Weather in SW USA in Dec/Jan
My 8 weeks of hour-building was in December/Jan 2001/2002.
In 8 weeks, I had three days when I had to cancel flights. One was a cross-country flight where the cross-wind at the destination was outside my limits - I could have flown locally if I'd wanted. One was a mountain cross-country where the cloud-base was below the mountain tops - I could have flown locally if I'd wanted. The final one was an aerobatic flight where the cloud base was too low for aeros - I could have done a local, non-aerobatic flight if I'd wanted.
I guess the weather doesn't get very much better than that.
FFF
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