Idaho Falls Weather in 2021

Historical record of Idaho Falls, Idaho weather for the year 2021 based on NOAA data.

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2021 Idaho Falls Weather Extremes
Highest temperature	99 °F	July 18
Lowest temperature	-1 °F	February 10
Highest daily low	64 °F	August 1
Lowest daily high	18 °F	December 28
Most daily precipitation	1.3 inches	July 31
Total annual precipitation	10.9 inches	-

What was the hottest temperature in Idaho Falls in 2021?

The highest temperature recorded in Idaho Falls, Idaho in 2021 was 99 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Idaho Falls in 2021

Rank	Temperature	Date
1	99 °F	Jul 18
1	99 °F	Jul 7
3	96 °F	Aug 13
4	95 °F	Sep 9
4	95 °F	Jul 15
4	95 °F	Jul 12
4	95 °F	Jul 11
4	95 °F	Jun 14
4	95 °F	Jun 13
10	94 °F	Aug 12
10	94 °F	Jul 26
10	94 °F	Jul 17
10	94 °F	Jul 16
10	94 °F	Jul 4
10	94 °F	Jul 3
10	94 °F	Jun 22

What was the coldest temperature in Idaho Falls in 2021?

The lowest temperature recorded in Idaho Falls, Idaho in 2021 was -1 °F which happened 2 different times.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Idaho Falls in 2021

Rank	Temperature	Date
1	-1 °F	February 10
1	-1 °F	January 9
3	0 °F	December 31
4	1 °F	February 25
4	1 °F	January 26
6	2 °F	February 28
6	2 °F	February 24
6	2 °F	February 8
6	2 °F	January 20
6	2 °F	January 12

January 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	26	22	0.00
January 2	32	24	0.03
January 3	36	22	0.00
January 4	36	14	0.11
January 5	34	12	0.06
January 6	24	6	0.00
January 7	31	18	0.00
January 8	28	14	0.00
January 9	26	-1	0.00
January 10	24	15	0.00
January 11	21	3	0.00
January 12	27	2	0.00
January 13	41	21	0.00
January 14	32	12	0.00
January 15	26	6	0.00
January 16	24	16	0.00
January 17	27	21	0.00
January 18	25	13	0.00
January 19	28	7	0.00
January 20	21	2	0.00
January 21	27	16	0.11
January 22	30	19	0.00
January 23	31	13	0.00
January 24	26	21	0.00
January 25	22	6	0.00
January 26	26	1	0.00
January 27	31	8	0.00
January 28	38	27	0.02
January 29	42	32	0.06
January 30	36	20	0.00
January 31	31	13	0.00

February 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	33	10	0.00
February 2	43	19	0.00
February 3	36	25	0.27
February 4	28	20	0.00
February 5	36	23	0.00
February 6	36	24	0.00
February 7	37	21	0.00
February 8	32	2	0.00
February 9	27	7	0.00
February 10	37	-1	0.00
February 11	33	18	0.00
February 12	20	10	0.06
February 13	20	6	0.07
February 14	20	3	0.00
February 15	23	16	0.14
February 16	31	20	0.00
February 17	28	14	0.00
February 18	25	13	0.00
February 19	33	22	0.00
February 20	32	10	0.06
February 21	31	11	0.00
February 22	39	28	0.00
February 23	38	21	0.00
February 24	28	2	0.00
February 25	29	1	0.00
February 26	29	22	0.01
February 27	29	6	0.00
February 28	28	2	0.00

March 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	34	4	0.00
March 2	36	6	0.00
March 3	38	11	0.00
March 4	45	12	0.00
March 5	39	16	0.00
March 6	50	18	0.00
March 7	45	26	0.00
March 8	50	23	0.08
March 9	39	27	0.00
March 10	41	24	0.00
March 11	41	18	0.00
March 12	44	18	0.00
March 13	50	19	0.00
March 14	55	28	0.00
March 15	50	29	0.00
March 16	52	29	0.00
March 17	53	26	0.00
March 18	59	29	0.00
March 19	60	31	0.09
March 20	41	29	0.67
March 21	41	19	0.00
March 22	35	29	0.13
March 23	46	25	0.00
March 24	41	23	0.00
March 25	38	30	0.03
March 26	45	27	0.00
March 27	51	27	0.00
March 28	64	31	0.00
March 29	55	23	0.00
March 30	41	18	0.00
March 31	48	22	0.00

