Mitchell, SD

South Dakota · Records since 1893–2026

☀️ 71°F
Currently in Mitchell
As of 11:15 AM CDT

Records for August 16

🔥 Record High

109°F

August 16, 1988

+25° from 84° normal

❄ Record Low

38°F

August 16, 1897

-23° from 61° normal
🌞 Normal high: 84°F 🌑 Normal low: 61°F 1991–2020 normals

All-Time Records — Mitchell

🔥
116°F
Hottest Day Ever
Jul 24, 1940
-40°F
Coldest Day Ever
Feb 10, 1994
🌧
4.87"
Wettest Day Ever
Jun 20, 2024
24.0"
Most Snow in One Day
Mar 10, 1956

Top 10 Record Highs — August 16

# Temp Date
🏆 109°F August 16, 1988
2 102°F August 16, 1935
3 102°F August 16, 1906
4 100°F August 16, 1937
5 99°F August 16, 1972
6 99°F August 16, 1955
7 98°F August 16, 1931
8 98°F August 16, 1922
9 97°F August 16, 1950
10 96°F August 16, 1999

Top 5 Record Lows — August 16

# Temp Date
🥶 38°F August 16, 1897
2 48°F August 16, 1896
3 49°F August 16, 1943
4 50°F August 16, 2012
5 50°F August 16, 1942
About this data — Records are sourced from the NOAA Threadex dataset via RCC ACIS, a quality-controlled record for long-term climate stations. Threadex adjusts for station relocations and observation-time changes, making records comparable across all years since 1893–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Mitchell

threshold: 96°F (90th percentile of historical Jun–Aug highs)
4.2
Avg heat wave length
days (historical)
103°
Avg peak temp
during heat waves
11
Dangerous nights 2026
Overnights ≥ 70°F
1
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

133 of 227 days with data were above the 1991–2020 normal high for their date.


Days ≥ 90°F Per Year

1894–2026
33
2026 so far
34
Avg/year 1970–2025
32
Avg/year (last 10 complete)
68
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only


Longest Heat Waves — Mitchell

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 2, 1936 – Jul 19, 1936 18 115°F (Jul 4) 107°F 72°F
2 Jul 20, 1941 – Jul 30, 1941 11 108°F (Jul 23) 101°F 70°F
3 Jul 17, 1974 – Jul 26, 1974 10 106°F (Jul 21) 100°F 67°F
4 Jul 18, 1932 – Jul 27, 1932 10 104°F (Jul 19) 100°F 68°F
5 Jul 17, 1940 – Jul 25, 1940 9 116°F (Jul 24) 103°F 72°F
6 Jul 2, 1937 – Jul 10, 1937 9 108°F (Jul 6) 99°F 67°F
7 Jul 26, 1987 – Aug 3, 1987 9 99°F (Jul 30) 97°F 71°F
8 Jul 4, 1930 – Jul 11, 1930 8 110°F (Jul 11) 104°F 70°F
9 Jul 18, 1934 – Jul 24, 1934 7 114°F (Jul 21) 107°F 74°F
10 Jul 29, 1955 – Aug 4, 1955 7 107°F (Jul 31) 103°F 74°F

Heat Waves Per Year


Warm Summer Nights (Jun–Aug)

Nights where the overnight low exceeded the 1991–2020 normal low

43
2026 so far
above-normal nights
41.9
Avg / summer
1970–2020
61
Most in a summer
1936

Above-Normal Summer Nights Per Year

Average June–August Low by Decade

Overnight lows · complete decades only

Precipitation

Actual vs. 1991–2020 full-month and full-season normals

8.24"
2026 YTD
Normal: 14.36"
-6.12"
0.56"
August so far
August normal: 3.14"
-2.58"
4.14"
Summer so far
Summer normal: 9.01"
-4.87"
2
2026 heavy rain days
Days with ≥ 1.0"

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1970–2026)

Blue = above average · tan = below average · gold = 2026 (partial)

Heavy Rain Days Per Year (≥ 1.0")

Compare year-to-year changes in days with heavy rainfall (≥ 1.0")

Month in Review — July 2026

78.7°F

Average temperature · July 2026

23rd-warmest month on record

17th-warmest July of 127 on record

+4.0° vs. 74.6° average (1991–2020)
86.5°F
Warmest month ever
July 1936
86.5°F
Warmest July ever
1936
20
Days ≥ 90°F
in July
102°F
Hottest of 2026
Jul 25

Longest 90°F Streak in July

11 consecutive days with highs of at least 90°F (Jul 10–20, 2026, peaking at 101°F)

The longest July streak since 2012 (14 years). The July record is 27 days, set in 1936.


Average July Temperature by Year

1896–2026 · 2026 highlighted


Warmest Julys on Record

# Year Avg Temp
1 1936 86.5°F
2 1935 82.1°F
3 2012 81.7°F
4 1955 80.6°F
5 2011 80.3°F
6 1930 80.2°F
7 1934 79.6°F
8 1966 79.6°F
9 1974 79.4°F
10 1901 79.2°F

Warmest Months on Record (Any Month)

# Month Avg Temp
1 July 1936 86.5°F
2 July 1935 82.1°F
3 July 2012 81.7°F
4 July 1955 80.6°F
5 June 1933 80.4°F
6 July 2011 80.3°F
7 August 1937 80.3°F
8 July 1930 80.2°F
9 August 1955 79.7°F
10 August 1983 79.6°F

Nearby Stations — July 2026

How the same month ranked at the closest reporting stations

Station Avg Temp July Rank
Mitchell, SD 78.7°F 17th of 127
Huron, SD 78.1°F 14th of 146
Sioux Falls, SD 77.1°F 19th of 134
Sioux City, IA 77.3°F 33rd of 138
Norfolk, NE 78.7°F 18th of 128
About this data. Monthly averages are the mean of daily average temperatures, computed from NOAA Threadex records via RCC ACIS. Months missing more than three days of observations are excluded from the rankings, so the in-progress month never appears. Rankings cover 1473 complete months on record.