Castle Rock Weather in 2021

Historical record of Castle Rock, Colorado weather for the year 2021 based on NOAA data.

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2021 Castle Rock Weather Extremes
Highest temperature	101 °F	September 12
Lowest temperature	-5 °F	February 16
Highest daily low	70 °F	July 28
Lowest daily high	10 °F	February 15
Most daily precipitation	1.5 inches	March 15
Most daily snow	11.5 inches	March 15
Total annual precipitation	16.0 inches	-
Total annual snow	47.8 inches	-

What was the hottest temperature in Castle Rock in 2021?

The highest temperature recorded in Castle Rock, Colorado in 2021 was 101 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Castle Rock in 2021

Rank	Temperature	Date
1	101 °F	Sep 12
1	101 °F	Jun 16
3	100 °F	Jun 18
4	99 °F	Sep 11
4	99 °F	Aug 19
4	99 °F	Jul 29
4	99 °F	Jul 10
4	99 °F	Jun 17
4	99 °F	Jun 15
10	98 °F	Jul 9
10	98 °F	Jun 24

What was the coldest temperature in Castle Rock in 2021?

The lowest temperature recorded in Castle Rock, Colorado in 2021 was -5 °F which happened on Feb 16.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Castle Rock in 2021

Rank	Temperature	Date
1	-5 °F	February 16
2	-3 °F	February 15
2	-3 °F	February 14
4	4 °F	February 13
5	10 °F	December 11
5	10 °F	February 12
7	11 °F	January 27
8	12 °F	December 18
8	12 °F	January 11
10	13 °F	February 18

January 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	48	21	0.00	0.0
January 2	43	20	0.00	0.0
January 3	54	22	0.00	0.0
January 4	57	27	0.00	0.0
January 5	57	37	0.00	0.0
January 6	59	21	0.00	0.0
January 7	49	25	0.00	0.0
January 8	52	21	0.00	0.0
January 9	47	27	0.00	0.0
January 10	34	19	0.10	2.0
January 11	40	12	0.00	0.0
January 12	51	15	0.00	0.0
January 13	58	30	0.00	0.0
January 14	65	33	0.00	0.0
January 15	39	14	0.00	0.0
January 16	48	29	0.00	0.0
January 17	37	29	0.00	0.0
January 18	52	34	0.00	0.0
January 19	37	25	0.00	0.0
January 20	53	27	0.00	0.0
January 21	63	29	0.00	0.0
January 22	53	30	0.00	0.0
January 23	56	21	0.00	0.0
January 24	57	20	0.00	0.0
January 25	45	25	0.02	0.2
January 26	40	21	0.15	1.0
January 27	28	11	0.05	1.0
January 28	55	26	0.00	0.0
January 29	60	40	0.00	0.0
January 30	64	35	0.00	0.0
January 31	53	23	0.00	0.0

February 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	55	29	0.00	0.0
February 2	60	34	0.00	0.0
February 3	68	44	0.00	0.0
February 4	68	15	0.25	3.0
February 5	41	23	0.00	0.0
February 6	45	22	0.00	0.0
February 7	53	27	0.00	0.0
February 8	58	19	0.00	0.0
February 9	55	19	0.00	0.0
February 10	55	18	0.00	0.0
February 11	50	16	0.00	0.0
February 12	47	10	0.00	0.0
February 13	21	4	0.00	0.0
February 14	10	-3	0.00	0.4
February 15	10	-3	0.01	0.4
February 16	41	-5	0.00	0.0
February 17	47	15	0.00	0.0
February 18	47	13	0.01	0.1
February 19	41	15	0.00	0.0
February 20	52	27	0.00	0.0
February 21	61	17	0.11	1.7
February 22	48	27	0.00	0.0
February 23	63	27	0.00	0.0
February 24	65	25	0.00	0.0
February 25	45	20	0.17	2.5
February 26	49	19	0.00	0.0
February 27	52	25	0.00	0.0
February 28	37	17	0.00	0.0

March 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	44	19	0.00	0.0
March 2	54	28	0.00	0.0
March 3	64	28	0.00	0.0
March 4	66	40	0.00	0.0
March 5	44	25	0.40	2.6
March 6	56	35	0.00	0.0
March 7	68	37	0.00	0.0
March 8	70	42	0.00	0.0
March 9	70	44	0.00	0.0
March 10	71	35	0.00	0.0
March 11	56	26	0.00	0.0
March 12	48	34	0.00	0.0
March 13	47	37	0.02	0.0
March 14	40	31	0.75	5.2
March 15	34	21	1.52	11.5
March 16	52	22	0.00	0.0
March 17	40	31	0.00	0.2
March 18	42	21	0.00	0.0
March 19	53	31	0.00	0.0
March 20	62	40	0.00	0.0
March 21	73	40	0.00	0.0
March 22	47	32	0.60	7.2
March 23	44	26	0.00	0.0
March 24	n/a	31	0.13	1.8
March 25	43	29	0.00	0.0
March 26	54	36	0.00	0.0
March 27	50	28	0.00	0.0
March 28	53	32	0.00	0.0
March 29	70	47	0.00	0.0
March 30	75	28	0.00	0.0
March 31	40	23	0.00	0.0