April 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	63	24	0.00
April 2	69	27	0.00
April 3	71	31	0.00
April 4	72	33	0.00
April 5	54	33	0.19
April 6	45	30	0.13
April 7	58	27	0.00
April 8	53	29	0.00
April 9	50	22	0.00
April 10	60	24	0.00
April 11	45	28	0.00
April 12	48	24	0.00
April 13	52	27	0.00
April 14	43	29	0.03
April 15	47	31	0.10
April 16	53	31	0.00
April 17	59	24	0.00
April 18	64	28	0.00
April 19	47	27	0.00
April 20	49	19	0.00
April 21	57	22	0.00
April 22	61	20	0.00
April 23	59	32	0.00
April 24	59	40	0.00
April 25	49	40	0.22
April 26	51	38	0.03
April 27	58	34	0.00
April 28	65	33	0.00
April 29	72	36	0.00
April 30	83	36	0.00

May 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	74	45	0.00
May 2	64	43	0.00
May 3	63	41	0.00
May 4	59	43	0.03
May 5	65	31	0.00
May 6	80	33	0.00
May 7	74	43	0.00
May 8	53	33	0.00
May 9	56	25	0.00
May 10	56	29	0.00
May 11	60	26	0.00
May 12	68	31	0.00
May 13	73	44	0.00
May 14	74	39	0.00
May 15	66	41	0.00
May 16	77	40	0.00
May 17	78	41	0.00
May 18	78	47	0.00
May 19	75	43	0.00
May 20	61	39	0.02
May 21	53	39	0.42
May 22	62	34	0.05
May 23	57	41	0.54
May 24	62	43	0.00
May 25	67	39	0.19
May 26	64	44	0.11
May 27	74	37	0.00
May 28	70	47	0.00
May 29	70	34	0.00
May 30	76	36	0.00
May 31	80	36	0.00

June 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	82	40	0.00
June 2	88	44	0.00
June 3	92	48	0.00
June 4	93	50	0.00
June 5	86	63	0.00
June 6	77	51	0.00
June 7	80	48	0.00
June 8	83	50	0.00
June 9	86	47	0.00
June 10	71	44	0.00
June 11	72	33	0.00
June 12	83	37	0.00
June 13	95	45	0.00
June 14	95	47	0.00
June 15	91	45	0.00
June 16	85	55	0.00
June 17	88	54	0.00
June 18	90	45	0.00
June 19	92	47	0.00
June 20	82	47	0.00
June 21	86	47	0.00
June 22	94	47	0.00
June 23	87	56	0.00
June 24	80	52	0.16
June 25	81	49	0.00
June 26	83	54	0.00
June 27	87	50	0.00
June 28	88	52	0.00
June 29	89	51	0.00
June 30	88	52	0.00

July 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	91	54	0.00
July 2	91	53	0.00
July 3	94	52	0.00
July 4	94	55	0.00
July 5	86	58	0.01
July 6	93	52	0.00
July 7	99	54	0.00
July 8	93	52	0.00
July 9	91	50	0.00
July 10	89	46	0.00
July 11	95	49	0.00
July 12	95	51	0.00
July 13	91	52	0.00
July 14	89	51	0.00
July 15	95	50	0.00
July 16	94	51	0.00
July 17	94	49	0.00
July 18	99	50	0.00
July 19	92	53	0.00
July 20	91	62	0.00
July 21	93	54	0.02
July 22	92	58	0.00
July 23	90	53	0.00
July 24	90	46	0.00
July 25	93	48	0.00
July 26	94	50	0.00
July 27	92	53	0.00
July 28	85	64	0.07
July 29	90	57	0.00
July 30	88	57	0.00
July 31	79	63	1.28

