Idaho Falls Weather in 2018

Historical record of Idaho Falls, Idaho weather for the year 2018 based on NOAA data.

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2018 Idaho Falls Weather Extremes
Highest temperature	98 °F	August 11
Lowest temperature	-12 °F	December 31
Highest daily low	62 °F	July 21
Lowest daily high	16 °F	December 5
Most daily precipitation	0.7 inches	July 26
Total annual precipitation	10.4 inches	-

What was the hottest temperature in Idaho Falls in 2018?

The highest temperature recorded in Idaho Falls, Idaho in 2018 was 98 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Idaho Falls in 2018

Rank	Temperature	Date
1	98 °F	Aug 11
1	98 °F	Aug 10
3	96 °F	Jul 24
3	96 °F	Jul 9
5	95 °F	Aug 9
6	94 °F	Aug 2
6	94 °F	Jul 20
6	94 °F	Jul 8
9	93 °F	Aug 8
9	93 °F	Aug 1
9	93 °F	Jul 18
9	93 °F	Jul 5

What was the coldest temperature in Idaho Falls in 2018?

The lowest temperature recorded in Idaho Falls, Idaho in 2018 was -12 °F which happened on Dec 31.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Idaho Falls in 2018

Rank	Temperature	Date
1	-12 °F	December 31
2	-6 °F	December 28
3	-2 °F	December 5
4	0 °F	December 6
4	0 °F	December 4
6	2 °F	December 7
6	2 °F	January 2
8	4 °F	December 26
8	4 °F	December 14
8	4 °F	March 6

January 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	28	5	0.00
January 2	26	2	0.00
January 3	29	7	0.00
January 4	32	9	0.00
January 5	40	19	0.00
January 6	33	20	0.09
January 7	34	20	0.00
January 8	35	17	0.00
January 9	39	30	0.25
January 10	39	27	0.05
January 11	37	26	0.04
January 12	40	33	0.00
January 13	39	27	0.00
January 14	37	24	0.00
January 15	40	23	0.00
January 16	38	20	0.00
January 17	38	23	0.00
January 18	48	26	0.00
January 19	45	30	0.03
January 20	34	21	0.00
January 21	32	18	0.00
January 22	30	19	0.02
January 23	33	22	0.00
January 24	39	18	0.00
January 25	39	24	0.00
January 26	34	21	0.00
January 27	35	25	0.00
January 28	40	31	0.00
January 29	39	28	0.00
January 30	50	31	0.00
January 31	35	28	0.00

February 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	37	23	0.00
February 2	50	32	0.00
February 3	50	33	0.00
February 4	50	37	0.01
February 5	46	32	0.00
February 6	44	29	0.00
February 7	48	31	0.00
February 8	51	37	0.00
February 9	46	32	0.00
February 10	36	25	0.00
February 11	37	22	0.00
February 12	33	21	0.00
February 13	34	18	0.00
February 14	42	22	0.00
February 15	34	24	0.03
February 16	31	23	0.00
February 17	46	25	0.00
February 18	40	26	0.00
February 19	26	12	0.00
February 20	16	8	0.00
February 21	29	6	0.00
February 22	32	9	0.00
February 23	24	10	0.00
February 24	25	14	0.00
February 25	27	16	0.00
February 26	32	22	0.01
February 27	24	8	0.00
February 28	29	15	0.00

March 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	38	18	0.02
March 2	40	27	0.09
March 3	34	24	0.11
March 4	30	16	0.04
March 5	31	10	0.00
March 6	33	4	0.00
March 7	36	6	0.00
March 8	42	13	0.00
March 9	45	26	0.00
March 10	45	26	0.00
March 11	46	25	0.00
March 12	49	26	0.00
March 13	58	25	0.00
March 14	54	32	0.25
March 15	43	32	0.00
March 16	45	29	0.00
March 17	40	29	0.00
March 18	38	24	0.00
March 19	44	29	0.00
March 20	40	29	0.02
March 21	50	30	0.00
March 22	50	34	0.65
March 23	52	33	0.00
March 24	46	32	0.14
March 25	41	30	0.00
March 26	43	24	0.00
March 27	49	25	0.00
March 28	54	30	0.00
March 29	49	25	0.00
March 30	61	35	0.00
March 31	55	40	0.03