April 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	57	33	0.00	0.0
April 2	73	43	0.00	0.0
April 3	75	41	0.00	0.0
April 4	80	54	0.00	0.0
April 5	80	41	0.00	0.0
April 6	80	40	0.00	0.0
April 7	57	34	0.05	0.0
April 8	62	39	0.00	0.0
April 9	72	37	0.00	0.0
April 10	52	31	0.00	0.0
April 11	70	39	0.00	0.0
April 12	60	29	0.00	0.0
April 13	48	35	0.00	0.0
April 14	53	34	0.02	0.0
April 15	53	35	0.00	0.0
April 16	51	28	0.40	3.0
April 17	53	30	0.00	0.0
April 18	45	27	0.36	0.0
April 19	58	35	0.00	0.0
April 20	39	16	0.32	3.8
April 21	36	26	0.01	0.0
April 22	42	28	0.00	0.0
April 23	55	38	0.00	0.0
April 24	65	35	0.00	0.0
April 25	71	41	0.00	0.0
April 26	83	55	0.00	0.0
April 27	81	42	0.00	0.0
April 28	58	37	0.78	0.0
April 29	57	34	0.00	0.0
April 30	71	46	0.00	0.0

May 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	81	50	0.00
May 2	87	51	0.00
May 3	70	38	0.96
May 4	47	38	0.42
May 5	62	42	0.02
May 6	61	41	0.00
May 7	76	45	0.00
May 8	84	57	0.00
May 9	79	40	0.20
May 10	51	40	0.04
May 11	50	36	0.20
May 12	53	37	0.29
May 13	66	46	0.00
May 14	75	43	0.00
May 15	78	46	0.00
May 16	74	49	0.08
May 17	61	52	0.00
May 18	69	49	0.10
May 19	65	44	0.21
May 20	75	54	0.00
May 21	85	62	0.00
May 22	84	51	0.00
May 23	70	43	0.41
May 24	76	41	0.00
May 25	79	50	0.00
May 26	77	59	0.00
May 27	83	43	0.00
May 28	77	50	0.00
May 29	83	53	0.00
May 30	78	58	0.17
May 31	63	49	0.90

June 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	62	43	0.03
June 2	72	43	0.01
June 3	76	56	0.00
June 4	82	56	0.00
June 5	86	59	0.00
June 6	93	58	0.16
June 7	88	60	0.00
June 8	90	57	0.00
June 9	93	55	0.00
June 10	84	53	0.00
June 11	97	64	0.00
June 12	82	62	0.00
June 13	92	64	0.00
June 14	94	67	0.00
June 15	99	66	0.00
June 16	101	66	0.00
June 17	99	68	0.00
June 18	100	66	0.00
June 19	89	65	0.00
June 20	92	59	0.00
June 21	87	54	0.13
June 22	79	57	0.00
June 23	95	63	0.00
June 24	98	64	0.00
June 25	87	56	0.08
June 26	83	57	0.60
June 27	72	58	0.02
June 28	76	55	0.02
June 29	75	53	0.00
June 30	79	60	0.00

July 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	84	64	0.00
July 2	81	60	0.14
July 3	87	61	0.00
July 4	94	63	0.00
July 5	92	62	0.00
July 6	91	64	0.04
July 7	84	60	0.85
July 8	89	69	0.00
July 9	98	69	0.00
July 10	99	65	0.00
July 11	85	59	0.00
July 12	87	64	0.00
July 13	85	65	0.00
July 14	77	60	0.00
July 15	88	55	0.00
July 16	92	63	0.00
July 17	93	65	0.00
July 18	95	61	0.07
July 19	93	62	0.00
July 20	95	65	0.00
July 21	95	65	0.22
July 22	83	65	0.60
July 23	95	66	0.00
July 24	96	64	0.00
July 25	85	63	0.00
July 26	94	61	0.00
July 27	94	64	0.00
July 28	97	70	0.00
July 29	99	69	0.00
July 30	94	67	0.00
July 31	94	66	0.05

