Great Falls Weather in 2021

Historical record of Great Falls, Montana weather for the year 2021 based on NOAA data.

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2021 Great Falls Weather Extremes
Highest temperature	99 °F	July 27
Lowest temperature	-33 °F	February 12
Highest daily low	69 °F	August 2
Lowest daily high	-16 °F	February 11
Most daily precipitation	1.0 inches	May 26
Most daily snow	3.2 inches	May 21
Total annual precipitation	11.2 inches	-
Total annual snow	45.9 inches	-

What was the hottest temperature in Great Falls in 2021?

The highest temperature recorded in Great Falls, Montana in 2021 was 99 °F which happened 3 different times.

Highest Temperatures: All-Time By Year

Highest Temperatures in Great Falls in 2021

Rank	Temperature	Date
1	99 °F	Jul 27
1	99 °F	Jul 1
1	99 °F	Jun 14
4	98 °F	Aug 15
4	98 °F	Aug 1
4	98 °F	Jul 4
7	97 °F	Jul 2
8	96 °F	Aug 16
8	96 °F	Jul 31
8	96 °F	Jul 26
8	96 °F	Jul 15
8	96 °F	Jun 30

What was the coldest temperature in Great Falls in 2021?

The lowest temperature recorded in Great Falls, Montana in 2021 was -33 °F which happened on Feb 12.

Lowest Temperatures: All-Time By Year

Lowest Temperatures in Great Falls in 2021

Rank	Temperature	Date
1	-33 °F	February 12
2	-31 °F	February 11
3	-26 °F	February 13
3	-26 °F	February 10
5	-25 °F	February 14
6	-24 °F	December 27
7	-23 °F	December 26
7	-23 °F	February 9
9	-21 °F	December 29
10	-19 °F	December 31

January 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
January 1	44	31	0.00	0.0
January 2	47	37	0.00	0.0
January 3	51	32	0.00	0.0
January 4	46	25	0.00	0.0
January 5	45	31	0.00	0.0
January 6	51	34	0.00	0.0
January 7	42	32	0.18	0.7
January 8	42	20	0.00	0.0
January 9	39	17	0.00	0.0
January 10	43	25	0.00	0.0
January 11	47	32	0.00	0.0
January 12	50	33	0.00	0.0
January 13	53	29	0.00	0.0
January 14	40	17	0.00	0.0
January 15	47	18	0.00	0.0
January 16	45	21	0.00	0.0
January 17	48	30	0.00	0.0
January 18	40	17	0.00	0.0
January 19	41	18	0.00	0.0
January 20	44	20	0.00	0.0
January 21	32	15	0.00	0.0
January 22	33	6	0.00	0.0
January 23	28	5	0.00	0.0
January 24	37	11	0.00	0.0
January 25	19	5	0.00	0.0
January 26	24	8	0.00	0.2
January 27	40	8	0.00	0.0
January 28	50	17	0.00	0.0
January 29	34	13	0.00	0.0
January 30	43	11	0.00	0.0
January 31	49	26	0.00	0.0

February 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
February 1	54	33	0.00	0.0
February 2	59	32	0.00	0.0
February 3	35	8	0.00	0.0
February 4	37	10	0.00	0.0
February 5	28	-4	0.25	2.7
February 6	2	-5	0.17	1.5
February 7	-5	-17	0.01	0.4
February 8	-7	-16	0.04	0.4
February 9	-11	-23	0.00	0.1
February 10	-10	-26	0.01	0.2
February 11	-16	-31	0.01	0.1
February 12	-7	-33	0.00	0.0
February 13	-6	-26	0.00	0.0
February 14	-5	-25	0.00	0.1
February 15	6	-15	0.04	0.3
February 16	23	1	0.02	0.2
February 17	18	6	0.07	1.7
February 18	27	0	0.00	0.0
February 19	38	24	0.00	0.0
February 20	36	23	0.00	0.0
February 21	39	26	0.00	0.0
February 22	51	38	0.00	0.0
February 23	40	21	0.00	0.0
February 24	33	19	0.03	0.6
February 25	40	24	0.00	0.0
February 26	38	21	0.02	0.3
February 27	25	10	0.02	0.2
February 28	43	14	0.00	0.0

