Lake Mead Weather in May
May is one of the perfect months to visit Lake Mead, with daytime temperatures of 33°C (91°F) and lows of 18°C (64°F) at night. Rainfall is minimal, averaging just 2.8 mm (0.1 in) for the month.
Rainfall in Lake Mead in May
You can expect rain on around a single day based on historical patterns, with 2.8 mm (0.1 in) average for the month. On the rare occasion it rains this month, it usually amounts to very little.
Temperature in Lake Mead in May
If you're visiting Lake Mead in May, expect perfect temperatures with highs of 33°C (91°F) and overnight lows of 18°C (64°F). The hottest part of the day is usually in the afternoon, so lighter clothing can help you stay comfortable. Nights cool down to 18°C (64°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Lake Mead in May
The city usually sees around 386 hours of sunlight, indicating many sunny days — a great month for sightseeing.Our weather planner can help you find worldwide destinations with pleasant weather during this period. February, March, April, October and November typically offer the best weather for Lake Mead.
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 May
Min Temperature
18°C (64°F)
Max Temperature
33°C (91°F)
Chance of Rain
3%
Precipitation
2.8 mm (0.1 in)
Rainy days
a single day
Humidity
22% *
Sunshine
386 hours *
Percentage Sunshine
89% *
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Lake Mead typically rise from around 29°C (84°F) at the start of May to approximately 34°C (93°F) by the end. Nights are pleasant, with lows typically ranging from 16°C (61°F) to 21°C (70°F).
Average temperatures in May
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 May
Historical weather for Lake Mead in May
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 May
According to our 50 years of weather records for Lake Mead, the following extremes were recorded between 1976 and 2026.
- On May 28, 2003, temperatures climbed to 43°C (109°F), marking the warmest May day on record.
- Nighttime temperatures dropped to 7°C (45°F) on May 10, 1977, marking the coldest May night on record.
Best Places in the United States of America in May
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 May →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Lake Mead in May
Hot weather in May means keeping cool is the priority. Loose-fitting clothes in natural fabrics work best. Pack plenty of shorts, tank tops, and breathable shirts. Don't forget a hat, swimwear, and comfortable sandals. With minimal rainfall expected, you can leave the rain gear at home. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Lake Mead in May
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.
