Dennis Weather in January
Average highs run from 40°F on January 1 to 38°F on January 31, and lows from 25°F to 22°F. Normal precipitation for the month is 3.71 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
- 39°F
- Average low
- 22°F
- Precipitation
- 3.71 in
- Snowfall
- 9.5 in
- Record high
- 64°FJan 12, 2020
- Record low
- -7°FJan 16, 2004
- Chance of a freeze
- 100%
- Daylight
- 9 h 13 min to 10 h 01 min
- Cloud cover
- 76%
- Humidity
- 81%
- Dew point
- 30°F
- Wind
- 19.5 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 | 40°F | 25°F | 61°F 2019 | 2°F 2018 | 36% | 5% |
| Jan 2 | 40°F | 24°F | 53°F 2000 | 3°F 1999 | 36% | 5% |
| Jan 3 | 40°F | 24°F | 56°F 2000 | 5°F 2014 | 36% | 5% |
| Jan 4 | 40°F | 24°F | 58°F 1998 | -5°F 2014 | 36% | 6% |
| Jan 5 | 40°F | 24°F | 56°F 2000 | 9°F 2018 | 36% | 6% |
| Jan 6 | 40°F | 24°F | 57°F 2007 | 6°F 2018 | 35% | 6% |
| Jan 7 | 39°F | 23°F | 55°F 2012 | 1°F 2018 | 35% | 6% |
| Jan 8 | 39°F | 23°F | 57°F 2008 | 1°F 2015 | 35% | 6% |
| Jan 9 | 39°F | 23°F | 55°F 1998 | 6°F 2017 | 35% | 6% |
| Jan 10 | 39°F | 23°F | 57°F 2016 | 3°F 2004 | 35% | 6% |
| Jan 11 | 39°F | 23°F | 55°F 2014 | 3°F 2004 | 35% | 6% |
| Jan 12 | 39°F | 22°F | 64°F 2020 | 8°F 1999 | 35% | 7% |
| Jan 13 | 39°F | 22°F | 57°F 2018 | 11°F 2009 | 35% | 7% |
| Jan 14 | 39°F | 22°F | 57°F 2005 | 0°F 2004 | 34% | 7% |
| Jan 15 | 39°F | 22°F | 51°F 1999 | -3°F 2004 | 34% | 7% |
| Jan 16 | 39°F | 22°F | 53°F 2021 | -7°F 2004 | 34% | 7% |
| Jan 17 | 38°F | 22°F | 51°F 2022 | 4°F 2009 | 34% | 8% |
| Jan 18 | 38°F | 22°F | 55°F 2006 | 2°F 2000 | 34% | 8% |
| Jan 19 | 38°F | 22°F | 49°F 1999 | 2°F 2005 | 34% | 8% |
| Jan 20 | 38°F | 22°F | 54°F 2019 | 4°F 2000 | 34% | 8% |
| Jan 21 | 38°F | 22°F | 53°F 2006 | 5°F 2019 | 34% | 8% |
| Jan 22 | 38°F | 21°F | 49°F 2017 | 2°F 2000 | 34% | 9% |
| Jan 23 | 38°F | 21°F | 52°F 2018 | 4°F 2003 | 34% | 9% |
| Jan 24 | 38°F | 21°F | 54°F 1999 | 2°F 2011 | 34% | 9% |
| Jan 25 | 38°F | 21°F | 52°F 2010 | 2°F 2004 | 34% | 9% |
| Jan 26 | 38°F | 21°F | 52°F 2023 | 6°F 2003 | 33% | 9% |
| Jan 27 | 38°F | 21°F | 53°F 2012 | 6°F 2007 | 33% | 9% |
| Jan 28 | 38°F | 21°F | 52°F 2002 | 1°F 2003 | 33% | 9% |
| Jan 29 | 38°F | 21°F | 59°F 2002 | 2°F 2005 | 33% | 9% |
| Jan 30 | 38°F | 22°F | 51°F 2002 | 2°F 2014 | 33% | 9% |
| Jan 31 | 38°F | 22°F | 54°F 2013 | 1°F 2022 | 33% | 9% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- January 1
- sunrise 7:08 AM, sunset 4:21 PM
- January 31
- sunrise 6:54 AM, sunset 4:55 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00193821 (Hyannis), public domain. Records: NOAA GHCN-Daily, station USW00094720, 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.