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Monthly climate in Tieton, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Tieton features a warm-summer Mediterranean climate (Csb).Temperatures typically range between -1 °C (30 °F) and 21 °C (70 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 41 °C (105 °F).The average annual precipitation amounts to about 536 mm (21.1 inches) and receives 94 rainy days on the 1 mm (0.04 inches) threshold annually.Tieton enjoys an average of 3038 hours of sunshine throughout the year, and daylight varies from 8 hours 35 minutes to 15 hours 46 minutes per day.

Monthly average temperatures in Tieton, Washington, United States §

The warmest months in Tieton are June, July and August, with daily mean temperatures ranging from 17 to 21 °C (63 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 0 °C (30 - 31 °F) throughout the day. On average each year, Tieton experiences 63 days above 25 °C (77.0 °F) and 121 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Tieton, 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 10°C
(51°F)		 15°C
(60°F)		 18°C
(64°F)		 27°C
(81°F)		 30°C
(87°F)		 41°C
(105°F)		 37°C
(99°F)		 37°C
(100°F)		 34°C
(94°F)		 28°C
(83°F)		 17°C
(64°F)		 16°C
(62°F)
Mean maximum 8°C
(46°F)		 11°C
(52°F)		 15°C
(60°F)		 21°C
(71°F)		 28°C
(83°F)		 31°C
(89°F)		 35°C
(96°F)		 36°C
(96°F)		 31°C
(89°F)		 22°C
(72°F)		 16°C
(61°F)		 10°C
(51°F)
Average high 2°C
(36°F)		 4°C
(39°F)		 9°C
(48°F)		 14°C
(57°F)		 20°C
(68°F)		 24°C
(75°F)		 29°C
(84°F)		 29°C
(84°F)		 22°C
(73°F)		 14°C
(57°F)		 7°C
(45°F)		 2°C
(37°F)
Daily mean -1°C
(30°F)		 -1°C
(31°F)		 3°C
(38°F)		 8°C
(46°F)		 13°C
(56°F)		 17°C
(63°F)		 21°C
(70°F)		 21°C
(70°F)		 16°C
(60°F)		 8°C
(47°F)		 3°C
(37°F)		 -0°C
(31°F)
Average low -4°C
(25°F)		 -4°C
(25°F)		 -1°C
(30°F)		 2°C
(36°F)		 7°C
(45°F)		 10°C
(51°F)		 13°C
(56°F)		 13°C
(56°F)		 9°C
(49°F)		 3°C
(37°F)		 -1°C
(31°F)		 -3°C
(27°F)
Mean minimum -13°C
(9°F)		 -13°C
(10°F)		 -8°C
(18°F)		 -4°C
(24°F)		 1°C
(34°F)		 5°C
(41°F)		 8°C
(47°F)		 7°C
(45°F)		 3°C
(39°F)		 -4°C
(25°F)		 -7°C
(20°F)		 -9°C
(16°F)
Minimum -23°C
(-9°F)		 -19°C
(-1°F)		 -16°C
(4°F)		 -11°C
(13°F)		 -0°C
(31°F)		 3°C
(38°F)		 7°C
(45°F)		 6°C
(42°F)		 1°C
(35°F)		 -8°C
(18°F)		 -9°C
(16°F)		 -11°C
(12°F)

Compare climate in Tieton with other places

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

Monthly average precipitation in Tieton, Washington, United States §

Tieton usually has the most precipitation in January, February and December, with an average of 13 rainy days and 88 mm (3.5 inches) of precipitation per month.The driest months in Tieton are June, July and August. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Tieton, 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) 89 (3.5) 90 (3.5) 48 (1.9) 37 (1.4) 20 (0.8) 14 (0.6) 1 (0.0) 4 (0.2) 24 (1.0) 56 (2.2) 67 (2.6) 84 (3.3)
Average precipitation days (≥ 1 mm) 15 14 10 8 6 4 0 1 4 8 12 12

Monthly sunshine hours in Tieton, Washington, United States §

The sunniest months in Tieton are June, July and August, when the sun shines an average of 12 hours 29 minutes a day.Least sunny months in Tieton: January, November and December receive an average of 3 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Tieton, 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 92 149 232 278 348 372 412 364 288 232 148 116
Mean daily daylight hours 9h 1m 10h 19m 11h 57m 13h 37m 15h 3m 15h 46m 15h 22m 14h 5m 12h 28m 10h 49m 9h 21m 8h 35m

Solar UV radiation in Tieton, Washington, United States §

Tieton experiences the highest level of ultraviolet (UV) radiation in June, 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, November 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 Tieton UV Index data.

Average daily maximum UV levels by month for Tieton, 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 4 6 7 9 10 10 9 8 5 3 2