Boulder Weather in 1991

Historical record of Boulder, Colorado weather for the year 1991 based on NOAA data.

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1991 Boulder Weather Extremes
Highest temperature	96 °F	July 6
Lowest temperature	-2 °F	January 29
Highest daily low	70 °F	July 7
Lowest daily high	18 °F	November 2
Most daily precipitation	2.3 inches	June 1
Most daily snow	8.7 inches	October 30
Total annual precipitation	21.2 inches	-
Total annual snow	84.0 inches	-

What was the hottest temperature in Boulder in 1991?

The highest temperature recorded in Boulder, Colorado in 1991 was 96 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Boulder in 1991

Rank	Temperature	Date
1	96 °F	Jul 6
1	96 °F	Jul 5
3	95 °F	Jun 25
4	94 °F	Jul 17
5	92 °F	Jul 15
6	91 °F	Aug 22
6	91 °F	Jul 30
6	91 °F	Jul 16
6	91 °F	Jul 4
6	91 °F	Jun 26

What was the coldest temperature in Boulder in 1991?

The lowest temperature recorded in Boulder, Colorado in 1991 was -2 °F which happened on Jan 29.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Boulder in 1991

Rank	Temperature	Date
1	-2 °F	January 29
2	-1 °F	November 2
3	0 °F	January 30
4	1 °F	November 3
5	2 °F	January 26
6	5 °F	October 31
6	5 °F	January 24
8	6 °F	January 21
9	7 °F	October 29
9	7 °F	January 20

January 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	56	32	0.00	0.0
January 2	51	17	0.00	0.0
January 3	23	14	0.00	0.0
January 4	27	14	0.00	0.0
January 5	41	17	0.00	0.0
January 6	41	11	0.00	0.0
January 7	56	10	0.00	0.0
January 8	47	31	0.00	0.0
January 9	37	18	0.00	0.0
January 10	42	21	0.00	0.0
January 11	48	23	0.00	0.0
January 12	55	31	0.00	0.0
January 13	53	36	0.00	0.0
January 14	47	30	0.00	0.0
January 15	37	23	0.00	0.0
January 16	43	23	0.25	4.0
January 17	38	18	0.00	0.0
January 18	49	20	0.00	0.0
January 19	51	26	0.18	2.5
January 20	29	7	0.20	3.1
January 21	30	6	0.00	0.0
January 22	43	11	0.00	0.0
January 23	28	15	0.08	1.3
January 24	41	5	0.00	0.0
January 25	34	8	0.16	3.1
January 26	45	2	0.00	0.0
January 27	42	19	0.00	0.0
January 28	45	27	0.00	0.0
January 29	28	-2	0.18	3.0
January 30	47	0	0.00	0.0
January 31	58	29	0.00	0.0

February 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	61	40	0.00	0.0
February 2	55	29	0.00	0.0
February 3	57	32	0.00	0.0
February 4	49	30	0.00	0.0
February 5	55	26	0.00	0.0
February 6	47	30	0.00	0.0
February 7	50	26	0.00	0.0
February 8	54	28	0.00	0.0
February 9	53	30	0.00	0.0
February 10	55	28	0.00	0.0
February 11	61	31	0.00	0.0
February 12	57	33	0.00	0.0
February 13	53	33	0.00	0.0
February 14	49	24	0.00	0.0
February 15	54	24	0.00	0.0
February 16	55	40	0.00	0.0
February 17	53	34	0.00	0.0
February 18	44	24	0.00	0.0
February 19	49	19	0.01	0.1
February 20	58	42	0.00	0.0
February 21	61	37	0.00	0.0
February 22	65	30	0.00	0.0
February 23	59	30	0.00	0.0
February 24	35	23	0.13	2.5
February 25	44	8	0.01	0.2
February 26	45	17	0.00	0.0
February 27	55	25	0.00	0.0
February 28	57	31	0.00	0.0

March 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	61	37	0.00	0.0
March 2	44	20	0.04	0.4
March 3	60	31	0.00	0.0
March 4	67	49	0.00	0.0
March 5	62	37	0.15	0.0
March 6	41	27	0.01	0.1
March 7	40	20	0.00	0.0
March 8	44	25	0.00	0.0
March 9	60	21	0.00	0.0
March 10	64	32	0.00	0.0
March 11	63	35	0.00	0.0
March 12	56	31	0.01	0.0
March 13	51	27	0.00	0.0
March 14	46	25	0.00	0.0
March 15	40	26	0.00	0.0
March 16	41	26	0.00	0.0
March 17	56	25	0.00	0.0
March 18	64	36	0.00	0.0
March 19	58	26	0.00	0.0
March 20	56	46	0.00	0.0
March 21	55	31	0.00	0.0
March 22	51	30	0.11	1.0
March 23	60	32	0.00	0.0
March 24	69	30	0.00	0.0
March 25	69	36	0.00	0.0
March 26	64	39	0.00	0.0
March 27	49	32	0.02	0.0
March 28	51	28	0.00	0.0
March 29	48	30	0.09	0.5
March 30	53	21	0.00	0.0
March 31	65	32	0.00	0.0

