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The PHZM is based on "the average annual extreme minimum winter temperature." The 2012 map used historical data of the average annual minimum temperature from 1976 through 2005. The 2023 map uses ...
According to the National Weather Service, in 2024 the average annual temperature was 44.1°. This broke the record of 43.8° in 2012. Marquette WLUC.
The updated map is based on data from more than 13,000 weather stations between 1991 and 2020, nearly twice the number of weather stations used in the 2012 map, the USDA said in a news release.
DENVER (KDVR) — A new Colorado Water Conservation Board report shows that the state’s average annual temperature has risen by 2.3 degrees in 42 years.. While this might not sound like much ...