St. George, UT weather in December
December in St. George: chilly and mostly dry. Highs 53°F, lows 28°F, rain on about 5 days. This is the depth of winter in St. George.
- Normal high
- 53°F
- Normal low
- 28°F
- Wet days
- 5
- 0.9 in total
- Daylight
- 9.7 h
How December changes from start to finish
| December 1 | December 31 | |
|---|---|---|
| Normal high | 57°F | 52°F |
| Normal low | 30°F | 27°F |
| Chance of a wet day | 13% | 17% |
| Sunrise / sunset | 7:29 am / 5:17 pm | 7:47 am / 5:26 pm |
| Daylight | 9.8 h | 9.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Mountain Time).
What kind of days to expect
- Comfortable dayshigh 65-80°F (temperature only: no humidity station nearby)2 of 31
- Hot dayshigh 90°F or more0 of 31
- Wet daysat least 0.01 in of rain or melted snow5 of 31
- Notable rainat least 0.10 in3 of 31
- Freezing nightslow 32°F or below21 of 31
- Snow on the groundsnow depth 1 in or more0 of 31
Average days per December, counted from daily records for each year 1991-2020.
Rain in December
Normal precipitation is 0.9 in; a dry December brings about 0.3 in and a wet one about 1.1 in (25th and 75th percentiles). Days with half an inch or more are rare. Snow is very rare.
How December varies from year to year
- Warmest December, 1991-20201995: average high 61°F
- Coolest December1992: average high 48°F
- Wettest December2007: 2.9 in
- Driest December1998: no measurable precipitation
- Highest reading70°F (December 4, 2017)
- Lowest reading14°F (December 24, 1998)
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 | 64°F | 53°F | 54°F |
| Normal low | 35°F | 28°F | 28°F |
| Wet days | 3 | 5 | 6 |
| Comfortable days | 15 | 2 | 2 |
| Daylight | 10.2 h | 9.7 h | 9.9 h |
Highs change by -11°F from November and +1°F into January.
Nearby alternatives in December
- Warmer: Furnace Creek, CA187 mi · high 66°F · 2 wet days
- Cooler: Bryce Canyon City, UT88 mi · high 37°F · 6 wet days
How St. George ranks in December
- Normal high176th warmest of 378 cities; 1st of 7 in Utah
- Wet days41st driest of 378
What to pack for St. George in December
- A warm jacket – lows near 28°F, highs near 53°F
- Layers – afternoons near 53°F but nights near 28°F
- A hat and gloves – about 21 freezing nights
Heating and cooling
December has 761 heating degree days and 0 cooling degree days (base 65°F), 14% of the year's total heating and cooling demand.
Questions
How cold is St. George in December?
The normal high is 53°F and the normal low is 28°F. From 1991 to 2020 the coldest December reading was 14°F (December 24, 1998).
Does it rain a lot in St. George in December?
About 5 days in December have at least 0.01 in of precipitation, and the normal total is 0.9 in. The wettest December in 1991-2020 was in 2007 (2.9 in); the driest was in 1998, with no measurable precipitation.
Does it snow in St. George in December?
Snow is very rare: the 1991-2020 normal for December rounds to 0.0 in.
Is December a good time to visit St. George?
December ranks 8th of 12 months on our comfort score for St. George (46 out of 100). It has about 2 comfortable days (judged by temperature only). The best months are March and April.
Where the numbers come from
- Temperature, rain, snowfall, snow depth and frost dates: St George (USC00427516), 1.6 mi NW of the city center, 2,857 ft (161 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Not available for this location: humidity and wind by hour, cloud cover and daily humidity and wind (no station close enough or similar enough in elevation).