Sun Valley Weather in October
Average highs run from 75°F on October 1 to 62°F on October 31, and lows from 48°F to 38°F. Normal precipitation for the month is 0.61 in over about 4 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
- 68°F
- Average low
- 43°F
- Precipitation
- 0.61 in
- Snowfall
- 0.1 in
- Record high
- 92°FOct 1, 2010
- Record low
- 9°FOct 30, 2019
- Chance of a freeze
- 62%
- Daylight
- 11 h 46 min to 10 h 31 min
- Cloud cover
- 35%
- Humidity
- 47%
- Dew point
- 26°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 |
|---|---|---|---|---|---|---|
| Oct 1 | 75°F | 48°F | 92°F 2010 | 29°F 2019 | 9% | 1% |
| Oct 2 | 75°F | 48°F | 87°F 2012 | 26°F 2019 | 9% | 1% |
| Oct 3 | 74°F | 47°F | 92°F 2024 | 29°F 2002 | 9% | 1% |
| Oct 4 | 74°F | 47°F | 89°F 2024 | 27°F 2009 | 9% | 1% |
| Oct 5 | 73°F | 46°F | 87°F 2020 | 21°F 2009 | 10% | 1% |
| Oct 6 | 73°F | 46°F | 84°F 1985 | 26°F 2007 | 10% | 1% |
| Oct 7 | 72°F | 46°F | 84°F 1996 | 26°F 2007 | 10% | 1% |
| Oct 8 | 72°F | 45°F | 86°F 1996 | 28°F 1990 | 10% | 1% |
| Oct 9 | 71°F | 45°F | 88°F 1996 | 14°F 1985 | 10% | 1% |
| Oct 10 | 71°F | 45°F | 83°F 1996 | 16°F 1985 | 10% | 1% |
| Oct 11 | 70°F | 44°F | 84°F 2024 | 28°F 1986 | 10% | 1% |
| Oct 12 | 70°F | 44°F | 84°F 1992 | 24°F 2008 | 10% | 1% |
| Oct 13 | 70°F | 44°F | 87°F 2015 | 20°F 2008 | 10% | 1% |
| Oct 14 | 69°F | 43°F | 84°F 2015 | 23°F 1985 | 10% | 1% |
| Oct 15 | 69°F | 43°F | 83°F 1991 | 25°F 2013 | 10% | 1% |
| Oct 16 | 68°F | 43°F | 81°F 2001 | 25°F 2013 | 11% | 1% |
| Oct 17 | 68°F | 42°F | 81°F 2003 | 24°F 1994 | 11% | 1% |
| Oct 18 | 67°F | 42°F | 83°F 1988 | 27°F 1998 | 11% | 1% |
| Oct 19 | 67°F | 42°F | 79°F 2003 | 24°F 2021 | 11% | 1% |
| Oct 20 | 66°F | 41°F | 83°F 2003 | 19°F 1996 | 11% | 1% |
| Oct 21 | 66°F | 41°F | 82°F 2003 | 19°F 1996 | 11% | 1% |
| Oct 22 | 66°F | 41°F | 81°F 2003 | 21°F 1996 | 11% | 1% |
| Oct 23 | 65°F | 40°F | 77°F 2009 | 25°F 2000 | 12% | 1% |
| Oct 24 | 65°F | 40°F | 82°F 2007 | 23°F 2022 | 12% | 2% |
| Oct 25 | 64°F | 40°F | 77°F 2007 | 21°F 1989 | 12% | 2% |
| Oct 26 | 64°F | 39°F | 77°F 1988 | 20°F 2020 | 12% | 2% |
| Oct 27 | 63°F | 39°F | 76°F 1990 | 20°F 1989 | 12% | 2% |
| Oct 28 | 63°F | 39°F | 78°F 2003 | 15°F 2019 | 13% | 2% |
| Oct 29 | 62°F | 38°F | 73°F 2008 | 18°F 1989 | 13% | 2% |
| Oct 30 | 62°F | 38°F | 80°F 2017 | 9°F 2019 | 13% | 2% |
| Oct 31 | 62°F | 38°F | 76°F 2012 | 11°F 2019 | 13% | 2% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PDT).
- October 1
- sunrise 6:55 AM, sunset 6:41 PM
- October 31
- sunrise 7:27 AM, sunset 5:58 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00266791 (Reno WFO), public domain. Records: NOAA GHCN-Daily, station USC00267820, 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.