McKinney Weather in 2021

Historical record of McKinney, Texas weather for the year 2021 based on NOAA data.

Jump to Month:

Year:

2021 McKinney Weather Extremes
Highest temperature	100 °F	September 20
Lowest temperature	-4 °F	February 16
Highest daily low	79 °F	August 26
Lowest daily high	13 °F	February 15
Most daily precipitation	2.2 inches	May 31
Total annual precipitation	38.2 inches	-

What was the hottest temperature in McKinney in 2021?

The highest temperature recorded in McKinney, Texas in 2021 was 100 °F which happened on September 20.

Highest Temperatures: All-Time By Year

Highest Temperatures in McKinney in 2021

Rank	Temperature	Date
1	100 °F	Sep 20
2	98 °F	Aug 31
2	98 °F	Aug 11
2	98 °F	Aug 9
2	98 °F	Jul 31
2	98 °F	Jul 30
2	98 °F	Jul 27
8	97 °F	Sep 4
8	97 °F	Sep 1
8	97 °F	Aug 25
8	97 °F	Aug 10
8	97 °F	Jul 29
8	97 °F	Jul 28
8	97 °F	Jul 26
8	97 °F	Jun 13

What was the coldest temperature in McKinney in 2021?

The lowest temperature recorded in McKinney, Texas in 2021 was -4 °F which happened on Feb 16.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in McKinney in 2021

Rank	Temperature	Date
1	-4 °F	February 16
2	4 °F	February 15
3	9 °F	February 14
4	13 °F	February 19
5	18 °F	February 17
6	19 °F	February 13
7	21 °F	February 20
7	21 °F	February 18
7	21 °F	February 12
10	23 °F	February 11

January 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	40	36	0.00
January 2	53	35	0.00
January 3	63	33	0.00
January 4	66	32	0.00
January 5	65	31	0.00
January 6	56	44	0.04
January 7	51	40	0.00
January 8	49	32	0.00
January 9	48	25	0.00
January 10	36	32	0.04
January 11	49	29	0.00
January 12	52	24	0.00
January 13	62	27	0.00
January 14	64	32	0.00
January 15	51	39	0.00
January 16	55	32	0.00
January 17	59	29	0.00
January 18	68	30	0.00
January 19	56	48	0.30
January 20	48	44	0.27
January 21	53	44	0.00
January 22	52	47	0.00
January 23	54	45	0.03
January 24	60	49	0.16
January 25	67	43	0.18
January 26	57	34	0.00
January 27	48	31	0.00
January 28	48	25	0.00
January 29	59	32	0.00
January 30	75	49	0.05
January 31	56	39	0.00

February 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	58	33	0.00
February 2	61	36	0.00
February 3	69	40	0.00
February 4	65	39	0.00
February 5	57	35	0.00
February 6	50	37	0.01
February 7	57	28	0.00
February 8	64	39	0.00
February 9	39	29	0.00
February 10	31	26	0.00
February 11	27	23	0.00
February 12	27	21	0.00
February 13	33	19	0.00
February 14	20	9	0.02
February 15	13	4	0.00
February 16	19	-4	0.01
February 17	26	18	0.08
February 18	31	21	0.00
February 19	39	13	0.00
February 20	53	21	0.00
February 21	71	41	0.00
February 22	69	29	0.00
February 23	79	35	0.00
February 24	72	49	0.00
February 25	52	44	1.76
February 26	58	45	0.94
February 27	64	49	0.01
February 28	76	49	0.25

March 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	58	44	0.09
March 2	62	36	0.00
March 3	68	36	0.00
March 4	72	40	0.00
March 5	63	47	0.00
March 6	64	39	0.00
March 7	66	34	0.00
March 8	69	37	0.00
March 9	71	54	0.00
March 10	74	61	0.00
March 11	76	69	0.00
March 12	75	64	0.00
March 13	78	65	0.00
March 14	72	51	0.06
March 15	77	46	0.00
March 16	78	51	0.00
March 17	72	47	0.17
March 18	60	42	0.00
March 19	65	40	0.00
March 20	66	41	0.00
March 21	67	39	0.00
March 22	63	53	0.83
March 23	71	48	0.00
March 24	77	43	0.95
March 25	66	47	0.38
March 26	76	45	0.00
March 27	80	50	0.00
March 28	71	47	0.00
March 29	75	41	0.00
March 30	77	57	0.15
March 31	66	44	0.00

