Great Falls Weather in 1940

Historical record of Great Falls, Montana weather for the year 1940 based on NOAA data.

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1940 Great Falls Weather Extremes
Highest temperature	105 °F	August 12
Lowest temperature	-19 °F	January 24
Highest daily low	72 °F	August 31
Lowest daily high	-2 °F	January 24
Most daily precipitation	0.7 inches	May 26
Most daily snow	4.5 inches	March 25
Total annual precipitation	12.1 inches	-
Total annual snow	25.7 inches	-

What was the hottest temperature in Great Falls in 1940?

The highest temperature recorded in Great Falls, Montana in 1940 was 105 °F which happened on August 12.

Highest Temperatures: All-Time By Year

Highest Temperatures in Great Falls in 1940

Rank	Temperature	Date
1	105 °F	Aug 12
2	101 °F	Aug 9
3	98 °F	Aug 31
3	98 °F	Jul 23
5	96 °F	Jul 22
6	95 °F	Aug 8
6	95 °F	Jul 21
6	95 °F	Jul 20
6	95 °F	Jul 12
10	94 °F	Aug 30
10	94 °F	Jun 25

What was the coldest temperature in Great Falls in 1940?

The lowest temperature recorded in Great Falls, Montana in 1940 was -19 °F which happened on Jan 24.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Great Falls in 1940

Rank	Temperature	Date
1	-19 °F	January 24
2	-18 °F	January 25
3	-17 °F	December 13
4	-15 °F	January 18
5	-13 °F	January 17
6	-12 °F	February 23
7	-11 °F	February 24
7	-11 °F	January 23
9	-10 °F	January 26
10	-9 °F	December 12
10	-9 °F	January 19

January 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	35	14	0.04	0.6
January 2	47	13	0.02	0.0
January 3	18	11	0.06	0.8
January 4	17	11	0.06	0.7
January 5	18	9	0.04	0.2
January 6	22	11	0.20	1.0
January 7	28	13	0.01	0.1
January 8	24	0	0.00	0.0
January 9	36	0	0.00	0.0
January 10	37	7	0.11	1.1
January 11	31	7	0.00	0.0
January 12	27	10	0.00	0.0
January 13	31	14	0.00	0.0
January 14	33	-1	0.00	0.0
January 15	40	2	0.00	0.0
January 16	38	-2	0.00	0.0
January 17	9	-13	0.01	0.3
January 18	6	-15	0.00	0.0
January 19	10	-9	0.01	0.0
January 20	11	-1	0.00	0.0
January 21	24	-4	0.00	0.0
January 22	14	-5	0.00	0.0
January 23	-1	-11	0.02	0.3
January 24	-2	-19	0.00	0.0
January 25	2	-18	0.00	0.0
January 26	37	-10	0.00	0.0
January 27	43	31	0.00	0.0
January 28	52	37	0.00	0.0
January 29	56	35	0.00	0.0
January 30	43	26	0.00	0.0
January 31	35	17	0.00	0.0

February 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	20	7	0.06	2.0
February 2	16	-1	0.01	0.2
February 3	32	6	0.00	0.0
February 4	44	16	0.00	0.0
February 5	45	28	0.00	0.0
February 6	40	26	0.06	0.0
February 7	37	17	0.07	0.8
February 8	42	16	0.00	0.0
February 9	45	36	0.00	0.0
February 10	46	29	0.00	0.0
February 11	38	26	0.00	0.0
February 12	36	22	0.00	0.0
February 13	42	25	0.00	0.0
February 14	42	26	0.00	0.0
February 15	34	18	0.00	0.0
February 16	40	21	0.00	0.0
February 17	45	31	0.00	0.0
February 18	38	12	0.16	1.0
February 19	25	5	0.00	0.0
February 20	22	9	0.02	0.3
February 21	29	10	0.00	0.0
February 22	14	4	0.12	1.5
February 23	5	-12	0.02	0.4
February 24	18	-11	0.00	0.0
February 25	18	1	0.00	0.0
February 26	9	-2	0.05	0.5
February 27	14	-4	0.10	1.2
February 28	42	1	0.02	0.0
February 29	45	31	0.00	0.0

March 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	48	33	0.00	0.0
March 2	47	32	0.01	0.0
March 3	48	30	0.00	0.0
March 4	52	34	0.00	0.0
March 5	46	31	0.00	0.0
March 6	43	30	0.00	0.0
March 7	48	31	0.00	0.0
March 8	50	31	0.00	0.0
March 9	40	23	0.00	0.0
March 10	28	22	0.10	1.0
March 11	32	16	0.03	0.3
March 12	41	12	0.00	0.0
March 13	48	23	0.00	0.0
March 14	52	33	0.00	0.0
March 15	64	37	0.00	0.0
March 16	53	34	0.00	0.0
March 17	53	28	0.00	0.0
March 18	53	34	0.00	0.0
March 19	42	23	0.00	0.0
March 20	55	24	0.00	0.0
March 21	58	26	0.00	0.0
March 22	40	21	0.00	0.0
March 23	30	18	0.00	0.0
March 24	37	20	0.00	0.0
March 25	26	18	0.45	4.5
March 26	34	18	0.00	0.0
March 27	52	24	0.00	0.0
March 28	56	35	0.00	0.0
March 29	56	27	0.00	0.0
March 30	59	32	0.00	0.0
March 31	47	34	0.24	0.0

