Boise County Weather in October
Average highs run from 70°F on October 1 to 53°F on October 31, and lows from 31°F to 24°F. Normal precipitation for the month is 1.50 in over about 6 wet days.
October day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 62°F
- Average low
- 28°F
- Precipitation
- 1.50 in
- Snowfall
- 1.5 in
- Record high
- 94°FOct 1, 1992
- Record low
- 11°FOct 29, 1971
- Chance of a freeze
- 100%
- Daylight
- 11 h 42 min to 10 h 16 min
- Cloud cover
- 57%
- Humidity
- 57%
- Dew point
- 26°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 |
|---|---|---|---|---|---|---|
| Oct 1 | 70°F | 31°F | 94°F 1992 | 29°F 1950 | 14% | 1% |
| Oct 2 | 70°F | 31°F | 90°F 1962 | 28°F 1959 | 14% | 1% |
| Oct 3 | 69°F | 31°F | 91°F 1963 | 29°F 1973 | 14% | 1% |
| Oct 4 | 69°F | 31°F | 88°F 1947 | 26°F 1981 | 15% | 1% |
| Oct 5 | 68°F | 30°F | 85°F 1975 | 24°F 1974 | 15% | 1% |
| Oct 6 | 67°F | 30°F | 87°F 1988 | 26°F 1941 | 15% | 2% |
| Oct 7 | 67°F | 30°F | 86°F 1980 | 24°F 1990 | 15% | 2% |
| Oct 8 | 66°F | 29°F | 87°F 2004 | 27°F 1961 | 16% | 2% |
| Oct 9 | 66°F | 29°F | 90°F 2015 | 18°F 1985 | 16% | 2% |
| Oct 10 | 65°F | 29°F | 90°F 2015 | 23°F 2019 | 16% | 2% |
| Oct 11 | 65°F | 29°F | 87°F 1950 | 22°F 1990 | 17% | 2% |
| Oct 12 | 64°F | 28°F | 82°F 1944 | 30°F 1985 | 17% | 3% |
| Oct 13 | 63°F | 28°F | 88°F 1950 | 20°F 1985 | 17% | 3% |
| Oct 14 | 63°F | 28°F | 86°F 2005 | 21°F 1966 | 18% | 3% |
| Oct 15 | 62°F | 28°F | 87°F 1991 | 21°F 1992 | 18% | 3% |
| Oct 16 | 62°F | 27°F | 83°F 1991 | 22°F 1984 | 18% | 4% |
| Oct 17 | 61°F | 27°F | 79°F 1963 | 26°F 1998 | 19% | 4% |
| Oct 18 | 60°F | 27°F | 82°F 2003 | 22°F 1984 | 19% | 4% |
| Oct 19 | 60°F | 27°F | 81°F 2003 | 24°F 1949 | 20% | 5% |
| Oct 20 | 59°F | 26°F | 84°F 2003 | 20°F 1990 | 20% | 5% |
| Oct 21 | 59°F | 26°F | 84°F 2003 | 23°F 1996 | 20% | 5% |
| Oct 22 | 58°F | 26°F | 80°F 2003 | 20°F 1980 | 21% | 6% |
| Oct 23 | 57°F | 26°F | 79°F 1948 | 20°F 1945 | 21% | 6% |
| Oct 24 | 57°F | 26°F | 76°F 2007 | 23°F 1975 | 22% | 7% |
| Oct 25 | 56°F | 25°F | 81°F 1990 | 23°F 1954 | 22% | 7% |
| Oct 26 | 56°F | 25°F | 77°F 1986 | 17°F 2020 | 23% | 8% |
| Oct 27 | 55°F | 25°F | 81°F 1990 | 22°F 1948 | 23% | 8% |
| Oct 28 | 54°F | 25°F | 78°F 1990 | 21°F 1942 | 24% | 8% |
| Oct 29 | 54°F | 25°F | 77°F 1968 | 11°F 1971 | 24% | 9% |
| Oct 30 | 53°F | 24°F | 75°F 2014 | 16°F 1991 | 25% | 10% |
| Oct 31 | 53°F | 24°F | 74°F 2012 | 13°F 2002 | 25% | 10% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MDT).
- October 1
- sunrise 7:41 AM, sunset 7:23 PM
- October 31
- sunrise 8:18 AM, sunset 6:34 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.