Nortec NHPC, NHTC manual Design Outdoor Conditions, January

Table 4. Design Outdoor Conditions

					JANUARY					JULY
				Relative Humidity					Relative Humidity
						(% RH)				(% RH)
			Dry	7:30		1:30	7:30	Dry	7:30	1:30	7:30
State	City	°C	Bulb					Bulb				°C
				A.M.		P.M.	P.M.		A.M.	P.M.	P.M.
			°F					°F
Alabama	Birmingham	-12	10	81		61	66	95	84	56	68	35
	Mobile	-12	10	--		--	--	95	90	64	78	35
Arizona	Flagstaff	-23	-10	83		58	--	90	77	36	--	32
	Phoenix	-4	25	75		47	39	105	53	31	23	41
	Yuma	-1	30	56		37	27	110	51	31	23	44
Arkansas	Little Rock	-15	5	80		67	68	95	85	55	59	35
California	Eureka	-1	30	87		--	77	90	92	--	80	32
	Fresno	-4	25	93		80	66	105	61	36	20	41
	Los Angeles	2	35	63		46	51	90	85	50	54	32
	Sacramento	-1	30	90		82	70	100	76	46	28	38
	San Diego	2	35	76		58	60	85	86	68	65	29
	San Francisco	2	35	84		68	70	85	92	75	78	29
Colorado	Denver	-23	-10	54		37	41	95	55	27	30	35
	Grand Junction	-26	-15	77		64	64	95	48	27	22	35
	Pueblo	-29	-20	67		44	48	95	73	34	35	35
Connecticut	New Haven	-18	0	75		65	69	95	77	64	74	35
Delaware	Wilmington	-18	0	77		62	70	95	80	52	69	35
District of	Washington	-18	0	73		56	64	95	78	52	64	35
Columbia
Florida	Jacksonville	-4	25	89		56	75	95	85	57	76	35
	Miami	2	35	87		59	75	91	83	64	76	33
Georgia	Atlanta	-12	10	80		64	69	95	83	57	68	35
	Augusta	-12	10	84		59	69	98	83	55	69	37
	Savannah	-7	20	83		58	72	95	85	61	80	35
Idaho	Boise	-23	-10	82		75	74	95	54	34	23	35
	Lewiston	-20	-5	79		73	71	95	64	37	25	35
Illinois	Cairo	-18	0	81		69	--	98	83	57	--	37
	Chicago	-23	-10	81		70	75	95	78	51	55	35
	Peoria	-23	-10	83		72	77	96	81	53	58	35
Indiana	Fort Wayne	-23	-10	84		75	81	95	84	53	58	35
	Indianapolis	-23	-10	83		72	78	95	84	54	60	35
	Terre Haute	-18	0	82		70	76	95	77	50	56	35
Iowa	Davenport	-26	-15	--		--	--	95	--	--	--	35
	Sioux City	-29	-20	78		67	72	95	86	55	54	35
Kansas	Dodge City	-23	-10	78		57	61	95	77	45	52	35
	Topeka	-23	-10	78		64	67	100	85	54	54	38
Kentucky	Louisville	-18	0	78		68	69	95	77	52	57	35
Louisiana	New Orleans	-7	20	85		67	73	95	84	64	72	35
	Shreveport	-7	20	83		67	66	100	86	56	62	38
Maine	Portland	-21	-5	81		65	74	90	78	58	76	32
Maryland	Baltimore	-18	0	72		68	56	95	71	52	65	35
Massachusetts	Boston	-18	0	72		59	67	92	72	55	70	33
Michigan	Detroit	-23	-10	82		71	77	95	74	50	56	35
	Grand Rapids	-23	-10	85		78	80	95	76	51	54	35
Minnesota	Duluth	-32	-25	78		74	74	93	87	61	66	33
	Minneapolis	-29	-20	82		72	75	95	82	54	54	35
Mississippi	Vicksburg	-12	10	82		65	67	95	87	61	70	35
	Kansas City	-23	-10	78		64	66	100	76	48	47	38
Missouri	St. Louis	-18	0	77		65	68	95	73	50	55	35
Montana	Billings	-32	-25	67		73	60	90	65	40	33	32
	Butte	-29	-20	76		70	71	95	82	36	33	35
Nebraska	North Platte	-29	-20	80		62	66	85	84	50	46	29
	Omaha	-23	-10	82		68	73	95	80	51	51	35
Nevada	Reno	-21	-5	82		67	54	95	72	25	20	35
New Hampshire	Concord	-26	-15	78		60	69	90	80	49	69	32

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