April 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	38	30	0.14	0.0
April 2	37	28	0.12	1.0
April 3	34	24	0.00	0.0
April 4	44	16	0.00	0.0
April 5	49	26	0.01	0.0
April 6	55	35	0.00	0.0
April 7	48	26	0.00	0.0
April 8	57	33	0.01	0.0
April 9	43	28	0.09	0.0
April 10	29	10	0.19	2.5
April 11	35	3	0.00	0.8
April 12	67	33	0.00	0.0
April 13	75	47	0.00	0.0
April 14	67	39	0.03	0.0
April 15	39	28	0.18	0.0
April 16	48	25	0.00	0.0
April 17	66	34	0.00	0.0
April 18	67	42	0.00	0.0
April 19	67	36	0.00	0.0
April 20	57	38	0.19	0.0
April 21	42	32	0.30	0.0
April 22	55	35	0.00	0.0
April 23	53	36	0.26	0.0
April 24	45	30	0.00	0.0
April 25	44	30	0.01	0.0
April 26	61	30	0.23	0.0
April 27	54	39	0.02	0.0
April 28	59	37	0.00	0.0
April 29	55	35	0.00	0.0
April 30	57	33	0.00	0.0

May 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
May 1	70	46	0.00
May 2	81	48	0.00
May 3	64	47	0.00
May 4	56	35	0.15
May 5	58	35	0.00
May 6	60	35	0.01
May 7	66	35	0.00
May 8	73	38	0.00
May 9	78	49	0.00
May 10	86	52	0.00
May 11	79	50	0.00
May 12	77	42	0.00
May 13	59	39	0.00
May 14	69	37	0.00
May 15	71	42	0.00
May 16	67	40	0.08
May 17	58	39	0.00
May 18	73	41	0.00
May 19	72	46	0.06
May 20	67	41	0.00
May 21	74	39	0.00
May 22	80	44	0.00
May 23	84	47	0.00
May 24	84	53	0.00
May 25	86	55	0.34
May 26	60	43	0.72
May 27	70	39	0.31
May 28	69	43	0.00
May 29	72	39	0.00
May 30	80	45	0.40
May 31	77	52	0.03

June 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	74	50	0.22
June 2	70	46	0.00
June 3	69	46	0.00
June 4	74	48	0.01
June 5	67	46	0.00
June 6	68	43	0.00
June 7	59	42	0.08
June 8	51	42	0.31
June 9	68	44	0.04
June 10	79	48	0.00
June 11	86	55	0.00
June 12	92	55	0.00
June 13	93	64	0.00
June 14	83	53	0.00
June 15	89	51	0.00
June 16	91	58	0.00
June 17	82	59	0.00
June 18	86	52	0.00
June 19	87	56	0.00
June 20	88	57	0.19
June 21	85	50	0.00
June 22	66	45	0.06
June 23	76	42	0.00
June 24	86	52	0.00
June 25	94	56	0.00
June 26	84	55	0.00
June 27	71	48	0.00
June 28	82	43	0.00
June 29	90	51	0.00
June 30	74	59	0.00

July 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	67	58	0.03
July 2	84	50	0.00
July 3	92	61	0.00
July 4	85	59	0.02
July 5	84	57	0.00
July 6	79	49	0.00
July 7	87	50	0.00
July 8	92	56	0.00
July 9	91	60	0.00
July 10	89	55	0.00
July 11	90	53	0.00
July 12	95	64	0.00
July 13	93	64	0.00
July 14	79	57	0.00
July 15	87	55	0.13
July 16	88	60	0.00
July 17	89	58	0.05
July 18	92	55	0.00
July 19	89	65	0.00
July 20	95	57	0.00
July 21	95	55	0.00
July 22	96	59	0.00
July 23	98	62	0.00
July 24	81	58	0.02
July 25	77	51	0.00
July 26	68	51	0.19
July 27	72	52	0.22
July 28	77	46	0.00
July 29	86	57	0.00
July 30	89	58	0.05
July 31	83	58	0.02

