Casper, WY
Wyoming · Records since 1939–2026
☁️ 88°F
Feels like 82°
Currently in Casper
As of 6:00 PM MDT
Records for July 28
🔥 Record High
100°F
July 28, 2006
+10° from 90° normal❄ Record Low
43°F
July 28, 1971
-12° from 55° normal
🌞 Normal high: 90°F 🌑 Normal low: 55°F 1991–2020 normals
All-Time Records — Casper
104°F
Hottest Day Ever
Jul 29, 2006
-42°F
Coldest Day Ever
Dec 22, 2022
2.80"
Wettest Day Ever
Apr 13, 1941
26.7"
Most Snow in One Day
Apr 3, 2023
Top 10 Record Highs — July 28
| # | Temp | Date |
|---|---|---|
| 🏆 | 100°F | July 28, 2006 |
| 2 | 97°F | July 28, 1999 |
| 3 | 97°F | July 28, 1995 |
| 4 | 97°F | July 28, 1994 |
| 5 | 97°F | July 28, 1959 |
| 6 | 97°F | July 28, 1947 |
| 7 | 96°F | July 28, 1987 |
| 8 | 96°F | July 28, 1969 |
| 9 | 95°F | July 28, 2021 |
| 10 | 95°F | July 28, 2012 |
Top 5 Record Lows — July 28
| # | Temp | Date |
|---|---|---|
| 🥶 | 43°F | July 28, 1971 |
| 2 | 44°F | July 28, 2015 |
| 3 | 46°F | July 28, 1993 |
| 4 | 46°F | July 28, 1981 |
| 5 | 46°F | July 28, 1949 |
Heat Wave Summary — Casper
threshold: 94°F (90th percentile of historical Jun–Aug highs)4.1
Avg heat wave length
days (historical)
98°
Avg peak temp
during heat waves
0
Dangerous nights 2026
Overnights ≥ 70°F
3
Heat waves 2026
so far
2026 Daily High Temperature vs Normal
Year to date
Above normal
Below normal
150 of 207 days with data were above the 1991–2020 normal high for their date.
Days ≥ 90°F Per Year
1940–202629
2026 so far
32
Avg/year 1970–2025
42
Avg/year (last 10 complete)
57
Most in a year (1988)
Average Daily High by Decade
Full year · complete decades only
Longest Heat Waves — Casper
| # | Dates | Days | Peak | Avg High | Avg Overnight Low |
|---|---|---|---|---|---|
| 🏆 | Jul 10, 2026 – Jul 20, 2026 | 11 | 103°F (Jul 12) | 98°F | 57°F |
| 2 | Jul 15, 2007 – Jul 25, 2007 | 11 | 99°F (Jul 17) | 96°F | 59°F |
| 3 | Jun 23, 1990 – Jul 2, 1990 | 10 | 102°F (Jun 30) | 99°F | 57°F |
| 4 | Jun 25, 2002 – Jul 3, 2002 | 9 | 100°F (Jun 30) | 96°F | 53°F |
| 5 | Aug 6, 2003 – Aug 14, 2003 | 9 | 99°F (Aug 14) | 97°F | 60°F |
| 6 | Jun 20, 1988 – Jun 27, 1988 | 8 | 102°F (Jun 24) | 98°F | 65°F |
| 7 | Jul 3, 1989 – Jul 9, 1989 | 7 | 102°F (Jul 8) | 98°F | 58°F |
| 8 | Aug 2, 2001 – Aug 8, 2001 | 7 | 101°F (Aug 6) | 97°F | 62°F |
| 9 | Jul 19, 2014 – Jul 25, 2014 | 7 | 100°F (Jul 23) | 96°F | 55°F |
| 10 | Jul 19, 2005 – Jul 24, 2005 | 6 | 103°F (Jul 22) | 98°F | 58°F |
Heat Waves Per Year
Warm Summer Nights (Jun–Aug)
Nights where the overnight low exceeded the 1991–2020 normal low
31
2026 so far
above-normal nights
47.3
Avg / summer
1970–2020
77
Most in a summer
1961
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
4.32"
2026 YTD
Normal: 7.86"
-3.54"
0.12"
July so far
July normal: 1.19"
-1.07"
0.67"
Summer so far
Summer normal: 3.32"
-2.65"
0
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")