Casper Weather in July
Average highs run from 85°F on July 1 to 90°F on July 31, and lows from 53°F to 59°F. Normal precipitation for the month is 1.21 in over about 6 wet days.
July day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
July at a glance
- Average high
- 88°F
- Average low
- 56°F
- Precipitation
- 1.21 in
- Record high
- 104°FJul 12, 1954
- Record low
- 30°FJul 4, 1972
- Chance of a freeze
- 0%
- Days of 90°F or more
- 16.4
- Daylight
- 15 h 17 min to 14 h 31 min
- Cloud cover
- 43%
- Humidity
- 41%
- Dew point
- 45°F
- Wind
- 8.7 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Jul 1 | 85°F | 53°F | 100°F 2012 | 37°F 1968 | 21% | 0% |
| Jul 2 | 85°F | 53°F | 101°F 1990 | 34°F 1997 | 21% | 0% |
| Jul 3 | 86°F | 53°F | 99°F 2012 | 33°F 1972 | 21% | 0% |
| Jul 4 | 86°F | 54°F | 100°F 1989 | 30°F 1972 | 21% | 0% |
| Jul 5 | 86°F | 54°F | 99°F 2001 | 38°F 1972 | 21% | 0% |
| Jul 6 | 87°F | 54°F | 101°F 1981 | 41°F 2004 | 21% | 0% |
| Jul 7 | 87°F | 54°F | 101°F 1989 | 39°F 1993 | 21% | 0% |
| Jul 8 | 87°F | 55°F | 102°F 1989 | 38°F 2010 | 21% | 0% |
| Jul 9 | 87°F | 55°F | 100°F 2025 | 40°F 1959 | 21% | 0% |
| Jul 10 | 88°F | 55°F | 101°F 1954 | 39°F 2019 | 20% | 0% |
| Jul 11 | 88°F | 56°F | 103°F 1954 | 39°F 1983 | 20% | 0% |
| Jul 12 | 88°F | 56°F | 104°F 1954 | 38°F 2008 | 20% | 0% |
| Jul 13 | 88°F | 56°F | 103°F 2005 | 37°F 2008 | 20% | 0% |
| Jul 14 | 89°F | 56°F | 101°F 1983 | 41°F 1952 | 20% | 0% |
| Jul 15 | 89°F | 57°F | 102°F 2006 | 42°F 2009 | 20% | 0% |
| Jul 16 | 89°F | 57°F | 104°F 2005 | 43°F 1983 | 20% | 0% |
| Jul 17 | 89°F | 57°F | 101°F 2023 | 43°F 1982 | 20% | 0% |
| Jul 18 | 89°F | 57°F | 103°F 1998 | 44°F 1949 | 20% | 0% |
| Jul 19 | 89°F | 58°F | 101°F 1998 | 45°F 1972 | 20% | 0% |
| Jul 20 | 89°F | 58°F | 99°F 2005 | 43°F 1972 | 20% | 0% |
| Jul 21 | 90°F | 58°F | 100°F 1982 | 39°F 1949 | 20% | 0% |
| Jul 22 | 90°F | 58°F | 103°F 2005 | 44°F 1978 | 20% | 0% |
| Jul 23 | 90°F | 58°F | 100°F 2000 | 43°F 1972 | 20% | 0% |
| Jul 24 | 90°F | 58°F | 100°F 1959 | 45°F 2010 | 20% | 0% |
| Jul 25 | 90°F | 58°F | 102°F 2026 | 46°F 2004 | 20% | 0% |
| Jul 26 | 90°F | 59°F | 102°F 2026 | 40°F 1971 | 20% | 0% |
| Jul 27 | 90°F | 59°F | 100°F 2021 | 45°F 2005 | 20% | 0% |
| Jul 28 | 90°F | 59°F | 100°F 2006 | 43°F 1971 | 20% | 0% |
| Jul 29 | 90°F | 59°F | 104°F 2006 | 36°F 2015 | 20% | 0% |
| Jul 30 | 90°F | 59°F | 101°F 2006 | 38°F 1971 | 20% | 0% |
| Jul 31 | 90°F | 59°F | 99°F 1988 | 42°F 1968 | 20% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 5:31 AM, sunset 8:48 PM
- July 31
- sunrise 5:56 AM, sunset 8:27 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00481569 (Casper Wwtp), public domain. Records: NOAA GHCN-Daily, station USW00024089, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.