|NAO Positive Phase|
|NAO Negative Phase|
Increasing cloud cover will allow for overnight lows to be in the upper 40's tomorrow evening. Monday looks to be a decent day, there is a slight chance of a shower late in the day but it will be a mostly cloudy afternoon with highs near 60. By Tuesday a system is going to lift out of the Southeast and head north. It will pass to our west so there is no chance for snow but rain will approach by early evening. The Northbridge-Nipmuc game looks to be ok, but the later playoff games may be impacted by rain. A shift in the timing by 3 hours throws a wrench in this forecast so stay tuned. Wednesday will start off as wet before drying and cooling down later in the afternoon.
The end of next week and the start of December looks to be average, with sunny skies and temperatures in the low 40's. For the longer range here is my look for December...
These are from NOAA's Physical Science Division US Climate Division data maps. While average temperatures across the analog years were in the 20-30 degree F range, that indicates to me a battle ground for rain and snow in the month. Precipitation looks likely for December so it is going to be a battle to see if cold or warm wins out, especially in the Blackstone Valley. Areas north of Worcester should be mainly snow.