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.
| Washington | 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 |
| Aberdeen | 12 | 47 | 28 | 77 | 62 | -12 | -6 | 1 | M | 3.29 |
| Arlington Municipal airport | 138 | 48 | 25 | 79 | 64 | -6 | 1 | 8 | M | 3.25 |
| Bellingham international airport | 151 | 49 | 23 | 76 | 64 | -3 | 4 | 10 | M | 3.38 |
| Bremerton National airport | 449 | 47 | 27 | 82 | 64 | -12 | -5 | 1 | M | 3.43 |
| Destruction Island | 128 | 48 | 34 | 63 | 55 | -20 | -13 | -7 | L | 5.81 |
| Ellensburg airport | 1760 | 47 | 6 | 91 | 64 | -24 | -17 | -10 | H | 3.42 |
| Everett, Paine Air Force Base | 596 | 47 | 25 | 76 | 64 | -1 | 6 | 12 | M | 2.92 |
| Fairchild Air Force Base | 2438 | 48 | 11 | 89 | 62 | -32 | -25 | -18 | H | 3.3 |
| Friday Harbor airport | 108 | 49 | 30 | 75 | 62 | -11 | -4 | 2 | M | 4.64 |
| Gray Army Air Field | 302 | 47 | 24 | 82 | 64 | -14 | -7 | -1 | M | 2.87 |
| Hanford | 732 | 47 | 13 | 97 | 65 | -27 | -21 | -14 | H | 1.4 |
| Hoquiam airport | 16 | 47 | 31 | 73 | 62 | -6 | 0 | 7 | L | 3.47 |
| Kennewick | 531 | 46 | 11 | 96 | 67 | -18 | -11 | -5 | H | 1.42 |
| Longview, Kelso Longview airport | 20 | 46 | 26 | 83 | 66 | -3 | 4 | 10 | M | 2.31 |
| Mc Chord Air Force Base, Tacoma | 289 | 47 | 25 | 82 | 63 | -14 | -7 | -1 | M | 2.78 |
| Moses Lake (Othello DD) | 1185 | 47 | 7 | 94 | 65 | -24 | -18 | -11 | H | 2.88 |
| Mukilito, airport | 620 | 48 | 30 | 75 | 62 | -9 | -3 | 4 | M | 3.18 |
| Olympia Airport | 200 | 47 | 24 | 83 | 65 | -9 | -2 | 4 | H | 3.19 |
| Omak | 1253 | 48 | 14 | 93 | 64 | -28 | -21 | -15 | H | 2.36 |
| Pasco | 404 | 46 | 15 | 97 | 69 | -11 | -5 | 2 | H | 1.55 |
| Fairchild international airport | 299 | 48 | 28 | 75 | 61 | -14 | -7 | -1 | M | 4.75 |
| Pullman-Moscow Regional airport | 2552 | 47 | 16 | 90 | 64 | -20 | -13 | -6 | H | 3.45 |
| Quillayute State airport | 207 | 48 | 27 | 75 | 61 | -13 | -6 | 1 | M | 4.94 |
| Seattle, Boeing Field | 30 | 48 | 28 | 82 | 64 | -12 | -5 | 1 | M | 1.77 |
| Seattle CO | 14 | 47 | 27 | 82 | 66 | -1 | 5 | 12 | M | 2.14 |
| Seattle-Tacoma international airport | 433 | 47 | 29 | 81 | 64 | -12 | -5 | 2 | M | 2.32 |
| Shelton, Sanderson Field | 269 | 47 | 27 | 83 | 65 | -10 | -3 | 4 | M | 3.14 |
| Smith Island | 59 | 48 | 32 | 64 | 57 | -13 | -6 | 0 | L | 6.23 |
| Spokane Felts airport | 2001 | 48 | 13 | 91 | 64 | -23 | -16 | -9 | H | 2.69 |
| Spokane international airport | 2365 | 48 | 10 | 89 | 62 | -32 | -24 | -17 | H | 3.14 |
| Stampede Pass | 3967 | 47 | 11 | 75 | 57 | -30 | -23 | -15 | M | 11.55 |
| Tacoma Narrows airport | 299 | 47 | 33 | 81 | 63 | -14 | -7 | -1 | M | 2.3 |
| Tacoma-McChord Air Force Base | 322 | 47 | 24 | 82 | 63 | -16 | -9 | -2 | M | 2.19 |
| Tatoosh Island | 157 | 48 | 34 | 62 | 55 | -17 | -11 | -4 | L | 7.84 |
| Vancover, Pearson Airfield | 26 | 46 | 28 | 88 | 66 | -9 | -3 | 4 | M | 1.77 |
| Walla Walla Regional airport | 1204 | 46 | 16 | 95 | 66 | -23 | -17 | -10 | H | 1.51 |
| Wentachee airport | 1230 | 47 | 12 | 92 | 65 | -22 | -15 | -8 | M | 2.04 |
| West Point Light, Magnolia | 30 | 48 | 33 | 68 | 60 | -7 | -1 | 6 | L | 3.36 |
| Whidbey Island Naval Auxilary Air Station | 46 | 48 | 27 | 70 | 61 | -7 | -1 | 6 | L | 4.29 |
| McAllister Field | 1066 | 47 | 12 | 92 | 65 | -21 | -14 | -7 | H | 2.46 |
| Washington State Average | 27908 | 1893 | 896 | 3280 | 2522 | -600 | -331 | -65 | 0 | 134.73 |
