When does the average low drop above freezing where you live? (climate, snow)

[tvdxer]

And when does it rise back up above freezing again? For the purposes of this thread, the freezing point is 32F, and a low temperature has to be below 32F (at most 31.9F) to be considered "below freezing".

The average low at the Duluth International Airport, according to 1981-2010 data, drops below freezing on October 25th with an average minimum temperature for that date of 31.8F. For those using sources other than my own which only report to a rounded degree (<31.5F), the equivalent date is October 27th.

The average low rises above freezing on April 21st, which has an average low of 32.4F. For those in the previous scenario, the equivalent date would be April 18th (31.5F).

The equivalent dates for the harbor are October 29th and April 24th.

For Minneapolis, they are November 6th and April 4th; for Rochester, November 4th and April 5th; for Hibbing, October 8th and May 3rd; and for Embarrass, the coldest or one of the coldest stations in Minnesota, October 1st and May 13th (!)

My source is UNITED STATES CLIMATE NORMALS 1981-2010 , which has 1981-2010 daily average data for any location in the United States.

[deneb78]

For here.. our average low never drops below freezing.. it gets close though with 32.9°F (0.5°C) for a January average low at the airport (warmer downtown by a few degrees). Despite this, we still average 45.9 frost days a year at the airport and 19.6 downtown.

[B87]

It never does. We get about 25-30 frost days per year at Heathrow and <10 in central London.

[dunno what to put here]

Never

[nei]

You assumed in the other thread that many posters lived in places with highs below freezing, hopefully you'll get more responses this time.

The average low drops below freezing on November 6 and rises above freezing on April 7 (almost identical to Minneapolis!). Way too long...

In my hometown (Long Island), the average low drops below freezing on December 10 and rises above freezing on March 18.

[ben86]

Originally Posted by nei

You assumed in the other thread that many posters lived in places with highs below freezing, hopefully you'll get more responses this time.

The average low drops below freezing on November 6 and rises above freezing on April 7 (almost identical to Minneapolis!). Way too long...

In my hometown (Long Island), the average low drops below freezing on December 10 and rises above freezing on March 18.

I'm wondering, in places like yours that get a lot more freeze-thaw cycles than I'm used to (Hampstead averages 26 air frosts a year, though no date has an average low below freezing), is damage by physical weathering (i.e. potholes) a significant problem? In recent winters here (though probably not this one) there have been more damaged road surfaces than normally because of extra frost/snow - do engineers in colder climates have a way of working round the frostier winters or is it just accepted that when spring comes there'll be potholes to repair?

[dunno what to put here]

I know potholes and terrible road conditions are a problem in Canada, and roads in Scandinavia don't look all that good either.

I've been told roads in Montreal are so bad they look like Russia - lol

[nei]

Originally Posted by ben86

I'm wondering, in places like yours that get a lot more freeze-thaw cycles than I'm used to (Hampstead averages 26 air frosts a year, though no date has an average low below freezing), is damage by physical weathering (i.e. potholes) a significant problem? In recent winters here (though probably not this one) there have been more damaged road surfaces than normally because of extra frost/snow - do engineers in colder climates have a way of working round the frostier winters or is it just accepted that when spring comes there'll be potholes to repair?

You're assuming they repair them... There a few that were left in bad shape for years

Some of the roads get mangled rather badly, and some sidewalks do. This winter it hasn't been an issue; it's been warm, and when it does get cold all the water is no longer pooled on road surfaces. The last winters were bad.

[LondonAreaWeatherSummary]

On a monthly basis, the 30y average is above freezing, im sure if that was broken down into individual days a few would be marginally below freezing. A few frost prone sites like Santon Downham average a little below freezing, -0.6c for jan and -0.7c for feb IIRC, so im sure individual days at less frost prone sites also average sub zero lows.

[dunno what to put here]

Where do you get the figures for Santon Downham? I wasn't aware places in England had average lows below freezing, I know places in the Pennines do (such as Malham)