Dayton Weather in 1940

Historical record of Dayton, Ohio weather for the year 1940 based on NOAA data.

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1940 Dayton Weather Extremes
Highest temperature	98 °F	July 29
Lowest temperature	-10 °F	January 20
Highest daily low	80 °F	July 26
Lowest daily high	9 °F	January 19
Most daily precipitation	1.9 inches	April 19
Most daily snow	3.5 inches	February 13
Total annual precipitation	36.9 inches	-
Total annual snow	19.5 inches	-

What was the hottest temperature in Dayton in 1940?

The highest temperature recorded in Dayton, Ohio in 1940 was 98 °F which happened on July 29.

Highest Temperatures: All-Time By Year

Highest Temperatures in Dayton in 1940

Rank	Temperature	Date
1	98 °F	Jul 29
2	97 °F	Jul 27
2	97 °F	Jul 26
2	97 °F	Jul 24
5	96 °F	Jul 30
5	96 °F	Jul 28
5	96 °F	Jul 25
8	94 °F	Jul 23
9	93 °F	Jul 22
9	93 °F	Jul 21
9	93 °F	Jul 20

What was the coldest temperature in Dayton in 1940?

The lowest temperature recorded in Dayton, Ohio in 1940 was -10 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Dayton in 1940

Rank	Temperature	Date
1	-10 °F	January 20
1	-10 °F	January 19
3	-3 °F	January 27
3	-3 °F	January 26
5	-2 °F	January 6
6	0 °F	January 25
6	0 °F	January 5
8	1 °F	January 9
8	1 °F	January 7
10	2 °F	January 4
10	2 °F	January 3

January 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	17	3	0.00	n/a
January 2	16	3	0.00	0.0
January 3	20	2	0.00	0.0
January 4	25	2	0.06	0.5
January 5	10	0	0.00	0.0
January 6	23	-2	0.02	0.2
January 7	26	1	0.03	0.3
January 8	26	20	0.00	0.0
January 9	27	1	0.00	0.0
January 10	36	3	0.19	2.0
January 11	38	22	0.03	0.0
January 12	36	35	0.00	0.0
January 13	46	34	0.00	0.0
January 14	52	34	0.86	1.0
January 15	35	22	0.00	0.0
January 16	25	15	0.13	2.0
January 17	20	n/a	0.02	0.5
January 18	n/a	5	0.00	0.0
January 19	9	-10	0.00	0.0
January 20	n/a	-10	0.00	0.0
January 21	21	5	0.00	0.0
January 22	25	5	0.00	0.0
January 23	23	9	0.14	0.8
January 24	20	n/a	0.00	0.0
January 25	n/a	0	0.00	0.0
January 26	14	-3	0.00	0.0
January 27	15	-3	0.00	0.0
January 28	22	4	0.00	0.0
January 29	28	4	0.11	2.0
January 30	33	19	0.00	0.0
January 31	35	21	0.00	0.0

February 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	40	15	0.00	0.0
February 2	20	15	0.00	0.0
February 3	40	13	0.00	0.0
February 4	38	18	0.00	0.0
February 5	38	30	0.27	0.0
February 6	38	n/a	0.44	0.0
February 7	n/a	28	0.00	0.0
February 8	45	25	0.00	0.0
February 9	45	31	0.14	0.0
February 10	37	35	0.68	0.5
February 11	39	22	0.00	0.0
February 12	53	22	0.00	0.0
February 13	32	30	0.32	3.5
February 14	30	19	0.00	0.0
February 15	35	11	0.00	0.0
February 16	39	11	0.00	0.0
February 17	44	23	0.05	0.0
February 18	38	24	0.40	0.0
February 19	40	36	0.07	0.2
February 20	35	33	0.01	0.0
February 21	35	27	0.00	0.0
February 22	34	27	0.00	0.0
February 23	39	25	0.08	0.2
February 24	37	25	0.00	0.0
February 25	25	17	0.00	0.0
February 26	36	17	0.25	2.5
February 27	40	22	0.06	0.0
February 28	39	35	0.03	0.0
February 29	40	33	0.00	0.0

