hell of a lot different from an 88/76 day for example.
 
Old 07-01-2016, 09:55 AM
 
Location: Broward County, FL
16,191 posts, read 11,387,909 times
Reputation: 3530
Quote:
Originally Posted by nei View Post
Was the afternoon high about 25°C. It looks like you don't have much warmup past 10 am, unlike us.



Here, cooling is slow until just before sunset. But then the speed of the evening drop depends on dewpoints which is usually related to overnight lows. It normally won't be close to the low until late into the night
Quote:
Originally Posted by Ariete View Post
Depends. As I'm near a body of water and humidity rises quickly in the evening, you see the deep temperature curve drop only very late during the night. Remember, our sunset is at 23:01 today.
But again, my question is wouldn't it be noticeably cooler at say, 21:00 when you're going from a daytime high of 20 C to an overnight low of 5 C vs. the same high but going to a low of 12 C?




And Ariete I'm always astonished at how much your daylight varies through the year. I always forget you're at 60 N.
 
Old 07-01-2016, 09:58 AM
 
Location: 30461
2,508 posts, read 1,854,525 times
Reputation: 728
Quote:
Originally Posted by alex985 View Post
True. I try to put emphasis on both. An 88/65 day is a hell of a lot different from an 88/76 day for example.
I was tracking the Tampa forums a while ago. They have their own weather thread on there that talks about the "reverse west windflow". It makes a huge difference in their lows, making them a lot warmer than they would be otherwise. We're talking about a low of 72 F vs a low of 82 F. Amazing how much impact wind direction has on their temps at night thanks to those 88 F Gulf water temps.
 
Old 07-01-2016, 10:03 AM
 
Location: Finland
24,128 posts, read 24,855,047 times
Reputation: 11103
Quote:
Originally Posted by nei View Post
Was the afternoon high about 25°C. It looks like you don't have much warmup past 10 am, unlike us.
26.0C. Our biggest rise in temperatures is between 8-10 hours. Depending on the humidity and cloud cover the drop is the largest between 21:00-midnight.

Quote:
Originally Posted by alex985 View Post
But again, my question is wouldn't it be noticeably cooler at say, 21:00 when you're going from a daytime high of 20 C to an overnight low of 5 C vs. the same high but going to a low of 12 C?




And Ariete I'm always astonished at how much your daylight varies through the year. I always forget you're at 60 N.
No. Those examples are typical in May when the diurnal range is large. In summer those 20C/5C ranges are pretty much impossible if there isn't a drastic sudden change in weather patterns.

Yeah, the amount of daylight fools many. I don't like it, it's too much. But anyway, in the height of summer Helsinki has a higher UV than Thessaloniki, Greece (40.5N) between 5:00 and 10:00 and again from 18:00 to 21:30, before/after when the UV is essentially 0. The time when the UV is over 3 is almost the same in both locations, though being almost 20 degrees apart. Thessaloniki has it for less than half an hour in the evening.

Last edited by Ariete; 07-01-2016 at 10:16 AM..
 
Old 07-01-2016, 10:05 AM
 
Location: South Jersey
14,497 posts, read 9,453,047 times
Reputation: 5251
Quote:
Originally Posted by alex985 View Post
I don't understand why people on here like to ignore overnight lows so much. You experience it every morning. I notice it's always warm biased posters who do this.
Agree

Important factor pertaining to sleepable nights
 
Old 07-01-2016, 10:09 AM
B87
 
Location: Surrey/London
11,769 posts, read 10,619,748 times
Reputation: 3099
Quote:
Originally Posted by nei View Post
Was the afternoon high about 25°C. It looks like you don't have much warmup past 10 am, unlike us.



Here, cooling is slow until just before sunset. But then the speed of the evening drop depends on dewpoints which is usually related to overnight lows. It normally won't be close to the low until late into the night
A typical July day here would have the following temps. The warmup is slow between 0600-0900, and the cool down is slow from 1600-1900.

00: 18c
02: 16c
04: 15c
06: 14c
08: 17c
10: 19c
12: 22c
14: 23c
16: 24c
18: 23c
20: 21c
22: 19c
 
Old 07-01-2016, 10:11 AM
 
Location: Seoul
11,554 posts, read 9,347,961 times
Reputation: 4660
Quote:
Originally Posted by alex985 View Post
I don't understand why people on here like to ignore overnight lows so much. You experience it every morning. I notice it's always warm biased posters who do this.
Idk, I don't care about overnight lows in the summer unless they're really uncomfortable (high 70s and warmer or low 50s and colder. Its mostly annoying in Upstate NY in winter and spring
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