Sheridan, WY

Wyoming · Records since 1907–2026

☀️ 77°F
Currently in Sheridan
As of 11:45 AM MDT

Records for September 7

🔥 Record High

104°F

September 7, 2022

+24° from 80° normal

❄ Record Low

32°F

September 7, 2010

-13° from 45° normal
🌞 Normal high: 80°F 🌑 Normal low: 45°F 1991–2020 normals

All-Time Records — Sheridan

🔥
109°F
Hottest Day Ever
Jul 12, 2026
❄
-41°F
Coldest Day Ever
Dec 9, 1919
🌧
3.32"
Wettest Day Ever
Jun 3, 1944
☃
22.7"
Most Snow in One Day
Apr 3, 1955

Top 10 Record Highs — September 7

# Temp Date
🏆 104°F September 7, 2022
2 98°F September 7, 1947
3 97°F September 7, 1983
4 97°F September 7, 1978
5 97°F September 7, 1908
6 95°F September 7, 1931
7 94°F September 7, 1963
8 93°F September 7, 1998
9 93°F September 7, 1994
10 92°F September 7, 2024

Top 5 Record Lows — September 7

# Temp Date
🥶 32°F September 7, 2010
2 34°F September 7, 2020
3 34°F September 7, 1984
4 34°F September 7, 1964
5 36°F September 7, 2000
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 1907–2026. Climate normals represent the 1991–2020 average.

Heat Wave Summary — Sheridan

threshold: 95°F (90th percentile of historical Jun–Aug highs)
4.3
Avg heat wave length
days (historical)
101°
Avg peak temp
during heat waves
1
Dangerous nights 2026
Overnights ≥ 70°F
2
Heat waves 2026
so far

2026 Daily High Temperature vs Normal

Year to date
Above normal Below normal

166 of 249 days with data were above the 1991–2020 normal high for their date.

Days ≥ 90°F Per Year

1907–2026
39
2026 so far
29
Avg/year 1970–2025
42
Avg/year (last 10 complete)
63
Most in a year (1936)

Average Daily High by Decade

Full year · complete decades only

Longest Heat Waves — Sheridan

# Dates Days Peak Avg High Avg Overnight Low
🏆 Jul 14, 1936 – Jul 25, 1936 12 104°F (Jul 18) 99°F 62°F
2 Aug 2, 1983 – Aug 11, 1983 10 106°F (Aug 7) 100°F 64°F
3 Jun 17, 1988 – Jun 26, 1988 10 105°F (Jun 26) 99°F 63°F
4 Jul 2, 1936 – Jul 10, 1936 9 104°F (Jul 5) 100°F 61°F
5 Aug 25, 1983 – Sep 1, 1983 8 103°F (Sep 1) 98°F 58°F
6 Jul 21, 1931 – Jul 27, 1931 7 103°F (Jul 23) 101°F 60°F
7 Aug 10, 2003 – Aug 16, 2003 7 102°F (Aug 13) 100°F 60°F
8 Jul 11, 2002 – Jul 16, 2002 6 107°F (Jul 14) 101°F 59°F
9 Jul 13, 2022 – Jul 18, 2022 6 104°F (Jul 17) 100°F 57°F
10 Jul 18, 1960 – Jul 23, 1960 6 103°F (Jul 19) 100°F 64°F

Heat Waves Per Year

Warm Summer Nights (Jun–Aug)

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

52
2026 total
above-normal nights
45.6
Avg / summer
1970–2020
77
Most in a summer
1941

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

8.26"
2026 YTD
Normal: 10.81"
-2.55"
0.00"
September so far
September normal: 1.47"
-1.47"
0
2026 heavy rain days
Days with ≥ 1.0"

2026 Accumulation vs. Normal

Running total since Jan 1 against the normal pace for the same date · Sheridan is 2.55" behind the normal pace

Monthly Precipitation — Last 24 Months

Blue = actual · dashed line = monthly normal

Annual Precipitation Per Year (1907–2026)

Blue = above average · tan = below average · gold = 2026 (partial)
Since 1907, annual totals have trended -0.09" per decade, about -1.1" across the record.

Heavy Rain Days Per Year (≥ 1.0")

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

Month in Review — August 2026

69.5°F

Average temperature · August 2026

129th-warmest month on record

50th-warmest August of 120 on record

+0.3° vs. 69.3° average (1991–2020)
77.9°F
Warmest month ever
July 1936
77.7°F
Warmest August ever
1983
14
Days ≥ 90°F
in August
109°F
Hottest of 2026
Jul 12

Longest 90°F Streak in August

6 consecutive days with highs of at least 90°F (Aug 6–11, 2026, peaking at 97°F)

The longest August streak since 2024 (2 years). The August record is 17 days, set in 1983.