April 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	67	34	0.00
April 2	67	36	0.00
April 3	69	55	0.00
April 4	70	57	0.00
April 5	76	53	0.00
April 6	80	64	0.00
April 7	76	52	0.00
April 8	82	45	0.00
April 9	79	59	0.00
April 10	72	46	0.00
April 11	83	42	0.00
April 12	83	54	0.00
April 13	80	55	0.05
April 14	68	56	0.01
April 15	62	55	0.55
April 16	57	52	0.67
April 17	61	47	0.00
April 18	67	42	0.00
April 19	73	38	0.00
April 20	60	38	0.00
April 21	62	32	0.00
April 22	64	52	0.00
April 23	69	57	1.30
April 24	70	51	0.00
April 25	78	46	0.00
April 26	79	62	0.00
April 27	75	67	0.00
April 28	80	71	0.12
April 29	72	64	1.53
April 30	69	62	0.15

May 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	74	59	0.04
May 2	80	64	0.00
May 3	88	66	0.55
May 4	73	54	0.00
May 5	75	47	0.00
May 6	82	53	0.00
May 7	82	53	0.00
May 8	87	61	0.00
May 9	82	58	0.00
May 10	60	55	2.05
May 11	60	56	0.49
May 12	64	55	0.00
May 13	74	57	0.00
May 14	76	51	0.00
May 15	82	59	0.00
May 16	73	65	1.36
May 17	81	66	0.20
May 18	72	63	0.54
May 19	81	64	0.00
May 20	77	66	0.42
May 21	83	69	0.00
May 22	77	70	0.11
May 23	81	68	0.03
May 24	79	68	0.58
May 25	81	70	0.26
May 26	88	72	0.00
May 27	88	67	0.96
May 28	81	65	0.29
May 29	83	64	0.00
May 30	76	60	0.00
May 31	71	63	2.23

June 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	72	63	0.04
June 2	81	59	0.00
June 3	84	61	0.00
June 4	80	64	0.00
June 5	85	65	0.34
June 6	86	65	0.04
June 7	77	67	0.03
June 8	87	71	0.00
June 9	90	76	0.00
June 10	89	76	0.00
June 11	91	76	0.00
June 12	90	69	1.06
June 13	97	73	0.00
June 14	95	76	0.00
June 15	95	71	0.00
June 16	95	71	0.00
June 17	96	72	0.00
June 18	93	76	0.00
June 19	92	68	0.00
June 20	95	73	0.00
June 21	90	67	0.07
June 22	85	64	0.00
June 23	94	73	0.00
June 24	94	78	0.00
June 25	94	79	0.00
June 26	94	78	0.00
June 27	92	76	0.00
June 28	87	73	0.51
June 29	88	73	0.18
June 30	91	73	0.00

July 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	94	74	0.07
July 2	87	75	0.70
July 3	82	69	0.02
July 4	87	73	0.00
July 5	86	69	0.00
July 6	90	79	0.00
July 7	94	72	0.00
July 8	93	74	0.00
July 9	89	73	0.00
July 10	93	74	0.00
July 11	91	69	0.69
July 12	90	68	0.00
July 13	92	71	0.00
July 14	91	69	0.00
July 15	92	72	0.00
July 16	93	76	0.00
July 17	93	78	0.00
July 18	94	78	0.17
July 19	82	74	0.89
July 20	88	71	0.00
July 21	90	70	0.00
July 22	91	69	0.00
July 23	94	74	0.00
July 24	94	76	0.00
July 25	96	74	0.00
July 26	97	76	0.00
July 27	98	77	0.00
July 28	97	74	0.00
July 29	97	74	0.00
July 30	98	76	0.00
July 31	98	77	0.00

August 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	94	76	0.56
August 2	87	74	0.03
August 3	90	70	0.00
August 4	90	70	0.00
August 5	90	71	0.00
August 6	92	72	0.00
August 7	94	74	0.00
August 8	96	78	0.00
August 9	98	79	0.00
August 10	97	78	0.00
August 11	98	77	0.00
August 12	96	77	0.00
August 13	96	75	0.00
August 14	87	74	0.21
August 15	91	75	0.00
August 16	92	72	0.24
August 17	88	72	1.41
August 18	81	73	1.37
August 19	93	75	0.21
August 20	95	77	0.00
August 21	95	76	0.00
August 22	95	76	0.00
August 23	95	73	0.00
August 24	95	70	0.00
August 25	97	79	0.00
August 26	96	79	0.00
August 27	92	76	0.00
August 28	92	72	0.00
August 29	89	74	0.00
August 30	96	73	0.00
August 31	98	73	0.00