April 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	53	38	0.10
April 2	47	22	0.00
April 3	45	17	0.00
April 4	57	n/a	0.00
April 5	57	39	0.00
April 6	55	43	0.12
April 7	57	38	0.40
April 8	52	36	0.00
April 9	53	29	0.00
April 10	61	29	0.00
April 11	58	44	0.04
April 12	50	32	0.44
April 13	49	30	0.00
April 14	50	30	0.00
April 15	64	33	0.00
April 16	56	33	0.00
April 17	49	29	0.02
April 18	51	25	0.00
April 19	63	34	0.00
April 20	67	39	0.00
April 21	68	31	0.00
April 22	71	39	0.00
April 23	50	35	0.26
April 24	59	31	0.00
April 25	66	29	0.00
April 26	71	33	0.00
April 27	78	33	0.00
April 28	71	46	0.00
April 29	56	43	0.00
April 30	45	37	0.31

May 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	52	34	0.04
May 2	62	32	0.00
May 3	65	31	0.00
May 4	71	34	0.00
May 5	75	38	0.00
May 6	83	48	0.00
May 7	75	44	0.00
May 8	74	36	0.00
May 9	77	42	0.00
May 10	72	41	0.01
May 11	52	41	0.11
May 12	63	40	0.56
May 13	63	34	0.00
May 14	70	37	0.00
May 15	71	39	0.03
May 16	71	42	0.02
May 17	69	41	0.00
May 18	71	40	0.00
May 19	68	44	0.00
May 20	75	40	0.20
May 21	74	44	0.00
May 22	74	44	0.00
May 23	64	51	0.21
May 24	75	42	0.00
May 25	84	44	0.00
May 26	77	48	0.07
May 27	72	48	0.02
May 28	73	44	0.68
May 29	74	47	0.00
May 30	70	44	0.07
May 31	69	47	0.11

June 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	63	42	0.00
June 2	72	33	0.00
June 3	80	40	0.00
June 4	85	44	0.00
June 5	79	48	0.00
June 6	85	41	0.00
June 7	85	50	0.00
June 8	83	44	0.00
June 9	87	46	0.00
June 10	60	43	0.00
June 11	68	42	0.00
June 12	74	35	0.00
June 13	90	37	0.00
June 14	77	52	0.00
June 15	66	48	0.40
June 16	71	50	0.57
June 17	74	50	0.49
June 18	64	49	0.19
June 19	66	44	0.11
June 20	75	47	0.00
June 21	80	48	0.00
June 22	79	50	0.00
June 23	68	48	0.12
June 24	74	43	0.00
June 25	86	44	0.00
June 26	81	58	0.00
June 27	87	50	0.00
June 28	83	51	0.00
June 29	69	51	0.03
June 30	72	45	0.06

July 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	80	48	0.00
July 2	81	54	0.00
July 3	72	44	0.00
July 4	85	36	0.00
July 5	93	47	0.00
July 6	91	52	0.00
July 7	89	50	0.00
July 8	94	54	0.00
July 9	96	56	0.00
July 10	91	60	0.00
July 11	87	55	0.00
July 12	87	56	0.00
July 13	90	48	0.00
July 14	89	47	0.00
July 15	91	49	0.00
July 16	91	54	0.00
July 17	90	53	0.00
July 18	93	49	0.00
July 19	91	49	0.00
July 20	94	47	0.00
July 21	92	62	0.00
July 22	88	52	0.00
July 23	90	51	0.00
July 24	96	50	0.00
July 25	90	53	0.11
July 26	89	50	0.70
July 27	90	47	0.00
July 28	91	51	0.00
July 29	88	49	0.00
July 30	89	50	0.00
July 31	91	48	0.00

