Custer County Weather in July
Average highs run from 87°F on July 1 to 94°F on July 31, and lows from 53°F to 57°F. Normal precipitation for the month is 1.78 in over about 8 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
- 91°F
- Average low
- 56°F
- Precipitation
- 1.78 in
- Record high
- 115°FJul 12, 2026
- Record low
- 41°FJul 1, 1945
- Chance of a freeze
- 0%
- Days of 90°F or more
- 18.1
- Daylight
- 15 h 43 min to 14 h 51 min
- Cloud cover
- 46%
- Humidity
- 47%
- Dew point
- 51°F
- Wind
- 9.4 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 | 87°F | 53°F | 105°F 2012 | 41°F 1945 | 31% | 0% |
| Jul 2 | 87°F | 53°F | 104°F 1990 | 46°F 1967 | 31% | 0% |
| Jul 3 | 88°F | 54°F | 105°F 2021 | 44°F 1972 | 31% | 0% |
| Jul 4 | 88°F | 54°F | 104°F 1937 | 44°F 1972 | 30% | 0% |
| Jul 5 | 88°F | 54°F | 109°F 1937 | 46°F 2023 | 30% | 0% |
| Jul 6 | 89°F | 54°F | 106°F 1937 | 44°F 1958 | 30% | 0% |
| Jul 7 | 89°F | 54°F | 102°F 1983 | 42°F 1952 | 29% | 0% |
| Jul 8 | 89°F | 55°F | 107°F 1983 | 46°F 1996 | 29% | 0% |
| Jul 9 | 90°F | 55°F | 104°F 1940 | 49°F 1944 | 28% | 0% |
| Jul 10 | 90°F | 55°F | 105°F 1939 | 45°F 1951 | 28% | 0% |
| Jul 11 | 90°F | 55°F | 104°F 2026 | 42°F 1951 | 27% | 0% |
| Jul 12 | 91°F | 55°F | 115°F 2026 | 44°F 1987 | 27% | 0% |
| Jul 13 | 91°F | 56°F | 106°F 2005 | 46°F 1943 | 27% | 0% |
| Jul 14 | 91°F | 56°F | 110°F 2002 | 48°F 1977 | 26% | 0% |
| Jul 15 | 92°F | 56°F | 103°F 2002 | 47°F 2020 | 26% | 0% |
| Jul 16 | 92°F | 56°F | 108°F 1966 | 45°F 1999 | 26% | 0% |
| Jul 17 | 92°F | 56°F | 106°F 2022 | 48°F 1950 | 25% | 0% |
| Jul 18 | 92°F | 56°F | 107°F 2004 | 48°F 1968 | 25% | 0% |
| Jul 19 | 93°F | 56°F | 108°F 1960 | 44°F 1948 | 25% | 0% |
| Jul 20 | 93°F | 57°F | 109°F 1960 | 47°F 1972 | 24% | 0% |
| Jul 21 | 93°F | 57°F | 105°F 1964 | 50°F 1950 | 24% | 0% |
| Jul 22 | 93°F | 57°F | 107°F 2007 | 52°F 1953 | 23% | 0% |
| Jul 23 | 93°F | 57°F | 110°F 2007 | 49°F 1950 | 23% | 0% |
| Jul 24 | 93°F | 57°F | 110°F 2007 | 52°F 1991 | 23% | 0% |
| Jul 25 | 94°F | 57°F | 107°F 2026 | 51°F 1973 | 22% | 0% |
| Jul 26 | 94°F | 57°F | 104°F 1939 | 47°F 1971 | 22% | 0% |
| Jul 27 | 94°F | 57°F | 108°F 2021 | 51°F 1969 | 22% | 0% |
| Jul 28 | 94°F | 57°F | 108°F 1947 | 52°F 1940 | 22% | 0% |
| Jul 29 | 94°F | 57°F | 106°F 1995 | 48°F 1948 | 21% | 0% |
| Jul 30 | 94°F | 57°F | 106°F 2000 | 46°F 2009 | 21% | 0% |
| Jul 31 | 94°F | 57°F | 105°F 2007 | 47°F 1995 | 21% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 5:15 AM, sunset 8:58 PM
- July 31
- sunrise 5:43 AM, sunset 8:34 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00245754 (Mizpah 4 Nnw), public domain. Records: NOAA GHCN-Daily, station USW00024037, 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 2026-09-25. Sun and moon: computed with the NOAA solar equations and Meeus.