Sun Valley Weather in January
Average highs run from 30°F on January 1 to 33°F on January 31, and lows from 8°F to 9°F. Normal precipitation for the month is 2.25 in over about 10 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
- 31°F
- Average low
- 8°F
- Precipitation
- 2.25 in
- Snowfall
- 27.0 in
- Record high
- 55°FJan 31, 2024
- Record low
- -10°FJan 30, 2023
- Chance of a freeze
- 100%
- Daylight
- 9 h 00 min to 9 h 52 min
- Cloud cover
- 59%
- Humidity
- 84%
- Dew point
- 14°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 | 30°F | 8°F | 45°F 2026 | -7°F 2015 | 34% | 32% |
| Jan 2 | 30°F | 8°F | 45°F 2026 | -5°F 2015 | 34% | 32% |
| Jan 3 | 30°F | 8°F | 44°F 2025 | -3°F 2015 | 34% | 32% |
| Jan 4 | 30°F | 8°F | 46°F 2018 | 9°F 2023 | 34% | 31% |
| Jan 5 | 30°F | 8°F | 50°F 2018 | -2°F 2017 | 34% | 31% |
| Jan 6 | 30°F | 8°F | 45°F 2015 | -4°F 2017 | 33% | 31% |
| Jan 7 | 30°F | 8°F | 50°F 2015 | 4°F 2017 | 33% | 31% |
| Jan 8 | 30°F | 8°F | 46°F 2018 | 8°F 2024 | 33% | 31% |
| Jan 9 | 31°F | 8°F | 41°F 2017 | 9°F 2016 | 33% | 30% |
| Jan 10 | 31°F | 8°F | 43°F 2018 | 7°F 2016 | 33% | 30% |
| Jan 11 | 31°F | 8°F | 42°F 2026 | 0°F 2016 | 32% | 30% |
| Jan 12 | 31°F | 8°F | 43°F 2018 | 5°F 2016 | 32% | 29% |
| Jan 13 | 31°F | 8°F | 52°F 2026 | -7°F 2024 | 32% | 29% |
| Jan 14 | 31°F | 8°F | 47°F 2018 | 5°F 2025 | 32% | 29% |
| Jan 15 | 31°F | 8°F | 47°F 2018 | -1°F 2024 | 31% | 29% |
| Jan 16 | 31°F | 8°F | 42°F 2018 | -2°F 2024 | 31% | 28% |
| Jan 17 | 32°F | 8°F | 45°F 2026 | 4°F 2017 | 31% | 28% |
| Jan 18 | 32°F | 8°F | 44°F 2015 | 4°F 2025 | 31% | 28% |
| Jan 19 | 32°F | 8°F | 42°F 2024 | 2°F 2025 | 30% | 28% |
| Jan 20 | 32°F | 8°F | 43°F 2020 | -6°F 2025 | 30% | 27% |
| Jan 21 | 32°F | 8°F | 43°F 2024 | -3°F 2025 | 30% | 27% |
| Jan 22 | 32°F | 8°F | 40°F 2016 | -2°F 2025 | 30% | 27% |
| Jan 23 | 32°F | 8°F | 41°F 2020 | -1°F 2023 | 30% | 26% |
| Jan 24 | 32°F | 8°F | 40°F 2016 | -2°F 2023 | 29% | 26% |
| Jan 25 | 32°F | 9°F | 41°F 2020 | -2°F 2023 | 29% | 26% |
| Jan 26 | 32°F | 9°F | 53°F 2015 | 2°F 2023 | 29% | 26% |
| Jan 27 | 33°F | 9°F | 48°F 2015 | 2°F 2022 | 29% | 25% |
| Jan 28 | 33°F | 9°F | 48°F 2024 | 3°F 2017 | 29% | 25% |
| Jan 29 | 33°F | 9°F | 51°F 2024 | 2°F 2023 | 29% | 25% |
| Jan 30 | 33°F | 9°F | 53°F 2024 | -10°F 2023 | 29% | 25% |
| Jan 31 | 33°F | 9°F | 55°F 2024 | -8°F 2023 | 29% | 25% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 8:11 AM, sunset 5:11 PM
- January 31
- sunrise 7:55 AM, sunset 5:47 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00104845 (Ketchum RS), public domain. Records: NOAA GHCN-Daily, station USC00100774, 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.