March 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
March 1	53	32	0.00	0.0
March 2	53	38	0.00	0.0
March 3	57	29	0.00	0.0
March 4	60	19	0.00	0.0
March 5	64	28	0.00	0.0
March 6	64	27	0.00	0.0
March 7	52	22	0.00	0.0
March 8	41	24	0.20	1.7
March 9	38	23	0.00	0.0
March 10	44	20	0.00	0.0
March 11	48	23	0.00	0.0
March 12	51	23	0.00	0.0
March 13	56	18	0.00	0.0
March 14	62	30	0.00	0.0
March 15	59	25	0.00	0.0
March 16	52	17	0.00	0.0
March 17	58	21	0.00	0.0
March 18	64	39	0.00	0.0
March 19	61	39	0.00	0.0
March 20	52	21	0.00	0.0
March 21	50	25	0.00	0.0
March 22	50	34	0.00	0.0
March 23	34	25	0.11	1.7
March 24	48	26	0.00	0.0
March 25	34	27	0.02	0.0
March 26	48	20	0.00	0.0
March 27	61	29	0.00	0.0
March 28	65	46	0.00	0.0
March 29	46	19	0.07	1.6
March 30	38	15	0.02	0.0
March 31	54	24	0.00	0.0

April 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
April 1	71	37	0.00	0.0
April 2	68	36	0.00	0.0
April 3	72	43	0.00	0.0
April 4	69	41	0.00	0.0
April 5	40	27	0.34	1.0
April 6	56	23	0.00	0.0
April 7	68	37	0.00	0.0
April 8	53	24	0.00	0.0
April 9	56	24	0.00	0.0
April 10	53	26	0.01	0.0
April 11	35	19	0.11	2.3
April 12	41	17	0.00	0.0
April 13	39	14	0.04	0.6
April 14	33	24	0.05	0.3
April 15	44	30	0.00	0.0
April 16	54	23	0.00	0.0
April 17	66	26	0.00	0.0
April 18	56	27	0.31	2.1
April 19	35	17	0.01	0.7
April 20	44	23	0.00	0.0
April 21	57	22	0.00	0.0
April 22	46	27	0.02	0.1
April 23	39	24	0.04	0.4
April 24	40	29	0.11	0.0
April 25	46	34	0.05	0.0
April 26	57	29	0.01	0.0
April 27	65	29	0.00	0.0
April 28	68	38	0.00	0.0
April 29	74	46	0.00	0.0
April 30	80	49	0.00	0.0

May 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
May 1	70	44	0.00	0.0
May 2	54	29	0.57	0.0
May 3	59	27	0.00	0.0
May 4	63	39	0.00	0.0
May 5	61	36	0.00	0.0
May 6	72	35	0.00	0.0
May 7	65	40	0.42	0.0
May 8	50	34	0.34	0.0
May 9	46	32	0.28	0.0
May 10	53	34	0.00	0.0
May 11	60	38	0.03	0.0
May 12	64	33	0.00	0.0
May 13	66	44	0.01	0.0
May 14	68	38	0.00	0.0
May 15	72	37	0.00	0.0
May 16	77	38	0.00	0.0
May 17	83	52	0.00	0.0
May 18	73	44	0.00	0.0
May 19	52	35	0.52	0.0
May 20	39	26	0.53	1.9
May 21	30	26	0.38	3.2
May 22	41	26	0.00	0.0
May 23	44	33	0.15	0.0
May 24	59	43	0.00	0.0
May 25	61	43	0.10	0.0
May 26	50	39	0.97	0.0
May 27	73	39	0.00	0.0
May 28	61	37	0.00	0.0
May 29	66	35	0.00	0.0
May 30	72	36	0.00	0.0
May 31	78	42	0.00	0.0

