Boise Weather in 1921

Historical record of Boise, Idaho weather for the year 1921 based on NOAA data.

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1921 Boise Weather Extremes
Highest temperature	101 °F	July 19
Lowest temperature	9 °F	February 7
Highest daily low	70 °F	August 2
Lowest daily high	28 °F	January 23
Most daily precipitation	0.5 inches	May 21
Most daily snow	3.0 inches	February 5
Total annual precipitation	10.0 inches	-
Total annual snow	23.1 inches	-

January 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	34	29	0.25	2.5
January 2	41	30	0.17	0.0
January 3	48	32	0.21	0.2
January 4	51	36	0.04	0.0
January 5	37	26	0.00	0.0
January 6	33	24	0.06	1.5
January 7	38	16	0.00	0.0
January 9	33	18	0.04	1.0
January 10	33	16	0.00	0.0
January 11	33	9	0.00	0.0
January 12	33	18	0.20	2.0
January 13	34	15	0.06	0.5
January 14	35	23	0.00	0.0
January 15	45	24	0.00	0.0
January 16	37	30	0.00	0.0
January 17	53	34	0.00	0.0
January 18	51	35	0.15	0.0
January 19	47	32	0.16	0.0
January 20	40	30	0.00	0.0
January 21	34	20	0.00	0.0
January 22	35	20	0.00	0.0
January 23	28	17	0.00	0.0
January 24	41	18	0.03	0.5
January 25	43	30	0.00	0.0
January 26	49	34	0.00	0.0
January 27	53	34	0.00	0.0
January 28	39	29	0.01	0.0
January 29	41	29	0.00	0.0
January 30	44	36	0.00	0.0
January 31	42	27	0.04	0.5

February 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	34	28	0.05	0.5
February 2	35	25	0.08	0.8
February 3	36	29	0.14	0.0
February 4	39	28	0.00	0.0
February 5	36	26	0.24	3.0
February 6	30	12	0.00	0.0
February 7	30	9	0.00	0.0
February 8	36	23	0.00	0.0
February 9	36	30	0.25	2.0
February 10	40	32	0.14	0.0
February 11	42	32	0.00	0.0
February 12	46	30	0.00	0.0
February 13	60	28	0.00	0.0
February 14	56	33	0.00	0.0
February 15	35	22	0.12	1.0
February 16	34	25	0.00	0.0
February 17	36	18	0.00	0.0
February 18	38	17	0.00	0.0
February 19	42	26	0.01	0.1
February 20	40	26	0.14	0.0
February 21	46	30	0.04	0.0
February 22	48	23	0.00	0.0
February 23	52	28	0.00	0.0
February 24	58	29	0.00	0.0
February 25	57	26	0.00	0.0
February 26	48	29	0.00	0.0
February 27	56	28	0.00	0.0
February 28	56	30	0.00	0.0

March 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	56	40	0.07
March 2	65	33	0.00
March 3	67	42	0.00
March 4	58	38	0.04
March 5	52	35	0.22
March 6	50	34	0.00
March 7	50	33	0.00
March 8	53	29	0.00
March 9	59	31	0.00
March 10	59	31	0.00
March 11	54	31	0.00
March 12	54	24	0.00
March 13	57	39	0.24
March 14	46	36	0.02
March 15	46	30	0.00
March 16	60	41	0.01
March 17	70	46	0.00
March 18	56	42	0.08
March 19	46	32	0.00
March 20	52	25	0.00
March 21	59	40	0.00
March 22	58	36	0.00
March 23	58	35	0.08
March 24	56	35	n/a
March 25	50	31	0.03
March 26	50	27	0.00
March 27	54	25	0.00
March 28	62	26	0.00
March 29	56	32	0.00
March 30	59	25	0.00
March 31	71	32	0.00

