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Monthly climate in Benton City, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Benton City features a cold semi-arid climate (BSk).Temperatures typically range between 1 °C (35 °F) and 28 °C (82 °F) through the year, but rarely can drop to -22 °C (-7 °F) or can rise to as high as 48 °C (118 °F).The average annual precipitation amounts to about 236 mm (9.3 inches) and receives 56 rainy days on the 1 mm (0.04 inches) threshold annually.Benton City enjoys an average of 3194 hours of sunshine throughout the year, and daylight varies from 8 hours 39 minutes to 15 hours 42 minutes per day.

Monthly average temperatures in Benton City, Washington, United States §

The warmest months in Benton City are June, July and August, with daily mean temperatures ranging from 24 to 28 °C (75 - 82 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (35 - 36 °F) throughout the day. On average each year, Benton City experiences 109 days above 25 °C (77.0 °F) and 71 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Benton City, Washington, 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 16°C
(60°F)		 19°C
(67°F)		 23°C
(73°F)		 33°C
(91°F)		 37°C
(98°F)		 48°C
(118°F)		 44°C
(112°F)		 43°C
(110°F)		 39°C
(103°F)		 32°C
(90°F)		 23°C
(73°F)		 20°C
(68°F)
Mean maximum 12°C
(54°F)		 15°C
(60°F)		 21°C
(71°F)		 28°C
(82°F)		 34°C
(94°F)		 38°C
(100°F)		 42°C
(108°F)		 42°C
(108°F)		 37°C
(99°F)		 27°C
(81°F)		 20°C
(69°F)		 16°C
(61°F)
Average high 5°C
(41°F)		 7°C
(45°F)		 14°C
(57°F)		 19°C
(67°F)		 26°C
(78°F)		 30°C
(87°F)		 35°C
(96°F)		 35°C
(94°F)		 28°C
(82°F)		 18°C
(65°F)		 10°C
(51°F)		 5°C
(41°F)
Daily mean 1°C
(35°F)		 2°C
(36°F)		 8°C
(47°F)		 13°C
(56°F)		 19°C
(67°F)		 24°C
(75°F)		 28°C
(82°F)		 27°C
(81°F)		 21°C
(69°F)		 12°C
(54°F)		 5°C
(42°F)		 2°C
(35°F)
Average low -2°C
(29°F)		 -2°C
(29°F)		 3°C
(37°F)		 7°C
(44°F)		 12°C
(54°F)		 16°C
(61°F)		 18°C
(65°F)		 18°C
(65°F)		 13°C
(55°F)		 6°C
(43°F)		 1°C
(35°F)		 -1°C
(30°F)
Mean minimum -9°C
(16°F)		 -10°C
(15°F)		 -5°C
(24°F)		 1°C
(34°F)		 5°C
(42°F)		 10°C
(49°F)		 13°C
(56°F)		 11°C
(52°F)		 6°C
(44°F)		 -2°C
(28°F)		 -5°C
(23°F)		 -8°C
(19°F)
Minimum -22°C
(-7°F)		 -14°C
(8°F)		 -17°C
(2°F)		 -1°C
(31°F)		 4°C
(39°F)		 9°C
(48°F)		 12°C
(54°F)		 10°C
(50°F)		 5°C
(41°F)		 -9°C
(15°F)		 -9°C
(17°F)		 -9°C
(16°F)

Compare climate in Benton City with other places

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

Monthly average precipitation in Benton City, Washington, United States §

Benton City usually has the most precipitation in January, February and November, with an average of 8 rainy days and 35 mm (1.4 inches) of precipitation per month.The driest months in Benton City are June, July and August. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Benton City, Washington, 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) 37 (1.5) 38 (1.5) 24 (1.0) 21 (0.8) 14 (0.5) 6 (0.2) 0 (0.0) 3 (0.1) 8 (0.3) 23 (0.9) 30 (1.2) 30 (1.2)
Average precipitation days (≥ 1 mm) 9 10 6 5 3 2 0 1 2 5 7 6

Monthly sunshine hours in Benton City, Washington, United States §

The sunniest months in Benton City are June, July and August, when the sun shines an average of 12 hours 34 minutes a day.Least sunny months in Benton City: January, February and December receive an average of 4 hours 35 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Benton City, Washington, 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 106 168 246 297 356 379 415 361 293 248 176 142
Mean daily daylight hours 9h 4m 10h 21m 11h 57m 13h 36m 15h 0m 15h 42m 15h 19m 14h 3m 12h 28m 10h 50m 9h 24m 8h 39m

Solar UV radiation in Benton City, Washington, United States §

Benton City experiences the highest level of ultraviolet (UV) radiation in May, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Benton City UV Index data.

Average daily maximum UV levels by month for Benton City, Washington, 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) 2 3 5 6 9 9 10 9 7 5 3 2