Dillon Weather in 1999

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

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1999 Dillon Weather Extremes
Highest temperature	92 °F	July 28
Lowest temperature	-5 °F	January 23
Highest daily low	57 °F	July 29
Lowest daily high	12 °F	January 24
Most daily precipitation	0.8 inches	May 30
Total annual precipitation	7.7 inches	-

What was the hottest temperature in Dillon in 1999?

The highest temperature recorded in Dillon, Montana in 1999 was 92 °F which happened 2 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Dillon in 1999

Rank	Temperature	Date
1	92 °F	Jul 28
1	92 °F	Jul 27
3	90 °F	Aug 26
3	90 °F	Aug 23
3	90 °F	Aug 18
3	90 °F	Jul 24
3	90 °F	Jul 23
3	90 °F	Jul 13
9	89 °F	Jul 7
10	88 °F	Aug 10
10	88 °F	Jul 29
10	88 °F	Jul 12
10	88 °F	Jul 6

What was the coldest temperature in Dillon in 1999?

The lowest temperature recorded in Dillon, Montana in 1999 was -5 °F which happened on Jan 23.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Dillon in 1999

Rank	Temperature	Date
1	-5 °F	January 23
2	-1 °F	January 25
3	0 °F	January 24
4	4 °F	December 4
5	7 °F	January 3
6	8 °F	December 13
6	8 °F	December 9
6	8 °F	February 12
6	8 °F	January 29
6	8 °F	January 28
6	8 °F	January 27
6	8 °F	January 26

January 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
January 1	35	14	0.00
January 2	28	14	0.00
January 3	26	7	0.00
January 4	38	11	0.00
January 5	42	36	0.00
January 6	42	33	0.00
January 7	37	27	0.00
January 8	36	23	0.00
January 9	39	30	0.00
January 10	45	30	0.00
January 11	49	31	0.00
January 12	42	28	0.00
January 13	40	25	0.00
January 14	45	28	0.00
January 15	41	23	0.00
January 16	38	20	0.00
January 17	34	20	0.01
January 18	38	21	0.07
January 19	37	22	0.00
January 20	38	19	0.00
January 21	32	20	0.15
January 22	30	17	0.00
January 23	26	-5	0.02
January 24	12	0	0.00
January 25	18	-1	0.00
January 26	24	8	0.06
January 27	23	8	0.01
January 28	29	8	0.00
January 29	34	8	0.00
January 30	33	10	0.00
January 31	35	12	0.00

February 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
February 1	28	19	0.00
February 2	35	18	0.00
February 3	34	21	0.00
February 4	40	17	0.00
February 5	34	12	0.00
February 6	40	22	0.00
February 7	41	27	0.00
February 8	33	16	0.00
February 9	46	24	0.08
February 10	28	13	0.01
February 11	26	11	0.00
February 12	34	8	0.00
February 13	47	22	0.00
February 14	37	26	0.00
February 15	34	15	0.03
February 16	39	21	0.00
February 17	38	23	0.00
February 18	34	14	0.00
February 19	40	19	0.00
February 20	37	12	0.00
February 21	34	22	0.00
February 22	36	17	0.06
February 23	44	25	0.00
February 24	51	31	0.00
February 25	49	28	0.00
February 26	38	22	0.00
February 27	45	18	0.00
February 28	54	28	0.00

March 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
March 1	41	21	0.04
March 2	40	15	0.00
March 3	42	18	0.01
March 4	35	15	0.00
March 5	34	12	0.00
March 6	35	9	0.00
March 7	33	20	0.08
March 8	39	13	0.00
March 9	40	21	0.00
March 10	40	21	0.03
March 11	40	19	0.00
March 12	46	17	0.00
March 13	53	28	0.00
March 14	59	26	0.00
March 15	59	29	0.00
March 16	45	19	0.00
March 17	48	11	0.00
March 18	59	21	0.00
March 19	64	26	0.00
March 20	63	27	0.00
March 21	54	31	0.00
March 22	49	27	0.00
March 23	57	22	0.00
March 24	61	29	0.00
March 25	66	30	0.00
March 26	51	19	0.01
March 27	37	15	0.00
March 28	42	11	0.00
March 29	56	24	0.00
March 30	47	21	0.00
March 31	41	14	0.00

