Alabama Climate Data

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

Below is a collection of Alabama Climate Data and outdoor design conditions. We included an Alabama 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 Alabama we would consider adding to the Alabama 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 Alabama Manual J taken care of.

Free Manual J


 Elevation 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
Alexander City68633229376384552M0.55
Anniston Metropolitan airport60034259276364350M0.51
Auburn-Opelika airport77433289174283542M0.43
Birmingham Municipal airport63034249375323945M0.49
Cairns Air Force Base (Ozark)29931309376374451M0.28
Centreville WSMO45333269276374350M0.45
Decatur (Athens DD)59234169374263239M0.79
Dauphin Island3030388777536066L0.19
Dothan Municipal airport32231319376354249M0.26
Florence airport (Muscle Shoals DD)58134219475303744M0.6
Gadsden Municipal airport Automated Weather Observation System56834229175323845M0.68
Huntsville international airport, Jones Field64335229275313845M0.62
Maxwell Air Force Base (Montgom)17432329577374451M0.28
Mobile Regional airport22031319276424855M0.25
Mobile CO2630299377435056M0.25
Montgomery, Dannelly Field20332279476364349M0.35
Muscle Shoals Regional airport56135229375334046M0.6
Ozark, Fort Rucker35631319477424956M0.28
Selma-Craig Air Force Base16632269577404753M0.37
Tuscaloosa Municipal airport18733259376384552M0.44
Alabama State Averages409.476190476232.61904761926.190476190592.714285714375.809523809536.285714285743.095238095249.8095238095M0.4457142857
Alabama Climate Data
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Alabama Climate Data
Alabama Climate Data
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Email order number, PDF Plans, jobsite address, and square footage to