August 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	80	54	0.00
August 2	80	51	0.03
August 3	85	48	0.00
August 4	69	52	0.00
August 5	82	48	0.00
August 6	92	54	0.00
August 7	90	58	0.00
August 8	95	66	0.00
August 9	101	60	0.00
August 10	93	59	0.00
August 11	91	56	0.00
August 12	105	60	0.00
August 13	83	59	0.00
August 14	87	52	0.00
August 15	79	49	0.00
August 16	73	50	0.00
August 17	80	50	0.00
August 18	85	48	0.00
August 19	90	53	0.00
August 20	92	53	0.00
August 21	90	56	0.01
August 22	86	60	0.00
August 23	81	58	0.00
August 24	82	52	0.00
August 25	83	61	0.00
August 26	88	53	0.00
August 27	86	55	0.00
August 28	74	47	0.01
August 29	79	47	0.00
August 30	94	51	0.00
August 31	98	72	0.00

September 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	92	67	0.00
September 2	90	59	0.00
September 3	85	55	0.29
September 4	82	55	0.00
September 5	68	50	0.00
September 6	76	42	0.00
September 7	86	48	0.00
September 8	68	52	0.00
September 9	72	52	0.00
September 10	80	45	0.00
September 11	88	54	0.00
September 12	86	56	0.02
September 13	86	56	0.11
September 14	73	54	0.05
September 15	79	45	0.00
September 16	73	53	0.02
September 17	77	52	0.00
September 18	79	53	0.11
September 19	67	51	0.02
September 20	66	47	0.20
September 21	68	50	0.68
September 22	69	46	0.03
September 23	57	50	0.33
September 24	61	45	0.00
September 25	76	47	0.00
September 26	75	45	0.00
September 27	69	43	0.00
September 28	67	46	0.00
September 29	55	49	0.36
September 30	64	42	0.02

October 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
October 1	55	46	0.06
October 2	55	44	0.01
October 3	48	43	0.55
October 4	58	41	0.00
October 5	56	39	0.00
October 6	65	39	0.00
October 7	72	42	0.00
October 8	72	42	0.00
October 9	66	39	0.00
October 10	68	47	0.00
October 11	67	53	0.00
October 12	59	45	0.02
October 13	47	37	0.14
October 14	60	34	0.00
October 15	70	49	0.00
October 16	61	37	0.00
October 17	72	49	0.00
October 18	71	55	0.00
October 19	78	55	0.00
October 20	72	53	0.00
October 21	65	44	0.00
October 22	63	38	0.00
October 23	62	39	0.00
October 24	70	46	0.00
October 25	62	48	0.00
October 26	48	37	0.05
October 27	37	33	0.00
October 28	49	32	0.00
October 29	55	33	0.00
October 30	53	39	0.00
October 31	51	34	0.00

November 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
November 1	51	32	0.01
November 2	51	32	0.12
November 3	37	26	0.00
November 4	37	23	0.00
November 5	39	23	0.00
November 6	44	18	0.00
November 7	23	9	0.01
November 8	11	4	0.00
November 9	6	-7	0.07
November 10	6	-6	0.03
November 11	9	-7	0.01
November 12	22	-7	0.00
November 13	32	7	0.00
November 14	48	26	0.00
November 15	58	42	0.00
November 16	59	39	0.00
November 17	59	40	0.00
November 18	44	15	0.24
November 19	32	14	0.00
November 20	36	26	0.00
November 21	26	17	0.60
November 22	25	10	0.00
November 23	31	17	0.00
November 24	39	28	0.00
November 25	40	24	0.00
November 26	39	16	0.00
November 27	42	13	0.00
November 28	41	32	0.02
November 29	47	25	0.02
November 30	42	23	0.00

December 1940 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	38	10	0.00	0.0
December 2	46	9	0.00	0.0
December 3	56	40	0.00	0.0
December 4	48	32	0.00	0.0
December 5	56	38	0.00	0.0
December 6	45	34	0.00	0.0
December 7	52	38	0.00	0.0
December 8	61	33	0.00	0.0
December 9	40	26	0.00	0.0
December 10	30	16	0.04	0.5
December 11	22	6	0.14	2.0
December 12	6	-9	0.00	0.1
December 13	14	-17	0.00	0.0
December 14	24	8	0.00	0.0
December 15	29	13	0.00	0.0
December 16	29	7	0.00	0.0
December 17	36	12	0.00	0.0
December 18	44	34	0.00	0.0
December 19	46	39	0.00	0.0
December 20	55	40	0.00	0.0
December 21	54	44	0.00	0.0
December 22	54	36	0.00	0.0
December 23	50	35	0.00	0.0
December 24	49	36	0.00	0.0
December 25	47	34	0.00	0.0
December 26	46	33	0.00	0.0
December 27	44	30	0.00	0.0
December 28	40	27	0.00	0.0
December 29	44	29	0.00	0.0
December 30	34	21	0.00	0.0
December 31	37	21	0.00	0.0

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Weather Station Details

Years	Station	Coordinates
1937–2024	Great Falls International Airport	location
1892–1937	Great Falls 16th Street	location