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Temperatures by month, in Celsius and Fahrenheit

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In the following tables we can see the temperature by month in the United States. The coldest month is January. The warmest month is July.
The minimum temperature is usually recorded just before dawn, the maximum in the early afternoon.

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United States - Average temperatures in January
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-27	-17	-22.4	-17	1	-8.2
Anchorage	-12	-5	-8.4	11	23	16.8
Seattle	3	9	6.0	38	48	42.9
Fargo (275 m.)	-18	-8	-12.7	0	18	9.1
Helena (1,250 m.)	-10	0	-5.0	13	32	22.9
Minneapolis	-13	-5	-8.8	9	24	16.2
Yellowstone Lake (2,400 m.)	-17	-5	-11.1	1	23	12.0
Portland_ME	-9	0	-4.4	16	32	24.0
Chicago	-7	1	-3.0	20	33	26.6
Salt Lake City (1,300 m.)	-4	4	-0.3	24	39	31.4
New York	-3	4	0.8	27	40	33.4
Denver (1,600 m.)	-7	7	-0.2	19	45	31.6
Kansas City (270 m.)	-5	4	-0.5	22	40	31.1
Washington	-1	7	3.0	30	45	37.4
Sacramento	4	13	8.6	39	56	47.6
San Francisco	7	15	10.7	44	58	51.2
Mammoth Lakes (2,400 m.)	-9	5	-1.7	17	41	28.9
Las Vegas (650 m.)	5	15	9.7	40	58	49.5
Los Angeles	9	21	15.3	48	71	59.5
Atlanta (300 m.)	2	12	7.1	36	54	44.8
Phoenix (350 m.)	8	20	13.8	46	68	56.8
Dallas	2	14	7.9	36	56	46.3
San Diego	9	20	14.5	49	67	58.2
New Orleans	8	17	12.4	46	62	54.3
Houston	6	18	12.1	44	64	53.8
Miami	16	25	20.3	61	76	68.6
Average United States	-2.4	7.3	1.7	27.7	45.2	35.1

United States - Average temperatures in February
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-24	-11	-17.6	-11	12	0.2
Anchorage	-9	-3	-6.0	15	27	21.3
Seattle	3	10	6.7	38	50	44.1
Fargo (275 m.)	-16	-5	-10.4	4	23	13.4
Helena (1,250 m.)	-8	3	-2.7	17	37	27.2
Minneapolis	-11	-2	-6.3	13	29	20.6
Yellowstone Lake (2,400 m.)	-17	-3	-10.3	1	26	13.5
Portland_ME	-8	2	-3.2	17	35	26.2
Chicago	-5	3	-1.0	23	37	30.2
Salt Lake City (1,300 m.)	-2	7	2.6	29	45	36.7
New York	-2	6	1.8	28	42	35.3
Denver (1,600 m.)	-7	8	0.4	20	46	32.7
Kansas City (270 m.)	-3	7	2.1	26	45	35.8
Washington	0	9	4.5	32	48	40.1
Sacramento	5	16	10.8	42	61	51.4
San Francisco	8	16	11.9	46	61	53.4
Mammoth Lakes (2,400 m.)	-8	5	-1.5	18	41	29.4
Las Vegas (650 m.)	7	17	11.9	44	63	53.5
Los Angeles	10	21	15.4	49	70	59.7
Atlanta (300 m.)	4	15	9.2	39	58	48.6
Phoenix (350 m.)	9	22	15.5	49	71	59.9
Dallas	4	16	10.3	40	61	50.5
San Diego	10	19	14.9	51	67	58.8
New Orleans	10	19	14.5	50	66	58.0
Houston	9	20	14.3	48	68	57.7
Miami	17	26	21.5	63	78	70.7
Average United States	-0.9	9.3	3.4	30.4	48.8	38.1

