Harleysville Weather in January
Average highs run from 41°F on January 1 to 40°F on January 31, and lows from 22°F to 20°F. Normal precipitation for the month is 3.32 in over about 8 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
- 40°F
- Average low
- 20°F
- Precipitation
- 3.32 in
- Snowfall
- 3.9 in
- Record high
- 71°FJan 7, 2007
- Record low
- -11°FJan 24, 2014
- Chance of a freeze
- 100%
- Daylight
- 9 h 22 min to 10 h 08 min
- Cloud cover
- 66%
- Humidity
- 87%
- Dew point
- 23°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 | 41°F | 22°F | 56°F 2019 | -2°F 2018 | 28% | 4% |
| Jan 2 | 41°F | 22°F | 63°F 2005 | -3°F 2018 | 28% | 4% |
| Jan 3 | 41°F | 22°F | 62°F 2000 | -3°F 2018 | 28% | 4% |
| Jan 4 | 41°F | 22°F | 61°F 2000 | -1°F 2018 | 28% | 4% |
| Jan 5 | 40°F | 21°F | 65°F 2000 | -5°F 2018 | 28% | 4% |
| Jan 6 | 40°F | 21°F | 62°F 2007 | 1°F 2018 | 28% | 4% |
| Jan 7 | 40°F | 21°F | 71°F 2007 | -5°F 2018 | 27% | 4% |
| Jan 8 | 40°F | 21°F | 64°F 2008 | -6°F 2018 | 27% | 4% |
| Jan 9 | 40°F | 21°F | 65°F 1998 | 2°F 2017 | 27% | 4% |
| Jan 10 | 40°F | 21°F | 64°F 2008 | 1°F 2004 | 27% | 4% |
| Jan 11 | 40°F | 21°F | 60°F 2020 | 1°F 2004 | 26% | 4% |
| Jan 12 | 40°F | 20°F | 67°F 2020 | 2°F 2004 | 26% | 4% |
| Jan 13 | 40°F | 20°F | 63°F 2018 | 12°F 1997 | 26% | 4% |
| Jan 14 | 39°F | 20°F | 65°F 2005 | 1°F 2011 | 26% | 4% |
| Jan 15 | 39°F | 20°F | 54°F 2014 | 5°F 2011 | 26% | 4% |
| Jan 16 | 39°F | 20°F | 54°F 2007 | 1°F 2004 | 25% | 5% |
| Jan 17 | 39°F | 20°F | 54°F 2007 | 1°F 2009 | 25% | 5% |
| Jan 18 | 39°F | 20°F | 62°F 2006 | 0°F 2003 | 25% | 5% |
| Jan 19 | 39°F | 20°F | 56°F 1999 | 0°F 1997 | 25% | 5% |
| Jan 20 | 39°F | 20°F | 51°F 2013 | 0°F 1997 | 24% | 5% |
| Jan 21 | 39°F | 20°F | 60°F 2006 | -8°F 2026 | 24% | 5% |
| Jan 22 | 39°F | 20°F | 60°F 2006 | -7°F 2025 | 24% | 5% |
| Jan 23 | 39°F | 20°F | 54°F 2018 | -4°F 2014 | 24% | 5% |
| Jan 24 | 39°F | 20°F | 59°F 2018 | -11°F 2014 | 23% | 5% |
| Jan 25 | 39°F | 20°F | 59°F 1999 | -6°F 2025 | 23% | 5% |
| Jan 26 | 39°F | 20°F | 59°F 2010 | 3°F 2018 | 23% | 5% |
| Jan 27 | 40°F | 20°F | 54°F 2002 | 0°F 2026 | 23% | 5% |
| Jan 28 | 40°F | 20°F | 65°F 2002 | -6°F 2005 | 23% | 5% |
| Jan 29 | 40°F | 20°F | 63°F 2002 | -10°F 2014 | 23% | 5% |
| Jan 30 | 40°F | 20°F | 69°F 2002 | -4°F 2014 | 22% | 5% |
| Jan 31 | 40°F | 20°F | 65°F 2013 | -4°F 2026 | 22% | 5% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:24 AM, sunset 4:46 PM
- January 31
- sunrise 7:11 AM, sunset 5:19 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00363437 (Graterford 1 E), public domain. Records: NOAA GHCN-Daily, station USC00367938, 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.