Washington Climate Data

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

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

Free Manual J

WashingtonElevation 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
Arlington Municipal airport13848257964-618M3.25
Bellingham international airport15149237664-3410M3.38
Bremerton National airport44947278264-12-51M3.43
Destruction Island12848346355-20-13-7L5.81
Ellensburg airport17604769164-24-17-10H3.42
Everett, Paine Air Force Base59647257664-1612M2.92
Fairchild Air Force Base243848118962-32-25-18H3.3
Friday Harbor airport10849307562-11-42M4.64
Gray Army Air Field30247248264-14-7-1M2.87
Hoquiam airport1647317362-607L3.47
Longview, Kelso Longview airport2046268366-3410M2.31
Mc Chord Air Force Base, Tacoma28947258263-14-7-1M2.78
Moses Lake (Othello DD)11854779465-24-18-11H2.88
Mukilito, airport62048307562-9-34M3.18
Olympia Airport20047248365-9-24H3.19
Fairchild international airport29948287561-14-7-1M4.75
Pullman-Moscow Regional airport255247169064-20-13-6H3.45
Quillayute State airport20748277561-13-61M4.94
Seattle, Boeing Field3048288264-12-51M1.77
Seattle CO1447278266-1512M2.14
Seattle-Tacoma international airport43347298164-12-52M2.32
Shelton, Sanderson Field26947278365-10-34M3.14
Smith Island5948326457-13-60L6.23
Spokane Felts airport200148139164-23-16-9H2.69
Spokane international airport236548108962-32-24-17H3.14
Stampede Pass396747117557-30-23-15M11.55
Tacoma Narrows airport29947338163-14-7-1M2.3
Tacoma-McChord Air Force Base32247248263-16-9-2M2.19
Tatoosh Island15748346255-17-11-4L7.84
Vancover, Pearson Airfield2646288866-9-34M1.77
Walla Walla Regional airport120446169566-23-17-10H1.51
Wentachee airport123047129265-22-15-8M2.04
West Point Light, Magnolia3048336860-7-16L3.36
Whidbey Island Naval Auxilary Air Station4648277061-7-16L4.29
McAllister Field106647129265-21-14-7H2.46
Washington State Average27908189389632802522-600-331-650134.73


Washington Climate Data
Article Name
Washington Climate Data
Washington Climate Data
Publisher Name
Publisher Logo

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