April 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
April 1	31	20	0.00
April 2	37	17	0.00
April 3	42	19	0.00
April 4	41	20	0.02
April 5	44	16	0.01
April 6	53	23	0.00
April 7	58	24	0.00
April 8	52	30	0.06
April 9	33	25	0.37
April 10	38	16	0.00
April 11	47	20	0.00
April 12	59	26	0.00
April 13	57	29	0.00
April 14	45	21	0.00
April 15	47	17	0.00
April 16	58	18	0.00
April 17	70	27	0.00
April 18	71	41	0.00
April 19	64	43	0.00
April 20	57	33	0.01
April 21	45	26	0.01
April 22	40	29	0.07
April 23	52	31	0.00
April 24	60	23	0.00
April 25	67	34	0.00
April 26	61	33	0.00
April 27	57	29	0.01
April 28	41	31	0.23
April 29	36	28	0.02
April 30	54	30	0.00

May 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	53	41	0.01
May 2	53	36	0.42
May 3	51	34	0.01
May 4	46	29	0.06
May 5	47	24	0.00
May 6	64	23	0.00
May 7	67	35	0.00
May 8	51	25	0.09
May 9	32	29	0.35
May 10	43	27	0.00
May 11	55	25	0.01
May 12	56	38	0.04
May 13	45	33	0.07
May 14	49	32	0.06
May 15	48	32	0.09
May 16	53	31	0.00
May 17	62	34	0.00
May 18	68	40	0.06
May 19	69	35	0.00
May 20	71	38	0.01
May 21	72	46	0.00
May 22	68	40	0.00
May 23	78	37	0.00
May 24	80	40	0.00
May 25	82	47	0.00
May 26	75	50	0.00
May 27	80	41	0.00
May 28	82	46	0.22
May 29	60	44	0.63
May 30	46	33	0.81
May 31	61	39	0.00

June 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	58	46	0.31
June 2	62	45	0.06
June 3	59	42	0.20
June 4	63	38	0.00
June 5	66	43	0.00
June 6	55	39	0.27
June 7	55	39	0.03
June 8	54	35	0.18
June 9	57	30	0.00
June 10	65	31	0.00
June 11	69	34	0.00
June 12	72	41	0.00
June 13	77	41	0.02
June 14	75	49	0.00
June 15	72	44	0.00
June 16	76	45	0.16
June 17	73	51	0.05
June 18	80	49	0.01
June 19	81	47	0.00
June 20	83	45	0.00
June 21	74	51	0.38
June 22	69	50	0.00
June 23	75	43	0.00
June 24	77	47	0.01
June 25	68	42	0.00
June 26	68	35	0.00
June 27	63	38	0.01
June 28	73	37	0.00
June 29	70	51	0.05
June 30	70	46	0.00

July 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	74	40	0.00
July 2	68	37	0.00
July 3	67	44	0.00
July 4	73	41	0.00
July 5	74	37	0.00
July 6	88	39	0.00
July 7	89	50	0.00
July 8	74	44	0.00
July 9	79	40	0.00
July 10	86	43	0.00
July 11	87	46	0.00
July 12	88	47	0.00
July 13	90	49	0.00
July 14	84	53	0.00
July 15	76	42	0.00
July 16	69	34	0.00
July 17	83	45	0.00
July 18	82	48	0.00
July 19	81	47	0.01
July 20	84	46	0.00
July 21	87	46	0.00
July 22	85	44	0.00
July 23	90	47	0.00
July 24	90	53	0.00
July 25	78	48	0.00
July 26	86	42	0.00
July 27	92	45	0.00
July 28	92	55	0.00
July 29	88	57	0.00
July 30	82	54	0.00
July 31	82	47	0.00

August 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	81	44	0.00
August 2	83	48	0.01
August 3	79	52	0.21
August 4	73	53	0.02
August 5	75	47	0.07
August 6	79	51	0.00
August 7	85	47	0.00
August 8	84	45	0.00
August 9	85	44	0.00
August 10	88	48	0.00
August 11	70	51	0.11
August 12	72	50	0.23
August 13	67	46	0.04
August 14	81	43	0.01
August 15	70	46	0.00
August 16	79	39	0.00
August 17	86	43	0.00
August 18	90	45	0.00
August 19	85	52	0.03
August 20	81	49	0.02
August 21	85	55	0.00
August 22	86	47	0.00
August 23	90	48	0.02
August 24	85	54	0.00
August 25	85	50	0.00
August 26	90	49	0.00
August 27	87	53	0.01
August 28	71	55	0.30
August 29	82	54	0.00
August 30	87	50	0.01
August 31	63	40	0.00

