Jerome County Weather in January
Average highs run from 36°F on January 1 to 39°F on January 31, and lows from 21°F to 23°F. Normal precipitation for the month is 1.20 in over about 11 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
- 37°F
- Average low
- 22°F
- Precipitation
- 1.20 in
- Snowfall
- 7.8 in
- Record high
- 61°FJan 31, 2024
- Record low
- -9°FJan 6, 2017
- Chance of a freeze
- 100%
- Daylight
- 9 h 07 min to 9 h 57 min
- Cloud cover
- 66%
- Humidity
- 79%
- Dew point
- 22°F
- Wind
- 9.8 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 | 36°F | 21°F | 46°F 2006 | -7°F 2016 | 31% | 16% |
| Jan 2 | 36°F | 21°F | 51°F 2026 | -2°F 2022 | 32% | 17% |
| Jan 3 | 36°F | 21°F | 48°F 2003 | 1°F 2013 | 32% | 17% |
| Jan 4 | 36°F | 21°F | 50°F 2012 | -2°F 2009 | 32% | 17% |
| Jan 5 | 36°F | 21°F | 50°F 2012 | -5°F 2004 | 32% | 17% |
| Jan 6 | 36°F | 21°F | 49°F 2026 | -9°F 2017 | 32% | 17% |
| Jan 7 | 36°F | 21°F | 47°F 2015 | 2°F 2017 | 32% | 17% |
| Jan 8 | 36°F | 21°F | 46°F 2009 | 4°F 2010 | 32% | 17% |
| Jan 9 | 36°F | 21°F | 52°F 2017 | 9°F 2022 | 32% | 17% |
| Jan 10 | 36°F | 21°F | 50°F 1999 | 7°F 2011 | 32% | 17% |
| Jan 11 | 36°F | 22°F | 51°F 2014 | 1°F 2011 | 33% | 18% |
| Jan 12 | 37°F | 22°F | 49°F 2018 | 0°F 2007 | 33% | 18% |
| Jan 13 | 37°F | 22°F | 52°F 2003 | -7°F 2013 | 33% | 18% |
| Jan 14 | 37°F | 22°F | 50°F 2006 | 2°F 2007 | 33% | 18% |
| Jan 15 | 37°F | 22°F | 49°F 2018 | 2°F 2017 | 33% | 18% |
| Jan 16 | 37°F | 22°F | 53°F 2000 | -2°F 2024 | 33% | 18% |
| Jan 17 | 37°F | 22°F | 49°F 2011 | 3°F 2008 | 33% | 18% |
| Jan 18 | 37°F | 22°F | 52°F 2018 | 2°F 2013 | 33% | 18% |
| Jan 19 | 37°F | 22°F | 47°F 2014 | 3°F 2013 | 34% | 18% |
| Jan 20 | 37°F | 22°F | 46°F 2014 | 2°F 2013 | 34% | 19% |
| Jan 21 | 37°F | 22°F | 47°F 2014 | 6°F 2025 | 34% | 19% |
| Jan 22 | 37°F | 22°F | 44°F 2003 | -2°F 2008 | 34% | 19% |
| Jan 23 | 38°F | 22°F | 49°F 2003 | 0°F 2008 | 34% | 19% |
| Jan 24 | 38°F | 22°F | 44°F 2019 | 7°F 2008 | 34% | 19% |
| Jan 25 | 38°F | 22°F | 46°F 2003 | 11°F 2022 | 34% | 19% |
| Jan 26 | 38°F | 22°F | 52°F 2003 | 3°F 2009 | 34% | 19% |
| Jan 27 | 38°F | 22°F | 51°F 2003 | 1°F 2009 | 34% | 18% |
| Jan 28 | 38°F | 23°F | 51°F 2018 | 4°F 2022 | 34% | 18% |
| Jan 29 | 38°F | 23°F | 51°F 2024 | -4°F 2002 | 34% | 18% |
| Jan 30 | 38°F | 23°F | 57°F 2018 | -3°F 2002 | 34% | 18% |
| Jan 31 | 39°F | 23°F | 61°F 2024 | -4°F 2023 | 33% | 18% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (MST).
- January 1
- sunrise 8:07 AM, sunset 5:14 PM
- January 31
- sunrise 7:52 AM, sunset 5:49 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00109303 (Twin Falls 6 E), public domain. Records: NOAA GHCN-Daily, station USW00004110, 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.