Helena Weather in 1999

Historical record of Helena, Montana weather for the year 1999 based on NOAA data.

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1999 Helena Weather Extremes
Highest temperature	100 °F	July 28
Lowest temperature	-10 °F	January 25
Highest daily low	60 °F	August 28
Lowest daily high	12 °F	January 24
Most daily precipitation	0.9 inches	August 11
Most daily snow	0.5 inches	December 8
Total annual precipitation	9.5 inches	-

What was the hottest temperature in Helena in 1999?

The highest temperature recorded in Helena, Montana in 1999 was 100 °F which happened on July 28.

Highest Temperatures: All-Time By Year

Highest Temperatures in Helena in 1999

Rank	Temperature	Date
1	100 °F	Jul 28
2	97 °F	Jul 27
3	96 °F	Aug 30
4	95 °F	Jul 29
5	94 °F	Jul 23
6	93 °F	Aug 10
6	93 °F	Jul 12
8	92 °F	Aug 27
8	92 °F	Aug 23
8	92 °F	Aug 18
8	92 °F	Aug 7
8	92 °F	Aug 3
8	92 °F	Jul 13
8	92 °F	Jul 7

What was the coldest temperature in Helena in 1999?

The lowest temperature recorded in Helena, Montana in 1999 was -10 °F which happened on Jan 25.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Helena in 1999

Rank	Temperature	Date
1	-10 °F	January 25
2	-9 °F	January 24
3	-2 °F	January 28
4	1 °F	January 23
5	5 °F	December 28
5	5 °F	January 27
7	6 °F	February 12
7	6 °F	January 31
9	7 °F	December 29
10	8 °F	December 27
10	8 °F	January 30
10	8 °F	January 26
10	8 °F	January 3

January 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	41	11	0.04	n/a
January 2	24	10	0.00	n/a
January 3	31	8	0.00	n/a
January 4	41	21	0.00	n/a
January 5	47	28	0.00	n/a
January 6	27	12	0.00	n/a
January 7	38	14	0.01	n/a
January 8	37	12	0.00	n/a
January 9	41	35	0.00	n/a
January 10	51	29	0.01	n/a
January 11	54	40	0.00	n/a
January 12	45	29	0.00	n/a
January 13	44	28	0.00	n/a
January 14	55	24	0.00	n/a
January 15	50	25	0.02	n/a
January 16	38	22	0.02	n/a
January 17	39	24	0.00	n/a
January 18	45	23	0.03	n/a
January 19	39	20	0.00	n/a
January 20	41	20	0.00	n/a
January 21	40	19	0.00	n/a
January 22	41	21	0.02	n/a
January 23	30	1	0.12	n/a
January 24	12	-9	0.00	n/a
January 25	18	-10	0.00	n/a
January 26	19	8	0.11	n/a
January 27	30	5	0.00	n/a
January 28	40	-2	0.00	n/a
January 29	39	17	0.00	n/a
January 30	32	8	0.00	n/a
January 31	35	6	0.00	n/a

February 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	35	24	0.00	n/a
February 2	44	29	0.01	n/a
February 3	38	25	0.00	n/a
February 4	40	21	0.00	n/a
February 5	41	18	0.00	n/a
February 6	46	34	0.00	n/a
February 7	47	27	0.01	n/a
February 8	40	28	0.00	n/a
February 9	37	25	0.08	n/a
February 10	30	20	0.00	n/a
February 11	32	10	0.00	n/a
February 12	36	6	0.00	n/a
February 13	47	14	0.00	n/a
February 14	40	23	0.05	n/a
February 15	36	15	0.00	n/a
February 16	40	15	0.00	n/a
February 17	41	20	0.00	n/a
February 18	40	21	0.00	n/a
February 19	43	24	0.00	n/a
February 20	42	24	0.00	n/a
February 21	34	24	0.00	n/a
February 22	42	31	0.00	n/a
February 23	45	30	0.05	n/a
February 24	58	27	0.00	n/a
February 25	53	30	0.00	n/a
February 26	41	26	0.00	n/a
February 27	48	17	0.00	n/a
February 28	56	31	0.06	n/a

