Sioux City Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Sioux City, Iowa, based on NOAA data.
Also see:
What's the hottest day of the year in Sioux City?
On average, July 18 is the hottest day of the year Sioux City, Iowa. From 1991–2020, the average high temperature on July 18 was 85.8 °F and the average low was 63.8 °F.
What's the coldest day of the year in Sioux City?
On average, January 12 is the coldest day of the year Sioux City, Iowa. From 1991–2020, the average high temperature on January 12 was 29.9 °F, and the average low was 10.5 °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 30.6 11.6
January 2 30.4 11.5
January 3 30.3 11.3
January 4 30.2 11.0
January 5 30.1 10.9
January 6 30.0 10.7
January 7 30.1 10.8
January 8 30.2 10.9
January 9 30.1 10.8
January 10 30.0 10.6
January 11 29.9 10.6
January 12 29.9 10.5
January 13 29.9 10.4
January 14 29.9 10.5
January 15 30.0 10.6
January 16 30.0 10.6
January 17 30.2 10.8
January 18 30.3 10.9
January 19 30.5 11.0
January 20 30.7 11.1
January 21 30.8 11.2
January 22 30.9 11.3
January 23 30.9 11.4
January 24 31.0 11.5
January 25 31.0 11.5
January 26 31.0 11.5
January 27 31.1 11.6
January 28 31.2 11.7
January 29 31.3 11.8
January 30 31.5 12.0
January 31 31.7 12.1
February 1 31.8 12.3
February 2 32.0 12.5
February 3 32.2 12.8
February 4 32.6 13.0
February 5 32.8 13.2
February 6 33.1 13.4
February 7 33.3 13.6
February 8 33.6 13.9
February 9 33.8 14.1
February 10 33.9 14.3
February 11 34.0 14.4
February 12 34.1 14.5
February 13 34.3 14.6
February 14 34.6 14.9
February 15 34.8 15.0
February 16 34.9 15.1
February 17 35.0 15.3
February 18 35.4 15.6
February 19 35.8 15.9
February 20 36.2 16.2
February 21 36.5 16.5
February 22 36.9 16.8
February 23 37.2 17.1
February 24 37.7 17.5
February 25 38.1 17.8
February 26 38.6 18.2
February 27 39.3 18.7
February 28 39.7 19.1
March 1 40.2 19.5
March 2 40.9 20.0
March 3 41.3 20.5
March 4 41.8 20.9
March 5 42.2 21.3
March 6 42.6 21.7
March 7 43.1 22.0
March 8 43.6 22.4
March 9 44.1 22.8
March 10 44.5 23.2
March 11 45.0 23.6
March 12 45.7 24.1
March 13 46.4 24.6
March 14 47.0 25.2
March 15 47.6 25.7
March 16 48.3 26.2
March 17 49.1 26.8
March 18 49.8 27.3
March 19 50.3 27.7
March 20 50.8 28.0
March 21 51.2 28.3
March 22 51.9 28.6
March 23 52.5 29.1
March 24 53.0 29.5
March 25 53.5 29.9
March 26 53.9 30.2
March 27 54.3 30.5
March 28 54.6 30.9
March 29 54.9 31.2
March 30 55.3 31.5
March 31 55.7 31.8
April 1 56.2 32.1
April 2 56.6 32.4
April 3 57.0 32.7
April 4 57.4 33.1
April 5 57.8 33.5
April 6 58.1 33.9
April 7 58.5 34.2
April 8 59.0 34.5
April 9 59.7 34.8
April 10 60.1 35.2
April 11 60.5 35.5
April 12 60.8 35.8
April 13 61.0 36.0
