Riverview Weather in December
Average highs run from 58°F on December 1 to 53°F on December 31, and lows from 36°F to 31°F. Normal precipitation for the month is 3.62 in over about 11 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
- 55°F
- Average low
- 33°F
- Precipitation
- 3.62 in
- Snowfall
- 0.1 in
- Record high
- 80°FDec 10, 2007
- Record low
- 8°FDec 24, 2022
- Chance of a freeze
- 99%
- Daylight
- 9 h 58 min to 9 h 50 min
- Cloud cover
- 58%
- Humidity
- 80%
- Dew point
- 36°F
- Wind
- 5.6 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 |
|---|---|---|---|---|---|---|
| Dec 1 | 58°F | 36°F | 75°F 2006 | 23°F 1999 | 35% | 0% |
| Dec 2 | 58°F | 35°F | 71°F 2021 | 22°F 2002 | 35% | 0% |
| Dec 3 | 58°F | 35°F | 78°F 2021 | 21°F 2008 | 36% | 0% |
| Dec 4 | 57°F | 35°F | 75°F 2021 | 16°F 2000 | 36% | 0% |
| Dec 5 | 57°F | 35°F | 72°F 2001 | 20°F 2000 | 36% | 0% |
| Dec 6 | 57°F | 35°F | 77°F 2013 | 19°F 2010 | 36% | 0% |
| Dec 7 | 57°F | 35°F | 75°F 2001 | 13°F 2010 | 36% | 0% |
| Dec 8 | 57°F | 34°F | 74°F 2001 | 13°F 2010 | 36% | 0% |
| Dec 9 | 56°F | 34°F | 76°F 2007 | 17°F 2006 | 36% | 0% |
| Dec 10 | 56°F | 34°F | 80°F 2007 | 20°F 2016 | 36% | 0% |
| Dec 11 | 56°F | 34°F | 79°F 2007 | 21°F 2016 | 37% | 0% |
| Dec 12 | 56°F | 34°F | 79°F 2007 | 22°F 2014 | 37% | 0% |
| Dec 13 | 56°F | 34°F | 76°F 2007 | 21°F 2010 | 37% | 0% |
| Dec 14 | 55°F | 34°F | 71°F 2007 | 11°F 2010 | 37% | 0% |
| Dec 15 | 55°F | 33°F | 75°F 2015 | 11°F 2010 | 37% | 0% |
| Dec 16 | 55°F | 33°F | 71°F 2011 | 19°F 2004 | 37% | 0% |
| Dec 17 | 55°F | 33°F | 73°F 2021 | 23°F 2007 | 37% | 0% |
| Dec 18 | 55°F | 33°F | 74°F 2016 | 19°F 2007 | 36% | 0% |
| Dec 19 | 54°F | 33°F | 74°F 2006 | 20°F 2022 | 36% | 0% |
| Dec 20 | 54°F | 33°F | 66°F 2008 | 13°F 2004 | 36% | 0% |
| Dec 21 | 54°F | 33°F | 72°F 2013 | 18°F 2000 | 36% | 0% |
| Dec 22 | 54°F | 32°F | 72°F 2013 | 19°F 2005 | 36% | 0% |
| Dec 23 | 54°F | 32°F | 70°F 2006 | 15°F 2022 | 36% | 0% |
| Dec 24 | 54°F | 32°F | 76°F 2025 | 8°F 2022 | 35% | 0% |
| Dec 25 | 53°F | 32°F | 78°F 2025 | 12°F 2022 | 35% | 0% |
| Dec 26 | 53°F | 32°F | 76°F 2015 | 13°F 2022 | 35% | 0% |
| Dec 27 | 53°F | 32°F | 75°F 2025 | 19°F 2001 | 35% | 0% |
| Dec 28 | 53°F | 32°F | 73°F 2015 | 17°F 2010 | 35% | 0% |
| Dec 29 | 53°F | 32°F | 75°F 2015 | 20°F 2009 | 35% | 0% |
| Dec 30 | 53°F | 32°F | 69°F 2015 | 21°F 2000 | 35% | 0% |
| Dec 31 | 53°F | 31°F | 72°F 2021 | 12°F 2000 | 35% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EST).
- December 1
- sunrise 7:14 AM, sunset 5:12 PM
- December 31
- sunrise 7:32 AM, sunset 5:22 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USW00053871 (Rock Hill York CO AP), public domain. Records: NOAA GHCN-Daily, station USW00053871, 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.