Montana Climate Data

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

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Montana 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
Billings, Logan international airport 3570 46 -6 91 62 -33 -26 -18 H 2.65
Bozeman, Gallatin Field 4449 46 -10 88 60 -36 -28 -20 H 5.14
Butte, Bert Mooney airport 5535 46 -12 84 57 -47 -39 -31 H 7.86
Cut Bank Municipal airport 3839 49 -13 85 59 -38 -31 -23 H 6.13
Dillon Airport 5223 45 1 86 60 -36 -28 -20 H 4.95
Glasgow international airport 2293 48 -17 91 64 -25 -18 -11 H 3.66
Glendive Automated Weather Observation System 2457 47 -12 91 64 -22 -14 -7 H 3.74
Great Falls 3707 47 -6 87 60 -38 -31 -23 H 4.29
Great Falls international airport 3658 47 -11 89 60 -37 -30 -22 H 3.96
Havre City-Co. airport 2598 49 -18 91 63 -29 -22 -15 H 3.99
Helena Regional airport 3868 47 -8 89 61 -37 -29 -21 H 3.81
Jordan Remote Automatic Meterological Observing System 2661 47 -18 93 63 -30 -23 -16 H 3.72
Kalispell, Glacier Park international airport 2972 48 -1 86 62 -27 -20 -13 H 5.53
Lewistown Municipal airport 4147 47 -10 87 60 -35 -28 -20 H 5.32
Livingston airport 4656 45 –14 87 60 -36 -28 -20 H 4.21
Malmstrom Air Force Base (Great Falls) 3465 48 -10 90 62 -33 -26 -18 H 3.16
Miles City Municipal airport 2635 46 -12 95 65 -25 -18 -10 H 2.68
Missoula international airport 3189 47 2 89 62 -32 -25 -17 H 4.11
Sidney Muncipal airport 1985 48 -13 90 67 -9 -2 5 H 3.85
Montana State Average 3521.4210526316 47 -9.6666666667 88.8947368421 61.6315789474 -31.8421052632 -24.5263157895 -16.8421052632 H 4.3557894737

 

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