We will be in store for some big changes during the week of Thanksgiving, starting with the pair of upper-level weather systems that will traverse the country starting early in the week. The first will arrive in the form of a "cutoff" low pressure system Monday and Tuesday. A second wave will merge together with that cutoff low in the form of a stronger trough Wednesday. That will usher in a much colder air mass toward the last few days of November.
But will that cool-down come with any snow potential? Multiple ingredients have to come together to produce wintry weather, but two of the most basic ones are cold air and moisture. As the first system is overhead Monday and Tuesday, we will have quite a bit of moisture, but cold air will be significantly limited. This will lead to scattered showers from Monday afternoon into early Tuesday.
But the colder air will filter in by Wednesday. That also arrives with much drier air, which will limit precipitation potential. If even a little bit of moisture sticks around along Wednesday's cold front, a few snowflakes may try and mix in with some light rain showers. But with limited moisture, any precipitation would be limited at best Wednesday and Thursday.
Temperatures will start the week of Thanksgiving in the 50s Monday and Tuesday but will turn much cooler to end the week with afternoon highs likely in the 30s for Thanksgiving Day! That cooler trend will stick around to end the month, with a 60-70% chance of below average temperatures in the last few days of November, according to the latest outlook from the Climate Prediction Center.
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