Mercury Desert Rock Airport weather in December: Mercury Desert Rock Airport, Nevada: normal highs, lows, rain and records for December
Mercury Desert Rock Airport in December has a normal high of 55°F and a normal low of 32°F, a daily mean of 44°F, falling from 58°F on the 1st to 55°F by the 31st. Measurable precipitation falls on 3 days in a normal December, 0.63 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 13°C and low of 0°C, 16 mm of precipitation and 1 cm of snow in December.
- NOAA stationMercury Desert Rock Airport
- Station IDUSW00003160
- Location36.62°N 116.03°W
- Elevation3,230 ft (985 m)
- Jan 57° 33°
- Feb 60° 36°
- Mar 67° 41°
- Apr 74° 47°
- May 84° 55°
- Jun 95° 64°
- Jul 101° 71°
- Aug 99° 70°
- Sep 91° 62°
- Oct 78° 50°
- Nov 65° 39°
- Dec 55° 32°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Mercury Desert Rock Airport in December?
The normal high is 55°F and the normal low 32°F, for a daily mean of 43.6°F. December is 8.0°F cooler than November and 1.4°F cooler than January. December is the 12th warmest month of the year in Mercury Desert Rock Airport and the 3rd wettest. Across the month the normal high falls 3°F, from 58°F on December 1 to 55°F on December 31. From one year to the next December's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Decembers in three average between 42°F and 46°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 12%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| December 1 | 58°F | 34°F | 9% | 4% |
| December 8 | 56°F | 32°F | 10% | 5% |
| December 15 | 54°F | 32°F | 11% | 5% |
| December 22 | 54°F | 32°F | 12% | 6% |
| December 31 | 55°F | 32°F | 12% | 7% |
Every day of December: normal high, low and chance of precipitation (warmest afternoon December 1, coldest night December 17)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| December 1 | 58°F | 34°F | 9% | 4% | 9 h 50 min |
| December 2 | 57°F | 33°F | 9% | 4% | 9 h 50 min |
| December 3 | 57°F | 33°F | 9% | 4% | 9 h 50 min |
| December 4 | 57°F | 33°F | 10% | 4% | 9 h 50 min |
| December 5 | 56°F | 33°F | 10% | 4% | 9 h 50 min |
| December 6 | 56°F | 33°F | 10% | 4% | 9 h 50 min |
| December 7 | 56°F | 33°F | 10% | 5% | 9 h 50 min |
| December 8 | 56°F | 32°F | 10% | 5% | 9 h 40 min |
| December 9 | 55°F | 32°F | 10% | 5% | 9 h 40 min |
| December 10 | 55°F | 32°F | 10% | 5% | 9 h 40 min |
| December 11 | 55°F | 32°F | 10% | 5% | 9 h 40 min |
| December 12 | 55°F | 32°F | 11% | 5% | 9 h 40 min |
| December 13 | 55°F | 32°F | 11% | 5% | 9 h 40 min |
| December 14 | 55°F | 32°F | 11% | 5% | 9 h 40 min |
| December 15 | 54°F | 32°F | 11% | 5% | 9 h 40 min |
| December 16 | 54°F | 32°F | 11% | 6% | 9 h 40 min |
| December 17 | 54°F | 32°F | 11% | 6% | 9 h 40 min |
| December 18 | 54°F | 32°F | 11% | 6% | 9 h 40 min |
| December 19 | 54°F | 32°F | 11% | 6% | 9 h 40 min |
| December 20 | 54°F | 32°F | 11% | 6% | 9 h 40 min |
| December 21 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 22 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 23 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 24 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 25 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 26 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 27 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 28 | 54°F | 32°F | 12% | 6% | 9 h 40 min |
| December 29 | 55°F | 32°F | 12% | 6% | 9 h 40 min |
| December 30 | 55°F | 32°F | 12% | 6% | 9 h 40 min |
| December 31 | 55°F | 32°F | 12% | 7% | 9 h 40 min |
- Normal high
- 55°FDecember average
- Normal low
- 32°FDecember average
- Precipitation
- 0.63 inmonth total
- Days with precipitation
- 30.01 inch or more
- Snowfall
- 0.2 inmonth total
- Nights at 32°F or colder
- 16
- Daylight
- 9 h 50 min to 9 h 40 minDecember 1 to December 31
- Days at 70°F or more
- 1
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00003160; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain or snow in Mercury Desert Rock Airport in December?
On a given December day the chance of 0.01 inch or more is 11% on average, highest around December 31 (12%). In all, 0.63 in falls on 3 days of a normal December.
In a normal December in Mercury Desert Rock Airport, 16 nights fall to freezing and snowfall averages 0.2 inches.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00003160.
How humid and windy is Mercury Desert Rock Airport in December?
At 3 p.m. the normal temperature is 52°F with 27% relative humidity and a dew point of 19°F; at 6 a.m. it is 36°F with 49% humidity. The wind averages 7.8 mph, most often from the southeast in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 36°F | 19°F | 49% | 6.7 mph | – |
| 9 a.m. | 44°F | 20°F | 38% | 7.6 mph | 73% |
| noon | 51°F | 20°F | 29% | 9.5 mph | 67% |
| 3 p.m. | 52°F | 19°F | 27% | 10.2 mph | 66% |
| 6 p.m. | 45°F | 20°F | 37% | 8.0 mph | – |
| 9 p.m. | 41°F | 20°F | 43% | 7.0 mph | 78% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00003160. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for December in Mercury Desert Rock Airport?
The warmest December temperature on this station's record (since 1978) is 75°F, on December 11, 2025; the coldest is 6°F, on December 22, 1990. The wettest December brought 5.00 in (2010); the snowiest, 6.6 inches (1984).
The December mean against the 1991-2020 normal of 43.6°F: 2021 43.7°F (+0.1), 2022 43.9°F (+0.3), 2024 48.8°F (+5.2), 2025 50.6°F (+7.0). 4 of 4 ran warmer than normal.
| December | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 43.7°F | +0.1°F | 0.75 in |
| 2022 | 43.9°F | +0.3°F | 0.15 in |
| 2024 | 48.8°F | +5.2°F | 0.05 in |
| 2025 | 50.6°F | +7.0°F | 0.90 in |
Source: records: ACIS, station USW00003160; recent months: ACIS, station USW00003160. Records and recent months use complete months only.
How does December in Mercury Desert Rock Airport compare across Nevada?
Across the 55 places PlainClimate covers in Nevada, December normal highs run from 37°F in Lamoille to 64°F in Laughlin; Mercury Desert Rock Airport's is 55°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Mercury Desert Rock Airport in November65°F by day, 39°F at night
- Mercury Desert Rock Airport in January57°F by day, 33°F at night
- Mercury Desert Rock Airport through the yearEvery month, frost dates, records and recent years
- Nevada in DecemberThe statewide normal and the warmest and coolest places
- Laughlin: Nevada's warmest Decembernormal high 64°F