June 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
June 1	81	44	0.00
June 2	87	49	0.00
June 3	93	54	0.05
June 4	89	59	0.02
June 5	81	50	0.00
June 6	66	40	0.00
June 7	72	36	0.00
June 8	71	47	0.01
June 9	72	41	0.00
June 10	69	43	0.07
June 11	71	41	0.00
June 12	75	45	0.00
June 13	89	46	0.00
June 14	99	53	0.00
June 15	93	58	0.00
June 16	76	46	0.00
June 17	81	40	0.00
June 18	80	39	0.00
June 19	79	50	0.03
June 20	67	51	0.21
June 21	81	44	0.00
June 22	88	51	0.00
June 23	80	60	0.01
June 24	75	51	0.05
June 25	79	45	0.00
June 26	86	51	0.00
June 27	88	55	0.00
June 28	91	51	0.00
June 29	94	51	0.00
June 30	96	52	0.00

July 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
July 1	99	54	0.00
July 2	97	65	0.00
July 3	95	60	0.00
July 4	98	54	0.00
July 5	82	56	0.00
July 6	92	54	0.00
July 7	88	56	0.00
July 8	86	53	0.00
July 9	86	48	0.00
July 10	94	52	0.00
July 11	92	50	0.00
July 12	90	45	0.00
July 13	73	50	0.28
July 14	89	49	0.00
July 15	96	64	0.00
July 16	89	55	0.00
July 17	93	60	0.00
July 18	93	54	0.00
July 19	82	57	0.01
July 20	93	62	0.00
July 21	93	60	0.00
July 22	92	55	0.00
July 23	89	47	0.00
July 24	90	50	0.00
July 25	94	52	0.00
July 26	96	56	0.00
July 27	99	69	0.00
July 28	92	64	0.00
July 29	93	62	0.03
July 30	95	60	0.00
July 31	96	59	0.00

August 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
August 1	98	62	0.00
August 2	92	69	0.00
August 3	91	62	0.00
August 4	93	59	0.00
August 5	89	50	0.00
August 6	91	61	0.00
August 7	90	62	0.00
August 8	68	50	0.33
August 9	74	45	0.03
August 10	85	57	0.00
August 11	93	57	0.00
August 12	84	49	0.00
August 13	89	48	0.00
August 14	94	52	0.00
August 15	98	60	0.00
August 16	96	68	0.00
August 17	68	47	0.91
August 18	48	44	0.71
August 19	67	44	0.00
August 20	67	50	0.07
August 21	68	49	0.10
August 22	75	51	0.00
August 23	79	46	0.00
August 24	68	35	0.00
August 25	73	39	0.00
August 26	79	48	0.02
August 27	71	48	0.00
August 28	72	46	0.01
August 29	81	40	0.00
August 30	87	44	0.00
August 31	81	47	0.00

September 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)
September 1	74	37	0.00
September 2	66	36	0.00
September 3	75	36	0.00
September 4	80	39	0.00
September 5	87	51	0.00
September 6	86	51	0.00
September 7	82	45	0.00
September 8	85	45	0.00
September 9	86	52	0.00
September 10	79	55	0.00
September 11	73	46	0.01
September 12	80	42	0.01
September 13	72	43	0.14
September 14	74	43	0.00
September 15	77	50	0.00
September 16	59	33	0.07
September 17	79	32	0.00
September 18	86	51	0.00
September 19	64	40	0.03
September 20	66	37	0.00
September 21	74	39	0.00
September 22	81	51	0.00
September 23	72	43	0.00
September 24	77	35	0.00
September 25	85	53	0.00
September 26	86	47	0.00
September 27	84	54	0.00
September 28	67	40	0.00
September 29	63	35	0.00
September 30	72	34	0.00

