Harlem Weather in December
Average highs run from 36°F on December 1 to 28°F on December 31, and lows from 14°F to 5°F. Normal precipitation for the month is 0.50 in over about 4 wet days.
December day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
December at a glance
- Average high
- 31°F
- Average low
- 9°F
- Precipitation
- 0.50 in
- Record high
- 66°FDec 1, 2021
- Record low
- -36°FDec 7, 2013
- Chance of a freeze
- 100%
- Daylight
- 8 h 36 min to 8 h 22 min
- Cloud cover
- 71%
- Humidity
- 79%
- Dew point
- 17°F
- Wind
- 12.1 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 36°F | 14°F | 66°F 2021 | -17°F 2025 | 14% |
| Dec 2 | 35°F | 13°F | 56°F 2021 | -7°F 2005 | 14% |
| Dec 3 | 35°F | 13°F | 55°F 2021 | -13°F 2006 | 13% |
| Dec 4 | 35°F | 13°F | 55°F 2007 | -12°F 2005 | 13% |
| Dec 5 | 34°F | 12°F | 56°F 2012 | -18°F 2005 | 13% |
| Dec 6 | 34°F | 12°F | 54°F 2023 | -23°F 2013 | 13% |
| Dec 7 | 33°F | 12°F | 55°F 2015 | -36°F 2013 | 13% |
| Dec 8 | 33°F | 11°F | 54°F 2015 | -36°F 2013 | 13% |
| Dec 9 | 33°F | 11°F | 58°F 2001 | -29°F 2009 | 13% |
| Dec 10 | 32°F | 11°F | 59°F 2015 | -25°F 2000 | 13% |
| Dec 11 | 32°F | 10°F | 61°F 2004 | -27°F 2000 | 13% |
| Dec 12 | 32°F | 10°F | 58°F 2017 | -10°F 2000 | 13% |
| Dec 13 | 31°F | 9°F | 57°F 2017 | -15°F 2009 | 13% |
| Dec 14 | 31°F | 9°F | 55°F 2004 | -22°F 2009 | 13% |
| Dec 15 | 31°F | 9°F | 55°F 1997 | -30°F 2009 | 13% |
| Dec 16 | 30°F | 8°F | 53°F 2025 | -27°F 2008 | 14% |
| Dec 17 | 30°F | 8°F | 55°F 2001 | -28°F 2016 | 14% |
| Dec 18 | 30°F | 8°F | 52°F 2011 | -17°F 2016 | 14% |
| Dec 19 | 30°F | 7°F | 59°F 2004 | -12°F 2005 | 14% |
| Dec 20 | 29°F | 7°F | 61°F 2004 | -22°F 2000 | 14% |
| Dec 21 | 29°F | 7°F | 52°F 2023 | -30°F 2022 | 14% |
| Dec 22 | 29°F | 7°F | 52°F 2023 | -23°F 2022 | 14% |
| Dec 23 | 29°F | 6°F | 48°F 1999 | -28°F 2013 | 15% |
| Dec 24 | 29°F | 6°F | 50°F 1999 | -18°F 2008 | 15% |
| Dec 25 | 29°F | 6°F | 48°F 2020 | -33°F 1996 | 15% |
| Dec 26 | 28°F | 6°F | 45°F 1999 | -28°F 1996 | 15% |
| Dec 27 | 28°F | 6°F | 50°F 1999 | -28°F 1996 | 16% |
| Dec 28 | 28°F | 5°F | 56°F 1999 | -29°F 2021 | 16% |
| Dec 29 | 28°F | 5°F | 51°F 1999 | -26°F 1996 | 16% |
| Dec 30 | 28°F | 5°F | 46°F 2011 | -20°F 2021 | 16% |
| Dec 31 | 28°F | 5°F | 49°F 2011 | -33°F 2017 | 16% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (MST).
- December 1
- sunrise 7:46 AM, sunset 4:22 PM
- December 31
- sunrise 8:07 AM, sunset 4:29 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00243929 (Harlem), public domain. Records: NOAA GHCN-Daily, station USC00245334, 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.