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As someone already said, for London it is about -9C I think... that is far too cold for me.. days with highs below 0C are very rare here.. I think the lowest max this winter so far has been about 6C haha
If you can find a WRCC station nearby, the daily records are all available if you click "Daily Summary Stats" at the bottom, easy to find the lowest max.
The map is here, though a lot of the stations don't have data, not sure why. US COOP Station Map
For Madison, WI, lowest max is -14F/-25.6C in February 1996 and January 1912 and 1924.
As you go north and west the values get lower, I think the contiguous US record is -39F/-39.4C in Roseau, MN in 1899.
The US record is -66F/54.4C in Ambler, AK in 1989. Canada's probably beaten that, and obviously Russia, Greenland, and Antarctica have as well.
Thanks for the link. The high of 1F / -17C for the local station on January 19, 1994 is still the lowest max temperature since 1932 for my area. Those 3 other stations were slightly warmer on that day.
Not true. Downtown (USC)'s record is 43 F for a high on 1922-01-29, coincidentally the same day as the Knickerbocker Storm which assaulted Baltimore and Washington, DC; for Woodland Hills it is 40 F on the same calendar date in 1957, while even the Santa Monica pier has a record of 46 F on 1964-11-17. I am not going to look up the Inland Empire, but I would imagine the record to be even lower.
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