Dewey County Weather in July
Average highs run from 83°F on July 1 to 87°F on July 31, and lows from 58°F to 60°F. Normal precipitation for the month is 2.85 in over about 9 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
- 86°F
- Average low
- 59°F
- Precipitation
- 2.85 in
- Record high
- 116°FJul 15, 2006
- Record low
- 44°FJul 17, 2025
- Chance of a freeze
- 0%
- Days of 90°F or more
- 9.4
- Daylight
- 15 h 35 min to 14 h 45 min
- Cloud cover
- 47%
- Humidity
- 55%
- Dew point
- 56°F
- Wind
- 9.8 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 | 83°F | 58°F | 96°F 2003 | 47°F 2005 | 32% | 0% |
| Jul 2 | 83°F | 58°F | 98°F 2003 | 45°F 2014 | 32% | 0% |
| Jul 3 | 84°F | 58°F | 104°F 2021 | 47°F 2008 | 32% | 0% |
| Jul 4 | 84°F | 58°F | 101°F 2017 | 52°F 2005 | 32% | 0% |
| Jul 5 | 84°F | 58°F | 105°F 2017 | 48°F 2023 | 31% | 0% |
| Jul 6 | 84°F | 58°F | 97°F 2002 | 48°F 1999 | 31% | 0% |
| Jul 7 | 85°F | 59°F | 108°F 2007 | 50°F 2003 | 31% | 0% |
| Jul 8 | 85°F | 59°F | 99°F 2006 | 50°F 2023 | 30% | 0% |
| Jul 9 | 85°F | 59°F | 106°F 2017 | 49°F 2008 | 30% | 0% |
| Jul 10 | 85°F | 59°F | 100°F 2005 | 50°F 1999 | 30% | 0% |
| Jul 11 | 86°F | 59°F | 101°F 2017 | 46°F 2007 | 30% | 0% |
| Jul 12 | 86°F | 59°F | 102°F 2006 | 50°F 2025 | 29% | 0% |
| Jul 13 | 86°F | 59°F | 100°F 2026 | 46°F 2008 | 29% | 0% |
| Jul 14 | 86°F | 60°F | 104°F 2006 | 50°F 2014 | 29% | 0% |
| Jul 15 | 86°F | 60°F | 116°F 2006 | 48°F 2014 | 29% | 0% |
| Jul 16 | 86°F | 60°F | 113°F 2006 | 48°F 2009 | 28% | 0% |
| Jul 17 | 87°F | 60°F | 101°F 2017 | 44°F 2025 | 28% | 0% |
| Jul 18 | 87°F | 60°F | 101°F 1998 | 49°F 2009 | 28% | 0% |
| Jul 19 | 87°F | 60°F | 103°F 2005 | 53°F 2015 | 28% | 0% |
| Jul 20 | 87°F | 60°F | 105°F 2016 | 50°F 2000 | 28% | 0% |
| Jul 21 | 87°F | 60°F | 105°F 2007 | 50°F 2009 | 28% | 0% |
| Jul 22 | 87°F | 60°F | 105°F 2007 | 48°F 2009 | 27% | 0% |
| Jul 23 | 87°F | 60°F | 107°F 2007 | 49°F 1998 | 27% | 0% |
| Jul 24 | 87°F | 60°F | 101°F 2007 | 47°F 2004 | 27% | 0% |
| Jul 25 | 87°F | 60°F | 105°F 2007 | 51°F 2004 | 27% | 0% |
| Jul 26 | 87°F | 60°F | 103°F 2026 | 51°F 2018 | 27% | 0% |
| Jul 27 | 87°F | 60°F | 101°F 2021 | 48°F 2013 | 27% | 0% |
| Jul 28 | 87°F | 60°F | 111°F 2006 | 47°F 2013 | 27% | 0% |
| Jul 29 | 87°F | 60°F | 106°F 1999 | 44°F 2004 | 26% | 0% |
| Jul 30 | 87°F | 60°F | 112°F 2006 | 49°F 2004 | 26% | 0% |
| Jul 31 | 87°F | 60°F | 99°F 2007 | 51°F 2009 | 26% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 5:00 AM, sunset 8:35 PM
- July 31
- sunrise 5:27 AM, sunset 8:12 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00398307 (Timber Lake), public domain. Records: NOAA GHCN-Daily, station USW00094052, 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.