Sun Valley Weather in January
Average highs run from 45°F on January 1 to 47°F on January 31, and lows from 27°F to 28°F. Normal precipitation for the month is 1.27 in over about 7 wet days.
January day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
January at a glance
- Average high
- 46°F
- Average low
- 27°F
- Precipitation
- 1.27 in
- Snowfall
- 7.0 in
- Record high
- 69°FJan 31, 2003
- Record low
- -10°FJan 3, 1993
- Chance of a freeze
- 100%
- Daylight
- 9 h 26 min to 10 h 11 min
- Cloud cover
- 58%
- Humidity
- 77%
- Dew point
- 23°F
- Wind
- 6.3 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 |
|---|---|---|---|---|---|---|
| Jan 1 | 45°F | 27°F | 58°F 1998 | 3°F 1991 | 23% | 14% |
| Jan 2 | 45°F | 27°F | 65°F 2012 | 2°F 2013 | 23% | 14% |
| Jan 3 | 45°F | 27°F | 64°F 2012 | -10°F 1993 | 22% | 14% |
| Jan 4 | 45°F | 27°F | 65°F 2012 | 2°F 2004 | 22% | 14% |
| Jan 5 | 45°F | 27°F | 65°F 2012 | 4°F 1993 | 22% | 13% |
| Jan 6 | 45°F | 27°F | 65°F 2012 | 6°F 1991 | 22% | 13% |
| Jan 7 | 45°F | 27°F | 65°F 1996 | 3°F 1989 | 22% | 13% |
| Jan 8 | 45°F | 27°F | 63°F 1996 | 6°F 2011 | 22% | 13% |
| Jan 9 | 45°F | 27°F | 65°F 1990 | 8°F 2011 | 22% | 13% |
| Jan 10 | 45°F | 27°F | 64°F 1990 | 8°F 1987 | 22% | 13% |
| Jan 11 | 45°F | 27°F | 61°F 1986 | -3°F 1993 | 22% | 13% |
| Jan 12 | 46°F | 27°F | 59°F 2002 | -6°F 1993 | 22% | 13% |
| Jan 13 | 46°F | 27°F | 61°F 1996 | -8°F 1997 | 22% | 13% |
| Jan 14 | 46°F | 27°F | 63°F 1996 | -4°F 1997 | 22% | 13% |
| Jan 15 | 46°F | 27°F | 63°F 2012 | -1°F 1987 | 22% | 12% |
| Jan 16 | 46°F | 28°F | 62°F 2011 | 1°F 2007 | 22% | 12% |
| Jan 17 | 46°F | 28°F | 63°F 2011 | -2°F 1988 | 22% | 12% |
| Jan 18 | 46°F | 28°F | 58°F 1991 | -2°F 1988 | 22% | 12% |
| Jan 19 | 46°F | 28°F | 61°F 2018 | 4°F 1988 | 22% | 12% |
| Jan 20 | 46°F | 28°F | 61°F 2003 | 4°F 2013 | 22% | 12% |
| Jan 21 | 46°F | 28°F | 60°F 1994 | 0°F 2013 | 22% | 12% |
| Jan 22 | 46°F | 28°F | 57°F 2003 | 6°F 2023 | 22% | 12% |
| Jan 23 | 46°F | 28°F | 57°F 2003 | 9°F 1996 | 22% | 12% |
| Jan 24 | 46°F | 28°F | 64°F 1998 | 9°F 1989 | 22% | 12% |
| Jan 25 | 47°F | 28°F | 58°F 1998 | 9°F 1993 | 22% | 12% |
| Jan 26 | 47°F | 28°F | 63°F 1987 | 9°F 1990 | 22% | 12% |
| Jan 27 | 47°F | 28°F | 60°F 1992 | 11°F 2009 | 22% | 12% |
| Jan 28 | 47°F | 28°F | 61°F 2011 | 9°F 2002 | 21% | 11% |
| Jan 29 | 47°F | 28°F | 64°F 2024 | 9°F 2002 | 21% | 11% |
| Jan 30 | 47°F | 28°F | 62°F 2003 | -1°F 2023 | 22% | 11% |
| Jan 31 | 47°F | 28°F | 69°F 2003 | 1°F 2023 | 22% | 11% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (PST).
- January 1
- sunrise 7:20 AM, sunset 4:46 PM
- January 31
- sunrise 7:07 AM, sunset 5:18 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.