AccuWeather reports progressively colder air will lead to the first snowflakes and snowfall of the season, as well as the first freeze in parts of the Great Lakes, Northeast and neighboring Canada this weekend.

Following warm weather during the past six weeks, some people spending time outdoors will be shivering this weekend. The accompanying frost and freeze can damage plants that are still thriving due to the recent warmth.

A freeze and frost is likely Saturday night and Sunday night. A widespread killing freeze is possible especially on Sunday night. The forecast from the National Weather Service:

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Today: Mostly sunny, with a high near 61. West wind 6 to 13 mph.

Friday Night: Partly cloudy, with a low around 38. West wind 6 to 8 mph.

Saturday: A slight chance of showers. Mostly sunny, with a high near 50. Northwest wind 8 to 16 mph. Chance of precipitation is 20%.

Saturday Night: Partly cloudy, with a low around 31. Northwest wind 5 to 7 mph.

Sunday: A slight chance of showers after 11am. Partly sunny, with a high near 46. Chance of precipitation is 20%.

Sunday Night: Mostly clear, with a low around 27.

Monday: Sunny, with a high near 49.

Monday Night: Mostly clear, with a low around 33