United States - Average temperatures in March
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-20	-4	-11.8	-3	25	10.8
Anchorage	-7	1	-3.4	19	33	25.9
Seattle	4	12	8.4	40	54	47.0
Fargo (275 m.)	-8	2	-2.6	18	36	27.2
Helena (1,250 m.)	-4	9	2.2	25	47	36.0
Minneapolis	-4	5	0.7	25	42	33.3
Yellowstone Lake (2,400 m.)	-14	2	-6.0	8	35	21.2
Portland_ME	-3	6	1.2	26	42	34.2
Chicago	0	9	4.6	32	48	40.2
Salt Lake City (1,300 m.)	2	13	7.7	36	55	45.8
New York	2	10	5.7	35	50	42.3
Denver (1,600 m.)	-2	13	5.4	28	56	41.6
Kansas City (270 m.)	2	14	8.0	36	57	46.4
Washington	4	14	8.6	39	56	47.6
Sacramento	7	19	13.0	44	66	55.4
San Francisco	9	18	13.1	47	64	55.6
Mammoth Lakes (2,400 m.)	-5	8	1.0	22	46	33.9
Las Vegas (650 m.)	10	22	16.0	51	71	60.8
Los Angeles	11	22	16.7	52	72	62.1
Atlanta (300 m.)	7	19	13.1	45	66	55.6
Phoenix (350 m.)	12	26	19.1	54	78	66.3
Dallas	9	20	14.6	48	69	58.2
San Diego	12	20	15.8	53	68	60.5
New Orleans	13	22	17.7	55	72	63.8
Houston	12	23	17.7	54	74	63.8
Miami	19	27	22.8	66	81	73.1
Average United States	2.6	13.5	7.2	36.7	56.2	45.0

United States - Average temperatures in April
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-6	8	1.0	22	46	33.7
Anchorage	-1	7	3.0	30	45	37.5
Seattle	6	15	10.8	43	59	51.4
Fargo (275 m.)	0	12	6.1	32	54	43.0
Helena (1,250 m.)	0	14	7.0	32	57	44.5
Minneapolis	3	14	8.4	38	57	47.1
Yellowstone Lake (2,400 m.)	-9	5	-1.8	17	41	28.7
Portland_ME	2	12	7.0	35	54	44.6
Chicago	5	16	10.7	42	61	51.3
Salt Lake City (1,300 m.)	5	17	11.0	42	62	51.8
New York	7	16	11.6	45	61	53.0
Denver (1,600 m.)	1	16	8.8	34	62	47.8
Kansas City (270 m.)	8	19	13.6	46	67	56.5
Washington	9	20	14.6	48	68	58.2
Sacramento	8	22	15.3	47	72	59.5
San Francisco	9	19	14.2	49	66	57.5
Mammoth Lakes (2,400 m.)	-3	11	4.0	27	51	39.2
Las Vegas (650 m.)	14	26	19.8	57	78	67.7
Los Angeles	13	23	18.0	55	74	64.3
Atlanta (300 m.)	11	23	17.3	53	74	63.1
Phoenix (350 m.)	16	30	22.9	61	85	73.1
Dallas	13	24	18.7	55	76	65.7
San Diego	13	21	17.1	56	70	62.7
New Orleans	16	26	21.2	62	78	70.1
Houston	15	27	21.1	60	80	69.9
Miami	21	29	24.8	70	84	76.7
Average United States	6.9	18.2	11.6	44.5	64.7	52.9

United States - Average temperatures in May
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	4	17	10.2	39	62	50.4
Anchorage	4	14	9.0	40	56	48.1
Seattle	9	19	14.2	49	66	57.6
Fargo (275 m.)	7	20	13.6	44	69	56.6
Helena (1,250 m.)	5	19	12.2	42	66	53.9
Minneapolis	10	21	15.3	50	69	59.5
Yellowstone Lake (2,400 m.)	-3	10	3.6	26	51	38.4
Portland_ME	8	18	12.7	46	64	54.9
Chicago	11	22	16.9	53	72	62.4
Salt Lake City (1,300 m.)	10	23	16.4	50	73	61.5
New York	12	22	17.0	54	71	62.7
Denver (1,600 m.)	6	22	14.1	44	71	57.4
Kansas City (270 m.)	14	25	19.3	57	76	66.7
Washington	14	25	19.6	58	76	67.2
Sacramento	11	27	19.0	52	80	66.1
San Francisco	11	21	15.7	52	69	60.3
Mammoth Lakes (2,400 m.)	1	16	8.6	35	60	47.5
Las Vegas (650 m.)	19	31	25.2	66	89	77.3
Los Angeles	15	24	19.2	58	75	66.6
Atlanta (300 m.)	16	27	21.8	61	81	71.2
Phoenix (350 m.)	21	35	27.8	69	94	82.0
Dallas	18	29	23.4	65	84	74.1
San Diego	15	21	18.2	60	70	64.8
New Orleans	21	30	25.1	69	85	77.2
Houston	20	30	25.2	68	87	77.4
Miami	23	30	26.7	73	87	80.1
Average United States	11.7	22.9	16.3	53.0	73.3	61.3

