Massachusetts Climate Data

We offer an Massachusetts Manual J for $79 in 4-6 hours.  We can also offer Massachusetts Manual S $79 and Massachusetts Manual D $99.

Below is a collection of Massachusetts Climate Data and outdoor design conditions. We included an Massachusetts 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 Massachusetts we would consider adding to the Massachusetts Climate Data table simply email it to

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

Free Manual J

MassachusettsElevation in FeetLatitude North DegreesHeating 99% Outdoor Dry BulbCooling Outdoor Air 1% Dry BulbCooling Outdoor Air Coincident Wet BulbCooling Design Grains 55% Relative Humidity IndoorsCooling Design Grains 45% Relative Humidity IndoorsCooling Design Grains 45% Relative Humidity IndoorsDaily RatingHeating Design Days 65 degrees/Colling Design Days 50 degrees Ratio
Centerville Harbor and Lewis bay)5642148171293542L2.44
Boston, Logan international airport3042128872212834M1.91
Buzzards Bay564117740121825L2.45
Chatham Municipal airport6242167971293542L2.33
Fall River (New Bedford DD)1904198471222935M1.93
Falmouth Area13241148272313844M1.93
Gloucester (Boston DD)114258671192532L1.91
Greenfield (Worcester DD)25042–28571212734M2.82
Lawrence Municipal airport1514398873243138M2.25
Marthas Vineyard6941128171263339M2.58
New Bedford Regional airport8242128471243138M2.26
Norwood Memorial494298873293642M2.42
Otis ANG; Forestdale-Maspee13142138271263339M2.36
Pittsfield airport (Albany, NY, DD)119442–38470182532M2.49
Plymouth Municipal airport14842108472263239M2.52
Provincetown Automated Weather Observation System742188170202633L2.42
South Weymouth Naval Auxilary Air Station16142108872233037M2.09
Springfield DD)1954208771172430M2.92
(Boston DD)16142118772232936M1.91
Worcester Regional airport10174268370192632M2.82
Massachusetts State Average202.541.83333333339.772727272784.291666666768.37522.541666666729.166666666735.7083333333M2.34875


Massachusetts Climate Data
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Massachusetts Climate Data
Massachusetts Climate Data
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Massachusetts Climate Data
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