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Monthly climate in Boulder City, Nevada, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Boulder City features a hot desert climate (BWh).Temperatures typically range between 10 °C (50 °F) and 35 °C (96 °F) through the year, but rarely can drop to -3 °C (28 °F) or can rise to as high as 47 °C (116 °F).The average annual precipitation amounts to about 149 mm (5.9 inches) and receives 24 rainy days on the 1 mm (0.04 inches) threshold annually.Boulder City enjoys an average of 3647 hours of sunshine throughout the year, and daylight varies from 9 hours 44 minutes to 14 hours 32 minutes per day.

Monthly average temperatures in Boulder City, Nevada, United States §

The warmest months in Boulder City are June, July and August, with daily mean temperatures ranging from 33 to 35 °C (91 - 96 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 53 °F) throughout the day. On average each year, Boulder City experiences 181 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Boulder City, Nevada, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 21°C
(70°F)		 25°C
(77°F)		 33°C
(92°F)		 37°C
(100°F)		 42°C
(108°F)		 47°C
(116°F)		 47°C
(116°F)		 45°C
(114°F)		 45°C
(114°F)		 38°C
(101°F)		 30°C
(86°F)		 24°C
(75°F)
Mean maximum 19°C
(67°F)		 24°C
(75°F)		 29°C
(85°F)		 35°C
(95°F)		 38°C
(102°F)		 42°C
(108°F)		 45°C
(114°F)		 44°C
(112°F)		 43°C
(110°F)		 35°C
(95°F)		 27°C
(81°F)		 20°C
(69°F)
Average high 14°C
(58°F)		 17°C
(63°F)		 22°C
(71°F)		 28°C
(82°F)		 32°C
(89°F)		 39°C
(102°F)		 41°C
(106°F)		 41°C
(105°F)		 36°C
(97°F)		 27°C
(82°F)		 21°C
(70°F)		 14°C
(58°F)
Daily mean 10°C
(50°F)		 12°C
(53°F)		 16°C
(61°F)		 22°C
(71°F)		 26°C
(78°F)		 33°C
(91°F)		 35°C
(96°F)		 35°C
(95°F)		 30°C
(86°F)		 21°C
(71°F)		 15°C
(60°F)		 10°C
(50°F)
Average low 5°C
(42°F)		 7°C
(44°F)		 11°C
(51°F)		 15°C
(60°F)		 19°C
(67°F)		 26°C
(79°F)		 29°C
(85°F)		 28°C
(83°F)		 24°C
(75°F)		 15°C
(60°F)		 10°C
(50°F)		 5°C
(42°F)
Mean minimum 0°C
(33°F)		 0°C
(33°F)		 5°C
(41°F)		 9°C
(49°F)		 12°C
(54°F)		 19°C
(66°F)		 24°C
(75°F)		 24°C
(75°F)		 17°C
(63°F)		 8°C
(47°F)		 4°C
(39°F)		 1°C
(34°F)
Minimum -3°C
(28°F)		 -1°C
(30°F)		 4°C
(39°F)		 8°C
(46°F)		 11°C
(52°F)		 16°C
(61°F)		 23°C
(74°F)		 23°C
(75°F)		 13°C
(55°F)		 2°C
(36°F)		 2°C
(35°F)		 0°C
(33°F)

Compare climate in Boulder City with other places

Compare temperature, precipitation, sunshine, UV index in Boulder City, Nevada, United States with other places around the world.

Monthly average precipitation in Boulder City, Nevada, United States §

Boulder City usually has the most precipitation in January, February and March, with an average of 3 rainy days and 21 mm (0.8 inches) of precipitation per month.The driest months in Boulder City are April, June and September. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Boulder City, Nevada, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 21 (0.8) 21 (0.8) 20 (0.8) 5 (0.2) 6 (0.2) 1 (0.0) 17 (0.7) 11 (0.4) 5 (0.2) 8 (0.3) 19 (0.7) 15 (0.6)
Average precipitation days (≥ 1 mm) 3 3 4 1 1 0 4 3 1 1 1 2

Monthly sunshine hours in Boulder City, Nevada, United States §

The sunniest months in Boulder City are May, June and July, when the sun shines an average of 12 hours 16 minutes a day.Least sunny months in Boulder City: January, February and December receive an average of 7 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Boulder City, Nevada, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 187 240 293 326 370 380 378 362 322 294 258 232
Mean daily daylight hours 10h 1m 10h 53m 11h 59m 13h 7m 14h 4m 14h 32m 14h 17m 13h 26m 12h 21m 11h 13m 10h 14m 9h 44m

Solar UV radiation in Boulder City, Nevada, United States §

Boulder City experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 5. For more detailed information, check out our hourly Boulder City UV Index data.

Average daily maximum UV levels by month for Boulder City, Nevada, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 4 6 8 10 11 12 12 11 10 7 5 3