Helong Weather in December
Average highs run from -5°C on December 1 to -10°C on December 31, and lows from -15°C to -19°C. Normal precipitation for the month is 12 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
- -8°C
- Average low
- -17°C
- Precipitation
- 12 mm
- Reanalysis high
- 5°CDec 1, 2008
- Reanalysis low
- -30°CDec 14, 2010
- Daylight
- 9 h 18 min to 9 h 06 min
- Cloud cover
- 41%
- Humidity
- 85%
- Dew point
- -15°C
- Wind
- 11.9 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 | -5°C | -15°C | 5°C 2008 | -25°C 1998 | 16% |
| Dec 2 | -5°C | -15°C | 5°C 2010 | -26°C 1998 | 15% |
| Dec 3 | -6°C | -15°C | 5°C 2004 | -25°C 1997 | 15% |
| Dec 4 | -6°C | -15°C | 4°C 2002 | -22°C 2003 | 14% |
| Dec 5 | -6°C | -15°C | 5°C 1991 | -26°C 2019 | 14% |
| Dec 6 | -7°C | -16°C | 3°C 1992 | -23°C 2019 | 13% |
| Dec 7 | -7°C | -16°C | 1°C 1992 | -23°C 2012 | 12% |
| Dec 8 | -7°C | -16°C | 1°C 1994 | -24°C 2012 | 12% |
| Dec 9 | -7°C | -16°C | 3°C 2004 | -25°C 2011 | 12% |
| Dec 10 | -8°C | -16°C | 2°C 2009 | -24°C 2002 | 12% |
| Dec 11 | -8°C | -17°C | 2°C 2009 | -24°C 2002 | 12% |
| Dec 12 | -8°C | -17°C | 1°C 2006 | -23°C 1991 | 11% |
| Dec 13 | -8°C | -17°C | -1°C 1996 | -27°C 2010 | 10% |
| Dec 14 | -8°C | -17°C | 0°C 2004 | -30°C 2010 | 10% |
| Dec 15 | -8°C | -17°C | 3°C 1996 | -27°C 1993 | 10% |
| Dec 16 | -8°C | -17°C | 3°C 2008 | -26°C 1994 | 9% |
| Dec 17 | -8°C | -17°C | -1°C 1997 | -25°C 2005 | 9% |
| Dec 18 | -8°C | -17°C | 1°C 1998 | -28°C 2014 | 8% |
| Dec 19 | -9°C | -18°C | 2°C 2016 | -26°C 2012 | 7% |
| Dec 20 | -9°C | -18°C | 3°C 2016 | -22°C 2012 | 7% |
| Dec 21 | -9°C | -18°C | -1°C 2016 | -23°C 2008 | 7% |
| Dec 22 | -9°C | -18°C | 0°C 2007 | -26°C 2004 | 8% |
| Dec 23 | -9°C | -18°C | 1°C 1994 | -26°C 2012 | 8% |
| Dec 24 | -9°C | -18°C | 0°C 2006 | -29°C 2012 | 7% |
| Dec 25 | -9°C | -18°C | 2°C 2006 | -28°C 2011 | 6% |
| Dec 26 | -9°C | -18°C | 2°C 2006 | -28°C 2000 | 6% |
| Dec 27 | -9°C | -18°C | 0°C 1999 | -29°C 2015 | 6% |
| Dec 28 | -9°C | -18°C | -1°C 2007 | -26°C 2016 | 6% |
| Dec 29 | -10°C | -19°C | 1°C 2019 | -24°C 2011 | 5% |
| Dec 30 | -10°C | -19°C | -4°C 2000 | -24°C 2011 | 5% |
| Dec 31 | -10°C | -19°C | -3°C 2006 | -26°C 2009 | 5% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+8).
- December 1
- sunrise 6:34 AM, sunset 3:52 PM
- December 31
- sunrise 6:54 AM, sunset 4:00 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.