Boulder Weather in 1940

Historical record of Boulder, Colorado weather for the year 1940 based on NOAA data.

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1940 Boulder Weather Extremes
Highest temperature	96 °F	July 24
Lowest temperature	-10 °F	January 17
Highest daily low	68 °F	July 13
Lowest daily high	5 °F	January 18
Most daily precipitation	1.1 inches	September 9
Most daily snow	8.0 inches	January 17
Total annual precipitation	20.3 inches	-
Total annual snow	76.2 inches	-

What was the hottest temperature in Boulder in 1940?

The highest temperature recorded in Boulder, Colorado in 1940 was 96 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Boulder in 1940

Rank	Temperature	Date
1	96 °F	Jul 24
1	96 °F	Jul 23
3	94 °F	Jun 25
3	94 °F	Jun 17
5	93 °F	Jul 13
6	92 °F	Aug 1
6	92 °F	Jul 25
6	92 °F	Jul 14
9	91 °F	Aug 4
9	91 °F	Jul 22
9	91 °F	Jul 10
9	91 °F	Jun 27

What was the coldest temperature in Boulder in 1940?

The lowest temperature recorded in Boulder, Colorado in 1940 was -10 °F which happened on Jan 17.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Boulder in 1940

Rank	Temperature	Date
1	-10 °F	January 17
2	-9 °F	January 23
3	-7 °F	January 24
4	-6 °F	December 14
4	-6 °F	January 18
6	-2 °F	December 13
7	-1 °F	January 25
7	-1 °F	January 21
9	1 °F	January 20
10	2 °F	November 13

January 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	28	20	0.00	n/a
January 2	44	20	n/a	n/a
January 3	34	27	0.00	n/a
January 4	28	18	0.10	0.5
January 5	22	5	0.31	4.5
January 6	11	3	0.16	3.6
January 7	34	7	n/a	n/a
January 8	30	16	n/a	n/a
January 9	40	20	n/a	n/a
January 10	49	20	n/a	n/a
January 11	41	16	n/a	n/a
January 12	40	12	0.47	6.0
January 13	25	14	n/a	n/a
January 14	31	10	n/a	n/a
January 15	49	24	n/a	n/a
January 16	53	35	n/a	n/a
January 17	43	-10	0.36	8.0
January 18	5	-6	n/a	n/a
January 19	22	3	n/a	n/a
January 20	22	1	0.02	0.5
January 21	13	-1	n/a	n/a
January 22	32	5	n/a	n/a
January 23	34	-9	0.01	0.5
January 24	14	-7	0.00	n/a
January 25	22	-1	n/a	n/a
January 26	44	9	n/a	n/a
January 27	47	27	n/a	n/a
January 28	51	34	n/a	n/a
January 29	52	31	n/a	n/a
January 30	52	28	n/a	n/a
January 31	45	25	0.11	0.6

February 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	28	19	0.08	0.6
February 2	n/a	17	0.00	0.0
February 3	48	n/a	0.00	0.0
February 4	44	28	0.00	0.0
February 5	44	28	0.00	0.0
February 6	53	30	0.00	0.0
February 7	44	23	0.05	1.1
February 8	n/a	20	0.00	0.0
February 9	46	n/a	0.00	0.0
February 10	54	31	0.00	0.0
February 11	40	18	0.15	3.0
February 12	37	12	0.00	0.0
February 13	48	25	0.00	0.0
February 14	46	25	0.00	0.0
February 15	31	10	0.64	7.2
February 16	35	11	0.00	0.0
February 17	36	12	0.00	0.0
February 18	37	22	0.07	2.0
February 19	34	13	0.04	1.0
February 20	44	17	0.00	0.0
February 21	38	15	0.00	0.0
February 22	36	23	0.00	0.0
February 23	51	21	0.06	1.0
February 24	53	28	0.00	0.0
February 25	58	37	0.00	0.0
February 26	54	39	0.00	0.0
February 27	61	46	0.00	0.0
February 28	71	43	0.00	0.0
February 29	68	34	0.02	0.0

March 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	36	26	0.30	0.5
March 2	47	34	0.00	0.0
March 3	43	27	0.32	3.0
March 4	46	28	0.00	0.0
March 5	55	39	0.32	3.5
March 6	42	23	0.00	0.0
March 7	47	27	0.00	0.0
March 8	49	35	0.00	0.0
March 9	50	27	0.05	0.5
March 10	37	28	0.00	0.0
March 11	38	15	0.34	6.5
March 12	34	15	0.00	0.0
March 13	38	27	0.00	0.0
March 14	54	34	0.00	0.0
March 15	59	33	0.00	0.0
March 16	67	40	0.00	0.0
March 17	52	23	0.24	0.6
March 18	58	30	0.00	0.0
March 19	60	26	0.00	0.0
March 20	60	34	0.00	0.0
March 21	61	37	0.00	0.0
March 22	69	27	0.00	0.0
March 23	52	22	0.00	0.0
March 24	63	22	0.00	0.0
March 25	74	47	0.00	0.0
March 26	67	40	0.00	0.0
March 27	67	37	0.01	0.0
March 28	55	34	0.00	0.0
March 29	53	40	0.00	0.0
March 30	69	41	0.00	0.0
March 31	77	44	0.00	0.0

