Heilbron Weather in December
Average highs run from 28°C on December 1 to 29°C on December 31, and lows from 13°C to 15°C. Normal precipitation for the month is 99 mm over about 19 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
- 29°C
- Average low
- 14°C
- Precipitation
- 99 mm
- Reanalysis high
- 38°CDec 7, 2015
- Reanalysis low
- 3°CDec 1, 1995
- Daylight
- 13 h 44 min to 13 h 50 min
- Cloud cover
- 66%
- Humidity
- 60%
- Dew point
- 11°C
- Wind
- 13.7 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 | 28°C | 13°C | 35°C 2019 | 3°C 1995 | 55% |
| Dec 2 | 28°C | 13°C | 36°C 2019 | 7°C 1995 | 57% |
| Dec 3 | 28°C | 13°C | 35°C 2019 | 7°C 1998 | 59% |
| Dec 4 | 28°C | 13°C | 36°C 2016 | 5°C 1998 | 60% |
| Dec 5 | 28°C | 13°C | 35°C 2015 | 6°C 1991 | 60% |
| Dec 6 | 28°C | 13°C | 35°C 2015 | 9°C 1998 | 59% |
| Dec 7 | 28°C | 14°C | 38°C 2015 | 11°C 1993 | 59% |
| Dec 8 | 28°C | 14°C | 34°C 2003 | 12°C 1995 | 59% |
| Dec 9 | 28°C | 14°C | 33°C 2003 | 10°C 2011 | 60% |
| Dec 10 | 28°C | 14°C | 34°C 2015 | 11°C 2018 | 59% |
| Dec 11 | 28°C | 14°C | 36°C 2015 | 7°C 2006 | 59% |
| Dec 12 | 28°C | 14°C | 34°C 2003 | 4°C 1994 | 60% |
| Dec 13 | 29°C | 14°C | 35°C 2018 | 8°C 2005 | 59% |
| Dec 14 | 29°C | 14°C | 35°C 2018 | 9°C 2017 | 59% |
| Dec 15 | 29°C | 14°C | 35°C 2018 | 10°C 2017 | 60% |
| Dec 16 | 29°C | 14°C | 35°C 2018 | 7°C 2019 | 59% |
| Dec 17 | 29°C | 14°C | 36°C 2003 | 11°C 2010 | 57% |
| Dec 18 | 29°C | 14°C | 35°C 2003 | 7°C 1997 | 56% |
| Dec 19 | 29°C | 14°C | 36°C 2015 | 8°C 2007 | 55% |
| Dec 20 | 29°C | 14°C | 34°C 2003 | 9°C 2007 | 56% |
| Dec 21 | 29°C | 14°C | 35°C 2003 | 10°C 2001 | 57% |
| Dec 22 | 29°C | 14°C | 35°C 1994 | 12°C 1998 | 59% |
| Dec 23 | 29°C | 14°C | 35°C 2018 | 11°C 1991 | 59% |
| Dec 24 | 29°C | 15°C | 37°C 2015 | 12°C 1993 | 60% |
| Dec 25 | 29°C | 15°C | 36°C 2018 | 8°C 1994 | 61% |
| Dec 26 | 29°C | 15°C | 37°C 2018 | 9°C 1992 | 61% |
| Dec 27 | 29°C | 15°C | 37°C 2018 | 7°C 2003 | 60% |
| Dec 28 | 29°C | 15°C | 34°C 2015 | 12°C 1995 | 61% |
| Dec 29 | 29°C | 15°C | 34°C 2015 | 12°C 1995 | 60% |
| Dec 30 | 29°C | 15°C | 34°C 2020 | 11°C 1995 | 58% |
| Dec 31 | 29°C | 15°C | 35°C 2004 | 10°C 2007 | 58% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT+2).
- December 1
- sunrise 5:05 AM, sunset 6:49 PM
- December 31
- sunrise 5:16 AM, sunset 7:06 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.