Many Minnesota locations experienced a warm September. In the Twin Cities, this past September was 5 degrees warmer than average with several days in the 90s earlier in the month.
As often is the case in October, however, the cold air over the arctic begins to dislodge and trek southward into the lower 48 states. While October can still bring very pleasant biking weather (especially early in the month) the battle between warm vs. cold gets played out more often.
One such battle takes place this weekend. By Sunday, high temperatures will be in the 50s for the first time since June 6 and snow begins to show it's face awfully close to Minnesota's international boarder.
Wednesday: Increasing clouds. H: 76° Wind: SE 10
Wednesday Night: Rain arrives. L: 58° Wind: SE 5-10
Thursday: Showers and thunderstorms. Cooler. H: 66° L: 54° Wind: NE 10-15
Friday: Mostly cloudy, showers. Windy. H: 65° L: 54° Wind: NE 15 G 20
Saturday: Getting colder throughout the day. H: 60° L: 43° Wind: NE 15 G 25
Sunday: Gradual clearing, wind subsides. Much cooler. H: 56° L: 45° Wind: N 10
The wind begins to pick up Friday into Saturday as a strengthening low pressure moves over Minnesota. The blue color on the map above indicates a cold pool of air rushing southward out of Canada. This is how we go from 70s to 50s just within a few days.
Snow also gets perilously close the Minnesota Sunday morning. Notice the pink/blue blobs over South Dakota and Winnipeg, Canada...that could be accumulating snow! Maybe even a dusting over northern Minnesota as the temps dip into the 30s Saturday night.
Snow in early October for northern MN isn't too unusual. The average first snowfall in north central Minnesota typically occurs in October, whereas snow in the metro is more likely around mid-late November.
Summer brings warm afternoons perfect for biking, but the summer heat and humidity can also spark thunderstorms and severe weather. Be prepared for any type of adverse weather headed your way with Aeris Pulse.
NWS Twin Cities Weather Story