April 14 61.3 36.3
April 15 61.6 36.7
April 16 61.7 37.1
April 17 62.0 37.5
April 18 62.3 37.8
April 19 62.7 38.2
April 20 63.0 38.6
April 21 63.4 39.0
April 22 63.8 39.4
April 23 64.3 39.9
April 24 64.7 40.5
April 25 65.2 40.9
April 26 65.7 41.3
April 27 66.1 41.8
April 28 66.3 42.1
April 29 66.5 42.4
April 30 66.9 42.7
May 1 67.3 43.0
May 2 67.8 43.4
May 3 68.2 43.7
May 4 68.7 44.0
May 5 69.1 44.4
May 6 69.4 44.8
May 7 69.8 45.3
May 8 70.0 45.8
May 9 70.3 46.2
May 10 70.6 46.7
May 11 70.9 47.1
May 12 71.3 47.5
May 13 71.7 47.9
May 14 72.1 48.3
May 15 72.6 48.7
May 16 73.0 49.1
May 17 73.4 49.6
May 18 73.8 50.0
May 19 74.1 50.4
May 20 74.3 50.7
May 21 74.6 51.0
May 22 74.9 51.3
May 23 75.3 51.7
May 24 75.6 52.1
May 25 75.9 52.5
May 26 76.4 52.8
May 27 76.9 53.3
May 28 77.3 53.8
May 29 77.5 54.2
May 30 77.8 54.5
May 31 78.0 55.0
June 1 78.3 55.4
June 2 78.6 55.7
June 3 78.9 56.1
June 4 79.3 56.5
June 5 79.6 56.8
June 6 79.9 57.1
June 7 80.2 57.3
June 8 80.6 57.6
June 9 80.9 58.0
June 10 81.3 58.3
June 11 81.5 58.6
June 12 81.8 58.9
June 13 82.0 59.2
June 14 82.2 59.4
June 15 82.5 59.7
June 16 82.7 59.9
June 17 83.0 60.1
June 18 83.2 60.4
June 19 83.4 60.6
June 20 83.5 60.8
June 21 83.5 61.0
June 22 83.7 61.2
June 23 83.9 61.3
June 24 84.0 61.5
June 25 84.1 61.7
June 26 84.2 61.9
June 27 84.4 62.0
June 28 84.5 62.3
June 29 84.6 62.4
June 30 84.7 62.4
July 1 84.8 62.6
July 2 84.9 62.6
July 3 85.1 62.8
July 4 85.2 63.0
July 5 85.3 63.2
July 6 85.4 63.3
July 7 85.5 63.4
July 8 85.6 63.5
July 9 85.6 63.6
July 10 85.7 63.7
July 11 85.7 63.8
July 12 85.7 63.8
July 13 85.7 63.8
July 14 85.7 63.8
July 15 85.7 63.8
July 16 85.7 63.8
July 17 85.8 63.8
July 18 85.8 63.8
July 19 85.8 63.8
July 20 85.8 63.8
July 21 85.7 63.7
July 22 85.6 63.7
July 23 85.5 63.6
July 24 85.4 63.6
July 25 85.4 63.6
July 26 85.4 63.5
July 27 85.4 63.5
July 28 85.2 63.4
July 29 85.1 63.3
July 30 85.0 63.2
July 31 84.9 63.0
August 1 84.6 62.8
August 2 84.4 62.6
August 3 84.3 62.4
August 4 84.1 62.2
August 5 84.0 61.9
August 6 83.9 61.8
August 7 83.8 61.7
August 8 83.8 61.6
August 9 83.7 61.5
August 10 83.7 61.4
August 11 83.6 61.4
August 12 83.6 61.4
August 13 83.5 61.5
August 14 83.5 61.4
August 15 83.4 61.3
August 16 83.3 61.1
August 17 83.1 61.0
August 18 83.0 60.9
August 19 83.0 60.8
August 20 83.0 60.6
August 21 83.0 60.4
August 22 82.8 60.2
August 23 82.8 60.0
August 24 82.5 59.7
August 25 82.4 59.3
August 26 82.2 59.1
August 27 82.0 58.8
August 28 81.9 58.6
August 29 81.7 58.5
August 30 81.6 58.2
August 31 81.4 57.9
September 1 81.2 57.6
September 2 81.1 57.4
September 3 80.9 57.1
September 4 80.7 56.8
September 5 80.4 56.5
September 6 80.1 56.1
