Greenock Weather in December
Average highs run from 7°C on December 1 to 5°C on December 31, and lows from 4°C to 2°C. Normal precipitation for the month is 158 mm over about 22 wet days.
December day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
December at a glance
- Average high
- 6°C
- Average low
- 3°C
- Precipitation
- 158 mm
- Reanalysis high
- 12°CDec 7, 2016
- Reanalysis low
- -7°CDec 28, 1995
- Daylight
- 7 h 25 min to 7 h 04 min
- Cloud cover
- 78%
- Humidity
- 93%
- Dew point
- 3°C
- Wind
- 23.0 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Dec 1 | 7°C | 4°C | 11°C 2006 | -4°C 2010 | 69% |
| Dec 2 | 7°C | 4°C | 10°C 2015 | -4°C 2010 | 69% |
| Dec 3 | 7°C | 4°C | 11°C 1995 | -3°C 2010 | 68% |
| Dec 4 | 7°C | 3°C | 11°C 2007 | -1°C 2012 | 68% |
| Dec 5 | 7°C | 3°C | 11°C 2007 | -2°C 2012 | 67% |
| Dec 6 | 7°C | 3°C | 11°C 2007 | -4°C 2010 | 68% |
| Dec 7 | 6°C | 3°C | 12°C 2016 | -4°C 2010 | 68% |
| Dec 8 | 6°C | 3°C | 11°C 2015 | -4°C 2010 | 68% |
| Dec 9 | 6°C | 3°C | 11°C 2016 | -1°C 2010 | 69% |
| Dec 10 | 6°C | 3°C | 12°C 1994 | -2°C 2017 | 68% |
| Dec 11 | 6°C | 3°C | 12°C 1994 | -1°C 2012 | 68% |
| Dec 12 | 6°C | 3°C | 11°C 2013 | 0°C 1996 | 68% |
| Dec 13 | 6°C | 3°C | 11°C 2006 | -2°C 1993 | 68% |
| Dec 14 | 6°C | 3°C | 11°C 1998 | -1°C 2010 | 68% |
| Dec 15 | 6°C | 3°C | 9°C 2005 | -1°C 2010 | 68% |
| Dec 16 | 6°C | 3°C | 10°C 2015 | -1°C 2010 | 68% |
| Dec 17 | 6°C | 3°C | 11°C 2015 | -3°C 2010 | 68% |
| Dec 18 | 6°C | 3°C | 10°C 2015 | -4°C 2010 | 69% |
| Dec 19 | 6°C | 3°C | 12°C 2015 | -5°C 2010 | 70% |
| Dec 20 | 6°C | 2°C | 10°C 2017 | -5°C 2010 | 69% |
| Dec 21 | 5°C | 2°C | 10°C 2014 | -4°C 1995 | 69% |
| Dec 22 | 5°C | 2°C | 11°C 2015 | -5°C 2010 | 69% |
| Dec 23 | 5°C | 2°C | 10°C 1991 | -5°C 2010 | 68% |
| Dec 24 | 5°C | 2°C | 10°C 2017 | -5°C 2010 | 68% |
| Dec 25 | 5°C | 2°C | 10°C 2011 | -3°C 1993 | 68% |
| Dec 26 | 5°C | 2°C | 10°C 2011 | -6°C 1995 | 68% |
| Dec 27 | 5°C | 2°C | 10°C 2007 | -7°C 1995 | 69% |
| Dec 28 | 5°C | 2°C | 10°C 2012 | -7°C 1995 | 70% |
| Dec 29 | 5°C | 2°C | 10°C 2018 | -7°C 1995 | 70% |
| Dec 30 | 5°C | 2°C | 11°C 2015 | -3°C 1995 | 70% |
| Dec 31 | 5°C | 2°C | 9°C 2018 | -3°C 2009 | 70% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT).
- December 1
- sunrise 8:25 AM, sunset 3:50 PM
- December 31
- sunrise 8:50 AM, sunset 3:54 PM
Other months
Sources
Cloud, humidity, wind and sunshine, and temperature and precipitation: 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.