Forecast Last Updated at Monday, September 21, 2020 at 6:52AM
If you look back at weather data from the last decade it's hard to find a comparable September cooldown. There was a few chilly days in 2017 and 2015, however both of those periods were partially rain-induced and nowhere was frost on the pumpkins. Today plays out much like Sunday and valley frost is around again tomorrow morning announcing the astronomical start of Fall at 9:31 AM. The sunny and dry pleasantries hold until late Thursday before the remnant moisture of Tropical Storm Beta moseys up from Texas.
Hi: 66 Lo: 42
Sunny after a few morning clouds; Continued cool for mid-September; Valley frost possible; East wind 5-15 mph, but light in valleys Mon. night
Hi: 73 Lo: 48
Mostly sunny; Autumn begins cooler than average; Light Wind
Hi: 75 Lo: 52
Partly cloudy; Slightly warmer; Light wind
Hi: 73 Lo: 57
Mostly cloudy; Cannot rule out a daytime shower; Steadier rain late Thursday night
Hi: 71 Lo: 60
Generally cloudy; Showers, maybe thunder
Saturday - Generally cloudy; Showers at times, maybe thunder; High in the lower 70s; Low in the lower 60s
Sunday - Mostly cloudy; Scattered showers; High in the lower 70s; Low near 60 degrees
Cool high pressure centered over New England is the dominant weather player for the first half of the week. Valley frost is going to be around again Tuesday morning, but the afternoon finishes warmer than today. Clouds start to increase Wednesday from the remnant circulation of Tropical Storm Beta which is hovering just off the central Texas coast today. The storm is so slow that even on Wednesday it will be near Galveston as a tropical depression.
The little engine that could... moisture from Beta reaches us late Thursday and continues through Friday and much of Saturday. A hefty looking cold front is on Beta's heels sometime early next week or possibly late in the weekend. Depending on the timing of the front we may get a 24-hour break between the two, but for now we kept showers going in scattered fashion Sunday.
Aside from Tropical Storm Beta, the Tropical Atlantic remains busy with Hurricane Teddy passing east of Bermuda today, then affecting Atlantic Canada by midweek. The old Hurricane Paulette has a chance to regenerate over the next few days as it passes south of the Azores. The Atlantic should finally quieten down in a few more days.
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