United States - Average temperatures in June
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	10	22	16.1	50	72	61.0
Anchorage	9	17	13.2	48	63	55.8
Seattle	12	22	16.7	53	71	62.1
Fargo (275 m.)	13	26	19.4	56	78	66.8
Helena (1,250 m.)	9	24	16.5	49	75	61.7
Minneapolis	16	26	20.9	60	79	69.7
Yellowstone Lake (2,400 m.)	1	16	8.4	33	61	47.1
Portland_ME	13	23	18.0	55	74	64.3
Chicago	17	27	22.2	63	81	72.0
Salt Lake City (1,300 m.)	15	29	22.0	59	84	71.6
New York	18	26	22.2	64	80	71.9
Denver (1,600 m.)	12	29	20.2	53	83	68.3
Kansas City (270 m.)	20	30	24.7	67	86	76.5
Washington	20	30	24.6	67	85	76.3
Sacramento	14	31	22.4	56	88	72.2
San Francisco	12	22	17.2	54	72	62.9
Mammoth Lakes (2,400 m.)	6	21	13.5	42	70	56.3
Las Vegas (650 m.)	24	37	30.9	76	99	87.6
Los Angeles	16	26	20.9	61	78	69.7
Atlanta (300 m.)	20	31	25.5	69	87	77.8
Phoenix (350 m.)	26	40	33.0	79	104	91.4
Dallas	22	33	27.7	72	92	81.9
San Diego	17	22	19.4	62	72	66.9
New Orleans	24	32	28.0	75	90	82.3
Houston	23	34	28.3	74	92	83.0
Miami	25	32	28.2	76	89	82.8
Average United States	15.8	27.2	20.4	60.5	81.0	68.7

United States - Average temperatures in July
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	12	23	17.2	53	73	62.9
Anchorage	12	19	15.3	53	66	59.5
Seattle	14	25	19.5	57	77	67.1
Fargo (275 m.)	15	28	21.5	59	82	70.7
Helena (1,250 m.)	13	30	21.4	55	86	70.6
Minneapolis	18	29	23.5	65	83	74.4
Yellowstone Lake (2,400 m.)	4	22	13.0	39	72	55.4
Portland_ME	16	26	21.3	61	80	70.3
Chicago	20	29	24.8	68	85	76.6
Salt Lake City (1,300 m.)	20	34	27.3	68	94	81.1
New York	21	30	25.3	70	85	77.5
Denver (1,600 m.)	16	32	24.0	60	90	75.1
Kansas City (270 m.)	22	32	27.2	72	90	81.0
Washington	22	32	27.2	72	90	81.0
Sacramento	15	34	24.4	59	93	75.9
San Francisco	13	23	17.9	55	73	64.2
Mammoth Lakes (2,400 m.)	9	25	17.4	49	78	63.3
Las Vegas (650 m.)	28	40	34.0	82	105	93.3
Los Angeles	18	29	23.4	65	83	74.2
Atlanta (300 m.)	22	32	27.2	72	90	81.0
Phoenix (350 m.)	29	41	35.3	85	107	95.5
Dallas	24	35	29.8	76	96	85.7
San Diego	19	24	21.3	65	75	70.4
New Orleans	25	33	28.9	76	91	83.9
Houston	24	35	29.5	76	94	85.1
Miami	25	33	28.9	78	91	84.1
Average United States	18.4	29.8	23.0	65.0	85.7	73.4

