Plano, TX weather in December
December in Plano: cool, with some rain. Highs 59°F, lows 40°F, about 8 wet days and about 0.6 in of snow. It is one of the coolest months in Plano.
- Normal high
- 59°F
- Normal low
- 40°F
- Wet days
- 8
- 3.4 in total
- Snowfall
- 0.6 in
- snow on the ground 1 day
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 63°F | 57°F |
| Normal low | 43°F | 38°F |
| Chance of a wet day | 23% | 26% |
| Sunrise / sunset | 7:11 am / 5:19 pm | 7:29 am / 5:29 pm |
| Daylight | 10.1 h | 10.0 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Central Time).
A typical December day
- 6 am42°Fdew point 36°F
- 9 am45°Fdew point 37°F
- Noon53°Fdew point 36°F
- 3 pm56°Fdew point 36°F
- 6 pm52°Fdew point 36°F
- 9 pm48°Fdew point 36°F
NOAA hourly normals (local standard time) from Dallas Ft Worth Airport (20 mi away); average wind 10 mph; clear or few clouds in 39% of daytime hours, mostly cloudy or overcast in 50%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F9 of 31
- Hot dayshigh 90°F or more0 of 31
- Muggy daysdaily mean dew point 65°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow8 of 31
- Notable rainat least 0.10 in4 of 31
- Freezing nightslow 32°F or below7 of 31
- Snow on the groundsnow depth 1 in or more1 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain and snow in December
Normal precipitation is 3.4 in; a dry December brings about 1.8 in and a wet one about 4.8 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more. Normal snowfall is 0.6 in.
How December varies from year to year
- Warmest December, 1991-20202015: average high 64°F
- Coolest December2000: average high 49°F
- Wettest December1991: 9.3 in
- Driest December1996: 0.3 in
- Highest reading88°F (December 3, 2005)
- Lowest reading16°F (December 9, 2005)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
December compared with November and January
| November | December | January | |
|---|---|---|---|
| Normal high | 68°F | 59°F | 58°F |
| Normal low | 48°F | 40°F | 38°F |
| Wet days | 7 | 8 | 8 |
| Comfortable days | 15 | 9 | 9 |
| Daylight | 10.5 h | 10.0 h | 10.3 h |
Highs change by -9°F from November and -1°F into January.
Nearby alternatives in December
- Warmer: The Woodlands, TX210 mi · high 65°F · 10 wet days
- Drier: Wichita Falls, TX120 mi · high 56°F · 5 wet days
- Cooler: Oklahoma City, OK175 mi · high 50°F · 6 wet days
How Plano ranks in December
- Normal high117th warmest of 378 cities; 27th of 38 in Texas
- Wet days137th driest of 378
- Comfortable days94th most of 340
What to pack for Plano in December
- A warm jacket – lows near 40°F, highs near 59°F
Heating and cooling
December has 487 heating degree days and 6 cooling degree days (base 65°F), 10% of the year's total heating and cooling demand.
Questions
How cold is Plano in December?
The normal high is 59°F and the normal low is 40°F. From 1991 to 2020 the coldest December reading was 16°F (most recently on December 9, 2005).
Does it rain a lot in Plano in December?
About 8 days in December have at least 0.01 in of precipitation, and the normal total is 3.4 in. The wettest December in 1991-2020 was in 1991 (9.4 in); the driest was in 1996 (0.3 in).
Does it snow in Plano in December?
Yes. Normal snowfall in December is 0.6 in, and snow covers the ground on about 1 day.
Is December a good time to visit Plano?
December ranks 6th of 12 months on our comfort score for Plano (55 out of 100). It has about 9 comfortable days. The best months are March and April.
Where the numbers come from
- Temperature: Dallas Love Fld (USW00013960), 15 mi SW of the city center, 440 ft (228 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Rain and frost dates: Richardson (USC00417588), 3.0 mi WSW of the city center, 678 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Frisco (USC00413370), 13 mi NNW of the city center, 747 ft (79 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour and cloud cover: Dallas Ft Worth Airport (USW00003927), 20 mi WSW of the city center, 560 ft (108 ft lower than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Dallas/Ft Worth International Airport (722590-03927), 21 mi WSW of the city center, 544 ft (124 ft lower than the city). Hourly observations, 1991-2020.