Lake Mead Weather in December
In Lake Mead, December brings moderate daytime temperatures around 14°C (57°F), with nights cooling to 3°C (37°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Lake Mead in December
The month brings the most rain, so be prepared with an umbrella for the occasional shower. Records from the past 30 years suggest around 5 days of rain, with 29 mm (1.1 in) average for the month. When rain does fall, showers tend to be light and brief. Most days will be dry.
Temperature in Lake Mead in December
In December, Lake Mead gets moderate temperatures, with highs of 14°C (57°F). Nights cool to around 3°C (37°F). During December, the winter season is in full swing. This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 3°C (37°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets. With moderate temperatures, December stands out as the chilliest month of the year.
Sunshine in Lake Mead in December
Expect sunny days throughout the month, with an estimated 250 hours of sunshine. Despite the cool temperatures, the sunny skies make it a pleasant time to visit Lake Mead.Should you favor a climate that's both dry and comfortably warm, February, March, April, October and November typically offer the most agreeable circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Lake Mead's climate page.
Lake Mead Temperature in December
Min Temperature
3°C (37°F)
Max Temperature
14°C (57°F)
Chance of Rain
17%
Precipitation
29 mm (1.1 in)
Rainy days
5 days
Humidity
45% *
Sunshine
250 hours *
Percentage Sunshine
78% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lake Mead typically stay consistent throughout December, with daily highs averaging around 14°C (57°F). Nights are cold, with lows typically ranging from 2°C (36°F) to 5°C (41°F).
Average temperatures in December
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in December
Historical weather for Lake Mead in December
Browse day-by-day weather records for Lake Mead spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Lake Mead historical weather extremes in December
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Lake Mead.
- The hottest December day on record in Lake Mead reached 24°C (75°F) (December 15, 1980).
- Lake Mead experienced its chilliest December day on December 23, 1990, reaching only 0°C (32°F).
- The lowest overnight temperature recorded in December was -11°C (12°F) (December 23, 1990).
Best Places in the United States of America in December
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in December →
perfect weather
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tolerable
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What to Wear in Lake Mead in December
The weather can swing between comfortable and chilly in December, so flexibility is key. Pack a variety of tops, at least one warm layer, and both shorts and long pants. This gives you options no matter what the day brings. Light rain is possible, so consider bringing a small umbrella or rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Lake Mead in December
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Lake Mead's climate page.
Temperature Rainfall Sunshine Humidity
See the full Lake Mead climate overview or explore weather in the United States of America.
