Dillon Weather in July
Average highs run from 78°F on July 1 to 85°F on July 31, and lows from 45°F to 48°F. Normal precipitation for the month is 0.91 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
- 83°F
- Average low
- 48°F
- Precipitation
- 0.91 in
- Record high
- 102°FJul 12, 2002
- Record low
- 32°FJul 8, 1981
- Chance of a freeze
- 5%
- Days of 90°F or more
- 8.0
- Daylight
- 15 h 35 min to 14 h 45 min
- Cloud cover
- 41%
- Humidity
- 52%
- Dew point
- 41°F
- Wind
- 6.0 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 | 78°F | 45°F | 93°F 2015 | 36°F 1945 | 25% | 0% |
| Jul 2 | 79°F | 45°F | 94°F 1986 | 33°F 1955 | 25% | 0% |
| Jul 3 | 79°F | 46°F | 95°F 1961 | 37°F 2018 | 24% | 0% |
| Jul 4 | 80°F | 46°F | 96°F 2008 | 35°F 1983 | 24% | 0% |
| Jul 5 | 80°F | 46°F | 98°F 1985 | 37°F 1999 | 23% | 0% |
| Jul 6 | 81°F | 46°F | 97°F 2007 | 33°F 1986 | 23% | 0% |
| Jul 7 | 81°F | 46°F | 97°F 1985 | 34°F 1977 | 23% | 0% |
| Jul 8 | 81°F | 47°F | 95°F 2017 | 32°F 1981 | 22% | 0% |
| Jul 9 | 82°F | 47°F | 92°F 1956 | 36°F 2009 | 22% | 0% |
| Jul 10 | 82°F | 47°F | 95°F 1973 | 39°F 1946 | 22% | 0% |
| Jul 11 | 82°F | 47°F | 99°F 2002 | 37°F 1951 | 22% | 0% |
| Jul 12 | 83°F | 48°F | 102°F 2002 | 36°F 1950 | 21% | 0% |
| Jul 13 | 83°F | 48°F | 99°F 2002 | 37°F 1943 | 21% | 0% |
| Jul 14 | 83°F | 48°F | 95°F 1951 | 37°F 1980 | 21% | 0% |
| Jul 15 | 84°F | 48°F | 95°F 1949 | 36°F 1958 | 21% | 0% |
| Jul 16 | 84°F | 48°F | 96°F 1955 | 34°F 1999 | 20% | 0% |
| Jul 17 | 84°F | 48°F | 97°F 1966 | 37°F 1986 | 20% | 0% |
| Jul 18 | 84°F | 48°F | 99°F 1951 | 39°F 1950 | 20% | 0% |
| Jul 19 | 84°F | 49°F | 99°F 1960 | 37°F 1980 | 20% | 0% |
| Jul 20 | 85°F | 49°F | 101°F 1960 | 38°F 1987 | 20% | 0% |
| Jul 21 | 85°F | 49°F | 97°F 1960 | 37°F 1949 | 20% | 0% |
| Jul 22 | 85°F | 49°F | 98°F 2006 | 37°F 1954 | 20% | 0% |
| Jul 23 | 85°F | 49°F | 99°F 2003 | 39°F 2011 | 20% | 0% |
| Jul 24 | 85°F | 49°F | 95°F 1966 | 41°F 1942 | 19% | 0% |
| Jul 25 | 85°F | 49°F | 95°F 1945 | 37°F 1948 | 19% | 0% |
| Jul 26 | 85°F | 49°F | 94°F 1988 | 39°F 2005 | 19% | 0% |
| Jul 27 | 85°F | 49°F | 95°F 1943 | 39°F 1963 | 19% | 0% |
| Jul 28 | 85°F | 49°F | 95°F 2006 | 33°F 1949 | 19% | 0% |
| Jul 29 | 85°F | 49°F | 98°F 1972 | 37°F 1959 | 19% | 0% |
| Jul 30 | 85°F | 49°F | 98°F 1988 | 41°F 1950 | 19% | 0% |
| Jul 31 | 85°F | 48°F | 96°F 1943 | 38°F 1968 | 19% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 5:47 AM, sunset 9:22 PM
- July 31
- sunrise 6:14 AM, sunset 8:59 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00242409 (Dillon U Of Montana Western), public domain. Records: NOAA GHCN-Daily, station USW00024138, 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.