Helena Weather in 1986

Historical record of Helena, Montana weather for the year 1986 based on NOAA data.

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1986 Helena Weather Extremes
Highest temperature	99 °F	July 2
Lowest temperature	-24 °F	November 10
Highest daily low	60 °F	August 11
Lowest daily high	5 °F	November 9
Most daily precipitation	1.1 inches	August 31
Most daily snow	7.2 inches	April 12
Total annual precipitation	12.1 inches	-
Total annual snow	45.4 inches	-

What was the hottest temperature in Helena in 1986?

The highest temperature recorded in Helena, Montana in 1986 was 99 °F which happened on July 2.

Highest Temperatures: All-Time By Year

Highest Temperatures in Helena in 1986

Rank	Temperature	Date
1	99 °F	Jul 2
2	97 °F	Jun 17
3	95 °F	Aug 18
4	94 °F	Jun 24
4	94 °F	Jun 18
6	93 °F	Aug 8
6	93 °F	Jun 16
8	92 °F	Aug 15
8	92 °F	May 30
10	91 °F	Aug 28
10	91 °F	Aug 7
10	91 °F	Jun 26
10	91 °F	Jun 2
10	91 °F	Jun 1
10	91 °F	May 29

What was the coldest temperature in Helena in 1986?

The lowest temperature recorded in Helena, Montana in 1986 was -24 °F which happened on Nov 10.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Helena in 1986

Rank	Temperature	Date
1	-24 °F	November 10
2	-19 °F	November 9
2	-19 °F	February 20
4	-14 °F	November 12
4	-14 °F	January 5
6	-11 °F	December 19
6	-11 °F	February 11
8	-10 °F	January 4
9	-7 °F	December 18
9	-7 °F	February 12
9	-7 °F	February 10

January 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	37	21	0.01	0.1
January 2	31	14	0.00	0.0
January 3	28	3	0.16	3.4
January 4	10	-10	0.00	0.0
January 5	15	-14	0.00	0.0
January 6	37	2	0.00	0.0
January 7	32	16	0.00	0.0
January 8	44	14	0.00	0.0
January 9	48	23	0.00	0.0
January 10	41	24	0.00	0.0
January 11	47	20	0.00	0.0
January 12	30	8	0.00	0.0
January 13	33	7	0.00	0.0
January 14	24	6	0.00	0.0
January 15	31	12	0.00	0.0
January 16	47	16	0.00	0.0
January 17	39	27	0.07	0.0
January 18	47	26	0.00	0.0
January 19	50	30	0.00	0.0
January 20	40	22	0.08	0.7
January 21	32	13	0.00	0.0
January 22	26	8	0.00	0.0
January 23	44	20	0.00	0.0
January 24	36	24	0.00	0.0
January 25	33	13	0.00	0.0
January 26	32	9	0.00	0.0
January 27	34	13	0.00	0.0
January 28	45	26	0.00	0.0
January 29	33	22	0.00	0.0
January 30	38	31	0.00	0.0
January 31	40	27	0.00	0.0

February 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	42	28	0.00	0.0
February 2	44	28	0.00	0.0
February 3	44	29	0.00	0.0
February 4	43	22	0.01	0.2
February 5	32	21	0.04	0.7
February 6	22	5	0.00	0.0
February 7	24	3	0.00	0.0
February 8	23	13	0.00	0.0
February 9	25	4	0.03	0.3
February 10	20	-7	0.02	0.5
February 11	12	-11	0.00	0.0
February 12	13	-7	0.11	2.4
February 13	16	3	0.02	0.3
February 14	18	3	0.18	2.4
February 15	18	2	0.30	3.1
February 16	51	3	0.16	0.2
February 17	18	-2	0.11	2.6
February 18	5	-4	0.15	2.8
February 19	14	-5	0.01	0.1
February 20	16	-19	0.00	0.0
February 21	37	0	0.00	0.0
February 22	42	18	0.00	0.0
February 23	52	33	0.04	0.0
February 24	60	37	0.00	0.0
February 25	59	34	0.00	0.0
February 26	53	31	0.02	0.0
February 27	51	24	0.00	0.0
February 28	56	24	0.00	0.0

March 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	58	26	0.00	0.0
March 2	59	38	0.00	0.0
March 3	59	26	0.00	0.0
March 4	62	29	0.00	0.0
March 5	58	35	0.00	0.0
March 6	53	31	0.00	0.0
March 7	66	33	0.02	0.0
March 8	46	34	0.08	0.0
March 9	50	31	0.02	0.0
March 10	46	25	0.00	0.0
March 11	51	34	0.13	0.0
March 12	50	33	0.08	0.0
March 13	45	30	0.00	0.0
March 14	47	24	0.00	0.0
March 15	48	24	0.00	0.0
March 16	44	23	0.09	0.5
March 17	38	30	0.07	0.7
March 18	47	27	0.00	0.0
March 19	54	37	0.00	0.0
March 20	60	27	0.00	0.0
March 21	68	27	0.00	0.0
March 22	52	31	0.00	0.0
March 23	58	24	0.00	0.0
March 24	53	30	0.00	0.0
March 25	49	30	0.00	0.0
March 26	62	24	0.00	0.0
March 27	75	30	0.00	0.0
March 28	73	33	0.00	0.0
March 29	71	45	0.00	0.0
March 30	70	29	0.00	0.0
March 31	54	29	0.00	0.0

