Flower Mound Weather in December
Average highs run from 61°F on December 1 to 55°F on December 31, and lows from 40°F to 34°F. Normal precipitation for the month is 2.91 in over about 8 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
- 58°F
- Average low
- 36°F
- Precipitation
- 2.91 in
- Record high
- 89°FDec 3, 2005
- Record low
- -1°FDec 23, 1989
- Chance of a freeze
- 100%
- Daylight
- 10 h 08 min to 10 h 01 min
- Cloud cover
- 55%
- Humidity
- 75%
- Dew point
- 37°F
- Wind
- 10.3 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 | 61°F | 40°F | 83°F 2012 | 24°F 1985 | 23% | 0% |
| Dec 2 | 61°F | 40°F | 83°F 2012 | 19°F 1985 | 24% | 0% |
| Dec 3 | 61°F | 40°F | 89°F 2005 | 24°F 1985 | 24% | 0% |
| Dec 4 | 61°F | 39°F | 84°F 2017 | 22°F 2006 | 24% | 0% |
| Dec 5 | 60°F | 39°F | 81°F 2022 | 24°F 2009 | 24% | 0% |
| Dec 6 | 60°F | 39°F | 84°F 1966 | 21°F 1972 | 24% | 0% |
| Dec 7 | 60°F | 38°F | 84°F 2007 | 21°F 2005 | 24% | 0% |
| Dec 8 | 60°F | 38°F | 80°F 1977 | 17°F 2005 | 25% | 0% |
| Dec 9 | 59°F | 38°F | 81°F 2021 | 15°F 2005 | 25% | 0% |
| Dec 10 | 59°F | 38°F | 83°F 2021 | 16°F 1977 | 25% | 0% |
| Dec 11 | 59°F | 37°F | 80°F 1996 | 21°F 1957 | 25% | 0% |
| Dec 12 | 58°F | 37°F | 83°F 1973 | 18°F 1989 | 25% | 0% |
| Dec 13 | 58°F | 37°F | 80°F 1995 | 18°F 1966 | 26% | 0% |
| Dec 14 | 58°F | 37°F | 80°F 1995 | 15°F 1958 | 26% | 0% |
| Dec 15 | 58°F | 36°F | 80°F 2021 | 14°F 1989 | 26% | 0% |
| Dec 16 | 57°F | 36°F | 80°F 1977 | 12°F 1989 | 26% | 0% |
| Dec 17 | 57°F | 36°F | 78°F 2006 | 18°F 1979 | 26% | 0% |
| Dec 18 | 57°F | 36°F | 81°F 1977 | 15°F 1964 | 26% | 0% |
| Dec 19 | 57°F | 35°F | 78°F 2012 | 16°F 1983 | 26% | 0% |
| Dec 20 | 57°F | 35°F | 82°F 2025 | 17°F 1989 | 26% | 0% |
| Dec 21 | 56°F | 35°F | 85°F 2010 | 10°F 1983 | 26% | 0% |
| Dec 22 | 56°F | 35°F | 81°F 1964 | 3°F 1989 | 26% | 0% |
| Dec 23 | 56°F | 35°F | 82°F 2025 | -1°F 1989 | 26% | 0% |
| Dec 24 | 56°F | 34°F | 88°F 1955 | 7°F 1983 | 26% | 0% |
| Dec 25 | 56°F | 34°F | 82°F 2021 | 6°F 1983 | 27% | 0% |
| Dec 26 | 56°F | 34°F | 86°F 2025 | 16°F 1983 | 27% | 0% |
| Dec 27 | 55°F | 34°F | 82°F 2005 | 23°F 2012 | 27% | 0% |
| Dec 28 | 55°F | 34°F | 85°F 2025 | 18°F 1983 | 27% | 0% |
| Dec 29 | 55°F | 34°F | 76°F 1984 | 10°F 1983 | 27% | 0% |
| Dec 30 | 55°F | 34°F | 82°F 2024 | 7°F 1983 | 27% | 0% |
| Dec 31 | 55°F | 34°F | 77°F 1964 | 13°F 1976 | 27% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:13 AM, sunset 5:21 PM
- December 31
- sunrise 7:31 AM, sunset 5:32 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00413691 (Grapevine Dam), public domain. Records: NOAA GHCN-Daily, station USW00003927, 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.