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Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year Record high °F (°C) 76 (24) 80 (27) 84 (29) 90 (32) 95 (35) 105 (41) 105 (41) 105 (41) 101
[48] [49] The pressure of 970.4 millibars in Lamar led to a new statewide low pressure record for Colorado. [50] On March 13 the tight pressure gradient produced widespread wind gusts above 60 mph (97 km/h)+), with a peak gust of 109 miles per hour (175 km/h) at Grand Prairie , [ 51 ] strong enough to flip airplanes at the municipal airport there.
Atmospheric pressure, also known as air pressure or barometric pressure (after the barometer), is the pressure within the atmosphere of Earth. The standard atmosphere (symbol: atm) is a unit of pressure defined as 101,325 Pa (1,013.25 hPa ), which is equivalent to 1,013.25 millibars , [ 1 ] 760 mm Hg , 29.9212 inches Hg , or 14.696 psi . [ 2 ]
The average window for measurable (≥0.1 in or 0.25 cm) snowfall is October 17 thru April 27, averaging 53.8 in (136.7 cm) of seasonal accumulation for 1981−2010. Denver averages 270 clear and partly cloudy days per year or 3200 hours of sunshine making it one of the sunniest major cities. [4]
That means arctic air is blasting over the US, while pressure changes and the motion of the polar vortex whip up high winds and create a perfect recipe for wintry weather.
The U.S. Standard Atmosphere is a set of models that define values for atmospheric temperature, density, pressure and other properties over a wide range of altitudes. The first model, based on an existing international standard, was published in 1958 by the U.S. Committee on Extension to the Standard Atmosphere, [ 9 ] and was updated in 1962 ...
Temperatures in the first three months of 2025 could feature an overall colder Northwest and milder-than-average South and East contrast, but there is some possible month-to-month variability ...
[62] [63] The responsible low pressure area was observed to finally move ashore mid-day on the 18, [64] and the Colorado low began forming shortly afterward. In the Rocky Mountains and Great Plains, blizzard warnings were issued March 17 in anticipation of a very heavy snowfall to be accompanied by strong winds. [65]