August 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	79	64	0.26
August 2	82	61	0.00
August 3	90	62	0.00
August 4	78	60	0.28
August 5	86	58	0.00
August 6	92	58	0.00
August 7	97	60	0.00
August 8	84	57	0.00
August 9	94	62	0.00
August 10	97	60	0.00
August 11	96	60	0.00
August 12	97	62	0.00
August 13	90	62	0.00
August 14	93	66	0.00
August 15	96	64	0.18
August 16	92	57	0.00
August 17	93	63	0.00
August 18	89	68	0.00
August 19	99	68	0.00
August 20	85	59	0.37
August 21	84	62	0.00
August 22	83	63	0.08
August 23	94	60	0.00
August 24	96	59	0.00
August 25	95	65	0.00
August 26	92	64	0.00
August 27	90	58	0.00
August 28	97	60	0.00
August 29	97	64	0.00
August 30	85	60	0.00
August 31	96	61	0.00

September 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	97	68	0.00
September 2	94	60	0.00
September 3	86	64	0.08
September 4	88	55	0.10
September 5	88	54	0.00
September 6	89	57	0.00
September 7	95	55	0.00
September 8	89	59	0.00
September 9	91	54	0.00
September 10	96	69	0.00
September 11	99	56	0.00
September 12	101	59	0.00
September 13	90	63	0.00
September 14	87	57	0.00
September 15	90	53	0.00
September 16	94	62	0.00
September 17	96	51	0.00
September 18	76	53	0.00
September 19	97	67	0.00
September 20	91	55	0.00
September 21	70	43	0.01
September 22	78	44	0.00
September 23	83	46	0.00
September 24	85	48	0.00
September 25	80	54	0.00
September 26	90	50	0.00
September 27	91	55	0.00
September 28	91	60	0.00
September 29	83	50	0.00
September 30	73	52	0.70

October 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	58	47	0.00
October 2	70	50	0.00
October 3	72	46	0.00
October 4	79	45	0.00
October 5	83	55	0.00
October 6	84	53	0.00
October 7	83	48	0.00
October 8	80	50	0.00
October 9	82	54	0.00
October 10	78	40	0.00
October 11	68	40	0.00
October 12	n/a	n/a	0.00
October 13	70	36	0.05
October 14	58	35	0.00
October 15	55	35	0.10
October 16	56	34	0.00
October 17	75	37	0.00
October 18	83	48	0.05
October 19	81	46	0.00
October 20	62	30	0.00
October 21	67	39	0.00
October 22	70	39	0.00
October 23	76	42	0.00
October 24	76	41	0.00
October 25	69	49	0.00
October 26	88	51	0.00
October 27	77	34	0.27
October 28	57	33	0.00
October 29	67	37	0.00
October 30	78	39	0.00
October 31	75	37	0.00

November 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	45	34	0.00
November 2	43	37	0.00
November 3	50	36	0.00
November 4	62	35	0.00
November 5	78	41	0.00
November 6	76	36	0.00
November 7	83	49	0.00
November 8	82	36	0.00
November 9	68	34	0.00
November 10	72	36	0.00
November 11	67	32	0.00
November 12	73	27	0.00
November 13	63	39	0.00
November 14	71	32	0.00
November 15	73	50	0.00
November 16	76	59	0.00
November 17	74	27	0.00
November 18	41	20	0.00
November 19	63	36	0.00
November 20	68	38	0.00
November 21	60	28	0.07
November 22	61	33	0.00
November 23	75	34	0.00
November 24	77	37	0.00
November 25	44	18	0.05
November 26	63	32	0.00
November 27	58	35	0.00
November 28	70	31	0.00
November 29	71	39	0.00
November 30	69	40	0.00

December 2021 Castle Rock Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	69	40	0.00	0.0
December 2	76	40	0.00	0.0
December 3	82	38	0.00	0.0
December 4	67	36	0.00	0.0
December 5	74	44	0.00	0.0
December 6	69	19	0.00	0.0
December 7	50	26	0.00	0.0
December 8	60	32	0.00	0.0
December 9	62	35	0.00	0.0
December 10	60	26	0.01	0.1
December 11	39	10	0.01	0.1
December 12	58	36	0.00	0.0
December 13	70	33	0.00	0.0
December 14	71	41	0.00	0.0
December 15	70	39	0.05	0.0
December 16	51	16	0.00	0.0
December 17	59	21	0.00	0.0
December 18	49	12	0.00	0.0
December 19	53	27	0.00	0.0
December 20	66	27	0.00	0.0
December 21	65	34	0.00	0.0
December 22	65	31	0.00	0.0
December 23	70	36	0.00	0.0
December 24	70	42	0.00	0.0
December 25	60	35	0.02	0.0
December 26	57	32	0.00	0.0
December 27	56	21	0.00	0.0
December 28	48	25	0.00	0.0
December 29	42	16	0.00	0.0
December 30	52	21	0.00	0.0
December 31	53	35	0.00	0.0

Next Year >

Weather Station Details

Years	Station	Coordinates
1893–2024	Castle Rock	location