United States - Average temperatures in August
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	9	19	13.9	48	66	57.0
Anchorage	10	18	14.2	51	64	57.5
Seattle	14	25	19.6	57	78	67.4
Fargo (275 m.)	14	27	20.4	57	81	68.8
Helena (1,250 m.)	12	29	20.4	53	85	68.7
Minneapolis	17	27	22.1	63	81	71.8
Yellowstone Lake (2,400 m.)	3	22	12.1	37	71	53.9
Portland_ME	15	26	20.6	60	79	69.2
Chicago	19	28	23.8	67	83	74.9
Salt Lake City (1,300 m.)	19	33	26.2	67	92	79.2
New York	21	28	24.6	69	83	76.2
Denver (1,600 m.)	15	31	22.7	58	87	72.9
Kansas City (270 m.)	21	31	26.2	70	89	79.2
Washington	22	31	26.4	71	88	79.4
Sacramento	15	33	24.1	59	92	75.4
San Francisco	13	23	18.4	56	74	65.0
Mammoth Lakes (2,400 m.)	9	25	16.9	47	77	62.4
Las Vegas (650 m.)	27	39	33.2	81	103	91.7
Los Angeles	18	29	23.8	65	84	74.8
Atlanta (300 m.)	22	32	26.8	71	89	80.2
Phoenix (350 m.)	29	41	34.6	84	105	94.4
Dallas	24	35	29.9	76	96	85.7
San Diego	19	25	22.3	67	77	72.1
New Orleans	25	33	28.9	77	91	83.9
Houston	24	35	29.5	75	95	85.1
Miami	25	33	29.0	78	91	84.2
Average United States	17.7	29.2	22.4	63.9	84.6	72.3

United States - Average temperatures in September
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	2	13	7.6	36	55	45.7
Anchorage	6	13	9.6	43	56	49.4
Seattle	12	22	17	54	72	62.6
Fargo (275 m.)	9	22	15.6	48	72	60.0
Helena (1,250 m.)	7	23	15.0	45	73	58.9
Minneapolis	12	23	17.5	54	73	63.5
Yellowstone Lake (2,400 m.)	-1	16	7.4	30	60	45.4
Portland_ME	11	22	16.4	52	71	61.6
Chicago	15	25	20.0	59	77	68.0
Salt Lake City (1,300 m.)	14	27	20.2	56	81	68.4
New York	17	24	20.6	62	76	69.2
Denver (1,600 m.)	10	26	18.2	50	80	64.8
Kansas City (270 m.)	16	27	21.5	61	80	70.7
Washington	18	27	22.4	64	81	72.4
Sacramento	14	31	22.5	56	89	72.5
San Francisco	13	24	18.7	56	75	65.7
Mammoth Lakes (2,400 m.)	4	22	13.1	40	71	55.5
Las Vegas (650 m.)	22	35	28.7	72	95	83.6
Los Angeles	18	29	23.4	64	84	74.2
Atlanta (300 m.)	19	29	23.8	66	84	74.9
Phoenix (350 m.)	26	38	31.8	78	100	89.2
Dallas	20	31	25.9	69	89	78.5
San Diego	19	25	22.0	66	78	71.6
New Orleans	23	31	27.1	74	88	80.8
Houston	21	32	26.9	71	90	80.5
Miami	25	32	28.3	77	89	82.9
Average United States	14.3	25.8	19.0	57.8	78.4	66.2

United States - Average temperatures in October
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-8	1	-3.2	18	34	26.2
Anchorage	-1	6	2.4	31	42	36.4
Seattle	8	16	12.0	47	60	53.7
Fargo (275 m.)	2	13	7.5	35	56	45.5
Helena (1,250 m.)	1	14	7.5	33	58	45.5
Minneapolis	5	14	9.7	41	58	49.5
Yellowstone Lake (2,400 m.)	-6	8	0.9	22	46	33.6
Portland_ME	5	15	10.2	41	60	50.3
Chicago	8	18	13.2	47	64	55.7
Salt Lake City (1,300 m.)	6	19	12.5	44	65	54.5
New York	11	18	14.4	51	65	58.0
Denver (1,600 m.)	3	18	10.6	37	65	51.2
Kansas City (270 m.)	9	20	14.7	49	68	58.5
Washington	11	21	16.0	52	69	60.8
Sacramento	10	26	18.1	50	79	64.6
San Francisco	12	23	17.4	53	73	63.3
Mammoth Lakes (2,400 m.)	-1	16	7.5	30	61	45.4
Las Vegas (650 m.)	15	27	21.3	60	81	70.4
Los Angeles	16	27	21.2	60	80	70.2
Atlanta (300 m.)	13	24	18.1	55	74	64.7
Phoenix (350 m.)	19	32	25.2	66	89	77.4
Dallas	14	26	19.9	57	78	67.7
San Diego	16	24	20.1	61	75	68.1
New Orleans	18	27	22.5	64	81	72.4
Houston	16	28	22.1	61	83	71.9
Miami	23	30	26.7	74	86	80.0
Average United States	8.7	19.6	13.2	47.7	67.4	55.8