August 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	87	64	0.01
August 2	82	60	0.25
August 3	85	53	0.00
August 4	91	54	0.00
August 5	92	56	0.00
August 6	69	50	0.08
August 7	83	46	0.00
August 8	86	49	0.00
August 9	77	47	0.00
August 10	83	42	0.00
August 11	88	47	0.00
August 12	94	50	0.00
August 13	96	55	0.00
August 14	92	51	0.00
August 15	91	51	0.00
August 16	91	49	0.00
August 17	92	52	0.00
August 18	67	52	0.80
August 19	55	49	0.44
August 20	71	47	0.05
August 21	72	45	0.22
August 22	n/a	n/a	0.00
August 23	81	n/a	0.00
August 24	80	50	0.00
August 25	87	46	0.00
August 26	80	45	0.00
August 27	80	50	0.00
August 28	77	44	0.00
August 29	85	37	0.00
August 30	87	42	0.00
August 31	82	45	0.00

September 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	77	44	0.00
September 2	79	40	0.00
September 3	75	43	0.00
September 4	81	35	0.00
September 5	87	38	0.00
September 6	89	41	0.00
September 7	86	42	0.00
September 8	92	42	0.00
September 9	95	44	0.00
September 10	92	51	0.03
September 11	78	57	0.00
September 12	81	44	0.00
September 13	81	49	0.00
September 14	77	45	0.00
September 15	83	41	0.00
September 16	76	48	0.00
September 17	80	33	0.00
September 18	81	43	0.00
September 19	59	42	0.38
September 20	60	39	0.00
September 21	68	33	0.00
September 22	77	34	0.00
September 23	74	42	0.00
September 24	75	37	0.00
September 25	82	38	0.00
September 26	83	39	0.00
September 27	82	37	0.00
September 28	60	39	0.00
September 29	61	28	0.00
September 30	66	26	0.00

October 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	71	29	0.00
October 2	72	30	0.00
October 3	75	30	0.00
October 4	80	33	0.00
October 5	82	37	0.00
October 6	72	45	0.00
October 7	60	50	0.04
October 8	59	44	0.16
October 9	47	44	0.13
October 10	57	33	0.00
October 11	51	31	0.47
October 12	37	31	0.01
October 13	44	32	0.00
October 14	44	32	0.02
October 15	53	26	0.00
October 16	59	27	0.00
October 17	69	30	0.00
October 18	64	35	0.16
October 19	57	35	0.00
October 20	60	35	0.00
October 21	67	35	0.00
October 22	71	33	0.00
October 23	53	42	0.00
October 24	54	40	0.10
October 25	56	42	0.42
October 26	51	38	0.27
October 27	56	38	0.00
October 28	60	32	0.00
October 29	64	34	0.00
October 30	58	39	0.00
October 31	59	35	0.00

November 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	50	31	0.00
November 2	51	35	0.13
November 3	54	29	0.00
November 4	62	31	0.07
November 5	58	36	0.00
November 6	54	31	0.03
November 7	47	34	0.00
November 8	43	19	0.00
November 9	44	24	0.09
November 10	44	31	0.00
November 11	39	27	0.00
November 12	45	33	0.00
November 13	53	36	0.00
November 14	58	44	0.00
November 15	63	35	0.00
November 16	54	23	0.00
November 17	36	18	0.00
November 18	37	19	0.00
November 19	43	32	0.12
November 20	38	34	0.00
November 21	41	27	0.00
November 22	47	22	0.00
November 23	49	16	0.00
November 24	37	27	0.00
November 25	41	17	0.00
November 26	44	22	0.00
November 27	46	21	0.00
November 28	53	25	0.00
November 29	55	23	0.00
November 30	41	26	0.00

December 2021 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	48	23	0.00
December 2	54	25	0.00
December 3	47	26	0.00
December 4	54	25	0.00
December 5	51	26	0.00
December 6	37	26	0.00
December 7	36	29	0.00
December 8	45	32	0.00
December 9	34	23	0.00
December 10	28	17	0.02
December 11	33	24	0.00
December 12	42	32	0.00
December 13	45	33	0.01
December 14	45	29	0.17
December 15	29	19	0.00
December 16	30	23	0.03
December 17	29	11	0.00
December 18	30	15	0.00
December 19	29	11	0.00
December 20	41	21	0.00
December 21	35	20	0.00
December 22	36	14	0.00
December 23	39	22	0.12
December 24	36	27	0.06
December 25	37	27	0.00
December 26	37	19	0.00
December 27	29	14	0.00
December 28	18	10	0.00
December 29	19	9	0.38
December 30	25	18	0.02
December 31	24	0	0.00

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Weather Station Details

Years	Station	Coordinates
1948–2023	Idaho Falls Fanning Field	location