Bethlehem Weather in January
Average highs run from 29°F on January 1 to 28°F on January 31, and lows from 6°F to 2°F. Normal precipitation for the month is 2.59 in over about 16 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
- 28°F
- Average low
- 3°F
- Precipitation
- 2.59 in
- Snowfall
- 21.3 in
- Record high
- 63°FJan 6, 2007
- Record low
- -38°FJan 16, 2009
- Chance of a freeze
- 100%
- Daylight
- 8 h 56 min to 9 h 49 min
- Cloud cover
- 74%
- Humidity
- 96%
- Dew point
- 11°F
- Wind
- 6.5 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 |
|---|---|---|---|---|---|---|
| Jan 1 | 29°F | 6°F | 49°F 2005 | -30°F 2018 | 54% | 41% |
| Jan 2 | 29°F | 6°F | 42°F 2011 | -33°F 2018 | 54% | 41% |
| Jan 3 | 29°F | 6°F | 51°F 2000 | -26°F 2008 | 54% | 41% |
| Jan 4 | 29°F | 6°F | 56°F 2000 | -22°F 2014 | 54% | 41% |
| Jan 5 | 29°F | 5°F | 52°F 2007 | -14°F 1999 | 54% | 41% |
| Jan 6 | 29°F | 5°F | 63°F 2007 | -19°F 1999 | 54% | 41% |
| Jan 7 | 29°F | 5°F | 40°F 2007 | -30°F 2018 | 54% | 42% |
| Jan 8 | 28°F | 5°F | 62°F 2008 | -30°F 2004 | 53% | 42% |
| Jan 9 | 28°F | 4°F | 57°F 2008 | -36°F 2004 | 53% | 42% |
| Jan 10 | 28°F | 4°F | 51°F 2016 | -34°F 2004 | 53% | 42% |
| Jan 11 | 28°F | 4°F | 60°F 2020 | -31°F 2004 | 53% | 42% |
| Jan 12 | 28°F | 4°F | 62°F 2018 | -14°F 2022 | 52% | 41% |
| Jan 13 | 28°F | 4°F | 58°F 2005 | -21°F 1999 | 52% | 41% |
| Jan 14 | 28°F | 3°F | 61°F 2005 | -33°F 1999 | 52% | 41% |
| Jan 15 | 28°F | 3°F | 46°F 1999 | -35°F 2004 | 51% | 41% |
| Jan 16 | 28°F | 3°F | 39°F 1997 | -38°F 2009 | 51% | 41% |
| Jan 17 | 27°F | 3°F | 40°F 1999 | -31°F 2009 | 50% | 41% |
| Jan 18 | 27°F | 3°F | 49°F 1999 | -29°F 2003 | 50% | 40% |
| Jan 19 | 27°F | 3°F | 41°F 1999 | -24°F 1997 | 49% | 40% |
| Jan 20 | 27°F | 3°F | 44°F 2013 | -18°F 2025 | 49% | 40% |
| Jan 21 | 27°F | 2°F | 56°F 2006 | -23°F 2025 | 48% | 40% |
| Jan 22 | 27°F | 2°F | 47°F 1997 | -28°F 2022 | 48% | 40% |
| Jan 23 | 27°F | 2°F | 46°F 1997 | -25°F 2000 | 48% | 39% |
| Jan 24 | 27°F | 2°F | 58°F 1999 | -34°F 2011 | 47% | 39% |
| Jan 25 | 27°F | 2°F | 52°F 2010 | -28°F 2004 | 47% | 39% |
| Jan 26 | 27°F | 2°F | 47°F 2016 | -31°F 2004 | 46% | 39% |
| Jan 27 | 27°F | 2°F | 45°F 2018 | -27°F 2003 | 46% | 38% |
| Jan 28 | 27°F | 2°F | 48°F 2002 | -32°F 2003 | 45% | 38% |
| Jan 29 | 27°F | 2°F | 42°F 2023 | -22°F 2015 | 45% | 38% |
| Jan 30 | 27°F | 2°F | 57°F 2013 | -24°F 2007 | 45% | 38% |
| Jan 31 | 28°F | 2°F | 59°F 2013 | -23°F 1999 | 44% | 37% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:22 AM, sunset 4:18 PM
- January 31
- sunrise 7:06 AM, sunset 4:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00270706 (Bethlehem 2), public domain. Records: NOAA GHCN-Daily, station USW00054728, 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.