March 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	52	30	0.03	0.0
March 2	55	31	1.24	0.0
March 3	58	37	0.37	0.0
March 4	36	n/a	0.00	0.0
March 5	n/a	31	0.02	0.0
March 6	36	30	0.00	0.0
March 7	38	27	0.00	0.0
March 8	39	27	0.00	0.0
March 9	40	31	0.00	0.0
March 10	38	30	0.00	0.0
March 11	35	23	0.00	0.0
March 12	40	20	0.05	0.0
March 13	54	22	0.29	2.0
March 14	32	29	0.01	0.0
March 15	37	23	0.05	0.0
March 16	45	24	0.00	0.0
March 17	70	33	0.00	0.0
March 18	58	40	0.02	0.0
March 19	53	30	0.00	0.0
March 20	42	32	0.00	0.0
March 21	44	26	0.01	0.0
March 22	29	22	0.00	0.0
March 23	25	17	0.00	0.0
March 24	26	14	0.03	0.8
March 25	27	10	0.00	0.0
March 26	43	14	0.00	0.0
March 27	54	24	0.04	0.0
March 28	66	43	0.03	0.0
March 29	72	50	0.05	0.0
March 30	53	48	0.47	0.0
March 31	69	48	0.01	0.0

April 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	60	40	0.29	0.0
April 2	70	39	0.00	0.0
April 3	80	40	0.05	0.0
April 4	60	49	0.00	0.0
April 5	52	37	0.00	0.0
April 6	53	31	0.10	0.0
April 7	57	34	0.83	0.0
April 8	56	49	0.02	0.0
April 9	51	39	0.00	0.0
April 10	56	33	0.00	0.0
April 11	55	n/a	1.18	0.5
April 12	n/a	20	0.00	0.0
April 13	38	22	0.00	0.0
April 14	50	26	0.03	0.0
April 15	60	30	0.05	0.0
April 16	63	45	0.21	0.0
April 17	65	44	0.53	0.0
April 18	46	44	0.30	0.0
April 19	43	n/a	1.86	0.0
April 20	n/a	37	0.37	0.0
April 21	55	34	0.00	0.0
April 22	60	38	0.00	0.0
April 23	56	41	0.23	0.0
April 24	59	36	0.00	0.0
April 25	58	41	0.00	0.0
April 26	57	41	0.00	0.0
April 27	60	39	0.00	0.0
April 28	71	41	0.00	0.0
April 29	72	49	0.12	0.0
April 30	75	n/a	0.14	0.0

May 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	n/a	n/a	0.11
May 2	n/a	36	0.07
May 3	43	35	0.01
May 4	68	36	0.00
May 5	72	38	0.00
May 6	85	52	0.62
May 7	82	55	0.00
May 8	86	56	0.00
May 9	65	47	0.00
May 10	68	44	0.00
May 11	71	48	0.00
May 12	74	46	0.00
May 13	84	53	0.00
May 14	87	n/a	0.35
May 15	n/a	n/a	0.05
May 16	n/a	48	0.01
May 17	61	46	0.00
May 18	74	45	0.19
May 19	70	48	0.33
May 20	80	62	0.00
May 21	85	55	0.00
May 22	85	57	0.08
May 23	59	59	0.57
May 24	60	51	0.46
May 25	68	49	0.19
May 26	63	50	0.15
May 27	64	52	0.84
May 28	69	53	0.88
May 29	70	55	0.00
May 30	62	57	1.56
May 31	67	54	0.03

June 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	69	55	0.00
June 2	80	57	0.00
June 3	83	63	0.00
June 4	86	61	0.00
June 5	88	67	0.00
June 6	91	71	0.00
June 7	91	71	0.57
June 8	85	68	0.19
June 9	87	69	0.00
June 10	87	68	0.07
June 11	86	70	0.00
June 12	87	72	0.00
June 13	85	70	0.00
June 14	86	69	0.00
June 15	86	71	0.00
June 16	83	71	0.25
June 17	82	70	0.26
June 18	84	71	0.00
June 19	81	n/a	0.00
June 20	n/a	52	0.00
June 21	72	50	0.00
June 22	88	53	0.00
June 23	85	65	0.26
June 24	78	68	0.00
June 25	80	60	0.14
June 26	77	55	0.19
June 27	80	58	0.00
June 28	85	65	0.16
June 29	70	60	0.00
June 30	80	56	0.00

July 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	77	58	0.00
July 2	76	56	0.00
July 3	73	55	0.00
July 4	76	52	0.00
July 5	81	55	0.00
July 6	83	57	0.00
July 7	81	63	0.00
July 8	83	59	0.00
July 9	87	67	0.00
July 10	91	67	0.00
July 11	91	n/a	0.40
July 12	n/a	61	0.06
July 13	80	49	0.00
July 14	81	53	0.00
July 15	86	60	0.22
July 16	72	63	0.01
July 17	80	56	0.00
July 18	87	61	0.00
July 19	90	67	0.00
July 20	93	69	0.00
July 21	93	74	0.00
July 22	93	75	0.02
July 23	94	78	0.00
July 24	97	76	0.00
July 25	96	78	0.00
July 26	97	80	0.00
July 27	97	79	0.00
July 28	96	77	0.42
July 29	98	75	0.00
July 30	96	78	0.00
July 31	89	74	0.00

