Climate and monthly weather forecastBoulder City, NV
Climate and monthly weather forecast
The climate of Boulder City
Nestled within the state of Nevada, the U.S, Boulder City demonstrates a climatic condition that falls under the BWh classification on the Köppen climate scale - subtropical desert. This type of climate typically experiences high temperatures, low relative humidity percentages, and quite minimal precipitation throughout the year.Boulder City's climate exhibits a wide range of temperatures, from highs of 101.7°F (38.7°C) in July, to lows of 39.9°F (4.4°C) in December. Significant temperature fluctuations are observed, with the warmest period extending from June to September. Humidity also follows a varying pattern. The highest figures show up in December and January, at 44% and 46% respectively, while the June records, the lowest level at 14%.
Notably, the city experiences little rainfall, the average monthly rainfall measuring less than 0.51" (13mm) per month from February to December, except in June where the city records no rainfall. Very minimal snowfall is noted in this region, averaging to essentially no minutes of snowfall over the year.
Wind speeds vary minimally across the year, with average speeds fluctuating around the 7mph (11.3km/h) to 9.6mph (15.4km/h). Pressure too experiences minor fluctuations, hovering around 29.77" (756mm) to 30.14" (766mm) throughout the year.
The best time to visit Boulder City
For travelers looking to enjoy warm weather, the perfect time to visit Boulder City would be from June through September, with July reaching the highest peak of 101.7°F (38.7°C). Tourists can comfortably engage in outdoor activities as these months also receive the highest amounts of daylight, averaging 14.1 hours to 14.6 hours, and with very minimal chances of rain.The worst time to visit Boulder City
The least favorable period to visit Boulder City would be in December and January. Temperatures drop to a low of 39.9°F (4.4°C) and 40.6°F (4.8°C) respectively with the only slight snowfall of the year commonly experienced in February, which might be detrimental for tourists unaccustomed to cold weather.Spring weather in Boulder City
Spring in Boulder City encompasses the months of March to May. During this period, temperatures gradually rise from an average high of 68.9°F (20.5°C) in March to a high of 85.3°F (29.6°C) in May. Rainfall during this season is minimal, with an average ranging from 0.16" (4mm) to 0.39" (10mm). Visitors during spring can enjoy approximately 12 hours to 14.1 hours of daylight and benefit from the low relative humidity of 22% to 30%.Summer weather in Boulder City
Summers are undeniably hot in Boulder City. The period from June to August sees a rise in temperatures to scorching levels, with July peaking at 101.7°F (38.7°C). Humidity is at its lowest during these months, providing some relief from the intense heat. There is also no record of rainfall in June, making the weather ideal for outdoor activities despite the high temperatures.Autumn weather in Boulder City
September to November usher in the autumn season in Boulder City. A gradual decrease in temperatures is noticed during these months. Daylight hours lean towards the lower end, ranging from 11.3 hours to 12.4 hours. Rainfall during this period is skim, with an average monthly rain of just 0.31" (8mm) to 0.51" (13mm).Winter weather in Boulder City
Boulder City's winter months, defined from December to February, offer cold weather with average lows dipping as much as to 39.9°F (4.4°C). Interestingly, the relative humidity percentages for these months are the highest of the year, ranging between 40% and 46%. Minimal precipitation records in the form of average rainfall from 0.39" (10mm) to 0.51" (13mm), with very slight snowfall observed in February. The daylight hours descend to its lowest in December, amounting to 9.8 hours.Weather in January
January ushers in the New Year in Boulder City with fair temperatures averaging to a high of 55°F (12.8°C) and a low of 40.6°F (4.8°C). This period marks a calm before the city starts to experience a gradual increase in temperatures. Weather in January »Weather in February
As Boulder City glides into February, temperatures subtly shift upwards from those in January. The increase is gentle, enough to be appreciated but not drastic enough to dramatically change weather conditions. Rainfall accumulation and frequency do increase slightly in this month but it’s barely noticeable on most days. Weather in February »Weather in March
The arrival of March in Boulder City brings with it signs of spring, an upgrade from the cold of January and a slight rise from the weather experienced in February. Days become progressively warmer with a high of 68.9°F (20.5°C), making March the harbinger of the beautiful spring season. Weather in March »Weather in April