April 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	70	32	0.00	0.0
April 2	77	41	0.00	0.0
April 3	49	29	0.06	0.6
April 4	44	28	0.00	0.0
April 5	51	30	0.00	0.0
April 6	53	28	0.00	0.0
April 7	52	25	0.00	0.0
April 8	59	27	0.00	0.0
April 9	66	32	0.00	0.0
April 10	68	37	0.00	0.0
April 11	66	36	0.00	0.0
April 12	66	37	0.00	0.0
April 13	60	39	0.16	0.0
April 14	48	33	0.02	0.0
April 15	52	37	0.02	0.0
April 16	55	37	0.00	0.0
April 17	63	33	0.00	0.0
April 18	66	39	0.00	0.0
April 19	61	40	0.00	0.0
April 20	58	40	0.17	0.0
April 21	62	38	0.00	0.0
April 22	62	50	0.02	0.0
April 23	60	34	0.00	0.0
April 24	50	30	0.00	0.0
April 25	53	23	0.01	0.0
April 26	58	35	0.01	0.0
April 27	61	33	0.00	0.0
April 28	63	46	0.42	0.0
April 29	60	39	0.00	0.0
April 30	62	28	0.00	0.0

May 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	78	43	0.00
May 2	64	40	0.00
May 3	67	33	0.00
May 4	68	42	0.00
May 5	67	41	0.00
May 6	75	42	0.00
May 7	68	46	0.03
May 8	65	40	0.00
May 9	71	34	0.00
May 10	74	48	0.00
May 11	67	36	0.00
May 12	73	33	0.00
May 13	80	42	0.00
May 14	82	40	0.00
May 15	81	51	0.00
May 16	71	41	0.00
May 17	59	35	0.38
May 18	64	42	0.32
May 19	53	47	0.46
May 20	67	49	0.14
May 21	68	46	0.53
May 22	68	46	0.04
May 23	73	43	0.00
May 24	77	48	0.00
May 25	78	51	0.00
May 26	77	48	0.00
May 27	75	36	0.00
May 28	67	48	0.01
May 29	72	47	0.00
May 30	70	46	0.08
May 31	71	47	0.00

June 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	79	52	0.00
June 2	80	46	0.00
June 3	82	53	0.00
June 4	83	52	0.00
June 5	82	49	0.00
June 6	85	51	0.00
June 7	84	52	0.00
June 8	82	56	0.04
June 9	86	50	0.00
June 10	90	52	0.00
June 11	85	56	0.00
June 12	91	50	0.00
June 13	89	53	0.00
June 14	76	47	0.00
June 15	74	43	0.00
June 16	64	43	0.13
June 17	67	46	0.01
June 18	76	41	0.00
June 19	76	51	0.00
June 20	82	46	0.00
June 21	90	52	0.00
June 22	92	55	0.00
June 23	95	62	0.00
June 24	87	66	0.01
June 25	86	51	0.00
June 26	86	56	0.00
June 27	92	53	0.00
June 28	95	56	0.00
June 29	84	62	0.00
June 30	88	52	0.00

July 1921 Boise Weather

Day	High (°F)	Low (°F)
July 1	80	57
July 2	72	41
July 3	73	38
July 4	84	42
July 5	90	53
July 6	91	51
July 7	96	53
July 8	98	n/a
July 9	89	55
July 10	91	49
July 11	93	50
July 12	93	49
July 13	97	50
July 14	99	52
July 15	95	53
July 16	91	51
July 17	91	53
July 18	100	50
July 19	101	n/a
July 20	93	61
July 21	90	56
July 22	98	56
July 23	100	n/a
July 24	100	64
July 25	95	66
July 26	87	56
July 27	91	61
July 28	95	63
July 29	95	59
July 30	96	60
July 31	95	65

August 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	92	66	0.00
August 2	90	70	0.00
August 3	94	64	0.00
August 4	89	59	0.00
August 5	87	55	0.00
August 6	88	56	0.00
August 7	95	64	0.00
August 8	96	59	0.00
August 9	92	56	0.00
August 10	94	55	0.00
August 11	95	59	0.00
August 12	98	62	0.00
August 13	98	58	0.00
August 14	91	54	0.07
August 15	78	54	0.00
August 16	86	50	0.00
August 17	86	60	0.00
August 18	80	53	0.00
August 19	85	44	0.00
August 20	94	46	0.00
August 21	86	51	0.00
August 22	88	49	0.00
August 23	91	53	0.00
August 24	82	50	0.00
August 25	84	46	0.00
August 26	86	52	0.00
August 27	88	55	0.00
August 28	91	54	0.00
August 29	94	59	0.00
August 30	93	53	0.00
August 31	90	54	0.00