April 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	70	37	0.00	0.0
April 2	65	44	0.00	0.0
April 3	63	35	0.00	0.0
April 4	74	36	0.00	0.0
April 5	80	47	0.00	0.0
April 6	80	52	0.00	0.0
April 7	73	46	0.00	0.0
April 8	56	37	0.01	0.0
April 9	58	28	0.00	0.0
April 10	58	30	0.00	0.0
April 11	52	31	0.45	4.3
April 12	36	29	0.61	7.5
April 13	43	19	0.07	0.6
April 14	53	26	0.00	0.0
April 15	65	34	0.00	0.0
April 16	62	34	0.00	0.0
April 17	59	33	0.00	0.0
April 18	57	40	0.09	0.0
April 19	50	30	0.01	0.0
April 20	53	34	0.00	0.0
April 21	53	39	0.12	0.0
April 22	59	35	0.11	0.0
April 23	59	37	0.00	0.0
April 24	65	38	0.01	0.0
April 25	71	41	0.00	0.0
April 26	70	42	0.00	0.0
April 27	52	33	0.00	0.0
April 28	55	35	0.00	0.0
April 29	55	34	0.00	0.0
April 30	52	31	0.93	6.7

May 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
May 1	62	31	0.00	0.0
May 2	61	36	0.00	0.0
May 3	58	29	0.00	0.0
May 4	57	36	0.27	0.0
May 5	58	33	0.18	0.4
May 6	65	37	0.00	0.0
May 7	65	41	0.00	0.0
May 8	78	40	0.00	0.0
May 9	81	50	0.00	0.0
May 10	84	49	0.00	0.0
May 11	84	50	0.00	0.0
May 12	82	49	0.00	0.0
May 13	80	46	0.00	0.0
May 14	82	46	0.00	0.0
May 15	80	46	0.50	0.0
May 16	61	43	0.99	0.0
May 17	64	42	0.03	0.0
May 18	72	52	0.05	0.0
May 19	84	50	0.00	0.0
May 20	71	55	0.00	0.0
May 21	79	53	0.00	0.0
May 22	71	52	0.00	0.0
May 23	61	47	0.33	0.0
May 24	68	49	0.18	0.0
May 25	76	43	0.02	0.0
May 26	74	42	0.10	0.0
May 27	73	50	0.02	0.0
May 28	72	53	0.00	0.0
May 29	73	44	0.00	0.0
May 30	73	46	0.00	0.0
May 31	72	49	0.23	0.0

June 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	62	50	2.33
June 2	67	48	0.32
June 3	66	47	0.08
June 4	76	48	0.00
June 5	75	50	0.13
June 6	71	54	0.05
June 7	69	51	0.11
June 8	79	48	0.01
June 9	79	54	0.00
June 10	71	55	0.13
June 11	80	48	0.00
June 12	84	58	0.00
June 13	82	53	0.18
June 14	79	52	0.05
June 15	72	50	0.11
June 16	79	50	0.08
June 17	87	50	0.00
June 18	84	53	0.00
June 19	83	54	0.00
June 20	88	54	0.00
June 21	75	56	0.01
June 22	81	58	0.00
June 23	84	54	0.00
June 24	90	53	0.00
June 25	95	56	0.00
June 26	91	57	0.00
June 27	85	58	0.00
June 28	87	58	0.00
June 29	87	60	0.00
June 30	89	60	0.00

July 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	85	53	0.00
July 2	81	56	0.00
July 3	81	55	0.00
July 4	91	54	0.01
July 5	96	62	0.00
July 6	96	61	0.01
July 7	85	70	0.01
July 8	80	57	0.00
July 9	82	57	0.25
July 10	80	53	0.51
July 11	80	59	0.12
July 12	83	56	0.00
July 13	83	52	0.00
July 14	90	54	0.00
July 15	92	56	0.00
July 16	91	59	0.00
July 17	94	62	0.00
July 18	90	63	0.00
July 19	85	57	0.00
July 20	85	57	0.32
July 21	83	59	0.00
July 22	79	59	0.62
July 23	62	55	0.65
July 24	63	55	0.18
July 25	73	51	0.00
July 26	76	50	0.43
July 27	80	53	0.00
July 28	87	53	0.00
July 29	89	55	0.00
July 30	91	65	0.00
July 31	90	58	0.00

August 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	87	62	0.08
August 2	76	58	0.01
August 3	68	56	1.48
August 4	72	53	0.08
August 5	81	58	0.02
August 6	83	56	0.17
August 7	84	51	0.02
August 8	81	53	0.00
August 9	80	52	0.00
August 10	77	54	0.04
August 11	83	55	0.00
August 12	77	56	0.00
August 13	74	52	0.06
August 14	84	52	0.00
August 15	88	58	0.01
August 16	80	60	0.03
August 17	80	54	0.00
August 18	79	54	0.04
August 19	76	56	0.00
August 20	82	55	0.02
August 21	86	54	0.01
August 22	91	56	0.00
August 23	88	58	0.00
August 24	89	58	0.00
August 25	89	60	0.00
August 26	90	59	0.00
August 27	88	60	0.00
August 28	85	62	0.01
August 29	86	55	0.00
August 30	85	55	0.00
August 31	84	53	0.00