United States - Average temperatures in November
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-20	-11	-15.5	-4	12	4.1
Anchorage	-8	-2	-4.6	18	29	23.6
Seattle	5	11	8.0	41	52	46.5
Fargo (275 m.)	-6	3	-1.4	21	38	29.5
Helena (1,250 m.)	-5	6	0.4	23	43	32.8
Minneapolis	-2	6	1.6	28	42	34.8
Yellowstone Lake (2,400 m.)	-12	0	-5.8	11	32	21.5
Portland_ME	0	9	4.4	32	48	40.0
Chicago	2	10	5.9	36	50	42.6
Salt Lake City (1,300 m.)	0	10	5.4	33	51	41.7
New York	5	12	8.8	42	54	47.8
Denver (1,600 m.)	-3	12	4.2	26	53	39.5
Kansas City (270 m.)	2	12	7.4	36	54	45.4
Washington	5	15	10.0	42	58	49.9
Sacramento	6	18	12.1	43	65	53.8
San Francisco	9	18	13.6	48	65	56.5
Mammoth Lakes (2,400 m.)	-5	10	2.4	23	49	36.2
Las Vegas (650 m.)	8	20	14.0	47	67	57.2
Los Angeles	12	24	17.8	53	75	64.0
Atlanta (300 m.)	7	18	12.3	44	64	54.1
Phoenix (350 m.)	12	25	18.4	54	76	65.1
Dallas	8	19	13.6	46	67	56.4
San Diego	12	22	17.0	54	72	62.6
New Orleans	12	22	16.9	54	71	62.5
Houston	11	23	16.7	51	73	62.1
Miami	20	27	23.8	68	81	74.8
Average United States	2.9	13.0	7.1	37.3	55.4	44.8

United States - Average temperatures in December
City (from north to south)	Min (°C)	Max (°C)	Mean (°C)	Min (°F)	Max (°F)	Mean (°F)
Fairbanks	-25	-15	-20.2	-13	4	-4.4
Anchorage	-10	-4	-7.0	14	25	19.4
Seattle	3	8	5.6	37	47	42.0
Fargo (275 m.)	-14	-4	-9.0	8	24	15.8
Helena (1,250 m.)	-10	0	-4.8	14	33	23.4
Minneapolis	-9	-2	-5.6	15	29	22.0
Yellowstone Lake (2,400 m.)	-16	-5	-10.6	3	23	13.0
Portland_ME	-5	4	-0.9	22	38	30.4
Chicago	-3	3	0.0	26	38	32.0
Salt Lake City (1,300 m.)	-4	4	0.1	25	39	32.2
New York	1	7	3.8	33	45	38.9
Denver (1,600 m.)	-8	7	-0.4	18	44	31.2
Kansas City (270 m.)	-3	7	1.8	27	44	35.3
Washington	1	9	5.4	35	49	41.6
Sacramento	4	13	8.4	38	56	47.2
San Francisco	7	15	10.8	44	58	51.5
Mammoth Lakes (2,400 m.)	-8	5	-1.5	17	41	29.2
Las Vegas (650 m.)	4	14	9.0	40	57	48.2
Los Angeles	9	20	14.6	48	69	58.4
Atlanta (300 m.)	4	13	8.5	38	56	47.3
Phoenix (350 m.)	7	19	13.2	45	66	55.8
Dallas	4	14	8.9	38	58	48.1
San Diego	9	19	14.3	49	67	57.7
New Orleans	9	18	13.7	48	65	56.6
Houston	8	18	13.0	46	65	55.5
Miami	18	26	21.8	64	78	71.2
Average United States	-1.1	8.3	2.7	30.0	46.9	36.9

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January
February
March
April
May
June
July
August
September
October
November
December

Bahamas
Bermuda
Canada
Cuba
Mexico

Africa
North America
South America
Antarctica
Asia
Caribbean
Europe
Middle East
Oceania

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