Making weather predictions would be a whole lot easier if the seasons would just behave the way they were supposed to. Winter doesn’t officially begin until December 21 this year, but that doesn’t mean wintry weather won’t arrive ahead of schedule.
So what’s the earliest date each year that it can snow in North America?
Actually, that’s a trick question. Snow can fall at any time of the year, including summer, especially at high elevations. For example:
The “S” Word: Snow Falling in Summer?
- On July 26, 2015, an intense cold front descended on the northern Rockies, bringing several inches of snow to three US states: Montana, Idaho, and Wyoming.
- August 23, 2015, residents of Calgary, Alberta Canada woke up to a snow covered ground. In fact, many reported on social media that after this incident, they had officially seen snow on the ground during every month of the year in this region.
- June snowfalls were reported in Hawaii and the Northern Rockies.
- On July 10th and 11th, snow was reported in parts of Montana, Idaho, and Wyoming. In Yellowstone National Park, there was enough new snow to build a snowman above 10,000 feet!
- August 18th, snow and sleet hit parts of Montana and Colorado due to a cold front moving in from Canada.
- Snow coated a few spots in the northern Rockies in early July, illustrating that flakes can fly through the air at any time during the summer months in the mountains in this region.
- August 27, 2018 – Winter weather advisories were issued by the National Weather Service for parts of the Rockies of Montana and Wyoming; an inch of snow fell at Glacier National Park.
- June 8, 2019, Montana
- September 30, 2019, record-setting September snowstorm hit northcentral Montana.
When will the first snow arrive in your neck of the woods? Find out in our long-range forecast!