September 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	84	51	0.00
September 2	85	57	0.00
September 3	75	58	0.05
September 4	82	52	0.00
September 5	79	55	0.00
September 6	77	55	0.00
September 7	83	56	0.08
September 8	79	55	0.00
September 9	76	49	0.00
September 10	75	56	0.00
September 11	78	51	0.00
September 12	75	50	0.06
September 13	71	50	0.00
September 14	80	49	0.00
September 15	70	44	0.00
September 16	71	37	0.00
September 17	66	46	0.00
September 18	54	39	0.20
September 19	67	36	0.00
September 20	78	42	0.00
September 21	84	51	0.00
September 22	75	39	0.00
September 23	71	36	0.00
September 24	68	35	0.00
September 25	75	45	0.00
September 26	78	42	0.00
September 27	77	47	0.00
September 28	83	46	0.00
September 29	81	51	0.00
September 30	73	49	0.82

October 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
October 1	82	45	0.00	0.0
October 2	79	53	0.00	0.0
October 3	81	55	0.00	0.0
October 4	n/a	32	0.31	0.5
October 5	54	27	0.00	0.0
October 6	65	31	0.00	0.0
October 7	80	42	0.00	0.0
October 8	81	51	0.00	0.0
October 9	73	45	0.00	0.0
October 10	79	46	0.00	0.0
October 11	79	50	0.00	0.0
October 12	83	45	0.00	0.0
October 13	75	53	0.00	0.0
October 14	67	34	0.00	0.0
October 15	77	43	0.00	0.0
October 16	87	55	0.00	0.0
October 17	84	59	0.00	0.0
October 18	75	34	0.00	0.0
October 19	61	32	0.00	0.0
October 20	61	32	0.00	0.0
October 21	74	39	0.00	0.0
October 22	75	58	0.00	0.0
October 23	58	43	0.00	0.0
October 24	54	35	0.11	0.0
October 25	52	30	0.01	0.0
October 26	63	30	0.00	0.0
October 27	60	34	0.00	0.0
October 28	55	19	0.20	3.7
October 29	26	7	0.02	0.4
October 30	23	11	0.27	8.7
October 31	35	5	0.01	0.3

November 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	30	11	0.21	5.4
November 2	18	-1	0.24	4.0
November 3	30	1	0.00	0.0
November 4	51	19	0.00	0.0
November 5	53	37	0.00	0.0
November 6	58	31	0.02	0.0
November 7	46	27	0.01	0.1
November 8	63	27	0.00	0.0
November 9	68	42	0.00	0.0
November 10	68	38	0.33	0.0
November 11	49	37	0.00	0.0
November 12	69	31	0.00	0.0
November 13	66	42	0.00	0.0
November 14	51	32	0.00	0.0
November 15	41	29	0.44	1.6
November 16	33	30	0.35	2.8
November 17	49	29	0.65	3.9
November 18	48	29	0.21	1.6
November 19	43	28	0.41	2.9
November 20	57	21	0.00	0.0
November 21	55	39	0.00	0.0
November 22	42	21	0.01	0.1
November 23	34	16	0.00	0.0
November 24	47	22	0.00	0.0
November 25	49	25	0.00	0.0
November 26	55	36	0.00	0.0
November 27	62	26	0.00	0.0
November 28	39	28	0.06	0.1
November 29	32	25	0.22	2.9
November 30	28	11	0.14	3.5

December 1991 Boulder Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	24	8	0.00	0.0
December 2	36	8	0.00	0.0
December 3	43	17	0.00	0.0
December 4	55	23	0.00	0.0
December 5	52	32	0.00	0.0
December 6	63	30	0.00	0.0
December 7	61	36	0.00	0.0
December 8	49	31	0.00	0.0
December 9	48	24	0.00	0.0
December 10	56	35	0.00	0.0
December 11	41	23	0.00	0.0
December 12	49	30	0.00	0.0
December 13	44	29	0.00	0.0
December 14	50	15	0.00	0.0
December 15	49	23	0.00	0.0
December 16	63	26	0.00	0.0
December 17	50	25	0.00	0.0
December 18	35	20	0.00	0.0
December 19	47	22	0.00	0.0
December 20	36	28	0.01	0.2
December 21	50	21	0.00	0.0
December 22	45	28	0.00	0.0
December 23	47	27	0.00	0.0
December 24	44	19	0.00	0.0
December 25	47	21	0.00	0.0
December 26	43	23	0.00	0.0
December 27	41	19	0.00	0.0
December 28	52	21	0.00	0.0
December 29	52	31	0.00	0.0
December 30	43	22	0.00	0.0
December 31	40	19	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1893–2024	Boulder	location