Yilan Weather in December
Average highs run from -9°C on December 1 to -14°C on December 31, and lows from -18°C to -23°C. Normal precipitation for the month is 9 mm over about 3 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
- -13°C
- Average low
- -21°C
- Precipitation
- 9 mm
- Reanalysis high
- 3°CDec 4, 2002
- Reanalysis low
- -38°CDec 26, 2012
- Daylight
- 8 h 53 min to 8 h 39 min
- Cloud cover
- 43%
- Humidity
- 89%
- Dew point
- -19°C
- Wind
- 11.2 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 | -9°C | -18°C | 3°C 2008 | -26°C 1998 | 12% |
| Dec 2 | -9°C | -18°C | 2°C 2018 | -26°C 1998 | 12% |
| Dec 3 | -10°C | -19°C | 2°C 2018 | -26°C 1998 | 12% |
| Dec 4 | -10°C | -19°C | 3°C 2002 | -26°C 1998 | 12% |
| Dec 5 | -11°C | -19°C | -2°C 1997 | -27°C 2000 | 12% |
| Dec 6 | -11°C | -20°C | -1°C 1992 | -31°C 2012 | 12% |
| Dec 7 | -11°C | -20°C | -5°C 2007 | -31°C 2012 | 11% |
| Dec 8 | -12°C | -20°C | -5°C 2008 | -27°C 1991 | 10% |
| Dec 9 | -12°C | -21°C | -3°C 2008 | -28°C 2002 | 10% |
| Dec 10 | -12°C | -21°C | -6°C 2007 | -27°C 1991 | 9% |
| Dec 11 | -12°C | -21°C | -6°C 2007 | -28°C 1991 | 8% |
| Dec 12 | -13°C | -21°C | -4°C 2006 | -30°C 2010 | 8% |
| Dec 13 | -13°C | -22°C | -7°C 1998 | -34°C 2010 | 8% |
| Dec 14 | -13°C | -22°C | -7°C 1997 | -34°C 2010 | 8% |
| Dec 15 | -13°C | -22°C | -4°C 1996 | -31°C 2020 | 8% |
| Dec 16 | -13°C | -22°C | -1°C 2008 | -30°C 2010 | 8% |
| Dec 17 | -13°C | -22°C | -3°C 2008 | -30°C 2014 | 8% |
| Dec 18 | -13°C | -22°C | -2°C 1997 | -32°C 2012 | 7% |
| Dec 19 | -13°C | -22°C | -4°C 2016 | -32°C 1996 | 7% |
| Dec 20 | -13°C | -22°C | -5°C 2018 | -29°C 2012 | 7% |
| Dec 21 | -13°C | -22°C | -7°C 2006 | -31°C 2004 | 7% |
| Dec 22 | -13°C | -22°C | -4°C 2018 | -34°C 2012 | 8% |
| Dec 23 | -14°C | -22°C | -3°C 2007 | -36°C 2012 | 9% |
| Dec 24 | -14°C | -23°C | -6°C 1997 | -37°C 2012 | 9% |
| Dec 25 | -14°C | -23°C | -3°C 1997 | -31°C 2012 | 9% |
| Dec 26 | -14°C | -23°C | -2°C 1997 | -38°C 2012 | 9% |
| Dec 27 | -14°C | -23°C | -5°C 1999 | -34°C 2012 | 8% |
| Dec 28 | -14°C | -23°C | -7°C 2014 | -31°C 2012 | 8% |
| Dec 29 | -14°C | -23°C | -10°C 1997 | -34°C 2020 | 8% |
| Dec 30 | -14°C | -23°C | -10°C 1997 | -30°C 2009 | 8% |
| Dec 31 | -14°C | -23°C | -7°C 2010 | -36°C 2009 | 7% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- December 1
- sunrise 6:44 AM, sunset 3:37 PM
- December 31
- sunrise 7:05 AM, sunset 3:44 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.