Climate averages 1991–2020
West Valley City weather
in December.
A cold month with moderate precipitation: the 11th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cold month in West Valley City: daytime highs average 2.0°C and nights cool to about -7.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 49 mm of precipitation on roughly 9 days, which makes December a month with moderate precipitation (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 19 min on an average December day.
The nearest other city in this atlas is West Jordan (11 km away). In December its highs average 1.7°C, about as warm as West Valley City, with 45 mm of precipitation.
Among the 498 cities listed in the United States, West Valley City ranks joint 447th of 498 for the warmest December highs and joint 132nd of 498 for the driest December (precipitation, lowest first). The mean December high of those 498 cities is 10.5°C; West Valley City is 8.6°C cooler than that mean.
From December to January, average highs fall by 0.3°C to 1.7°C, and monthly precipitation rises from 49 mm to 52 mm.
The annual picture
December in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
West Valley City climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.7°C-7.1°C | -7.1°C | 52 | 9.7 | 9.610 h |
| February | 4.1°C-5.1°C | -5.1°C | 45 | 8.2 | 10.611 h |
| March | 9.9°C-1.3°C | -1.3°C | 50 | 9.5 | 11.912 h |
| April | 14.4°C2.9°C | 2.9°C | 67 | 11.2 | 13.313 h |
| May | 20.4°C7.9°C | 7.9°C | 56 | 9.1 | 14.414 h |
| June | 26.9°C13.3°C | 13.3°C | 27 | 4.4 | 15.015 h |
| July | 32.5°C18.4°C | 18.4°C | 11 | 2.8 | 14.815 h |
| August | 31.5°C17.7°C | 17.7°C | 12 | 3.4 | 13.814 h |
| September | 25.4°C12.3°C | 12.3°C | 34 | 4.7 | 12.513 h |
| October | 17.0°C5.4°C | 5.4°C | 45 | 6.6 | 11.211 h |
| November | 8.6°C-1.7°C | -1.7°C | 44 | 8.2 | 10.010 h |
| December, selected | 2.0°C-7.0°C | -7.0°C | 49 | 8.9 | 9.39 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- West Jordan in DecemberUnited States · 11 kmHigh 1.7°C · Low -8.1°C · 45 mm precipitation
- Salt Lake City in DecemberUnited States · 12 kmHigh 2.3°C · Low -7.3°C · 49 mm rain
- Layton in DecemberUnited States · 41 kmHigh 1.8°C · Low -7.6°C · 51 mm precipitation
- Orem in DecemberUnited States · 51 kmHigh 1.5°C · Low -8.6°C · 49 mm precipitation
- Provo in DecemberUnited States · 59 kmHigh 1.5°C · Low -8.3°C · 49 mm precipitation
- Ogden in DecemberUnited States · 59 kmHigh 1.8°C · Low -7.9°C · 55 mm precipitation
- Saint George in DecemberUnited States · 422 kmHigh 9.9°C · Low 0.2°C · 28 mm rain
- Boise in DecemberUnited States · 475 kmHigh 3.7°C · Low -4.1°C · 50 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for West Valley City) is explained once on the West Valley City year overview and on the Sources, method and limits page.
Salt Lake City lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.