Cheyenne, WY
Wyoming · Records since 1872–2026
Records for August 9
🔥 Record High
August 9, 2021
+10° from 83° normal❄ Record Low
August 9, 1912
-15° from 56° normalAll-Time Records — Cheyenne
Top 10 Record Highs — August 9
| # | Temp | Date |
|---|---|---|
| 🏆 | 93°F | August 9, 2021 |
| 2 | 93°F | August 9, 2020 |
| 3 | 92°F | August 9, 2016 |
| 4 | 92°F | August 9, 2006 |
| 5 | 92°F | August 9, 2000 |
| 6 | 92°F | August 9, 1992 |
| 7 | 92°F | August 9, 1958 |
| 8 | 91°F | August 9, 2019 |
| 9 | 91°F | August 9, 2003 |
| 10 | 91°F | August 9, 1877 |
Top 5 Record Lows — August 9
| # | Temp | Date |
|---|---|---|
| 🥶 | 41°F | August 9, 1912 |
| 2 | 43°F | August 9, 1939 |
| 3 | 45°F | August 9, 1946 |
| 4 | 45°F | August 9, 1915 |
| 5 | 46°F | August 9, 1906 |
Heat Wave Summary — Cheyenne
threshold: 89°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date155 of 220 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1873–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Cheyenne
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 1, 1874 – Jul 13, 1874 | 13 | 98°F (Jul 4) | 92°F | 54°F |
| 2 | Jul 12, 2022 – Jul 22, 2022 | 11 | 99°F (Jul 18) | 94°F | 62°F |
| 3 | Jul 11, 1934 – Jul 21, 1934 | 11 | 97°F (Jul 15) | 93°F | 61°F |
| 4 | Jul 3, 1966 – Jul 13, 1966 | 11 | 95°F (Jul 7) | 92°F | 60°F |
| 5 | Jul 12, 2003 – Jul 21, 2003 | 10 | 98°F (Jul 16) | 93°F | 62°F |
| 6 | Jul 1, 1989 – Jul 10, 1989 | 10 | 97°F (Jul 7) | 94°F | 56°F |
| 7 | Jul 21, 1987 – Jul 30, 1987 | 10 | 92°F (Jul 23) | 91°F | 60°F |
| 8 | Jul 8, 1939 – Jul 16, 1939 | 9 | 100°F (Jul 11) | 94°F | 57°F |
| 9 | Jul 29, 2024 – Aug 6, 2024 | 9 | 94°F (Jul 30) | 93°F | 58°F |
| 10 | Jul 12, 2002 – Jul 20, 2002 | 9 | 93°F (Jul 16) | 92°F | 59°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
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
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
Average temperature · July 2026
3rd-warmest month on record
3rd-warmest July of 154 on record
+4.1° vs. 69.9° average (1991–2020)Longest 90°F Streak in July
3 consecutive days with highs of at least 90°F (Jul 24–26, 2026, peaking at 99°F)
The longest July streak since 2024 (2 years). The July record is 10 days, set in 2003.
Average July Temperature by Year
1873–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2003 | 75.1°F |
| 2 | 1966 | 74.4°F |
| 3 | 2026 | 74.1°F |
| 4 | 2002 | 73.6°F |
| 5 | 2022 | 73.4°F |
| 6 | 1934 | 72.7°F |
| 7 | 1963 | 72.7°F |
| 8 | 1936 | 72.4°F |
| 9 | 2021 | 72.4°F |
| 10 | 2012 | 72.3°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2003 | 75.1°F |
| 2 | July 1966 | 74.4°F |
| 3 | July 2026 | 74.1°F |
| 4 | July 2002 | 73.6°F |
| 5 | July 2022 | 73.4°F |
| 6 | July 1934 | 72.7°F |
| 7 | July 1963 | 72.7°F |
| 8 | July 1936 | 72.4°F |
| 9 | July 2021 | 72.4°F |
| 10 | July 2012 | 72.3°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Cheyenne, WY | 74.1°F | 3rd of 154 |
| Scottsbluff, NE | 79.1°F | 3rd of 130 |
| Denver, CO | 78.7°F | 2nd of 155 |
| Casper, WY | 75.8°F | 2nd of 87 |
| Colorado Springs, CO | 74.5°F | 8th of 131 |