Dayton Weather in 2021

Historical record of Dayton, Ohio weather for the year 2021 based on NOAA data.

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2021 Dayton Weather Extremes
Highest temperature	94 °F	August 27
Lowest temperature	-1 °F	February 17
Highest daily low	76 °F	August 12
Lowest daily high	18 °F	February 16
Most daily precipitation	1.7 inches	September 22
Most daily snow	5.9 inches	February 15
Total annual precipitation	41.3 inches	-
Total annual snow	24.7 inches	-

What was the hottest temperature in Dayton in 2021?

The highest temperature recorded in Dayton, Ohio in 2021 was 94 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Dayton in 2021

Rank	Temperature	Date
1	94 °F	Aug 27
1	94 °F	Jun 29
3	93 °F	Aug 24
3	93 °F	Aug 12
5	92 °F	Aug 26
5	92 °F	Aug 25
5	92 °F	Aug 11
5	92 °F	Jun 12
9	91 °F	Aug 29
9	91 °F	Aug 28
9	91 °F	Aug 23
9	91 °F	Aug 22
9	91 °F	Jul 7

What was the coldest temperature in Dayton in 2021?

The lowest temperature recorded in Dayton, Ohio in 2021 was -1 °F which happened on Feb 17.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Dayton in 2021

Rank	Temperature	Date
1	-1 °F	February 17
2	5 °F	February 16
3	7 °F	February 7
4	10 °F	February 20
4	10 °F	February 6
6	11 °F	February 21
6	11 °F	February 19
6	11 °F	February 8
9	13 °F	January 23
10	14 °F	February 10

January 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	46	25	1.20	0.0
January 2	45	35	0.00	0.0
January 3	38	34	0.02	0.0
January 4	40	29	0.00	0.0
January 5	35	29	0.04	0.3
January 6	38	34	0.00	0.0
January 7	38	31	0.00	0.0
January 8	32	30	0.00	0.0
January 9	36	23	0.00	0.0
January 10	37	20	0.00	0.0
January 11	30	26	0.00	0.0
January 12	32	24	0.00	0.0
January 13	47	28	0.00	0.0
January 14	48	33	0.00	0.0
January 15	46	30	0.15	0.5
January 16	35	28	0.09	1.4
January 17	35	30	0.07	0.5
January 18	32	29	0.01	0.2
January 19	41	21	0.00	0.0
January 20	36	26	0.01	0.1
January 21	48	31	0.00	0.0
January 22	38	18	0.00	0.0
January 23	33	13	0.00	0.0
January 24	31	25	0.02	0.3
January 25	34	30	0.19	0.2
January 26	42	32	0.14	0.0
January 27	33	25	0.00	0.0
January 28	29	19	0.00	0.1
January 29	34	20	0.00	0.0
January 30	35	20	0.34	1.7
January 31	36	31	0.54	1.3

February 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	31	26	0.04	1.8
February 2	30	16	0.00	0.0
February 3	31	17	0.00	0.0
February 4	37	18	0.13	0.4
February 5	34	20	0.00	0.0
February 6	28	10	0.00	0.0
February 7	18	7	0.04	0.8
February 8	28	11	0.00	0.1
February 9	26	16	0.12	1.4
February 10	21	14	0.09	1.2
February 11	23	17	0.03	0.9
February 12	28	18	0.00	0.0
February 13	26	22	0.00	0.0
February 14	23	17	0.00	0.0
February 15	20	15	0.49	5.9
February 16	18	5	0.09	0.9
February 17	23	-1	0.00	0.0
February 18	26	19	0.11	1.3
February 19	24	11	0.00	0.1
February 20	28	10	0.00	0.0
February 21	41	11	0.00	0.0
February 22	43	34	0.00	0.0
February 23	46	35	0.00	0.0
February 24	58	32	0.00	0.0
February 25	43	25	0.00	0.0
February 26	46	24	0.02	0.0
February 27	55	42	0.16	0.0
February 28	61	45	0.63	0.0

March 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	48	26	0.00
March 2	43	19	0.00
March 3	62	27	0.00
March 4	44	24	0.00
March 5	45	20	0.00
March 6	45	24	0.00
March 7	47	21	0.00
March 8	67	27	0.00
March 9	67	41	0.00
March 10	71	47	0.00
March 11	69	54	0.51
March 12	60	37	0.00
March 13	51	30	0.00
March 14	58	33	0.00
March 15	36	29	0.19
March 16	52	36	0.18
March 17	63	35	0.10
March 18	54	36	1.50
March 19	48	29	0.00
March 20	59	25	0.00
March 21	66	32	0.00
March 22	70	41	0.00
March 23	70	45	0.00
March 24	74	54	0.00
March 25	68	44	0.43
March 26	63	49	0.07
March 27	72	43	0.02
March 28	62	35	0.28
March 29	56	27	0.00
March 30	74	42	0.01
March 31	60	36	0.01