April 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	73	33	0.00	0.0
April 2	55	35	0.00	0.0
April 3	58	28	0.00	0.0
April 4	55	24	0.00	0.0
April 5	47	31	0.05	0.0
April 6	40	31	0.44	0.0
April 7	52	28	0.00	0.0
April 8	60	39	0.00	0.0
April 9	67	35	0.00	0.0
April 10	42	15	0.27	1.0
April 11	28	9	0.13	4.0
April 12	53	27	0.00	0.0
April 13	70	44	0.00	0.0
April 14	78	42	0.00	0.0
April 15	70	36	0.00	0.0
April 16	36	26	0.78	3.0
April 17	n/a	30	0.00	0.0
April 18	67	n/a	0.00	0.0
April 19	70	42	0.00	0.0
April 20	77	40	0.00	0.0
April 21	72	33	0.00	0.0
April 22	53	32	0.00	0.0
April 23	55	33	0.00	0.0
April 24	65	38	0.01	0.0
April 25	52	42	0.35	0.0
April 26	62	42	0.01	0.0
April 27	68	37	0.01	0.0
April 28	51	37	0.00	0.0
April 29	60	34	0.00	0.0
April 30	50	32	0.00	0.0

May 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	71	42	0.00
May 2	79	39	0.00
May 3	84	55	0.00
May 4	82	47	0.00
May 5	64	44	0.00
May 6	72	42	0.00
May 7	65	43	0.53
May 8	57	40	0.01
May 9	72	46	0.00
May 10	74	49	0.00
May 11	84	57	0.00
May 12	75	54	0.15
May 13	75	37	0.03
May 14	64	40	0.00
May 15	78	52	0.00
May 16	67	45	0.02
May 17	60	40	0.69
May 18	59	40	0.00
May 19	77	52	0.00
May 20	65	38	0.77
May 21	46	38	0.19
May 22	61	42	0.00
May 23	69	46	0.00
May 24	71	43	0.00
May 25	67	40	0.00
May 26	67	46	0.01
May 27	67	46	0.07
May 28	65	46	0.04
May 29	70	50	0.06
May 30	80	54	0.00
May 31	87	62	0.00

June 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	86	57	0.00
June 2	88	54	0.00
June 3	72	47	0.00
June 4	77	52	0.00
June 5	79	50	0.00
June 6	68	43	0.30
June 7	75	50	0.00
June 8	73	44	0.00
June 9	62	42	0.25
June 10	68	45	0.00
June 11	77	51	0.00
June 12	79	56	0.00
June 13	83	53	0.00
June 14	88	54	0.00
June 15	89	58	0.00
June 16	88	65	0.00
June 17	94	62	0.00
June 18	90	58	0.00
June 19	83	60	0.00
June 20	88	60	0.00
June 21	85	58	0.00
June 22	89	48	0.00
June 23	69	46	0.00
June 24	80	58	0.00
June 25	94	66	0.00
June 26	89	60	0.00
June 27	91	56	0.00
June 28	89	54	0.00
June 29	89	64	0.00
June 30	89	54	0.28

July 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	67	53	0.11
July 2	72	49	0.88
July 3	71	50	0.03
July 4	75	56	0.00
July 5	86	57	0.00
July 6	90	61	0.00
July 7	78	58	0.09
July 8	90	60	0.00
July 9	90	59	0.00
July 10	91	59	0.00
July 11	77	52	0.05
July 12	83	57	0.00
July 13	93	68	0.00
July 14	92	60	0.00
July 15	78	57	0.00
July 16	83	64	0.01
July 17	89	58	0.01
July 18	83	56	0.19
July 19	84	64	0.00
July 20	87	66	0.00
July 21	87	61	0.00
July 22	91	64	0.00
July 23	96	64	0.00
July 24	96	67	0.00
July 25	92	60	0.00
July 26	74	56	0.00
July 27	83	61	0.07
July 28	80	55	0.41
July 29	82	55	0.01
July 30	83	59	0.01
July 31	88	58	0.00

