Lander, WY
Wyoming · Records since 1891–2026
Records for August 15
🔥 Record High
August 15, 2000
+11° from 86° normal❄ Record Low
August 15, 1893
-18° from 54° normalAll-Time Records — Lander
Top 10 Record Highs — August 15
| # | Temp | Date |
|---|---|---|
| 🏆 | 97°F | August 15, 2000 |
| 2 | 96°F | August 15, 1909 |
| 3 | 94°F | August 15, 2015 |
| 4 | 94°F | August 15, 2003 |
| 5 | 94°F | August 15, 1992 |
| 6 | 94°F | August 15, 1929 |
| 7 | 93°F | August 15, 2023 |
| 8 | 93°F | August 15, 1994 |
| 9 | 93°F | August 15, 1986 |
| 10 | 93°F | August 15, 1971 |
Top 5 Record Lows — August 15
| # | Temp | Date |
|---|---|---|
| 🥶 | 36°F | August 15, 1893 |
| 2 | 40°F | August 15, 1938 |
| 3 | 41°F | August 15, 1978 |
| 4 | 42°F | August 15, 1951 |
| 5 | 43°F | August 15, 2009 |
Heat Wave Summary — Lander
threshold: 92°F (90th percentile of historical Jun–Aug highs)2026 Daily High Temperature vs Normal
Year to date168 of 225 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1891–2026Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Lander
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 15, 2007 – Jul 24, 2007 | 10 | 100°F (Jul 22) | 96°F | 62°F |
| 2 | Jun 28, 2001 – Jul 6, 2001 | 9 | 98°F (Jul 5) | 96°F | 61°F |
| 3 | Jul 26, 2008 – Aug 3, 2008 | 9 | 98°F (Aug 1) | 95°F | 59°F |
| 4 | Jun 24, 2002 – Jul 2, 2002 | 9 | 97°F (Jun 28) | 95°F | 60°F |
| 5 | Jul 22, 1966 – Jul 30, 1966 | 9 | 95°F (Jul 24) | 94°F | 59°F |
| 6 | Aug 1, 2001 – Aug 8, 2001 | 8 | 100°F (Aug 6) | 95°F | 61°F |
| 7 | Jun 19, 1988 – Jun 26, 1988 | 8 | 99°F (Jun 24) | 95°F | 64°F |
| 8 | Jun 23, 1990 – Jun 30, 1990 | 8 | 99°F (Jun 26) | 97°F | 61°F |
| 9 | Jul 16, 1901 – Jul 23, 1901 | 8 | 97°F (Jul 19) | 94°F | 55°F |
| 10 | Jul 4, 1976 – Jul 11, 1976 | 8 | 97°F (Jul 9) | 94°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
1st-warmest month on record
1st-warmest July of 135 on record
+4.6° vs. 71.9° average (1991–2020)Longest 90°F Streak in July
12 consecutive days with highs of at least 90°F (Jul 4–15, 2026, peaking at 102°F)
The longest July streak since 2021 (5 years). The July record is 17 days, set in 2003.
Average July Temperature by Year
1892–2026 · 2026 highlighted
Warmest Julys on Record
| # | Year | Avg Temp |
|---|---|---|
| 1 | 2026 | 76.5°F |
| 2 | 2003 | 75.9°F |
| 3 | 2006 | 75.9°F |
| 4 | 2007 | 75.6°F |
| 5 | 2012 | 75.5°F |
| 6 | 1988 | 75.3°F |
| 7 | 2002 | 74.9°F |
| 8 | 2022 | 74.9°F |
| 9 | 2021 | 74.8°F |
| 10 | 1954 | 74.7°F |
Warmest Months on Record (Any Month)
| # | Month | Avg Temp |
|---|---|---|
| 1 | July 2026 | 76.5°F |
| 2 | July 2003 | 75.9°F |
| 3 | July 2006 | 75.9°F |
| 4 | July 2007 | 75.6°F |
| 5 | July 2012 | 75.5°F |
| 6 | July 1988 | 75.3°F |
| 7 | July 2002 | 74.9°F |
| 8 | July 2022 | 74.9°F |
| 9 | July 2021 | 74.8°F |
| 10 | July 1954 | 74.7°F |
Nearby Stations — July 2026
How the same month ranked at the closest reporting stations
| Station | Avg Temp | July Rank |
|---|---|---|
| Lander, WY | 76.5°F | 1st of 135 |
| Casper, WY | 75.8°F | 2nd of 87 |
| Sheridan, WY | 76.1°F | 2nd of 120 |
| Pocatello, ID | 75.4°F | 1st of 88 |
| Billings, MT | 78.8°F | 4th of 92 |