The Summer climate (July/August)
brings low humidity, warm temperatures and extended daylight
hours lasting until 11:00 p.m. at the height of the summer
equinox.
The Autumn season (Sept/Oct) sees a diminishing of the daylight
hours and warm days with cooling evening winds. The first
snows beings to fall on the Canadian Rockies sometime in November
(though it can and does snow whenever nature dictates - we
have had major blizzards leave several feet of snow in mid-summer).
The snow is usually staying for the winter by Nov. with the
first of several winter storms coming in from the Pacific
providing the Rockies with its blanketing of snow and the
arrival of ski season. Sometime during the month of December/January
the Rockies usually experience a brief two week cold snap
with temperatures plummeting into the low -30 degree C/F range
but the average temperature during the winter months is around
-12º C (6º F).
Luckily throughout the winter months, Banff and areas west
and south regularly receive a welcome weather phenomenon,
Chinooks, which can produce spring like temperatures in a
matter of hours.
Spring begins sometime in March but the snow stays until
mid April when rain and warming temperatures melt winter away
from the valleys - snow does not leave the mountain passes
until mid summer. May and June are the Rockies rainy periods
though we have awoke in May to foot of snow - While the average
precipitation is relatively low during this time, snowmelt
pushes the rivers to their crests.
The UV rating for Banff and surrounding area is usually high
to extremely high throughout the year. Because of our altitude
and the suns angle of incidence in our section of the world,
people tend to burn much faster than usual -- bring along
sunscreen, a shade hat and a pair of sunglasses.
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