September 7 79.7 55.6
September 8 79.3 55.2
September 9 79.0 54.6
September 10 78.6 54.1
September 11 78.3 53.6
September 12 78.0 53.1
September 13 77.7 52.6
September 14 77.4 52.1
September 15 77.2 51.6
September 16 77.0 51.2
September 17 76.7 50.7
September 18 76.3 50.3
September 19 75.9 49.8
September 20 75.4 49.3
September 21 74.9 48.8
September 22 74.6 48.4
September 23 74.3 48.0
September 24 74.0 47.6
September 25 73.6 47.2
September 26 73.2 46.7
September 27 72.8 46.2
September 28 72.4 45.8
September 29 72.0 45.3
September 30 71.5 44.9
October 1 70.9 44.4
October 2 70.4 43.9
October 3 70.0 43.5
October 4 69.6 43.0
October 5 69.1 42.6
October 6 68.8 42.2
October 7 68.5 41.7
October 8 68.1 41.4
October 9 67.6 41.1
October 10 67.0 40.6
October 11 66.5 40.2
October 12 65.9 39.8
October 13 65.3 39.5
October 14 64.7 39.1
October 15 64.1 38.6
October 16 63.4 38.2
October 17 62.8 37.7
October 18 62.3 37.3
October 19 61.8 36.9
October 20 61.3 36.4
October 21 60.8 35.9
October 22 60.2 35.5
October 23 59.6 35.0
October 24 59.1 34.5
October 25 58.6 34.2
October 26 58.1 33.7
October 27 57.5 33.2
October 28 56.9 32.7
October 29 56.2 32.3
October 30 55.8 31.9
October 31 55.3 31.5
November 1 54.8 31.0
November 2 54.3 30.6
November 3 53.8 30.2
November 4 53.3 29.9
November 5 52.7 29.6
November 6 52.2 29.1
November 7 51.7 28.6
November 8 51.2 28.3
November 9 50.7 27.9
November 10 50.2 27.5
November 11 49.7 27.1
November 12 49.1 26.7
November 13 48.6 26.2
November 14 48.1 25.7
November 15 47.7 25.4
November 16 47.2 25.0
November 17 46.7 24.7
November 18 46.3 24.4
November 19 45.7 24.0
November 20 45.1 23.6
November 21 44.6 23.2
November 22 43.9 22.8
November 23 43.3 22.3
November 24 42.6 21.9
November 25 42.2 21.5
November 26 41.8 21.1
November 27 41.4 20.8
November 28 41.0 20.5
November 29 40.7 20.2
November 30 40.2 19.9
December 1 39.7 19.7
December 2 39.2 19.3
December 3 38.7 18.8
December 4 38.2 18.4
December 5 37.7 18.1
December 6 37.4 17.9
December 7 37.0 17.5
December 8 36.6 17.3
December 9 36.2 17.0
December 10 35.7 16.5
December 11 35.4 16.3
December 12 35.1 16.1
December 13 34.8 15.9
December 14 34.6 15.7
December 15 34.3 15.4
December 16 34.0 15.2
December 17 33.6 14.8
December 18 33.2 14.5
December 19 32.9 14.2
December 20 32.8 13.9
December 21 32.5 13.7
December 22 32.3 13.5
December 23 32.1 13.3
December 24 31.9 13.2
December 25 31.8 13.1
December 26 31.7 13.0
December 27 31.5 12.8
December 28 31.3 12.6
December 29 31.0 12.3
December 30 30.8 12.0
December 31 30.7 11.9
Weather Station Details
Years Station Coordinates
1948–2024 Sioux City Gateway Airport location
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