March 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	44	30	0.02	n/a
March 2	45	27	0.00	n/a
March 3	45	28	0.00	n/a
March 4	39	16	0.00	n/a
March 5	40	19	0.00	n/a
March 6	31	11	0.00	n/a
March 7	34	16	0.00	n/a
March 8	47	17	0.00	n/a
March 9	46	26	0.00	n/a
March 10	46	25	0.00	0.0
March 11	47	20	0.00	n/a
March 12	49	17	0.00	n/a
March 13	61	24	0.00	n/a
March 14	67	25	0.00	n/a
March 15	62	29	0.00	n/a
March 16	47	27	0.00	n/a
March 17	51	16	0.00	n/a
March 18	63	18	0.00	n/a
March 19	68	23	0.00	n/a
March 20	67	25	0.00	n/a
March 21	64	25	0.00	n/a
March 22	57	32	0.00	n/a
March 23	62	24	0.00	n/a
March 24	69	23	0.00	n/a
March 25	74	27	0.00	n/a
March 26	51	25	0.00	n/a
March 27	41	17	0.00	n/a
March 28	43	18	0.00	n/a
March 29	57	19	0.00	n/a
March 30	46	27	0.00	n/a
March 31	38	20	0.00	n/a

April 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	33	20	0.00	n/a
April 2	41	14	0.00	n/a
April 3	48	19	0.00	n/a
April 4	47	27	0.05	n/a
April 5	46	23	0.00	n/a
April 6	54	20	0.00	n/a
April 7	63	22	0.00	n/a
April 8	63	23	0.00	n/a
April 9	41	32	0.05	n/a
April 10	45	22	0.00	n/a
April 11	54	15	0.00	n/a
April 12	66	20	0.00	n/a
April 13	59	36	0.00	n/a
April 14	42	19	0.02	n/a
April 15	52	12	0.00	n/a
April 16	63	16	0.00	n/a
April 17	72	24	0.00	n/a
April 18	74	37	0.00	n/a
April 19	64	48	0.00	n/a
April 20	58	39	0.00	n/a
April 21	51	28	0.00	n/a
April 22	45	28	0.01	n/a
April 23	59	30	0.00	n/a
April 24	67	24	0.00	n/a
April 25	73	35	0.00	n/a
April 26	67	45	0.00	n/a
April 27	56	40	0.51	n/a
April 28	41	33	0.21	n/a
April 29	34	30	0.20	n/a
April 30	56	31	0.00	n/a

May 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
May 1	60	37	0.00	n/a
May 2	53	42	0.00	n/a
May 3	52	35	0.67	n/a
May 4	52	33	0.00	n/a
May 5	52	34	0.00	n/a
May 6	66	27	0.00	n/a
May 7	63	33	0.00	n/a
May 8	56	29	0.00	n/a
May 9	40	32	0.23	n/a
May 10	44	30	0.00	n/a
May 11	57	29	0.00	n/a
May 12	59	38	0.00	n/a
May 13	57	30	0.00	n/a
May 14	55	40	0.00	n/a
May 15	54	39	0.03	n/a
May 16	59	41	0.00	n/a
May 17	64	36	0.00	n/a
May 18	65	41	0.02	n/a
May 19	69	40	0.00	n/a
May 20	74	36	0.07	n/a
May 21	71	47	0.01	n/a
May 22	71	43	0.00	n/a
May 23	82	38	0.00	n/a
May 24	86	43	0.00	n/a
May 25	86	44	0.00	n/a
May 26	74	46	0.00	n/a
May 27	84	37	0.00	n/a
May 28	81	43	0.12	n/a
May 29	56	42	0.29	n/a
May 30	50	37	0.75	n/a
May 31	65	34	0.00	n/a

