Outdoor Temperatures and Relative Humidity - US Winter and Summer Conditions

Outdoor summer and winter design temperatures and relative humidity for US states and cities.

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The table below indicates the summer and winter design conditions in US states and cities.

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State	City	January					July
		Average Daily Temperature (^oF) Load Calculator!	Design Dry Bulb Temperature (^oF) Load Calculator!	Normal Relative Humidity (%)			Average Daily Temperature (^oF) Load Calculator!	Design Dry Bulb Temperature (^oF) Load Calculator!	Normal Relative Humidity (%)
		Average Daily Temperature (^oF) Load Calculator!	Design Dry Bulb Temperature (^oF) Load Calculator!	7:30 am.	1:30 pm.	7:30 pm.	Average Daily Temperature (^oF) Load Calculator!	Design Dry Bulb Temperature (^oF) Load Calculator!	7:30 am.	1:30 pm.	7:30 pm.
Alabama	Birmingham		10	81	61	66		95	84	56	68
Alabama	Mobile	52.5	10				81.5	95	90	64	78
Arizona	Flagstaff		-10	83	58			90	77	36
	Phoenix	53.9	25	75	47	39	89.6	105	53	31	23
	Yuma		30	56	37	27		110	51	31	23
Arkansas	Little Rock	42.4	5	80	67	68	80.5	95	85	55	59
California	Eureka		30	87		77		90	92		80
	Fresno		25	93	80	66		105	61	36	20
	Los Angeles	52.1	35	63	46	51	68.3	90	85	50	54
	Sacramento		30	90	82	70		100	76	46	28
	San Diego		35	76	58	60		85	86	68	65
	San Francisco		35	84	69	70		85	92	75	78
Colorado	Denver	31.9	-10	54	37	41	70.6	95	55	27	30
	Grand Junction		-15	77	64	64		95	48	27	22
	Pueblo		-20	67	44	48		95	73	34	35
Connecticut	New Haven		0	75	65	69		95	77	64	74
Delaware	Wilmington	33.3	0	77	62	70	74.0	95	80	52	69
District of Columbia	Washington	37.2	0	73	56	64	77.0	95	78	52	64
Florida	Jacksonville		25	89	56	75		95	85	57	76
Florida	Miami	67.8	35	87	59	75	82.0	91	83	64	76
Georgia	Atlanta	43.8	10	80	64	69	77.5	95	83	57	68
	Augusta		10	84	59	69		98	83	55	69
	Savannah		20	83	58	72		95	85	61	80
Idaho	Boise	32.7	-10	82	75	74	70.8	95	54	34	23
Idaho	Lewiston		-5	79	73	71		95	64	37	25
Illinois	Cairo		0	81	69			98	83	57
	Chicago	25.0	-10	81	70	75	71.2	95	78	51	55
	Peoria		-10	73	72	77		96	81	53	58
Indiana	Fort Wayne		-10	84	75	81		95	84	53	58
	Indianapolis	29.1	-10	83	72	78	73.4	95	84	54	60
	Terre Haute		0	82	70	76		95	77	50	56
Iowa	Davenport		-15					95
Iowa	Sioux City		-20	78	67	72		95	86	55	54
Kansas	Dodge City		-10	78	57	61		95	77	45	52
Kansas	Topeka		-10	78	64	67		100	85	54	54
Kentucky	Louisville	35.2	0	78	68	69	75.9	95	77	52	57
Louisiana	New Orleans	53.9	20	85	67	73	81.3	95	84	64	72
Louisiana	Shreveport		20	83	67	66		100	86	56	62
Maine	Portland	23.4	-5	81	65	74	65.6	90	78	58	76
Maryland	Baltimore	34.6	0	72	68	56	74.8	95	71	52	65
Massachusetts	Boston	31.3	0	72	59	67	71.1	92	72	55	70
Michigan	Detroit	25.9	-10	82	71	77	70.0	95	74	50	56
Michigan	Grand Rapids		-10	85	78	80		95	76	51	54