August 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	92	59	0.00
August 2	90	58	0.00
August 3	82	54	0.28
August 4	91	54	0.00
August 5	69	49	0.00
August 6	80	56	0.00
August 7	79	59	0.00
August 8	87	53	0.01
August 9	89	57	0.00
August 10	88	60	0.01
August 11	85	52	0.00
August 12	79	56	0.00
August 13	88	57	0.00
August 14	88	59	0.00
August 15	88	58	0.00
August 16	84	56	0.00
August 17	78	54	0.18
August 18	70	52	0.00
August 19	75	60	0.03
August 20	82	54	0.00
August 21	81	53	0.09
August 22	79	51	0.01
August 23	83	60	0.00
August 24	80	47	0.00
August 25	74	52	0.74
August 26	76	52	0.05
August 27	75	55	0.07
August 28	84	52	0.00
August 29	75	48	0.00
August 30	75	52	0.00
August 31	86	56	0.00

September 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	88	55	0.00
September 2	84	58	0.00
September 3	78	51	0.04
September 4	79	52	0.13
September 5	79	52	0.00
September 6	84	53	0.00
September 7	84	58	0.00
September 8	88	60	0.00
September 9	64	46	1.11
September 10	54	46	0.13
September 11	65	46	0.01
September 12	79	47	0.00
September 13	77	50	0.38
September 14	72	49	0.45
September 15	73	49	0.02
September 16	79	57	0.00
September 17	77	55	0.00
September 18	74	53	0.00
September 19	72	52	0.04
September 20	73	52	0.63
September 21	63	52	0.08
September 22	63	52	0.08
September 23	68	48	0.13
September 24	63	45	0.88
September 25	58	46	0.04
September 26	68	45	0.03
September 27	75	47	0.00
September 28	72	47	0.32
September 29	53	45	1.00
September 30	59	37	0.00

October 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	63	39	0.18
October 2	67	40	0.00
October 3	64	45	0.00
October 4	67	45	0.00
October 5	55	36	0.27
October 6	52	34	0.02
October 7	66	42	0.00
October 8	66	44	0.00
October 9	66	40	0.13
October 10	62	41	0.00
October 11	72	41	0.00
October 12	73	42	0.00
October 13	74	38	0.00
October 14	46	32	0.00
October 15	64	42	0.00
October 16	68	39	0.00
October 17	60	39	0.00
October 18	78	47	0.00
October 19	72	50	0.00
October 20	72	45	0.00
October 21	75	46	0.00
October 22	75	42	0.00
October 23	70	46	0.00
October 24	72	46	0.00
October 25	72	45	0.00
October 26	69	45	0.00
October 27	58	34	0.00
October 28	51	30	0.00
October 29	55	37	0.00
October 30	57	34	0.00
October 31	54	35	0.00

November 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	60	35	0.00	0.0
November 2	70	35	0.00	0.0
November 3	62	45	0.00	0.0
November 4	48	33	0.00	0.0
November 5	41	18	0.00	0.0
November 6	55	25	0.00	0.0
November 7	51	31	0.00	0.0
November 8	55	33	0.03	0.0
November 9	56	n/a	0.00	0.0
November 10	n/a	n/a	0.57	5.0
November 11	n/a	9	0.01	0.5
November 12	19	6	0.00	0.0
November 13	25	2	0.00	0.0
November 14	37	7	0.00	0.0
November 15	53	25	0.00	0.0
November 16	60	30	0.00	0.0
November 17	57	33	0.00	0.0
November 18	53	n/a	0.00	0.0
November 19	n/a	23	0.09	1.0
November 20	27	12	0.00	0.0
November 21	49	18	0.01	0.0
November 22	24	21	0.04	0.5
November 23	38	20	0.00	0.0
November 24	48	24	0.00	0.0
November 25	43	26	0.00	0.0
November 26	38	21	0.00	0.0
November 27	47	20	0.00	0.0
November 28	53	30	0.00	0.0
November 29	63	41	0.00	0.0
November 30	50	31	0.00	0.0

December 1940 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	42	24	0.00	0.0
December 2	45	27	0.00	0.0
December 3	45	28	0.00	0.0
December 4	44	28	0.00	0.0
December 5	61	28	0.00	0.0
December 6	54	36	0.00	0.0
December 7	60	25	0.00	0.0
December 8	71	30	0.00	0.0
December 9	61	n/a	0.00	0.0
December 10	n/a	n/a	0.00	0.0
December 11	n/a	15	0.00	0.0
December 12	14	n/a	0.31	4.5
December 13	n/a	-2	0.09	1.5
December 14	15	-6	0.01	0.5
December 15	21	4	0.01	0.0
December 16	20	13	0.00	0.0
December 17	21	12	0.00	0.0
December 18	40	18	0.00	0.0
December 19	47	18	0.00	0.0
December 20	50	24	0.00	0.0
December 21	44	28	0.00	0.0
December 22	50	31	0.00	0.0
December 23	51	31	0.00	0.0
December 24	44	32	0.00	0.0
December 25	52	28	0.00	0.0
December 26	46	27	0.00	0.0
December 27	46	24	0.00	0.0
December 28	52	27	0.00	0.0
December 29	47	24	0.00	0.0
December 30	37	25	0.00	0.0
December 31	41	26	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1893–2024	Boulder	location