April 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	37	26	0.00	0.0
April 2	48	22	0.00	0.0
April 3	63	32	0.00	0.0
April 4	73	45	0.00	0.0
April 5	77	46	0.00	0.0
April 6	78	51	0.00	0.0
April 7	81	60	0.00	0.0
April 8	71	59	0.19	0.0
April 9	78	53	0.10	0.0
April 10	74	55	0.53	0.0
April 11	56	49	0.19	0.0
April 12	64	46	0.04	0.0
April 13	66	43	0.00	0.0
April 14	63	45	0.00	0.0
April 15	51	40	0.00	0.0
April 16	62	37	0.00	0.0
April 17	60	40	0.00	0.0
April 18	63	39	0.00	0.0
April 19	67	40	0.00	0.0
April 20	56	32	0.12	0.8
April 21	45	32	0.10	1.7
April 22	51	29	0.00	0.0
April 23	60	34	0.00	0.0
April 24	56	45	0.11	0.0
April 25	60	39	0.00	0.0
April 26	72	40	0.00	0.0
April 27	82	58	0.00	0.0
April 28	80	66	0.05	0.0
April 29	70	51	0.43	0.0
April 30	68	39	0.03	0.0

May 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	71	32	0.00
May 2	79	58	0.03
May 3	74	57	0.38
May 4	68	53	1.01
May 5	61	46	0.09
May 6	62	40	0.22
May 7	62	41	0.25
May 8	57	37	0.06
May 9	48	39	1.21
May 10	61	34	0.00
May 11	57	43	0.03
May 12	63	38	0.00
May 13	67	39	0.00
May 14	71	42	0.00
May 15	72	47	0.00
May 16	72	56	0.00
May 17	61	56	0.52
May 18	77	57	0.00
May 19	82	58	0.00
May 20	86	61	0.00
May 21	85	64	0.00
May 22	85	61	0.00
May 23	86	66	0.00
May 24	88	68	0.00
May 25	88	67	0.00
May 26	80	65	0.29
May 27	80	59	0.00
May 28	68	47	0.17
May 29	58	46	0.00
May 30	68	41	0.00
May 31	72	46	0.00

June 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	77	55	0.00
June 2	66	60	0.96
June 3	69	59	0.64
June 4	87	59	0.00
June 5	84	62	0.00
June 6	86	66	0.00
June 7	83	68	0.60
June 8	85	70	0.01
June 9	77	68	0.33
June 10	85	66	0.00
June 11	87	70	0.00
June 12	92	67	0.00
June 13	89	67	0.00
June 14	89	62	0.00
June 15	82	57	0.00
June 16	79	57	0.00
June 17	85	57	0.00
June 18	85	66	1.28
June 19	82	67	0.49
June 20	88	73	0.00
June 21	83	64	0.00
June 22	70	53	0.00
June 23	77	56	0.00
June 24	85	59	0.00
June 25	80	71	0.01
June 26	87	74	0.00
June 27	90	74	0.00
June 28	90	74	0.02
June 29	94	73	0.00
June 30	81	72	0.34

July 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	83	66	0.87
July 2	77	61	0.00
July 3	79	57	0.00
July 4	88	67	0.00
July 5	90	69	0.00
July 6	90	71	0.00
July 7	91	71	0.00
July 8	84	71	0.04
July 9	76	62	0.00
July 10	75	61	0.02
July 11	82	68	0.40
July 12	83	71	0.54
July 13	82	70	0.60
July 14	85	69	0.00
July 15	89	72	0.01
July 16	84	69	1.41
July 17	84	67	0.23
July 18	83	64	0.00
July 19	84	63	0.00
July 20	84	65	0.00
July 21	79	63	0.00
July 22	80	58	0.00
July 23	84	64	0.00
July 24	87	69	0.00
July 25	89	73	1.26
July 26	89	69	0.00
July 27	87	64	0.00
July 28	88	69	0.00
July 29	89	73	0.01
July 30	80	68	0.00
July 31	79	64	0.00

August 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	81	59	0.00
August 2	79	55	0.00
August 3	81	56	0.00
August 4	83	56	0.00
August 5	84	62	0.33
August 6	84	66	0.00
August 7	87	68	0.38
August 8	89	67	0.00
August 9	82	71	0.39
August 10	86	72	0.04
August 11	92	76	0.00
August 12	93	76	0.00
August 13	89	73	0.00
August 14	83	64	0.00
August 15	78	63	0.00
August 16	81	64	0.01
August 17	82	68	0.01
August 18	87	68	0.00
August 19	86	71	0.00
August 20	88	64	0.14
August 21	88	67	0.00
August 22	91	68	0.05
August 23	91	71	0.00
August 24	93	70	0.00
August 25	92	75	0.01
August 26	92	70	0.16
August 27	94	67	0.09
August 28	91	71	0.00
August 29	91	73	0.00
August 30	82	69	0.91
August 31	80	69	0.39