October 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
October 1	71	40	0.00	0.0
October 2	76	32	0.00	0.0
October 3	80	52	0.00	0.0
October 4	84	47	0.00	0.0
October 5	83	52	0.00	0.0
October 6	77	53	0.00	0.0
October 7	55	36	0.00	0.0
October 8	56	30	0.00	0.0
October 9	65	35	0.00	0.0
October 10	63	36	0.00	0.0
October 11	42	27	0.00	0.0
October 12	42	20	0.00	0.0
October 13	51	28	0.00	0.0
October 14	49	30	0.00	0.0
October 15	57	31	0.00	0.0
October 16	71	46	0.00	0.0
October 17	76	48	0.00	0.0
October 18	60	37	0.00	0.0
October 19	47	28	0.00	0.0
October 20	66	24	0.00	0.0
October 21	64	36	0.00	0.0
October 22	72	32	0.00	0.0
October 23	59	32	0.01	0.0
October 24	60	32	0.00	0.0
October 25	59	42	0.04	0.0
October 26	55	39	0.00	0.0
October 27	53	38	0.00	0.0
October 28	63	34	0.00	0.0
October 29	70	34	0.03	0.0
October 30	34	21	0.02	0.1
October 31	36	11	0.00	0.0

November 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
November 1	40	8	0.00	0.0
November 2	57	16	0.00	0.0
November 3	62	29	0.00	0.0
November 4	68	47	0.02	0.0
November 5	59	34	0.00	0.0
November 6	54	34	0.01	0.0
November 7	46	29	0.00	0.0
November 8	48	23	0.00	0.0
November 9	55	24	0.00	0.0
November 10	46	20	0.00	0.0
November 11	44	17	0.00	0.0
November 12	57	27	0.00	0.0
November 13	55	41	0.00	0.0
November 14	63	40	0.00	0.0
November 15	66	47	0.00	0.0
November 16	48	15	0.00	0.0
November 17	37	9	0.00	0.0
November 18	45	26	0.00	0.0
November 19	52	26	0.00	0.0
November 20	45	22	0.00	0.0
November 21	50	27	0.00	0.0
November 22	57	42	0.00	0.0
November 23	51	25	0.25	2.9
November 24	34	21	0.02	0.8
November 25	51	34	0.00	0.0
November 26	54	33	0.00	0.0
November 27	52	29	0.00	0.0
November 28	62	51	0.00	0.0
November 29	54	34	0.00	0.0
November 30	52	37	0.00	0.0

December 2021 Great Falls Weather

Day	High (°F)	Low (°F)	Precip. (inches)	Snow (inches)
December 1	69	52	0.00	0.0
December 2	60	28	0.00	0.0
December 3	32	16	0.00	0.0
December 4	40	23	0.11	1.4
December 5	33	3	0.00	0.1
December 6	30	4	0.01	0.1
December 7	47	8	0.00	0.0
December 8	52	26	0.00	0.0
December 9	34	13	0.00	0.0
December 10	35	12	0.00	0.0
December 11	44	30	0.00	0.0
December 12	47	24	0.00	0.0
December 13	47	22	0.00	0.0
December 14	49	15	0.15	2.3
December 15	22	7	0.04	0.4
December 16	30	0	0.04	1.2
December 17	12	-15	0.06	2.4
December 18	41	13	0.00	0.0
December 19	41	11	0.07	1.4
December 20	26	1	0.04	0.4
December 21	41	14	0.00	0.0
December 22	43	31	0.00	0.0
December 23	43	14	0.02	0.0
December 24	14	4	0.00	0.0
December 25	7	-2	0.03	0.3
December 26	0	-23	0.13	2.5
December 27	-3	-24	0.02	0.1
December 28	18	-7	0.06	0.5
December 29	15	-21	0.01	0.1
December 30	20	-2	0.04	1.3
December 31	0	-19	0.06	0.3

Next Year >

Weather Station Details

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