Average August Temperature by Year

1907–2026 · 2026 highlighted · trend +0.28° per decade (warming since 1907)

Precipitation — August 2026

Month total against the 1991–2020 average and every other August on record

0.06"
Total precipitation
August 2026
-0.65"
vs. average
Normal: 0.71" · 8% of normal
6th-driest
August rank
of 120 on record
3.02"
Wettest August ever
1968 · driest 0.00" (1925)

August Precipitation by Year

1907–2026 · 2026 highlighted

Wettest Augusts on Record

# Year Total
1 1968 3.02"
2 1927 2.52"
3 1998 2.47"
4 1960 2.32"
5 1939 2.22"
6 1945 2.00"
7 2023 1.98"
8 1977 1.95"
9 1935 1.90"
10 1943 1.88"

Driest Augusts on Record

# Year Total
1 1970 0.00"
2 1925 0.00"
3 2001 0.01"
4 1937 0.03"
5 2013 0.05"
6 2026 0.06"
7 1940 0.07"
8 1995 0.09"
9 1907 0.09"
10 1949 0.10"

Warmest Augusts on Record

# Year Avg Temp
1 1983 77.7°F
2 2003 74.1°F
3 2022 73.6°F
4 1971 73.6°F
5 1982 73.5°F
6 1991 73.1°F
7 1961 73.1°F
8 2001 72.8°F
9 1984 72.8°F
10 1949 72.7°F

Warmest Months on Record (Any Month)

# Month Avg Temp
1 July 1936 77.9°F
2 August 1983 77.7°F
3 July 2026 76.1°F
4 July 2007 75.8°F
5 July 2012 75.8°F
6 July 2006 75.7°F
7 July 2021 75.6°F
8 July 1954 75.2°F
9 July 1960 75.1°F
10 July 2002 74.8°F

Nearby Stations — August 2026

How the same month ranked at the closest reporting stations

Station Avg Temp August Rank
Sheridan, WY 69.5°F 50th of 120
Billings, MT 73.0°F 26th of 92
Casper, WY 71.5°F 16th of 87
Lander, WY 72.6°F 13th of 135
Rapid City, SD 73.1°F 26th of 85
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 1,432 complete months on record. Precipitation totals sum the daily reports for the month, with trace amounts counted as zero. A month missing any day of precipitation data is left out entirely (an unreported day is unreported rain), so the precipitation ranking covers 120 complete Augusts. Normals are the 1991–2020 mean for the same calendar month. Trend lines are a least-squares fit across every year shown.

Fall in Review — Fall 2026

September 1 – November 30, 2026

Fall 2026 is still under way. Season totals and rankings appear once November closes; the markers below update as they happen.

Summer to Winter — 2026

Each turning point of the season against its 1991–2020 normal date, with the earliest and latest on record

Marker 2026 Normal vs. normal Earliest Latest Drift
Last 90°F day
The final day of summer heat
 Sep 4
so far
 Sep 15 Jul 28, 1912 Oct 10, 2015 +1.1 d/decade
Last 80°F day
The last genuinely warm afternoon
 Sep 6
so far
 Oct 8 Sep 7, 1912 Nov 12, 1999 +0.3 d/decade
First high below 50°F
The first afternoon that stays cold
 not yet Sep 28 Aug 24, 1910 Oct 29, 2024 +0.3 d/decade
First 32°F freeze
Growing season over
 not yet Sep 19 Aug 17, 2002 Oct 24, 1963 +0.3 d/decade
First 28°F hard freeze
Cold enough to end tender growth
 not yet Oct 3 Aug 25, 1910 Oct 29, 1960 +0.5 d/decade
First 20°F night
Winter cold arriving
 not yet Oct 20 Sep 12, 2014 Nov 21, 1934 -0.3 d/decade
First measurable snow
0.1" or more in a day
 not yet — Sep 8, 1962 Dec 21, 1918 -2.9 d/decade

Drift is a least-squares fit across every year on record. Positive means the marker has been arriving later.

First Freeze by Year

The first 32°F night of each autumn since 1907 · trending +0.3 days later per decade

121
Normal length
1991–2020 average
165
Longest on record
2023
81
Shortest on record
1910

Growing Season Length by Year

Days between the last spring freeze and the first fall freeze · trending +0.2 days longer per decade

Fall Average Temperature by Year

1907–2025 · 2026 highlighted · trend +0.18° per decade (warming since 1907)

Fall Precipitation by Year

1907–2025 · 2026 highlighted · trend +0.02" per decade (wetter since 1907)

About this data. Fall is meteorological autumn, September 1 through November 30, the window NOAA uses for seasonal statistics. Seasonal temperature is the day-weighted mean of the three monthly means; precipitation is their sum, and a season missing any of the three months is left out of the rankings. Freeze, heat and snow markers come from daily NOAA Threadex observations via RCC ACIS: freezes and snow are the first occurrence on or after July 1, and the last 90°F and 80°F days are the final ones anywhere in the calendar year. Growing season counts the freeze-free days between the last spring 32°F and the first fall 32°F.
← Back to all stations