September 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	83	49	0.00
September 5	76	38	0.00
September 6	77	43	0.00
September 7	75	45	0.00
September 8	76	43	0.00
September 9	71	45	0.00
September 10	66	38	0.00
September 11	67	41	0.00
September 12	59	32	0.00
September 13	66	29	0.00
September 14	64	38	0.00
September 15	64	38	0.00
September 16	71	30	0.00
September 17	83	36	0.00
September 18	67	53	0.04
September 19	63	47	0.40
September 20	63	36	0.00
September 21	74	38	0.00
September 22	79	49	0.00
September 23	69	44	0.00
September 24	74	33	0.00
September 25	73	49	0.00
September 26	78	36	0.00
September 27	79	45	0.00
September 28	66	45	0.00
September 29	67	31	0.00
September 30	67	30	0.00

October 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	68	33	0.00
October 2	67	32	0.00
October 3	76	37	0.00
October 4	77	38	0.00
October 5	77	38	0.00
October 6	80	35	0.00
October 7	72	46	0.00
October 8	73	37	0.00
October 9	73	32	0.00
October 10	74	32	0.00
October 11	76	39	0.00
October 12	72	39	0.00
October 13	70	43	0.00
October 14	66	40	0.02
October 15	63	42	0.00
October 16	68	44	0.00
October 17	61	41	0.00
October 18	71	40	0.02
October 19	n/a	39	0.00
October 20	76	39	0.00
October 21	65	33	0.00
October 22	60	36	0.00
October 23	61	32	0.00
October 24	56	36	0.00
October 25	59	30	0.00
October 26	54	41	0.15
October 27	53	33	0.00
October 28	62	37	0.00
October 29	65	30	0.00
October 30	68	32	0.00
October 31	67	36	0.00

November 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	64	29	0.00	0.0
November 2	64	28	0.00	0.0
November 3	64	27	0.00	0.0
November 4	63	28	0.00	0.0
November 5	63	28	0.00	0.0
November 6	64	32	0.00	0.0
November 7	60	29	0.00	0.0
November 8	59	22	0.00	0.0
November 9	56	22	0.00	0.0
November 10	56	25	0.00	0.0
November 11	59	26	0.00	0.0
November 12	58	27	0.00	0.0
November 13	56	32	0.00	0.0
November 14	67	36	0.00	0.0
November 15	52	25	0.00	0.0
November 16	39	17	0.01	0.0
November 17	37	27	0.01	0.1
November 18	35	18	0.01	0.1
November 19	41	32	0.10	0.0
November 20	49	36	0.32	0.0
November 21	56	47	0.52	0.0
November 22	56	45	0.01	0.0
November 23	55	36	0.02	0.0
November 24	53	38	0.00	0.0
November 25	56	37	0.07	0.0
November 26	50	35	0.05	0.0
November 27	50	39	0.00	0.0
November 28	45	28	0.05	0.0
November 29	49	33	0.16	0.0
November 30	52	42	0.52	0.0

December 1921 Boise Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	53	43	0.14	0.0
December 2	43	36	0.20	0.0
December 3	42	26	0.00	0.0
December 4	43	25	0.00	0.0
December 5	40	25	0.00	0.0
December 6	43	21	0.00	0.0
December 7	43	23	0.00	0.0
December 8	43	24	0.00	0.0
December 9	40	22	0.00	0.0
December 10	36	23	0.00	0.0
December 11	39	25	0.00	0.0
December 12	53	30	0.01	0.0
December 13	46	29	0.00	0.0
December 14	47	30	0.00	0.0
December 15	43	27	0.01	0.1
December 16	32	14	0.00	0.0
December 17	31	18	0.00	0.0
December 18	33	11	0.00	0.0
December 19	30	22	0.01	0.1
December 20	37	23	0.16	1.5
December 21	40	29	0.00	0.0
December 22	32	21	0.00	0.0
December 23	39	23	0.18	2.0
December 24	36	27	0.02	0.2
December 25	34	17	0.16	2.0
December 26	31	15	0.00	0.0
December 27	42	21	0.00	0.0
December 28	36	18	0.00	0.0
December 29	29	18	0.02	0.2
December 30	34	18	0.00	0.0
December 31	39	24	0.00	0.0

Weather Station Details

Years	Station	Coordinates
1940–2023		location
1911–1939	Meridian 1 W	location