Boulder City, Nevada Weather
Boulder City weather this week
Over the next 7 days in Boulder City, daytime highs range from 14°C to 19°C and night-time lows from 8°C to 11°C. The warmest afternoon is likely tomorrow at 19°C, while the coolest night is expected on Wednesday night at 8°C. Temperatures trend cooler through the week, dropping by about 3°C.
Rain is most likely Tuesday and Thursday, with roughly 3.6 mm forecast in total over the week.
It turns breezy on Tuesday, with winds reaching about 42 km/h — secure loose objects on rooftops and balconies. UV levels stay moderate or lower, peaking at 4. Average humidity is a comfortable 50% or so.
| Day | Conditions | High / Low | Rain chance | Rain | Max wind |
|---|---|---|---|---|---|
| Today (Sunday) | Overcast | 19° / 10° | 1% | 0.0 mm | 11 km/h |
| Tomorrow (Monday) | Light drizzle | 19° / 10° | 34% | 0.1 mm | 25 km/h |
| Tuesday | Drizzle | 17° / 10° | 44% | 3.2 mm | 42 km/h |
| Wednesday | Overcast | 14° / 8° | 3% | 0.0 mm | 9 km/h |
| Thursday | Light drizzle | 18° / 11° | 53% | 0.1 mm | 39 km/h |
| Friday | Light drizzle | 14° / 9° | 32% | 0.2 mm | 22 km/h |
| Saturday | Overcast | 15° / 9° | 0% | 0.0 mm | 6 km/h |
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Today's outlook for Boulder City
At 00:00 local time it is 11°C in Boulder City under clear skies, feeling like 9°C. Today's forecast high is 19°C and the low is 10°C, and the day overall looks overcast. Rain is unlikely today (1% chance). Winds are blowing at about 10 km/h from the south-east. Humidity is 65%.
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Climate of Boulder City: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Boulder City, with average daytime highs around 41°C. December is the coolest, when nights typically fall to about 1°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 40°C, so the seasons feel very different from each other.
The area receives about 150 mm of rain in a typical year. Rainfall is modest in every month; February is the wettest at about 23 mm. The driest stretch is March to January, with under 20 mm a month.
For outdoor plans and travel, March to April and October to November usually offer the most comfortable weather in Boulder City, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | 14° | 1° | 18 mm | 46% |
| Feb | 16° | 3° | 23 mm | 43% |
| Mar | 22° | 7° | 12 mm | 37% |
| Apr | 26° | 11° | 8 mm | 29% |
| May | 32° | 16° | 3 mm | 22% |
| Jun | 39° | 22° | 1 mm | 14% |
| Jul | 41° | 26° | 15 mm | 22% |
| Aug | 40° | 25° | 15 mm | 24% |
| Sep | 35° | 21° | 9 mm | 23% |
| Oct | 27° | 13° | 13 mm | 28% |
| Nov | 20° | 6° | 12 mm | 35% |
| Dec | 13° | 1° | 18 mm | 46% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Boulder City. Values describe typical conditions, not a forecast.
About Boulder City weather
Boulder City is one of many towns in Nevada's arid, high-desert climate, one of the driest states in the US, about 35 km south-east of Las Vegas. Before the rains arrive, there's hot, dry summers (June–August), especially in the south around Las Vegas. Cooler months mean cold nights and mild days, colder in the northern high desert. This page shows live, auto-refreshing weather for Boulder City: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Los_Angeles.
Frequently asked questions
Boulder City is about 35 km south-east of Las Vegas, in Nevada.
Boulder City sees cold nights and mild days, colder in the northern high desert.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Boulder City's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Boulder City, with average daytime highs of about 41°C and nights around 26°C. Afternoons above 40°C are common then, so heatwave precautions matter.
The coldest nights come in December, when the average low is about 1°C and daytime highs reach around 13°C. Frost is possible on clear, calm nights.
Boulder City receives about 150 mm of rain in a typical year. February is the wettest month at roughly 23 mm; no month averages more than 100 mm.
March to April and October to November usually offer the most comfortable weather in Boulder City, with mild daytime temperatures and little rain.
In November Boulder City typically sees daytime highs near 20°C and lows near 6°C, with about 12 mm of rain over the month and average humidity around 35%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
Live temperature for Boulder City is shown at the top of this page and refreshes automatically — see the hourly breakdown below for how it changes through the day.
Boulder City's day-to-day weather follows the broader pattern of Nevada described above. See the hourly weather forecast or the air quality index for more detail.