June 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
June 1	67	47	0.07	n/a
June 2	65	49	0.36	n/a
June 3	60	50	0.56	n/a
June 4	68	49	0.04	n/a
June 5	68	43	0.00	n/a
June 6	59	42	0.08	n/a
June 7	58	40	0.12	n/a
June 8	57	40	0.04	n/a
June 9	60	33	0.00	n/a
June 10	67	30	0.00	n/a
June 11	72	39	0.00	n/a
June 12	76	38	0.00	n/a
June 13	79	43	0.00	n/a
June 14	72	52	0.10	n/a
June 15	78	45	0.00	n/a
June 16	81	47	0.00	n/a
June 17	81	55	0.30	n/a
June 18	84	50	0.10	n/a
June 19	81	50	0.00	n/a
June 20	84	45	0.00	n/a
June 21	77	54	0.01	n/a
June 22	71	55	0.00	n/a
June 23	75	53	0.00	n/a
June 24	86	49	0.03	n/a
June 25	68	47	0.18	n/a
June 26	70	37	0.00	n/a
June 27	70	49	0.11	n/a
June 28	76	42	0.00	n/a
June 29	69	54	0.01	n/a
June 30	68	54	0.04	n/a

July 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
July 1	68	44	0.15	n/a
July 2	69	40	0.00	n/a
July 3	68	48	0.00	n/a
July 4	66	44	0.00	n/a
July 5	76	42	0.00	n/a
July 6	87	41	0.00	n/a
July 7	92	53	0.04	n/a
July 8	76	50	0.00	n/a
July 9	79	41	0.00	n/a
July 10	91	44	0.00	n/a
July 11	91	48	0.00	n/a
July 12	93	51	0.00	n/a
July 13	92	50	0.00	n/a
July 14	91	50	0.00	n/a
July 15	63	47	0.00	n/a
July 16	67	39	0.00	n/a
July 17	76	41	0.07	n/a
July 18	83	46	0.00	n/a
July 19	89	46	0.00	n/a
July 20	89	49	0.07	n/a
July 21	87	47	0.02	n/a
July 22	89	46	0.00	n/a
July 23	94	48	0.00	n/a
July 24	87	50	0.06	n/a
July 25	83	47	0.00	n/a
July 26	90	43	0.00	n/a
July 27	97	47	0.00	n/a
July 28	100	52	0.00	n/a
July 29	95	57	0.00	n/a
July 30	86	53	0.00	n/a
July 31	77	51	0.00	n/a

August 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
August 1	82	48	0.00	n/a
August 2	89	50	0.03	n/a
August 3	92	52	0.01	n/a
August 4	83	60	0.12	n/a
August 5	84	54	0.00	n/a
August 6	81	56	0.00	n/a
August 7	92	52	0.00	n/a
August 8	85	55	0.00	n/a
August 9	89	51	0.00	n/a
August 10	93	52	0.00	n/a
August 11	77	57	0.90	n/a
August 12	74	55	0.09	n/a
August 13	77	50	0.00	n/a
August 14	74	48	0.09	n/a
August 15	70	52	0.02	n/a
August 16	82	50	0.00	n/a
August 17	86	51	0.00	n/a
August 18	92	48	0.00	n/a
August 19	87	57	0.05	n/a
August 20	87	50	0.00	n/a
August 21	88	52	0.00	n/a
August 22	86	50	0.00	n/a
August 23	92	46	0.00	n/a
August 24	88	55	0.18	n/a
August 25	88	49	0.00	n/a
August 26	91	52	0.00	n/a
August 27	92	53	0.00	n/a
August 28	75	60	0.17	n/a
August 29	85	58	0.00	n/a
August 30	96	52	0.00	n/a
August 31	66	41	0.26	n/a

