Boise County Weather in July
Average highs run from 82°F on July 1 to 90°F on July 31, and lows from 43°F to 47°F. Normal precipitation for the month is 0.32 in over about 3 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
- 87°F
- Average low
- 46°F
- Precipitation
- 0.32 in
- Record high
- 111°FJul 19, 1960
- Record low
- 35°FJul 5, 1986
- Chance of a freeze
- 15%
- Days of 90°F or more
- 13.4
- Daylight
- 15 h 25 min to 14 h 38 min
- Cloud cover
- 36%
- Humidity
- 43%
- Dew point
- 40°F
- Wind
- 4.5 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 | 82°F | 43°F | 110°F 2013 | 44°F 1956 | 13% | 0% |
| Jul 2 | 82°F | 43°F | 105°F 2013 | 41°F 1955 | 12% | 0% |
| Jul 3 | 83°F | 44°F | 106°F 2001 | 40°F 1983 | 12% | 0% |
| Jul 4 | 83°F | 44°F | 105°F 2001 | 43°F 1959 | 12% | 0% |
| Jul 5 | 84°F | 44°F | 104°F 2007 | 35°F 1986 | 11% | 0% |
| Jul 6 | 84°F | 44°F | 107°F 2021 | 41°F 1986 | 11% | 0% |
| Jul 7 | 85°F | 44°F | 108°F 1989 | 41°F 1955 | 11% | 0% |
| Jul 8 | 85°F | 45°F | 104°F 2017 | 40°F 1981 | 10% | 0% |
| Jul 9 | 85°F | 45°F | 108°F 2012 | 48°F 1944 | 10% | 0% |
| Jul 10 | 86°F | 45°F | 108°F 2024 | 48°F 1977 | 10% | 0% |
| Jul 11 | 86°F | 45°F | 109°F 2002 | 44°F 1987 | 10% | 0% |
| Jul 12 | 87°F | 45°F | 108°F 2002 | 45°F 1943 | 9% | 0% |
| Jul 13 | 87°F | 46°F | 110°F 2002 | 43°F 1993 | 9% | 0% |
| Jul 14 | 87°F | 46°F | 105°F 2007 | 44°F 1981 | 9% | 0% |
| Jul 15 | 88°F | 46°F | 105°F 2005 | 43°F 1983 | 9% | 0% |
| Jul 16 | 88°F | 46°F | 105°F 2023 | 42°F 1993 | 9% | 0% |
| Jul 17 | 88°F | 46°F | 108°F 1998 | 42°F 1986 | 9% | 0% |
| Jul 18 | 88°F | 46°F | 106°F 2009 | 42°F 1993 | 9% | 0% |
| Jul 19 | 89°F | 46°F | 111°F 1960 | 46°F 1987 | 8% | 0% |
| Jul 20 | 89°F | 47°F | 104°F 2026 | 43°F 1972 | 8% | 0% |
| Jul 21 | 89°F | 47°F | 108°F 2024 | 46°F 1954 | 8% | 0% |
| Jul 22 | 89°F | 47°F | 108°F 2003 | 44°F 1954 | 8% | 0% |
| Jul 23 | 89°F | 47°F | 107°F 2003 | 46°F 1965 | 8% | 0% |
| Jul 24 | 90°F | 47°F | 107°F 2024 | 46°F 1993 | 8% | 0% |
| Jul 25 | 90°F | 47°F | 104°F 1984 | 46°F 1993 | 8% | 0% |
| Jul 26 | 90°F | 47°F | 105°F 1978 | 48°F 1969 | 8% | 0% |
| Jul 27 | 90°F | 47°F | 108°F 1975 | 50°F 1948 | 8% | 0% |
| Jul 28 | 90°F | 47°F | 105°F 1967 | 45°F 1948 | 8% | 0% |
| Jul 29 | 90°F | 47°F | 104°F 2022 | 44°F 1950 | 8% | 0% |
| Jul 30 | 90°F | 47°F | 106°F 2003 | 46°F 1950 | 8% | 0% |
| Jul 31 | 90°F | 47°F | 106°F 1992 | 44°F 1975 | 8% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- July 1
- sunrise 6:04 AM, sunset 9:29 PM
- July 31
- sunrise 6:30 AM, sunset 9:08 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00104442 (Idaho City), public domain. Records: NOAA GHCN-Daily, station USW00024131, 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.