April in Boulder City sees a continued warming trend, yet the rise in temperatures from March is substantial and more pronounced. The month is predominantly sunny resulting in longer daylight hours. It is considered as one of the windiest months of the year, with speeds reaching up to 9.4mph (15.1km/h) on average. Weather in April »Weather in May
The weather in May marks the transition from spring to summer in Boulder City. The sun's rays become stronger and daylight hours extend even further. Humidity takes a significant drop as the heat escalates. The calm weather, combined with the negligible rainfall, makes May an ideal month for outdoor festivities and events. Weather in May »Weather in June
June serves as the gateway to the sweltering desert summer heat in Boulder City. The transformation from the mildly warm May days is striking, and the temperatures continue to rise through the roof. This month experiences the longest days of the year with extended hours of sunshine that contribute to the rising heat. Weather in June »Weather in July
July stands out as the hottest month of the year in Boulder City, with temperatures soaring to a resounding high of 101.7°F (38.7°C). Welcoming no rain, it becomes the epitome of the dry, desert summer expected in Nevada. The intense heat coincides with the extended daylight hours which put a certain strain on the city's inhabitants. Weather in July »Weather in August
August sustains the high temperatures of July, securing its spot as part of the torrid summer season in Boulder City. Despite a gradual shortening of the daylight hours, this month is not a stranger to triple-digit temperatures. Weather in August »Weather in September
September brings with it a breath of relief for the citizens of Boulder City. The scorching summer heat slowly starts its descent, giving way to lower temperatures throughout the day. While the temperatures are still predominantly high, the transition from the intense summer heat is noticeable to residents. Weather in September »Weather in October
October in Boulder City sees further reduction in temperatures, making it feel much cooler compared to September. The decreasing daylight time and reduction in UV index make for much more pleasant conditions. An increased frequency of rainfall enhances the change of seasons, signaling the arrival of fall. Weather in October »Weather in November
November sees Boulder City transitioning to the colder months of the year. It holds a significant decrease in temperatures from the preceding month of October. The days grow shorter, with evening twilight casting its veil earlier in the day. Weather in November »Weather in December
December brings the coldest temperatures to Boulder City, with an average low of 39.9°F (4.4°C). The reduced temperatures signal the official arrival of winter. The charm that comes with the cooler temperatures, shorter days, and festive atmosphere makes this month particularly significant. Weather in December »Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January is the most humid month in Boulder City, Nevada, with an average relative humidity of 46%.
Throughout the year, there are 40.1 rainfall days, and 4.02" (102mm) of precipitation is accumulated.
In Boulder City, snow does not fall in January, March through December.
In Boulder City, Nevada, during the entire year, snow aggregates up to 0.08" (2mm).
The wettest months are February, November and December, with an average 0.51" (13mm) of rainfall.
February is the only month when snow falls.
The month with the most snowfall in Boulder City is February, when snow falls for 0.2 days and typically aggregates up to 0.08" (2mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Boulder City, Nevada, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
June is the least humid month in Boulder City, Nevada, with an average relative humidity of 14%.
June is the only month when rain does not fall in Boulder City.
The month with the longest days is June, with an average of 14h and 36min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 8.
Boulder City's July weather reaches an average high of 101.7°F (38.7°C) and an average low of 81.7°F (27.6°C), making it the warmest month.
Months with rainfall in Boulder City, Nevada, are January through May, July through December.
The month with the most sunshine in Boulder City, Nevada, is August, with an average of 12.2h of sunshine.
November and December, with an average maximum UV index of 3, are months with the lowest UV index in Boulder City, Nevada.
In Boulder City, the average lowest temperatures are observed in December, with a high of 53.1°F (11.7°C) and a low of 39.9°F (4.4°C).
December has the shortest days of the year, with an average of 9h and 48min of daylight.
With an average of 7h of sunshine, December has the least sunshine of the year in Boulder City, Nevada.
Average temperature
Boulder City, NV
The warmest month (with the highest average high temperature) is July (101.7°F).