September 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	97	77	0.00
September 2	96	75	0.00
September 3	94	76	0.00
September 4	97	73	0.00
September 5	92	75	0.00
September 6	93	71	0.00
September 7	93	64	0.00
September 8	92	66	0.26
September 9	91	63	0.00
September 10	91	63	0.00
September 11	89	62	0.00
September 12	90	63	0.00
September 13	88	68	0.00
September 14	87	69	0.03
September 15	91	64	0.00
September 16	90	67	0.00
September 17	92	67	0.00
September 18	95	68	0.00
September 19	93	69	0.00
September 20	100	73	0.00
September 21	86	64	0.02
September 22	84	53	0.00
September 23	84	49	0.00
September 24	86	50	0.00
September 25	90	55	0.00
September 26	91	59	0.00
September 27	88	61	0.00
September 28	93	64	0.00
September 29	91	71	0.00
September 30	88	70	0.00

October 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	81	68	0.00
October 2	84	66	0.02
October 3	87	60	0.00
October 4	89	57	0.00
October 5	88	54	0.00
October 6	87	53	0.00
October 7	91	56	0.00
October 8	93	63	0.00
October 9	93	66	0.00
October 10	91	64	0.76
October 11	83	58	0.00
October 12	82	56	0.00
October 13	87	65	1.41
October 14	84	67	0.35
October 15	78	54	0.00
October 16	74	46	0.00
October 17	75	43	0.00
October 18	76	44	0.00
October 19	79	57	0.00
October 20	82	62	0.00
October 21	84	56	0.00
October 22	84	53	0.00
October 23	86	61	0.00
October 24	85	67	0.22
October 25	86	55	0.00
October 26	84	65	0.00
October 27	77	60	1.32
October 28	72	58	0.00
October 29	71	51	0.00
October 30	74	40	0.00
October 31	80	43	0.00

November 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	78	49	0.00
November 2	58	48	0.82
November 3	49	46	0.65
November 4	60	41	0.00
November 5	61	36	0.00
November 6	66	35	0.00
November 7	73	38	0.00
November 8	72	46	0.00
November 9	76	55	0.00
November 10	75	60	0.79
November 11	67	44	0.00
November 12	69	39	0.00
November 13	63	34	0.00
November 14	71	40	0.00
November 15	79	41	0.00
November 16	79	59	0.00
November 17	81	54	0.00
November 18	62	41	0.00
November 19	60	32	0.00
November 20	71	44	0.00
November 21	70	50	0.00
November 22	66	39	0.00
November 23	70	38	0.00
November 24	77	53	0.00
November 25	66	34	0.00
November 26	58	28	0.00
November 27	56	37	0.36
November 28	66	42	0.00
November 29	72	36	0.00
November 30	75	42	0.00

December 2021 McKinney Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	74	46	0.00
December 2	80	40	0.00
December 3	74	55	0.00
December 4	71	60	0.00
December 5	77	57	0.00
December 6	69	36	0.00
December 7	57	30	0.00
December 8	58	38	0.00
December 9	79	55	0.00
December 10	81	64	0.00
December 11	73	31	0.00
December 12	57	26	0.00
December 13	66	37	0.01
December 14	70	56	0.02
December 15	80	68	0.00
December 16	76	60	0.00
December 17	78	59	0.05
December 18	71	38	0.67
December 19	48	32	0.00
December 20	50	37	0.06
December 21	61	30	0.00
December 22	67	35	0.00
December 23	74	50	0.00
December 24	77	61	0.00
December 25	81	59	0.00
December 26	76	55	0.00
December 27	78	62	0.00
December 28	79	51	0.00
December 29	72	49	0.23
December 30	73	42	0.00
December 31	71	49	0.00

Next Year >

Weather Station Details

Years	Station	Coordinates
1999–2024	McKinney Municipal Airport	location
1903–1998	McKinney Municipal Airport	location