April 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	60	21	0.00	0.0
April 2	46	32	0.00	0.0
April 3	53	22	0.00	0.0
April 4	61	22	0.00	0.0
April 5	67	28	0.00	0.0
April 6	69	33	0.00	0.0
April 7	68	28	0.00	0.0
April 8	69	31	0.00	0.0
April 9	68	32	0.00	0.0
April 10	64	32	0.00	0.0
April 11	53	28	0.02	0.0
April 12	31	14	0.51	7.2
April 13	28	12	0.10	1.4
April 14	46	10	0.00	0.0
April 15	59	25	0.00	0.0
April 16	54	37	0.03	0.0
April 17	55	27	0.00	0.0
April 18	52	34	0.00	0.0
April 19	55	35	0.00	0.0
April 20	64	48	0.00	0.0
April 21	71	49	0.00	0.0
April 22	75	48	0.03	0.0
April 23	52	38	0.00	0.0
April 24	51	32	0.05	0.5
April 25	50	34	0.06	0.0
April 26	49	32	0.24	1.9
April 27	58	33	0.00	0.0
April 28	55	34	0.00	0.0
April 29	49	31	0.04	0.6
April 30	57	27	0.00	0.0

May 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
May 1	67	29	0.00	0.0
May 2	76	41	0.00	0.0
May 3	73	40	0.00	0.0
May 4	53	42	0.06	0.0
May 5	56	37	0.00	0.0
May 6	55	28	0.00	0.0
May 7	48	38	0.05	0.0
May 8	43	36	0.08	0.0
May 9	55	38	0.06	0.0
May 10	45	37	0.37	0.0
May 11	47	35	0.07	0.2
May 12	57	34	0.00	0.0
May 13	69	36	0.03	0.0
May 14	50	31	0.00	0.0
May 15	56	34	0.00	0.0
May 16	61	28	0.00	0.0
May 17	65	31	0.00	0.0
May 18	70	38	0.00	0.0
May 19	81	48	0.01	0.0
May 20	82	47	0.07	0.0
May 21	76	42	0.03	0.0
May 22	53	37	0.00	0.0
May 23	63	34	0.00	0.0
May 24	75	35	0.00	0.0
May 25	83	41	0.00	0.0
May 26	86	46	0.00	0.0
May 27	90	50	0.00	0.0
May 28	90	53	0.00	0.0
May 29	91	52	0.00	0.0
May 30	92	55	0.00	0.0
May 31	86	55	0.00	0.0

June 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	91	55	0.00
June 2	91	56	0.00
June 3	71	51	0.07
June 4	82	45	0.54
June 5	73	54	0.09
June 6	76	55	0.00
June 7	72	53	0.00
June 8	63	53	0.12
June 9	70	49	0.00
June 10	79	44	0.00
June 11	87	49	0.00
June 12	80	51	0.00
June 13	81	48	0.00
June 14	84	50	0.19
June 15	79	49	0.00
June 16	93	49	0.00
June 17	97	54	0.00
June 18	94	52	0.00
June 19	74	49	0.00
June 20	74	47	0.00
June 21	73	49	0.00
June 22	83	47	0.00
June 23	89	51	0.00
June 24	94	55	0.00
June 25	88	57	0.04
June 26	91	50	0.00
June 27	89	56	0.00
June 28	81	58	0.51
June 29	75	47	0.00
June 30	78	46	0.00

July 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	87	50	0.00
July 2	99	55	0.00
July 3	76	60	0.00
July 4	62	43	0.74
July 5	64	46	0.00
July 6	73	39	0.00
July 7	79	47	0.00
July 8	80	49	0.04
July 9	78	50	0.00
July 10	75	56	0.00
July 11	72	55	0.01
July 12	75	47	0.00
July 13	79	46	0.00
July 14	81	48	0.00
July 15	83	48	0.01
July 16	66	50	0.20
July 17	74	43	0.00
July 18	74	44	0.00
July 19	82	45	0.04
July 20	81	49	0.00
July 21	86	50	0.00
July 22	87	57	0.00
July 23	86	52	0.00
July 24	86	50	0.00
July 25	83	51	0.00
July 26	78	48	0.33
July 27	80	48	0.00
July 28	87	46	0.00
July 29	81	51	0.00
July 30	78	55	0.00
July 31	83	43	0.00

