Hoover Dam & Boulder City, NV
Hoover Dam, Nevada - Clément Bardot, CC BY-SA 4.0, via Wikimedia Commons
Today’s Forecast:
☁
70°F
High: 77°
|
Low: 62°
Current Temperature
Mostly Cloudy
⚠️
High Wind Warning
High Wind Warning issued October 11 at 4:15AM PDT until October 11 at 8:00PM PDT by NWS Las Vegas NV (Expires: October 11, 2026 10:00 pm)
Show Alert Details & Instructions
Description:
* WHAT...South winds 35 to 45 mph with gusts of 60 to 70 mph
expected.
* WHERE...The Colorado River Valley including Lake Mead, Lake Mohave,
Lake Havasu, Needles, Laughlin, and Bullhead City. Mohave County,
southern and northeastern Clark County, the Spring Mountains, and
the Sheep Range.
* WHEN...Until 8 PM PDT /8 PM MST/ this evening.
* IMPACTS...Damaging winds will blow down trees and power lines.
Widespread power outages are expected. Travel will be difficult,
especially for high profile vehicles. Expect dangerous boating
conditions for all water craft on area lakes.
Instructions:
People are urged to secure loose objects that could be blown around
or damaged by the wind.
⚠️
Flood Watch
Flood Watch issued October 10 at 10:37PM PDT until October 12 at 5:00AM PDT by NWS Las Vegas NV (Expires: October 12, 2026 7:00 am)
Show Alert Details & Instructions
Description:
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of northwest Arizona, including the following
areas, Hualapai Mountains, Lake Havasu and Fort Mohave, Lake Mead -
AZ side, Lake Mohave - AZ side, Northwest Deserts and Northwest
Plateau, southeast California, including the following areas, Cadiz
Basin, Death Valley National Park, Eastern Mojave Desert, Morongo
Basin, San Bernardino County-Upper Colorado River Valley and
Western Mojave Desert, and Nevada, including the following areas,
Esmeralda and Central Nye County, Lake Mead - NV side, Lake Mohave
- NV side, Las Vegas Valley, Lincoln County, Northeast Clark
County, Sheep Range, Southern Clark County, Spring Mountains-Red
Rock Canyon and Western Clark and Southern Nye County.
* WHEN...Through late Sunday night.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Flooding may occur in poor drainage and urban areas. Low-water
crossings may be flooded.
* ADDITIONAL DETAILS...
- Incoming tropical moisture will lead to widespread shower and
thunderstorm activity, some of which may cause flash flooding.
- http://www.weather.gov/safety/flood
Instructions:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Today:Patchy blowing dust and showers and thunderstorms. Cloudy. High near 77, with temperatures falling to around 65 in the afternoon. South wind 23 to 37 mph, with gusts as high as 55 mph. Chance of precipitation is 80%.
Tonight:Isolated showers and thunderstorms before 5am. Mostly cloudy. Low around 62, with temperatures rising to around 72 overnight. South southeast wind 14 to 23 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
Columbus Day:Isolated rain showers between 10am and 11am, then scattered showers and thunderstorms between 11am and 3pm, then scattered showers and thunderstorms. Mostly sunny. High near 71, with temperatures falling to around 65 in the afternoon. South wind 13 to 17 mph, with gusts as high as 31 mph. Chance of precipitation is 40%.
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Today’s Report:
Hiking
Not Recommended
21
/100
Not Recommended for hiking. High near 68°F. Risk of rain later today (42%). Light wind (17 mph). Thunderstorms forecast later today.
- Temp: Favorable conditions
- Rain: Marginal weather factor
- Wind: Favorable conditions
- Thunderstorm: Marginal weather factor
- Alert: Unfavorable weather factor
- Alert: Unfavorable weather factor
⚠️ Active weather alerts affect this activity!
Tomorrow's Outlook:
Not Recommended
23/100
Not Recommended for hiking. High near 60°F. Low rain risk (6%). Light wind (7 mph). Slight chance of thunderstorms.
Biking
Not Recommended
17
/100
Not Recommended for biking. High near 68°F. Risk of rain later today (42%). Breezy winds (17 mph). Thunderstorms forecast later today.
- Temp: Favorable conditions
- Rain: Marginal weather factor
- Wind: Marginal weather factor
- Thunderstorm: Marginal weather factor
- Alert: Unfavorable weather factor
- Alert: Unfavorable weather factor
⚠️ Active weather alerts affect this activity!
Tomorrow's Outlook:
Not Recommended
23/100
Not Recommended for biking. High near 60°F. Low rain risk (6%). Light wind (7 mph). Slight chance of thunderstorms.
Outdoor Events / Activities
Not Recommended
17
/100
Not Recommended for outdoor events / activities. High near 68°F. Risk of rain later today (42%). Breezy winds (17 mph). Thunderstorms forecast later today.
- Temp: Favorable conditions
- Rain: Marginal weather factor
- Wind: Marginal weather factor
- Thunderstorm: Marginal weather factor
- Alert: Unfavorable weather factor
⚠️ Active weather alerts affect this activity!
Tomorrow's Outlook:
Not Recommended
23/100
Not Recommended for outdoor events / activities. High near 60°F. Low rain risk (6%). Light wind (7 mph). Slight chance of thunderstorms.
About Hoover Dam & Boulder City
Hoover Dam & Boulder City brings weather-sensitive recreation together through dam viewpoints, the Historic Railroad Trail, cycling loops, parks, events, and visitor access.
Planning an Outing at Hoover Dam & Boulder City
Use the coolest or calmest part of the day for the main objective and keep a shorter alternative ready.
Weather Tips for Hoover Dam & Boulder City
- Avoid long exposed activity during the hottest part of the day and carry more water than expected.
- Check excessive-heat, wind, dust, smoke, lightning, and flash-flood forecasts before leaving.
- Remote roads may require high clearance, fuel planning, navigation, and an alternate route after storms.
- Hot pavement, rock, and sand retain heat after sunset; shade and evening timing matter as much as the daily high.
Nearby Towns and Areas
Use this forecast as practical context for outdoor plans near:
- Lake Mead
- Black Canyon
- Hemenway Harbor
- River Mountains
- Arizona spillway approaches
- Henderson
Adjust the Day to the Forecast
Keep the main objective flexible and turn back before weather, road, water, or trail conditions exceed the plan.
7-Day Forecast for Hoover Dam & Boulder City
Hoover Dam & Boulder City Weather by Season
Winter
Winter at Hoover Dam & Boulder City usually supports daytime activity, though cold fronts, freezing nights, wind, and short daylight still affect exposed plans.
Spring
Spring brings comfortable mornings, stronger wind, dust, wildflowers in favorable years, and occasional wash flooding.
Summer
Summer heat dominates planning at Hoover Dam & Boulder City. Use very early or evening windows, monitor monsoon storms, and avoid committing to long exposed routes.
Fall
Fall gradually restores comfortable hiking and camping weather, while smoke, dry fuels, wind, and sudden cold fronts remain possible.
Key Climate Data Points
- Annual average temperature: about 48–58°F across Nevada’s high-desert basins and valleys.
- Annual snowfall: generally light to moderate in valleys, with much more in nearby ranges.
- Warmest months: July is usually warmest, with elevation strongly moderating daytime heat.
- Coolest months: December and January are generally coolest.
- Wettest season: Winter is often wettest in western and northern Nevada, while southern and eastern areas may also receive summer monsoon moisture.
- Driest season: Late spring into early summer is commonly driest before monsoon influence develops.
- Best outdoor window: Spring and fall for exposed desert activity.