August 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	93	57	0.02
August 2	94	51	0.00
August 3	86	53	0.00
August 4	84	45	0.00
August 5	81	51	0.00
August 6	83	47	0.00
August 7	87	45	0.00
August 8	93	47	0.00
August 9	95	48	0.00
August 10	98	49	0.00
August 11	98	48	0.00
August 12	88	50	0.00
August 13	90	48	0.00
August 14	88	50	0.00
August 15	89	44	0.00
August 16	86	43	0.00
August 17	90	47	0.00
August 18	82	46	0.00
August 19	85	47	0.00
August 20	82	45	0.00
August 21	78	40	0.00
August 22	77	48	0.00
August 23	84	42	0.00
August 24	84	44	0.00
August 25	82	47	0.00
August 26	75	57	0.00
August 27	67	43	0.24
August 28	68	35	0.00
August 29	81	35	0.00
August 30	87	43	0.00
August 31	80	42	0.00

September 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)
September 1	77	45
September 2	79	37
September 3	82	36
September 4	82	40
September 5	88	40
September 6	89	43
September 7	88	51
September 8	86	53
September 9	81	47
September 10	83	39
September 11	80	41
September 12	74	52
September 13	73	51
September 14	77	44
September 15	86	41
September 16	79	40
September 17	79	32
September 18	78	33
September 19	76	33
September 20	67	41
September 21	76	33
September 22	81	37
September 23	65	46
September 24	62	36
September 25	63	29
September 26	67	27
September 27	74	34
September 28	78	34
September 29	78	37
September 30	68	42

October 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	69	31	0.00
October 2	78	43	0.00
October 3	68	56	0.00
October 4	61	43	0.13
October 5	53	40	0.02
October 6	48	39	0.04
October 7	59	32	0.00
October 8	59	26	0.00
October 9	44	36	0.47
October 10	44	36	0.04
October 11	51	37	0.00
October 12	53	30	0.00
October 13	48	27	0.00
October 14	42	22	0.00
October 15	48	19	0.00
October 16	59	23	0.00
October 17	64	27	0.00
October 18	63	26	0.00
October 19	63	26	0.00
October 20	68	28	0.00
October 21	69	29	0.00
October 22	67	27	0.00
October 23	54	34	0.08
October 24	60	40	0.00
October 25	53	40	0.00
October 26	65	36	0.00
October 27	65	44	0.00
October 28	70	33	0.00
October 29	55	36	0.01
October 30	47	20	0.00
October 31	43	24	0.00

November 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	50	35	0.00
November 2	60	37	0.01
November 3	48	31	0.00
November 4	50	32	0.01
November 5	48	28	0.00
November 6	46	26	0.00
November 7	40	22	0.00
November 8	39	16	0.00
November 9	40	11	0.00
November 10	42	19	0.00
November 11	36	12	0.00
November 12	37	8	0.00
November 13	41	11	0.00
November 14	47	14	0.00
November 15	47	15	0.00
November 16	49	16	0.07
November 17	38	16	0.01
November 18	32	11	0.00
November 19	40	12	0.00
November 20	45	14	0.00
November 21	46	12	0.00
November 22	38	20	0.13
November 23	39	32	0.04
November 24	38	28	0.00
November 25	34	18	0.00
November 26	36	14	0.00
November 27	39	24	0.09
November 28	36	31	0.00
November 29	38	30	0.07
November 30	34	30	0.12

December 2018 Idaho Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	32	21	0.00
December 2	27	12	0.02
December 3	27	22	0.01
December 4	24	0	0.00
December 5	16	-2	0.00
December 6	20	0	0.00
December 7	27	2	0.00
December 8	28	17	0.00
December 9	30	7	0.00
December 10	27	8	0.08
December 11	28	23	0.00
December 12	31	17	0.06
December 13	22	6	0.00
December 14	24	4	0.00
December 15	37	10	0.00
December 16	32	5	0.00
December 17	38	13	0.00
December 18	39	28	0.00
December 19	37	29	0.00
December 20	32	17	0.00
December 21	37	19	0.00
December 22	27	11	0.00
December 23	27	14	0.00
December 24	29	23	0.08
December 25	31	14	0.02
December 26	24	4	0.00
December 27	21	12	0.03
December 28	18	-6	0.00
December 29	24	17	0.03
December 30	31	18	0.03
December 31	18	-12	0.00

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Weather Station Details

Years	Station	Coordinates
1948–2024	Idaho Falls Fanning Field	location