September 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	80	60	0.05
September 2	79	55	0.00
September 3	79	55	0.00
September 4	80	61	0.28
September 5	80	61	0.08
September 6	84	58	0.00
September 7	86	65	0.00
September 8	82	59	0.00
September 9	76	55	0.00
September 10	78	53	0.00
September 11	82	60	0.00
September 12	88	68	0.00
September 13	87	68	0.00
September 14	89	68	0.08
September 15	77	60	0.40
September 16	80	58	0.00
September 17	88	60	0.00
September 18	90	65	0.00
September 19	89	66	0.00
September 20	79	69	0.31
September 21	74	67	0.30
September 22	70	52	1.71
September 23	61	49	0.25
September 24	74	48	0.00
September 25	70	50	0.00
September 26	77	46	0.00
September 27	86	59	0.00
September 28	81	58	0.00
September 29	81	51	0.00
September 30	80	53	0.00

October 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	79	52	0.00
October 2	80	52	0.01
October 3	74	66	0.00
October 4	76	62	0.00
October 5	81	57	0.00
October 6	79	65	0.00
October 7	78	65	0.31
October 8	79	63	1.47
October 9	80	60	0.00
October 10	82	65	0.00
October 11	81	64	0.00
October 12	76	56	0.02
October 13	76	54	0.00
October 14	80	68	0.00
October 15	75	60	0.24
October 16	61	45	0.07
October 17	66	43	0.00
October 18	70	42	0.00
October 19	72	45	0.00
October 20	72	50	0.00
October 21	72	52	0.00
October 22	53	48	0.10
October 23	61	46	0.02
October 24	67	50	1.04
October 25	66	48	0.32
October 26	56	39	0.00
October 27	53	32	0.00
October 28	60	49	0.40
October 29	58	54	0.45
October 30	56	50	0.10
October 31	62	45	0.00

November 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	53	37	0.00	0.0
November 2	49	31	0.00	0.0
November 3	49	29	0.00	0.0
November 4	50	30	0.00	0.0
November 5	51	27	0.00	0.0
November 6	56	28	0.00	0.0
November 7	63	32	0.00	0.0
November 8	69	38	0.00	0.0
November 9	64	47	0.00	0.0
November 10	61	40	0.00	0.0
November 11	67	44	0.46	0.0
November 12	54	35	0.03	0.0
November 13	42	33	0.00	0.0
November 14	36	34	0.19	0.4
November 15	40	32	0.01	0.1
November 16	53	34	0.00	0.0
November 17	65	48	0.04	0.0
November 18	58	31	0.42	0.0
November 19	41	30	0.00	0.0
November 20	47	29	0.00	0.0
November 21	45	37	0.25	0.0
November 22	43	22	0.00	0.0
November 23	42	20	0.00	0.0
November 24	52	32	0.00	0.0
November 25	51	36	0.21	0.0
November 26	36	26	0.00	0.0
November 27	43	26	0.00	0.0
November 28	43	28	0.00	0.0
November 29	43	22	0.00	0.0
November 30	53	33	0.00	0.0

December 2021 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	49	30	0.17	0.0
December 2	59	39	0.00	0.0
December 3	53	32	0.00	0.0
December 4	49	33	0.00	0.0
December 5	60	29	0.03	0.0
December 6	60	25	0.71	0.0
December 7	26	19	0.00	0.1
December 8	40	24	0.00	0.2
December 9	50	24	0.00	0.0
December 10	60	45	0.49	0.0
December 11	65	32	0.84	0.0
December 12	47	29	0.00	0.0
December 13	52	32	0.00	0.0
December 14	57	31	0.00	0.0
December 15	63	49	0.00	0.0
December 16	61	37	0.25	0.0
December 17	41	29	0.11	0.0
December 18	50	34	0.21	0.0
December 19	35	30	0.00	0.0
December 20	42	25	0.00	0.0
December 21	44	26	0.00	0.0
December 22	37	22	0.00	0.0
December 23	50	20	0.00	0.0
December 24	60	46	0.01	0.0
December 25	61	43	0.59	0.0
December 26	52	38	0.00	0.0
December 27	66	43	0.22	0.0
December 28	47	40	0.66	0.0
December 29	47	41	0.00	0.0
December 30	48	40	0.17	0.0
December 31	58	44	0.03	0.0

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Weather Station Details

Years	Station	Coordinates
1948–2024	Dayton International Airport	location
1893–1947	Dayton	location