U.S. CitiesCity-Data Forum Index
Happy Easter!
Go Back   City-Data Forum > General Forums > Weather
 [Register]
Please register to participate in our discussions with 2 million other members - it's free and quick! Some forums can only be seen by registered members. After you create your account, you'll be able to customize options and access all our 15,000 new posts/day with fewer ads.
View detailed profile (Advanced) or search
site with Google Custom Search

Search Forums  (Advanced)
View Poll Results: The first air frost. When?
September 7 12.07%
October 23 39.66%
November 14 24.14%
December 5 8.62%
January 4 6.90%
I live in a frost-free climate 5 8.62%
Voters: 58. You may not vote on this poll

Reply Start New Thread
 
Old 09-12-2013, 07:40 AM
 
Location: Long Island/NYC
11,294 posts, read 16,393,440 times
Reputation: 6045

Advertisements

The last 4 have occurred in early/mid December, so I'll side with the trend.
Reply With Quote Quick reply to this message

 
Old 09-12-2013, 07:48 AM
 
Location: Near the Coast SWCT
64,982 posts, read 47,303,288 times
Reputation: 10512
Quote:
Originally Posted by nei View Post
It's almost always October
For ground frost yes which is what we use here. I rarely see "air frost" being thrown around. What's the point of mentioning air frost if frost kills things "on the ground" .

In fact if you google "ground and air frosts" most of the links that come up are from the UK. lmao

It's more important to know when frost will occur on the ground as opposed to in the air only and not the surface.

So for air frost I believe you can say September we get that. No? You do hit low-mid 30s in September sometimes.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 07:52 AM
 
Location: Finland
24,268 posts, read 17,503,817 times
Reputation: 11103
If all other temps are measured at 2 meters, why should we make a exception regarding frost?
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 07:55 AM
 
3,578 posts, read 2,812,281 times
Reputation: 1616
mid-late october
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 07:58 AM
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
45,740 posts, read 39,621,992 times
Reputation: 14671
Quote:
Originally Posted by Cambium View Post
F
In fact if you google "ground and air frosts" most of the links that come up are from the UK. lmao
Yes, it's a British weather term, though seems like Europeans use it, too.

Quote:

So for air frost I believe you can say September we get that. No? You do hit low-mid 30s in September sometimes.
Air frost means the air temperature (2m ?) is 32°F or below. That does not usually happen in September.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 08:10 AM
 
Location: Seattle
1,248 posts, read 961,984 times
Reputation: 443
November.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 08:21 AM
 
Location: Vancouver, BC
9,669 posts, read 10,970,575 times
Reputation: 4041
Depends on which part of the city... can vary widely between early October to December. I'll vote November for the average.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 08:50 AM
 
Location: manchester
1,197 posts, read 813,746 times
Reputation: 264
It depends on the year.
It can be either in december, january or february.
Generally in January.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 09:04 AM
 
Location: Near the Coast SWCT
64,982 posts, read 47,303,288 times
Reputation: 10512
Quote:
Originally Posted by nei View Post
Yes, it's a British weather term, though seems like Europeans use it, too.



Air frost means the air temperature (2m ?) is 32°F or below. That does not usually happen in September.
Yup. 0C/32F or below would be considered a "freeze" here. Makes sense since 0C/32F is the freezing point, not frosty point. LOL

And yeah, freezes aren't common in September although it does happen time to time in areas of New England. In fact after mid September the records are under the freezing mark for many areas.
Reply With Quote Quick reply to this message
 
Old 09-12-2013, 09:04 AM
 
Location: Germany
505 posts, read 550,365 times
Reputation: 165
Can be anything from September to November (or maybe even December, although I don't really know, if that actually ever happened), but it will most likely be October since that's in ~ 90% of the cases the month with the first frost.
Reply With Quote Quick reply to this message
Please register to post and access all features of our very popular forum. It is free and quick. Over $68,000 in prizes has already been given out to active posters on our forum. Additional giveaways are planned.

Detailed information about all U.S. cities, counties, and zip codes on our site: City-data.com.


Reply
Please update this thread with any new information or opinions. This open thread is still read by thousands of people, so we encourage all additional points of view.

Quick Reply
Message:

Over $104,000 in prizes was already given out to active posters on our forum and additional giveaways are planned!

Go Back   City-Data Forum > General Forums > Weather
Similar Threads
Follow City-Data.com founder on our Forum or

All times are GMT -6.

© 2005-2018, Advameg, Inc.

City-Data.com - Archive 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35 - Top