I was in Calgary in May 2002. When we arrived, temps were nudging 80f - but there were some piles of snow still on the ground (albeit melting rather quickly!) from a heavy fall a few days previously. 6/7 days later, the temp dropped off to barely above freezing and, overnight, around 9" of snow fell. By the time we departed a week later, temps were back up to mid-70's.
I love Canada!
Me too - not one day or night is ever the same weather wise unless you're in Vancouver or Victoria etc!?
As for Denver - It will be back up in 60's and maybe 70's in Denver (20 or so degrees C!) by the weekend?
I am sure if people living there don't get a headache with altitude sickness then surely 29c to -3c and up to 21c the day after would be enough to make them feel a bit sick and tired?
I also heard Ulan Bator in Mongolia are prone to rapid temperature changes by day and night and it's high up on a plateau like Denver. I also heard Madrid (high on a plateau) get's cold too but not exceptionally cold but does share same Latitude with Denver CO.
I remember in 2013 (Nov) in Madrid it was 18-21c and sunny and two days later is was 6 or 7c with a stiff northerly wind!!
Home Location - Kellands Lane, Okehampton, Devon (200m ASL)
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Sean Moon
Magical Moon
www.magical-moon.com