August 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	84	51	0.00
August 2	89	50	0.00
August 3	90	55	0.01
August 4	89	53	0.00
August 5	89	51	0.00
August 6	83	53	0.00
August 7	91	51	0.00
August 8	93	54	0.00
August 9	78	57	0.00
August 10	88	49	0.00
August 11	89	60	0.01
August 12	72	55	0.19
August 13	79	54	0.05
August 14	87	50	0.00
August 15	92	50	0.00
August 16	80	51	0.00
August 17	90	54	0.00
August 18	95	53	0.00
August 19	87	53	0.00
August 20	83	49	0.00
August 21	63	49	0.45
August 22	79	43	0.00
August 23	80	50	0.01
August 24	86	48	0.00
August 25	82	57	0.00
August 26	84	50	0.00
August 27	88	50	0.00
August 28	91	52	0.00
August 29	85	56	0.00
August 30	78	50	0.06
August 31	62	52	1.06

September 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	73	52	0.27
September 2	74	55	0.00
September 3	77	53	0.00
September 4	82	49	0.00
September 5	50	44	0.00
September 6	55	43	0.00
September 7	72	37	0.00
September 8	69	52	0.26
September 9	65	50	0.05
September 10	67	48	0.00
September 11	69	44	0.00
September 12	51	37	0.24
September 13	50	36	0.36
September 14	50	41	0.00
September 15	56	43	0.09
September 16	61	39	0.00
September 17	60	44	0.77
September 18	48	41	0.23
September 19	51	40	0.04
September 20	50	40	0.07
September 21	59	36	0.01
September 22	62	32	0.00
September 23	72	33	0.00
September 24	56	39	0.02
September 25	55	41	0.00
September 26	60	35	0.00
September 27	57	29	0.00
September 28	53	33	0.00
September 29	56	42	0.00
September 30	57	43	0.04

October 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	51	41	0.00
October 2	42	33	0.00
October 3	54	27	0.00
October 4	62	44	0.02
October 5	69	38	0.00
October 6	73	39	0.00
October 7	73	37	0.00
October 8	61	39	0.00
October 9	69	31	0.00
October 10	47	30	0.01
October 11	47	24	0.00
October 12	54	20	0.00
October 13	64	24	0.00
October 14	62	29	0.00
October 15	64	23	0.00
October 16	64	27	0.00
October 17	64	27	0.00
October 18	66	31	0.00
October 19	65	26	0.00
October 20	64	29	0.00
October 21	68	26	0.00
October 22	62	28	0.00
October 23	60	26	0.00
October 24	64	27	0.00
October 25	69	30	0.00
October 26	63	32	0.00
October 27	58	39	0.00
October 28	58	34	0.00
October 29	52	28	0.00
October 30	55	38	0.00
October 31	38	19	0.00

November 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	50	14	0.00	0.0
November 2	59	20	0.00	0.0
November 3	59	36	0.00	0.0
November 4	57	36	0.00	0.0
November 5	56	32	0.12	0.6
November 6	38	26	0.01	0.2
November 7	32	12	0.00	0.2
November 8	13	4	0.07	1.4
November 9	5	-19	0.14	2.4
November 10	9	-24	0.00	0.0
November 11	23	3	0.05	1.0
November 12	11	-14	0.00	0.0
November 13	23	1	0.00	0.0
November 14	29	10	0.07	1.5
November 15	44	5	0.00	0.0
November 16	42	26	0.01	0.2
November 17	40	12	0.00	0.0
November 18	49	8	0.05	0.0
November 19	44	36	0.00	0.0
November 20	58	30	0.00	0.0
November 21	50	31	0.00	0.0
November 22	38	27	0.00	0.0
November 23	52	28	0.01	0.1
November 24	63	33	0.01	0.0
November 25	42	19	0.00	0.0
November 26	51	19	0.00	0.0
November 27	51	28	0.00	0.0
November 28	44	25	0.00	0.0
November 29	45	27	0.00	0.0
November 30	43	25	0.00	0.0

December 1986 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	53	22	0.00	0.0
December 2	35	24	0.00	0.0
December 3	35	15	0.00	0.0
December 4	31	11	0.00	0.0
December 5	31	21	0.35	4.3
December 6	25	7	0.01	0.1
December 7	24	4	0.00	0.0
December 8	29	9	0.01	0.2
December 9	20	2	0.00	0.0
December 10	33	5	0.00	0.0
December 11	23	0	0.00	0.0
December 12	28	5	0.00	0.0
December 13	32	9	0.00	0.0
December 14	38	14	0.01	0.4
December 15	30	7	0.00	0.0
December 16	24	-1	0.00	0.0
December 17	19	-2	0.00	0.0
December 18	15	-7	0.00	0.0
December 19	12	-11	0.00	0.0
December 20	19	-5	0.00	0.0
December 21	23	-3	0.00	0.0
December 22	33	9	0.00	0.0
December 23	46	15	0.00	0.0
December 24	34	20	0.00	0.0
December 25	41	19	0.00	0.0
December 26	36	11	0.00	0.0
December 27	31	9	0.00	0.0
December 28	29	3	0.00	0.0
December 29	25	3	0.00	0.0
December 30	40	11	0.00	0.0
December 31	32	1	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1939–2024	Helena Regional Airport	location
1893–1938	Helna	location