The "Cooler" Valley
By Nicholas DiGiovanni on April 28, 2012, 10:05pm
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When talking about night time lows, the valleys (which are also known as the cooler neighborhoods) tend to be noticeably cooler than other towns. Many people would blindly think that Northern CT is always colder than Southern CT- it tends to be the other way around for this valley.
From almost a year of research (topography and temperature archives/observations), I was able to look at personal weather stations to determine which connecting towns would make up this cooler valley. This includes: North Haven, Hamden, South Woodbridge, Orange, Ansonia, and a big area between the towns of Monroe, Newtown, Oxford, and Southbury, near the Kettletown State Park.
Obviously, not every part of these towns are cooler, many sections- especially the lower elevations would see the coldest temps. It is so noticeable that I had to be specific with Woodbridge. The North end of Woodbridge and Seymour could be 10-15 degrees warmer on nights than the south end when we are dealing with valley effect temps. This is because the elevation is much higher on the North end of Woodbridge. There are no weather stations in Northford, but because the elevation rises 200'-700' from North Haven, I can tell that that is the cutoff- also with the help of Durham which has 5 personal weather stations that could be in the low 40's when these "valley temps" are in the upper 20's.
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