Sinton Weather in December
Average highs run from 71°F on December 1 to 66°F on December 31, and lows from 49°F to 45°F. Normal precipitation for the month is 1.70 in over about 5 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
- 68°F
- Average low
- 47°F
- Precipitation
- 1.70 in
- Snowfall
- 0.4 in
- Record high
- 90°FDec 4, 1977
- Record low
- 10°FDec 23, 1989
- Chance of a freeze
- 58%
- Daylight
- 10 h 30 min to 10 h 24 min
- Cloud cover
- 61%
- Humidity
- 76%
- Dew point
- 51°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 | 71°F | 49°F | 83°F 1983 | 25°F 1979 | 13% | 0% |
| Dec 2 | 71°F | 49°F | 87°F 1964 | 35°F 1976 | 13% | 0% |
| Dec 3 | 71°F | 49°F | 86°F 1964 | 32°F 2007 | 13% | 0% |
| Dec 4 | 71°F | 49°F | 90°F 1977 | 28°F 2009 | 14% | 0% |
| Dec 5 | 70°F | 49°F | 90°F 1977 | 27°F 2009 | 14% | 0% |
| Dec 6 | 70°F | 48°F | 84°F 1961 | 29°F 2011 | 14% | 0% |
| Dec 7 | 70°F | 48°F | 85°F 1998 | 29°F 2011 | 14% | 0% |
| Dec 8 | 70°F | 48°F | 87°F 1966 | 29°F 2011 | 14% | 0% |
| Dec 9 | 69°F | 48°F | 84°F 2008 | 27°F 1978 | 14% | 0% |
| Dec 10 | 69°F | 47°F | 85°F 1961 | 19°F 1978 | 14% | 0% |
| Dec 11 | 69°F | 47°F | 86°F 1983 | 20°F 1978 | 14% | 0% |
| Dec 12 | 69°F | 47°F | 85°F 1973 | 27°F 1966 | 14% | 0% |
| Dec 13 | 69°F | 47°F | 87°F 1993 | 25°F 1989 | 14% | 0% |
| Dec 14 | 68°F | 47°F | 85°F 1973 | 28°F 1989 | 14% | 0% |
| Dec 15 | 68°F | 46°F | 82°F 1977 | 30°F 2004 | 14% | 0% |
| Dec 16 | 68°F | 46°F | 89°F 1977 | 21°F 1989 | 14% | 0% |
| Dec 17 | 68°F | 46°F | 83°F 1977 | 22°F 1989 | 14% | 0% |
| Dec 18 | 68°F | 46°F | 84°F 2012 | 25°F 1979 | 14% | 0% |
| Dec 19 | 68°F | 46°F | 82°F 1977 | 21°F 1996 | 14% | 0% |
| Dec 20 | 67°F | 46°F | 83°F 1971 | 22°F 1996 | 14% | 0% |
| Dec 21 | 67°F | 46°F | 89°F 1978 | 20°F 1973 | 14% | 0% |
| Dec 22 | 67°F | 45°F | 85°F 1966 | 21°F 1989 | 14% | 0% |
| Dec 23 | 67°F | 45°F | 89°F 2004 | 10°F 1989 | 14% | 0% |
| Dec 24 | 67°F | 45°F | 84°F 1964 | 13°F 1989 | 14% | 0% |
| Dec 25 | 67°F | 45°F | 89°F 1964 | 21°F 1983 | 14% | 0% |
| Dec 26 | 66°F | 45°F | 80°F 2003 | 13°F 1983 | 14% | 0% |
| Dec 27 | 66°F | 45°F | 90°F 2008 | 20°F 1983 | 14% | 0% |
| Dec 28 | 66°F | 45°F | 83°F 1973 | 27°F 1961 | 14% | 0% |
| Dec 29 | 66°F | 45°F | 83°F 1970 | 25°F 1983 | 14% | 0% |
| Dec 30 | 66°F | 45°F | 88°F 1973 | 15°F 1983 | 14% | 0% |
| Dec 31 | 66°F | 45°F | 83°F 1999 | 23°F 1983 | 14% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CST).
- December 1
- sunrise 7:04 AM, sunset 5:34 PM
- December 31
- sunrise 7:21 AM, sunset 5:45 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00418354 (Sinton), public domain. Records: NOAA GHCN-Daily, station USC00418354, 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.