Thunderstorms will end tonight and the heat wave is over!



Morning clouds have given way to sunshine. This afternoon will be hot and humid, temperatures will top out in the mid to upper 80s. IF 90 is achieved at Windsor Locks, we'll have our 4th heat wave of the year and our 31st day 90 or higher.

Tomorrow will be hotter than today, also quite humid. Temperatures likely well exceed 90 and heat index values could get close to the century mark. Also for Thursday, there will be a chance for isolated to scattered thunderstorms during the afternoon and evening… heavy rain and lightning can be expected with any that develop. There is a chance for strong to severe storms, the main threat will be a damaging wind.

Behind the front that brings the storm threat tomorrow, we’re still on track for a cooler, less humid weekend! Saturday night looks to be the coolest once we've experienced in quite some time. If temperatures go into the 40s, it will be the first time for them to do so since June 26th!

Meteorologist Mark Dixon



Yesterday wasn’t quite as hot as Monday, but temperatures still managed to reach 90 degrees or higher in many locations, including Windsor Locks. We have now had a total of 30 days this year with a high of at least 90 degrees. 2 of those days occurred this month. We had a high of 94 degrees in Windsor Locks on Labor Day and a high of 91 degrees yesterday.


Today will be very warm and humid, but temperatures may top out just below the 90-degree mark. We are forecasting highs in the upper 80s across much of the state. Should the temperature reach 90 degrees in Windsor Locks, we will have our 4th heat wave of 2018. It’ll be a close call, but for now we are forecasting a high of 89 degrees at the airport.

A backdoor cold front that moved through the state overnight will either washout or move back into Southern New England as a warm front. This will set us up for mild, muggy weather tonight followed by more hot weather tomorrow. We are forecasting highs in the upper 80s and lower 90s tomorrow and it will likely be our 31st day this year with a high of at least 90 degrees. A cold front will move southward across Southern New England tomorrow afternoon and that means scattered showers and thunderstorms are likely. The Storm Prediction Center has placed a portion of Connecticut in a “marginal” risk area. This means there is the potential for strong to severe storms. There is also the potential for heavy downpours. However, it looks like the activity will be hit or miss and that means some towns may completely miss out on some much needed rainfall. We have now gone 13 days without measurable rainfall at Bradley International.

Showers and thunderstorms will end tomorrow night and temperatures will bottom out in the 60s by dawn Friday. Yes, cooler, drier air will move into Connecticut on the heels of the cold front tomorrow night!


Friday is shaping up to be a much more comfortable day. The cold front will settle to the south of New England and a northerly flow will continue to usher in drier air. Highs will be closer to 80 degrees Friday and the sky will feature a blend of sunshine and clouds. Overall, a nice end to the workweek.

A weak wave of low pressure may form on the front Friday night and it could briefly brush coastal sections of Southern New England with some light rain. Temperatures will dip into the 50s by dawn Saturday.


Canadian high pressure will push cool, dry air southward across New England Saturday and Sunday. Saturday will be partly sunny and quite comfortable with highs in the low to middle 70s! The air will be quite dry as well and there will be a nice breeze.

Saturday night will be one of the coolest nights in quite some time. We are forecasting lows in the range of 45-55! That’ll make for some great sleeping weather for a change!

We have now taken rain out of Sunday’s forecast. Instead, high pressure will remain in place. Sunday should be partly sunny with highs in the lower 70s, very low humidity, and a pleasant breeze.


A storm system will approach New England from the west on Monday, but high pressure will continue to deliver a cool easterly flow from off the ocean. Rain is expected to develop at some point Monday afternoon and temperatures may have a hard time reaching 70 degrees. The rain will continue Monday night.

Tuesday will be drier and warmer with a mix of clouds and sunshine. Highs will be in the low and middle 80s. There could be a few pop-up showers in the afternoon.

AUGUST 2018…

August 2018 went into the record books as one of the warmest and wettest on record! The average temperature at Bradley International Airport came in at 75.9 degrees, which is 4.0 degrees above normal. It was a tie with August 2016 for the 2nd warmest on record! The warmest August on record was in 1973 when the average temperature was 76.4 degrees. Although we’ve had very little rain over the last 9 days of the month (only a trace at Bradley International), August was the 3rd wettest on record with a total of 9.10”. The wettest August (and all-time wettest month) was in 1955 when we got a one/two tropical punch from Connie and Diane. Total rainfall was 21.87”. August 2011 is in 2nd place with 11.67”. That was when Tropical Storm Irene brought heavy rain to the state.


So far in 2018, there have been 3 heat waves: the first lasted 7 days… June 29th – July 5th; the second one was only 3 days… July 15th – 17th; the third one was 5 days in duration… August 5th – 9th. Because of the hot weather yesterday, we’ve had a total of 30 days with a high temperature of at least 90 degrees, which is well above the seasonal average of 17 days.

As outlined above, August went down in the records books as tied for the 2nd warmest on record with an average temperature of 75.9 degrees. There were 9 days in August with a high of at least 90 degrees.

Also, a record has been set for longest stretch of consecutive days 80 or higher, for the Hartford Area. The prior record of 36 days from 1939 was well surpassed, with 44 days in a row, from June 28th to August 10th of this year!

Chief Meteorologist Bruce DePrest


Recently, NOAA issued their updated outlook for the remainder of the hurricane season. The forecast has been revised downward due to a high probability of a developing El Nino in the Pacific. This will likely suppress tropical activity in the Atlantic Basin during the latter part of the season. Plus, sea surface temperatures remain much cooler than average in the Atlantic Ocean and Caribbean Sea. Tropical storms and hurricanes need warm water to maintain strength or intensify. A combination of stronger wind shear, drier air, and greater stability in the atmosphere could further suppress tropical storms and hurricanes.

NOAA is now forecasting 9-13 tropical storms (average 12), of which 4-7 will become hurricanes (average 6), and 0-2 will become major hurricanes (average 3). The forecast at the beginning of the season was calling for 10-16 tropical storms, 5-9 hurricanes, and 1-4 major hurricanes.

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