Great Falls Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Great Falls, Montana, based on NOAA data.
Also see:
What's the hottest day of the year in Great Falls?
On average, July 27 is the hottest day of the year Great Falls, Montana. From 1991–2020, the average high temperature on July 27 was 85.7 °F and the average low was 52.8 °F.
What's the coldest day of the year in Great Falls?
On average, January 3 is the coldest day of the year Great Falls, Montana. From 1991–2020, the average high temperature on January 3 was 33.4 °F, and the average low was 14.2 °F.
Average Temperature by Day
  • Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.
Day Average (°F)
High Low
January 1 33.5 14.3
January 2 33.5 14.3
January 3 33.4 14.2
January 4 33.6 14.2
January 5 33.7 14.4
January 6 34.1 14.7
January 7 34.3 15.0
January 8 34.3 14.9
January 9 34.4 14.9
January 10 34.5 15.0
January 11 34.5 15.0
January 12 34.6 15.0
January 13 34.7 15.1
January 14 34.8 15.3
January 15 35.0 15.3
January 16 35.3 15.5
January 17 35.5 15.7
January 18 35.7 15.9
January 19 35.9 16.0
January 20 36.1 16.1
January 21 36.3 16.3
January 22 36.4 16.3
January 23 36.4 16.4
January 24 36.5 16.4
January 25 36.6 16.4
January 26 36.7 16.4
January 27 36.7 16.3
January 28 36.7 16.3
January 29 36.9 16.4
January 30 37.0 16.7
January 31 37.1 16.8
February 1 37.2 16.8
February 2 37.3 16.8
February 3 37.3 16.7
February 4 37.2 16.6
February 5 37.2 16.6
February 6 37.1 16.6
February 7 37.2 16.6
February 8 37.2 16.5
February 9 37.3 16.4
February 10 37.2 16.3
February 11 37.1 16.1
February 12 37.1 16.0
February 13 37.1 16.0
February 14 37.0 16.0
February 15 37.0 15.9
February 16 37.0 15.9
February 17 37.1 15.9
February 18 37.2 15.9
February 19 37.3 15.9
February 20 37.3 15.8
February 21 37.4 15.8
February 22 37.7 15.8
February 23 37.9 16.1
February 24 38.4 16.4
February 25 38.9 16.8
February 26 39.4 17.2
February 27 39.7 17.5
February 28 40.0 17.7
March 1 40.5 17.9
March 2 40.9 18.2
March 3 41.0 18.3
March 4 41.3 18.6
March 5 41.6 18.7
March 6 42.0 18.9
March 7 42.5 19.2
March 8 42.8 19.5
March 9 43.1 19.8
March 10 43.4 20.1
March 11 43.9 20.5
March 12 44.5 20.9
March 13 44.9 21.5
March 14 45.3 21.9
March 15 45.6 22.3
March 16 46.2 22.7
March 17 46.6 23.0
March 18 46.9 23.3
March 19 47.2 23.6
March 20 47.5 23.9
March 21 48.1 24.3
March 22 48.4 24.7
March 23 48.7 25.2
March 24 49.1 25.4
March 25 49.4 25.6
March 26 49.5 25.8
March 27 49.7 25.9
March 28 49.8 26.0
March 29 49.9 26.1
March 30 50.1 26.3
March 31 50.2 26.5
April 1 50.4 26.7
April 2 50.7 26.8
April 3 51.1 27.2
April 4 51.3 27.4
April 5 51.5 27.7
April 6 51.9 28.0
April 7 52.3 28.2
April 8 52.9 28.6
April 9 53.2 29.0
April 10 53.6 29.2
April 11 53.9 29.5