September 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
September 1	63	40	0.00	n/a
September 2	52	44	0.29	n/a
September 3	55	46	0.11	n/a
September 4	69	36	0.00	n/a
September 5	79	43	0.00	n/a
September 6	71	47	0.00	n/a
September 7	68	42	0.00	n/a
September 8	71	33	0.00	n/a
September 9	82	35	0.00	n/a
September 10	75	47	0.00	n/a
September 11	57	35	0.00	n/a
September 12	65	28	0.00	n/a
September 13	73	30	0.00	n/a
September 14	77	36	0.00	n/a
September 15	81	36	0.00	n/a
September 16	84	38	0.00	n/a
September 17	83	39	0.00	n/a
September 18	63	40	0.07	n/a
September 19	66	34	0.00	n/a
September 20	75	31	0.00	n/a
September 21	82	33	0.00	n/a
September 22	84	37	0.00	n/a
September 23	84	37	0.00	n/a
September 24	67	44	0.00	n/a
September 25	60	41	0.00	n/a
September 26	51	35	0.00	n/a
September 27	45	28	0.07	n/a
September 28	56	23	0.00	n/a
September 29	73	31	0.00	n/a
September 30	57	38	0.00	n/a

October 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	53	27	0.00
October 2	37	21	0.00
October 3	64	18	0.00
October 4	75	26	0.00
October 5	73	27	0.00
October 6	66	38	0.00
October 7	60	46	0.00
October 8	73	50	0.00
October 9	58	39	0.00
October 10	58	27	0.00
October 11	64	30	0.00
October 12	60	37	0.00
October 13	75	33	0.00
October 14	61	36	0.00
October 15	42	31	0.02
October 16	45	18	0.02
October 17	50	31	0.00
October 18	50	25	0.00
October 19	59	21	0.00
October 20	69	24	0.00
October 21	71	31	0.00
October 22	66	26	0.00
October 23	62	23	0.00
October 24	63	26	0.00
October 25	65	30	0.00
October 26	64	41	0.00
October 27	51	37	0.30
October 28	54	38	0.04
October 29	49	38	0.01
October 30	69	37	0.00
October 31	65	31	0.00

November 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	43	20	0.00	n/a
November 2	51	17	0.00	n/a
November 3	59	30	0.00	n/a
November 4	61	25	0.01	n/a
November 5	43	22	0.00	n/a
November 6	68	30	0.00	n/a
November 7	52	34	0.00	n/a
November 8	58	30	0.00	n/a
November 9	57	30	0.00	n/a
November 10	62	31	0.00	n/a
November 11	61	30	0.00	n/a
November 12	75	39	0.00	n/a
November 13	71	41	0.00	n/a
November 14	62	27	0.00	n/a
November 15	51	18	0.00	n/a
November 16	55	27	0.00	n/a
November 17	52	26	0.00	n/a
November 18	46	24	0.00	n/a
November 19	46	19	0.00	n/a
November 20	50	34	0.02	n/a
November 21	41	22	0.00	n/a
November 22	37	20	0.00	n/a
November 23	39	14	0.00	n/a
November 24	44	22	0.00	n/a
November 25	48	35	0.07	n/a
November 26	50	33	0.03	n/a
November 27	40	20	0.00	n/a
November 28	42	21	0.00	n/a
November 29	38	18	0.00	n/a
November 30	63	26	0.00	n/a

December 1999 Helena Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	46	28	0.00	0.0
December 2	42	24	0.00	0.0
December 3	37	20	0.00	0.0
December 4	36	10	0.00	0.0
December 5	41	11	0.00	0.0
December 6	47	20	0.00	0.0
December 7	39	26	0.01	0.0
December 8	33	11	0.02	0.5
December 9	37	11	0.00	0.0
December 10	38	21	0.00	0.0
December 11	40	27	0.00	0.0
December 12	51	34	0.00	0.0
December 13	44	24	0.01	n/a
December 14	34	19	0.00	0.0
December 15	46	25	0.01	0.0
December 16	48	36	0.00	0.0
December 17	46	29	0.00	0.0
December 18	45	24	0.02	n/a
December 19	24	17	0.00	0.0
December 20	40	19	0.01	n/a
December 21	37	33	0.02	n/a
December 22	41	19	0.00	0.0
December 23	29	14	0.00	0.0
December 24	26	11	0.00	0.0
December 25	25	10	0.00	0.0
December 26	22	10	0.00	0.0
December 27	23	8	0.00	0.0
December 28	24	5	0.00	0.0
December 29	44	7	0.00	0.0
December 30	30	15	0.00	0.0
December 31	37	19	0.00	0.0

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Weather Station Details

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