The month with the lowest average high temperature is December (53.1°F).
The month with the highest average low temperature is July (81.7°F).
The coldest month (with the lowest average low temperature) is December (39.9°F).
Average pressure
Boulder City, NV
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.03"Hg - Average pressure in March:
29.96"Hg - Average pressure in April:
29.87"Hg - Average pressure in May:
29.81"Hg - Average pressure in June:
29.77"Hg
- Average pressure in July:
29.83"Hg - Average pressure in August:
29.84"Hg - Average pressure in September:
29.85"Hg - Average pressure in October:
29.93"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.77"Hg).
Average wind speed
Boulder City, NV
- Average wind speed in January:
5.8mph - Average wind speed in February:
7mph - Average wind speed in March:
8.6mph - Average wind speed in April:
9.4mph - Average wind speed in May:
9.3mph - Average wind speed in June:
9.6mph
The windiest month (with the highest average wind speed) is June (9.6mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity
Boulder City, NV
The month with the highest relative humidity is January (46%).
The month with the lowest relative humidity is June (14%).
Average rainfall
Boulder City, NV
- Average rainfall in January:
0.39" - Average rainfall in February:
0.51" - Average rainfall in March:
0.39" - Average rainfall in April:
0.16" - Average rainfall in May:
0.16" - Average rainfall in June:
0"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.35" - Average rainfall in September:
0.31" - Average rainfall in October:
0.31" - Average rainfall in November:
0.51" - Average rainfall in December:
0.51"
The wettest months (with the highest rainfall) are February, November and December (0.51").
The driest month (with the least rainfall) is June (0").
Average rainfall days
Boulder City, NV
- Average rainfall days in January:
3.5 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
4.7 days - Average rainfall days in April:
3 days - Average rainfall days in May:
2.4 days - Average rainfall days in June:
0.4 days
- Average rainfall days in July:
4.3 days - Average rainfall days in August:
4 days - Average rainfall days in September:
3.8 days - Average rainfall days in October:
2.5 days - Average rainfall days in November:
2.1 days - Average rainfall days in December:
5.3 days
The month with the highest number of rainy days is December (5.3 days).
The month with the least rainy days is June (0.4 days).
Average snowfall
Boulder City, NV
The month with the highest snowfall is February (0.08").
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0").
Average snowfall days
Boulder City, NV
- Average snowfall days in January:
0 days - Average snowfall days in February:
0.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.1 days
The month with the highest number of snowfall days is February (0.2 days).
The months with the least snowfall days are January, March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Boulder City, NV
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 6min - Average daylight in June:
14h and 36min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
7h and 6min - Average sunshine in February:
7h and 12min - Average sunshine in March:
8h and 48min - Average sunshine in April:
11h and 30min - Average sunshine in May:
11h and 54min - Average sunshine in June:
12h and 6min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 12min - Average sunshine in September:
10h and 12min - Average sunshine in October:
9h and 30min - Average sunshine in November:
7h and 24min - Average sunshine in December:
7h and 0min
The month with the most sunshine is August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 7h and 0min).
Average sunshine days
Boulder City, NV
- Average sunshine days in January:
26.4 days - Average sunshine days in February:
23.5 days - Average sunshine days in March:
26.5 days - Average sunshine days in April:
27.1 days - Average sunshine days in May:
27.7 days - Average sunshine days in June:
29.3 days
- Average sunshine days in July:
22.9 days - Average sunshine days in August:
22.9 days - Average sunshine days in September:
24.4 days - Average sunshine days in October:
26.7 days - Average sunshine days in November:
27.2 days - Average sunshine days in December:
25.2 days
The month with the most sunshine days is June (29.3 days).
The months with the least sunshine days are July and August (22.9 days).
Average UV index
Boulder City, NV
The months with the highest UV index are June, July and August (UV index 8).
The months with the lowest UV index are November and December (UV index 3).
Average cloud cover
Boulder City, NV
The month with the most cloud cover is December (Cloud cover 20).
The month with the least cloud cover is June (Cloud cover 5).
Average visibility
Boulder City, NV
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