April 12 54.3 29.7
April 13 54.6 30.0
April 14 54.7 30.2
April 15 54.9 30.4
April 16 55.1 30.5
April 17 55.4 30.8
April 18 55.8 31.1
April 19 56.1 31.2
April 20 56.5 31.5
April 21 57.0 31.7
April 22 57.2 32.0
April 23 57.5 32.3
April 24 57.8 32.5
April 25 58.1 32.8
April 26 58.3 33.0
April 27 58.6 33.3
April 28 58.9 33.5
April 29 59.3 33.8
April 30 59.9 34.1
May 1 60.3 34.5
May 2 60.6 34.8
May 3 61.0 35.1
May 4 61.3 35.5
May 5 61.5 35.8
May 6 61.8 36.0
May 7 61.8 36.3
May 8 62.1 36.6
May 9 62.3 36.8
May 10 62.6 37.1
May 11 62.9 37.3
May 12 63.2 37.7
May 13 63.5 38.0
May 14 63.9 38.3
May 15 64.3 38.7
May 16 64.6 39.1
May 17 64.9 39.4
May 18 65.2 39.8
May 19 65.5 40.1
May 20 65.7 40.4
May 21 66.1 40.7
May 22 66.4 41.0
May 23 66.7 41.3
May 24 67.0 41.6
May 25 67.3 41.9
May 26 67.6 42.3
May 27 67.7 42.5
May 28 67.9 42.8
May 29 68.0 43.0
May 30 68.2 43.2
May 31 68.3 43.3
June 1 68.4 43.4
June 2 68.6 43.6
June 3 68.7 43.7
June 4 68.9 43.9
June 5 69.1 44.1
June 6 69.5 44.3
June 7 69.9 44.5
June 8 70.3 44.8
June 9 70.6 45.0
June 10 70.9 45.1
June 11 71.2 45.3
June 12 71.6 45.5
June 13 71.9 45.7
June 14 72.4 45.9
June 15 72.6 46.2
June 16 72.9 46.4
June 17 73.3 46.6
June 18 73.6 46.8
June 19 73.9 47.0
June 20 74.2 47.2
June 21 74.6 47.3
June 22 75.0 47.5
June 23 75.4 47.7
June 24 75.8 47.9
June 25 76.4 48.1
June 26 76.8 48.3
June 27 77.2 48.5
June 28 77.6 48.7
June 29 78.1 48.9
June 30 78.6 49.2
July 1 79.1 49.4
July 2 79.6 49.6
July 3 80.1 49.8
July 4 80.6 50.1
July 5 81.0 50.4
July 6 81.3 50.5
July 7 81.6 50.6
July 8 82.0 50.8
July 9 82.4 51.0
July 10 82.7 51.2
July 11 83.0 51.3
July 12 83.2 51.4
July 13 83.5 51.6
July 14 83.8 51.7
July 15 84.1 51.8
July 16 84.4 51.9
July 17 84.7 52.1
July 18 84.9 52.2
July 19 85.0 52.3
July 20 85.2 52.4
July 21 85.2 52.4
July 22 85.3 52.5
July 23 85.5 52.6
July 24 85.6 52.7
July 25 85.6 52.7
July 26 85.7 52.7
July 27 85.7 52.8
July 28 85.7 52.8
July 29 85.6 52.7
July 30 85.6 52.7
July 31 85.6 52.6
August 1 85.5 52.6
August 2 85.3 52.5
August 3 85.2 52.4
August 4 85.1 52.4
August 5 85.1 52.3
August 6 85.0 52.2
August 7 84.9 52.0
August 8 84.7 52.0
August 9 84.6 51.9
August 10 84.4 51.8
August 11 84.2 51.6
August 12 84.0 51.5
August 13 83.8 51.3
August 14 83.6 51.1
August 15 83.4 51.0
August 16 83.2 50.8
August 17 83.0 50.6
August 18 82.8 50.5
August 19 82.7 50.3
August 20 82.6 50.1
August 21 82.2 49.9
August 22 81.8 49.6
August 23 81.5 49.4
August 24 81.2 49.2
August 25 80.8 48.9
August 26 80.4 48.7
August 27 80.1 48.5
August 28 79.7 48.2
August 29 79.3 47.9
August 30 78.9 47.7
August 31 78.5 47.4
September 1 78.2 47.2
September 2 77.8 46.9
September 3 77.2 46.7
September 4 76.7 46.4
September 5 76.2 46.1
September 6 75.6 45.8
