We've been following colder air for this coming weekend and along with it a chance for snow. Well, we're also watching for snow chances into next week.
After having highs above average for many days during the last two weeks of October, it's time for the colder air to come back. The big question is whether this throws us into winter or not. It's something that doesn't happen very often, but it does happen.
No, the Halloween blizzard of 1991 didn't throw us into winter as we had numerous days with highs in the 40s and 50s in November. But, when the cold air came in early November in 2000, we were in for the long haul. Here's what I mean.
The first 6 days on November in 2000 had an average high of 54 degrees, that includes a high of 40 on the 6th. After that, Sioux Falls never saw the thermometer get above 40 as the city had an average high of 28 for the rest of the month! And that month dropped almost 20 inches of snow in Sioux Falls.
Temperatures remained well below average through much of that winter and into early spring as 57.5" of snow fell.
We'll see what this year brings.