Connecticut Climate Data

Below is a collection of Connecticut Climate Data and outdoor design conditions. We included an Connecticut state average of each category at the bottom of the Manual J climate data table. We created this to allow an easy to use free resource for Manual J professionals to use on jobsites, in the field, and while calculating Manual J heat loss and heat gain reports. If you have a custom set of data from Connecticut we would consider adding to the Connecticut Climate Data table simply email it to plans@manualjs.com

We can also create a Manual J using climate data from the tables below. Email pdf plans, jobsite address, and square footage to plans@manualjs.com and we will get your Connecticut Manual J taken care of.

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Connecticut Elevation in Feet Latitude North Degrees Heating 99% Outdoor Dry Bulb Cooling Outdoor Air 1% Dry Bulb Cooling Outdoor Air Coincident Wet Bulb Cooling Design Grains 55% Relative Humidity Indoors Cooling Design Grains 45% Relative Humidity Indoors Cooling Design Grains 45% Relative Humidity Indoors Daily Rating Heating Design Days 65 degrees/Colling Design Days 50 degrees Ratio
Bridgeport, Sikorsky Memorial airport 16 41 15 85 72 24 31 38 L 1.71
Hartford, Bradley international airport 180 42 8 88 72 20 27 33 M 2.05
Hartford, Brainard Field 20 42 11 88 73 25 32 38 M 1.82
New Haven airport (Bridgeport DD) 14 41 7 84 73 33 40 46 M 1.71
New London (Bridgeport DD) 10 41 9 85 72 26 32 39 M 1.71
Norwalk 397 41 9 84 71 22 29 36 M 2.08
Norwich 197 41 7 86 73 30 37 44 M 2.13
Oxford Automated Weather Observation System 728 41 9 84 71 23 30 36 M 2.66
Waterbury (Hartford DD) 850 41 2 85 71 22 28 35 M 1.82
Willimantic Automated Surface Observation System 249 42 9 86 72 26 33 39 M 2.24
(Hartford DD) 197 42 8 88 71 16 22 29 M 1.82
Connecticut State Averages 259.8181818182 41.3636363636 8.5454545455 85.7272727273 71.9090909091 24.2727272727 31 37.5454545455 M 1.9772727273

 

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Connecticut Climate Data
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Connecticut Climate Data
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Connecticut Climate Data
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Email order number, PDF Plans, jobsite address, and square footage to plans@manualjs.com