September 7 75.0 45.4
September 8 74.6 45.1
September 9 74.3 44.8
September 10 73.8 44.6
September 11 73.5 44.4
September 12 73.0 44.2
September 13 72.6 43.8
September 14 72.2 43.5
September 15 71.8 43.3
September 16 71.4 43.0
September 17 70.9 42.7
September 18 70.3 42.3
September 19 69.7 41.9
September 20 69.1 41.5
September 21 68.6 41.1
September 22 68.2 40.9
September 23 67.8 40.6
September 24 67.4 40.3
September 25 67.0 39.9
September 26 66.5 39.7
September 27 65.9 39.3
September 28 65.4 39.0
September 29 65.0 38.7
September 30 64.4 38.3
October 1 64.0 38.0
October 2 63.6 37.7
October 3 63.3 37.5
October 4 62.9 37.2
October 5 62.6 37.0
October 6 62.4 36.9
October 7 62.1 36.6
October 8 61.6 36.3
October 9 61.1 36.0
October 10 60.5 35.6
October 11 59.9 35.1
October 12 59.4 34.8
October 13 58.8 34.5
October 14 58.3 34.0
October 15 57.6 33.6
October 16 57.0 33.2
October 17 56.6 32.9
October 18 56.2 32.5
October 19 55.8 32.3
October 20 55.4 32.1
October 21 54.8 31.7
October 22 54.3 31.4
October 23 53.8 31.0
October 24 53.4 30.8
October 25 52.9 30.5
October 26 52.6 30.2
October 27 52.1 29.8
October 28 51.5 29.4
October 29 51.1 29.1
October 30 50.7 28.9
October 31 50.3 28.6
November 1 49.9 28.4
November 2 49.6 28.1
November 3 49.1 27.7
November 4 48.6 27.4
November 5 48.0 27.0
November 6 47.5 26.6
November 7 47.1 26.2
November 8 46.6 25.9
November 9 46.1 25.6
November 10 45.7 25.3
November 11 45.3 25.1
November 12 44.8 24.8
November 13 44.5 24.7
November 14 44.2 24.4
November 15 43.8 24.2
November 16 43.6 24.0
November 17 43.4 23.8
November 18 43.0 23.5
November 19 42.6 23.1
November 20 42.2 22.8
November 21 41.8 22.4
November 22 41.3 22.0
November 23 40.9 21.6
November 24 40.6 21.4
November 25 40.5 21.2
November 26 40.3 21.2
November 27 40.0 21.0
November 28 39.8 20.8
November 29 39.5 20.6
November 30 39.1 20.2
December 1 38.7 19.9
December 2 38.5 19.7
December 3 38.3 19.5
December 4 38.1 19.2
December 5 37.9 19.1
December 6 37.7 19.1
December 7 37.5 18.8
December 8 37.2 18.5
December 9 36.9 18.1
December 10 36.8 18.0
December 11 36.7 17.8
December 12 36.5 17.6
December 13 36.3 17.5
December 14 36.2 17.4
December 15 35.9 17.2
December 16 35.7 16.7
December 17 35.4 16.5
December 18 35.2 16.3
December 19 35.2 16.2
December 20 35.1 16.1
December 21 35.0 16.0
December 22 34.8 15.9
December 23 34.7 15.8
December 24 34.6 15.8
December 25 34.5 15.5
December 26 34.3 15.3
December 27 34.1 15.1
December 28 33.8 14.9
December 29 33.8 14.7
December 30 33.7 14.6
December 31 33.5 14.5
Weather Station Details
Years Station Coordinates
1937–2024 Great Falls International Airport location
1892–1937 Great Falls 16th Street location
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