August 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	83	62	0.00
August 2	88	61	0.00
August 3	90	69	0.00
August 4	86	73	0.16
August 5	91	73	0.00
August 6	85	75	0.08
August 7	84	61	0.00
August 8	85	61	0.00
August 9	90	64	0.00
August 10	90	72	0.00
August 11	91	73	0.00
August 12	92	74	0.00
August 13	91	74	0.00
August 14	89	71	0.17
August 15	89	69	0.00
August 16	90	69	0.00
August 17	91	71	0.00
August 18	89	74	0.60
August 19	75	62	0.00
August 20	70	57	0.00
August 21	74	47	0.00
August 22	79	50	0.02
August 23	78	52	0.00
August 24	81	53	0.00
August 25	87	58	0.85
August 26	88	62	0.00
August 27	82	73	0.00
August 28	87	70	0.20
August 29	81	69	0.51
August 30	82	70	0.04
August 31	81	62	0.00

September 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	75	65	0.00
September 2	72	58	0.00
September 3	77	55	0.00
September 4	81	57	0.00
September 5	82	59	0.00
September 6	82	63	0.00
September 7	84	61	0.00
September 8	83	63	0.00
September 9	75	61	0.22
September 10	65	56	0.00
September 11	61	48	0.00
September 12	63	49	0.00
September 13	70	43	0.00
September 14	77	49	0.00
September 15	71	51	0.00
September 16	70	49	0.00
September 17	75	49	0.00
September 18	79	50	0.00
September 19	86	53	0.00
September 20	90	60	0.00
September 21	91	63	0.00
September 22	81	62	0.00
September 23	79	58	0.03
September 24	75	n/a	1.20
September 25	n/a	45	0.00
September 26	58	36	0.00
September 27	64	38	0.00
September 28	70	40	0.00
September 29	72	46	0.00
September 30	67	49	0.00

October 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	66	48	0.00
October 2	70	46	0.00
October 3	70	41	0.00
October 4	75	43	0.03
October 5	77	51	0.00
October 6	82	62	0.38
October 7	65	57	0.00
October 8	62	46	0.00
October 9	62	40	0.00
October 10	62	40	0.00
October 11	73	40	0.00
October 12	75	47	0.00
October 13	79	51	0.00
October 14	81	58	0.48
October 15	57	47	0.00
October 16	53	40	0.00
October 17	62	38	0.00
October 18	51	39	0.00
October 19	52	42	0.00
October 20	51	38	0.00
October 21	54	39	0.00
October 22	65	37	0.00
October 23	76	39	0.00
October 24	71	54	1.14
October 25	69	49	0.09
October 26	75	50	0.00
October 27	78	51	0.00
October 28	64	48	0.03
October 29	67	51	0.16
October 30	62	45	0.00
October 31	65	41	0.97

November 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	57	42	0.24
November 2	64	45	0.00
November 3	66	42	0.00
November 4	71	45	0.31
November 5	57	n/a	0.19
November 6	n/a	42	0.00
November 7	45	30	0.00
November 8	42	30	0.00
November 9	58	29	0.10
November 10	65	34	0.46
November 11	67	n/a	0.50
November 12	n/a	30	0.00
November 13	35	26	0.00
November 14	32	20	0.00
November 15	32	20	0.00
November 16	45	21	0.00
November 17	50	23	0.00
November 18	51	22	0.00
November 19	59	27	0.00
November 20	60	37	0.00
November 21	65	51	0.12
November 22	60	n/a	0.00
November 23	n/a	38	0.48
November 24	40	38	0.00
November 25	41	29	0.02
November 26	45	29	1.00
November 27	35	31	0.00
November 28	37	22	0.00
November 29	40	22	0.00
November 30	52	30	0.03

December 1940 Dayton Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	37	32	0.00
December 2	36	22	0.00
December 3	24	11	0.00
December 4	40	11	0.00
December 5	34	24	0.00
December 6	49	26	0.09
December 7	45	28	0.00
December 8	42	28	0.00
December 9	53	28	0.00
December 10	47	36	0.00
December 11	48	30	0.15
December 12	48	33	0.53
December 13	37	37	0.00
December 14	42	28	0.00
December 15	57	29	0.53
December 16	57	33	0.08
December 17	35	30	0.00
December 18	38	30	0.00
December 19	48	30	0.00
December 20	51	34	0.00
December 21	38	34	0.00
December 22	45	32	0.00
December 23	45	31	0.00
December 24	57	28	0.00
December 25	59	29	0.14
December 26	57	38	0.04
December 27	52	n/a	0.52
December 28	n/a	41	0.90
December 29	40	37	0.00
December 30	36	34	0.00
December 31	40	33	0.00

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Weather Station Details

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