Hoover Dam Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Hoover Dam year round climate
Spring (March–May): 57–77°F on average, mild climate, more rainfall in March, other months dry. Common activities: Visit Hoover Dam, hike along the Colorado River. Recommended clothing: Light jacket, long-sleeved shirt, possibly rain gear in March.
Summer (June–August): 87–95°F on average, hot and dry, hottest in July. Common activities: Visit Hoover Dam in the early morning or evening, avoid midday sun. Recommended clothing: Light and breathable clothing, hat, sunglasses, sunscreen.
Autumn (September–November): 72–83°F on average, pleasant and comfortable climate, dry with little rain. Common activities: Hiking, photography, enjoying the views of the Colorado River. Recommended clothing: Long-sleeved shirt, light jacket.
Winter (December–February): 48–51°F on average, cold and dry, little rain. Common activities: Visit indoor exhibits at Hoover Dam. Recommended clothing: Warm jacket, hat, gloves, scarf.
Hoover Dam climatological average
Annual average temperature: approx. 69.8°F / Annual rainfall: approx. 118 mm / Summer humidity: 20%–30% / Rainiest month: March
Hoover Dam monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
48°F
24
February
51.1°F
23.3
March
57.4°F
27
April
68°F
0.5
May
77.2°F
1.3
June
87.6°F
0.8
July
95.4°F
4
August
90°F
19.2
September
83.3°F
9.2
October
72.1°F
0.8
November
54°F
3.8
December
50°F
4.7
Hoover Dam weather for the next seven days
12/17
Wednesday
Sunny
72.7°F/51.3°F
12/18
Thursday
Sunny
64.2°F/42.1°F
12/19
Friday
Partly Cloudy
63.3°F/42.6°F
12/20
Saturday
Sunny
67.3°F/51.9°F
12/21
Sunday
Sunny
66°F/54.4°F
12/22
Monday
Sunny
69.6°F/53.2°F
12/23
Tuesday
Sunny
71.6°F/54.8°F
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