September 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	61	37	0.00
September 2	58	38	0.11
September 3	59	42	0.00
September 4	68	33	0.01
September 5	77	42	0.00
September 6	72	44	0.00
September 7	65	31	0.00
September 8	73	33	0.00
September 9	83	35	0.00
September 10	72	43	0.00
September 11	63	34	0.00
September 12	63	27	0.00
September 13	73	31	0.00
September 14	74	32	0.00
September 15	78	37	0.00
September 16	78	40	0.00
September 17	81	42	0.00
September 18	71	40	0.02
September 19	60	35	0.02
September 20	74	30	0.00
September 21	79	34	0.00
September 22	80	40	0.00
September 23	77	42	0.00
September 24	69	47	0.00
September 25	61	37	0.00
September 26	47	30	0.00
September 27	n/a	n/a	n/a
September 28	53	35	0.00
September 29	71	35	0.00
September 30	71	35	0.00

October 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	59	27	0.01
October 2	44	20	0.00
October 3	64	18	0.00
October 4	72	36	0.00
October 5	74	34	0.00
October 6	61	39	0.00
October 7	61	37	0.00
October 8	72	42	0.00
October 9	65	38	0.00
October 10	62	27	0.00
October 11	73	33	0.00
October 12	68	41	0.00
October 13	73	37	0.00
October 14	64	31	0.00
October 15	44	21	0.00
October 16	47	15	0.00
October 17	53	23	0.00
October 18	50	22	0.00
October 19	59	20	0.00
October 20	68	24	0.00
October 21	69	34	0.00
October 22	69	33	0.00
October 23	69	28	0.00
October 24	65	35	0.00
October 25	69	33	0.00
October 26	71	41	0.00
October 27	53	38	0.05
October 28	56	34	0.00
October 29	47	32	0.00
October 30	62	31	0.00
October 31	63	23	0.00

November 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	n/a	n/a	0.00
November 2	n/a	n/a	0.00
November 3	n/a	n/a	0.00
November 4	57	37	0.00
November 5	55	31	0.06
November 6	67	36	0.00
November 7	68	34	0.00
November 8	61	32	0.00
November 9	55	27	0.00
November 10	58	36	0.00
November 11	59	35	0.00
November 12	69	37	0.00
November 13	67	36	0.00
November 14	64	32	0.00
November 15	61	28	0.00
November 16	56	29	0.00
November 17	59	29	0.00
November 18	43	24	0.00
November 19	46	18	0.00
November 20	47	22	0.00
November 21	33	11	0.00
November 22	34	14	0.00
November 23	34	9	0.00
November 24	39	17	0.00
November 25	49	32	0.00
November 26	46	23	0.00
November 27	45	19	0.00
November 28	44	18	0.00
November 29	51	23	0.00
November 30	60	35	0.00

December 1999 Dillon Weather

Day	High (°F)	Low (°F)	Precip. (inches)
December 1	41	24	0.05
December 2	36	20	0.00
December 3	32	11	0.00
December 4	31	4	0.00
December 5	38	13	0.00
December 6	41	21	0.00
December 7	35	14	0.00
December 8	31	10	0.00
December 9	33	8	0.03
December 10	34	17	0.00
December 11	35	18	0.00
December 12	43	23	0.00
December 13	38	8	0.05
December 14	32	9	0.00
December 15	36	20	0.00
December 16	42	29	0.00
December 17	40	26	0.00
December 18	40	26	0.02
December 19	32	11	0.00
December 20	38	17	0.01
December 21	31	19	0.01
December 22	36	14	0.00
December 23	36	10	0.00
December 24	39	14	0.00
December 25	38	12	0.00
December 26	36	11	0.00
December 27	38	12	0.00
December 28	43	14	0.00
December 29	44	18	0.00
December 30	39	15	0.00
December 31	38	20	0.00

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Weather Station Details

Years	Station	Coordinates
1941–2024	Dillon Airport	location
1895–1940	University of Montana Western	location