Minnesota	Duluth		-25	78	74	74		93	87	61	66
Minnesota	Minneapolis	16.0	-20	82	72	75	70.6	95	82	54	54
Mississippi	Vicksburg		10	82	65	67		95	87	61	70
Missouri	Kansas City		-10	78	64	66		100	76	48	47
Missouri	St. Louis	32.3	0	77	65	68	76.9	95	73	50	55
Montana	Billings		-25	67	73	60		90	65	40	33
Montana	Butte		-20	76	70	71		95	82	36	33
Nebraska	North Platte		-20	80	62	66		85	84	50	46
Nebraska	Omaha	24.9	-10	82	68	73	75.3	65	80	51	51
Nevada	Reno	34.0	-5	82	67	54	66.2	95	72	25	20
New Hampshire	Concord	22.2	-15	78	60	69	67.1	90	80	49	69
New Jersey	Atlantic City	33.6	5	79	68	74	72.2	95	81	72	82
	Newark		0	72	79	65		95	75	51	65
	Trenton		0	73	62	68		95	77	55	68
New Mexico	Albuquerque	36.6	0	68	51	46	76.4	95	59	33	28
New York	Albany		-10	75	63	71		93	79	52	64
	Buffalo		-5	79	72	78		93	78	53	63
	New York	33.8	0	72	61	66	74.5	95	75	58	68
	Rochester		-5	81	73	79		95	80	50	60
North Carolina	Asheville		0	82	59	69		93	88	56	73
North Carolina	Raleigh	41.1	10	82	57	69	76.2	95	86	55	72
North Dakota	Bismarck	12.2	-30	77	71	75	67.8	95	85	52	49
Ohio	Cincinnati		0	82	70	74		95	84	52	60
	Cleveland	28.0	0	81	72	79	69.8	95	79	52	58
	Columbus		-10	83	71	76		95	78	52	60
	Toledo		-10	79	72	75		95	76	52	59
Oklahoma	Oklahoma City	38.9	0	79	62	65	80.0	101	80	49	51
Oregon	Baker		-5	83	81	78		90	69	68	36
Oregon	Portland	41.0	10	87	82	78	63.8	90	86	63	48
Pennsylvania	Harrisburg		0	72	49	65		95	78	51	62
	Philadelphia		0	74	65	68		95	78	52	65
	Pittsburgh	29.0	0	77	67	63	70.2	95	80	52	63
	Scranton		-5	80	67			95	77	50
Rhode Island	Providence	29.9	0	73	60	67	70.1	93	79	57	73
South Carolina	Charleston		15	87	55	76		95	88	64	82
South Carolina	Columbia	46.2	10	81	57	65	79.6	95	83	56	68
South Dakota	Huron		-20	79	72	76		95	86	52	49
South Dakota	Rapid City		-20	71	69	67		95	71	42	40
Tennessee	Knoxville		0	83	65	69		95	83	55	66
Tennessee	Memphis		0	82	67	73		95	85	55	59
Texas	Amarillo		-10	71	51	52		100	77	43	42
	Corpus Christi		20	88	66	75		95	93	58	68
	Dallas		10	81	62	62		100	79	50	47
	El Paso		10	63	45	39		100	60	37	30
	Houston	53.3	20	85	66	73	82.1	95	90	58	66
	San Antonio		20	82	60	59		100	88	49	45
Utah	Salt Lake City	31.0	-10	80	71	72	73.5	95	56	27	23
Vermont	Burlington	19.1	-10	81	69	78	67.3	90	76	54	67
Virginia	Richmond	38.5	15	84	60	68	76.0	95	81	57	72
Washington	Seattle	41.0	15	86	80	74	63.0	85	86	63	47
Washington	Walla Walla		-5	80	74	78		95	50	33	22
West Virginia	Charleston	35.1	0	79	64	70	73.0	95	88	53	67
West Virginia	Parkersburg		-10	82	66	74		95	80	52	65
Wisconsin	Green Bay		-15	75	68	73		95	85	58	64
Wisconsin	Milwaukee	22.3	-15	76	70	73	68.2	95	81	58	64
Wyoming	Cheyenne	28.2	-15	59	48	55	65.9	95	73	36	40

Outdoor Temperatures and Relative Humidity - US Winter and Summer Conditions

Outdoor summer and winter design temperatures and relative humidity for US states and cities.

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