Big Sky Weather in July
Average highs run from 73°F on July 1 to 80°F on July 31, and lows from 39°F to 42°F. Normal precipitation for the month is 1.25 in over about 10 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
- 78°F
- Average low
- 41°F
- Precipitation
- 1.25 in
- Record high
- 101°FJul 13, 2026
- Record low
- 29°FJul 12, 2008
- Chance of a freeze
- 47%
- Days of 90°F or more
- 1.0
- Daylight
- 15 h 35 min to 14 h 45 min
- Cloud cover
- 45%
- Humidity
- 56%
- Dew point
- 43°F
- Wind
- 4.7 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 | 73°F | 39°F | 94°F 2008 | 32°F 1935 | 38% | 0% |
| Jul 2 | 73°F | 39°F | 95°F 2025 | 32°F 1921 | 38% | 0% |
| Jul 3 | 74°F | 39°F | 95°F 1922 | 32°F 1921 | 37% | 0% |
| Jul 4 | 74°F | 40°F | 96°F 2021 | 31°F 2018 | 37% | 0% |
| Jul 5 | 74°F | 40°F | 97°F 1919 | 32°F 1932 | 36% | 0% |
| Jul 6 | 75°F | 40°F | 96°F 2007 | 34°F 1986 | 36% | 0% |
| Jul 7 | 75°F | 40°F | 99°F 2007 | 32°F 1931 | 36% | 0% |
| Jul 8 | 76°F | 40°F | 96°F 1919 | 31°F 1981 | 35% | 0% |
| Jul 9 | 76°F | 41°F | 97°F 1919 | 31°F 2009 | 35% | 0% |
| Jul 10 | 77°F | 41°F | 99°F 1919 | 36°F 2009 | 35% | 0% |
| Jul 11 | 77°F | 41°F | 100°F 1919 | 35°F 1935 | 35% | 0% |
| Jul 12 | 77°F | 41°F | 98°F 2002 | 29°F 2008 | 35% | 0% |
| Jul 13 | 78°F | 41°F | 101°F 2026 | 33°F 1943 | 34% | 0% |
| Jul 14 | 78°F | 42°F | 99°F 2005 | 34°F 2020 | 34% | 0% |
| Jul 15 | 78°F | 42°F | 98°F 1919 | 34°F 2020 | 34% | 0% |
| Jul 16 | 78°F | 42°F | 97°F 1919 | 35°F 1927 | 34% | 0% |
| Jul 17 | 79°F | 42°F | 98°F 2024 | 37°F 1943 | 34% | 0% |
| Jul 18 | 79°F | 42°F | 96°F 1951 | 36°F 1993 | 34% | 0% |
| Jul 19 | 79°F | 42°F | 96°F 1921 | 37°F 1919 | 34% | 0% |
| Jul 20 | 79°F | 42°F | 99°F 1921 | 35°F 1924 | 34% | 0% |
| Jul 21 | 79°F | 42°F | 97°F 1931 | 33°F 1939 | 34% | 0% |
| Jul 22 | 80°F | 42°F | 97°F 2003 | 36°F 1954 | 34% | 0% |
| Jul 23 | 80°F | 42°F | 98°F 2003 | 38°F 1926 | 34% | 0% |
| Jul 24 | 80°F | 42°F | 97°F 2006 | 39°F 2016 | 34% | 0% |
| Jul 25 | 80°F | 42°F | 97°F 2026 | 35°F 2014 | 34% | 0% |
| Jul 26 | 80°F | 42°F | 95°F 1931 | 35°F 2005 | 34% | 0% |
| Jul 27 | 80°F | 42°F | 94°F 1920 | 37°F 2005 | 34% | 0% |
| Jul 28 | 80°F | 42°F | 96°F 2006 | 34°F 1940 | 34% | 0% |
| Jul 29 | 80°F | 42°F | 96°F 1988 | 36°F 1976 | 34% | 0% |
| Jul 30 | 80°F | 42°F | 96°F 1988 | 35°F 2009 | 34% | 0% |
| Jul 31 | 80°F | 42°F | 95°F 2000 | 36°F 1968 | 35% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 5:42 AM, sunset 9:17 PM
- July 31
- sunrise 6:09 AM, sunset 8:54 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00240775 (Big Sky 2WNW), public domain. Records: NOAA GHCN-Daily, station USC00242793, 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.