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Monthly climate in Winston, Oregon, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Winston features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 4 °C (40 °F) and 19 °C (67 °F) through the year, but rarely can drop to -8 °C (17 °F) or can rise to as high as 41 °C (106 °F).The average annual precipitation amounts to about 1048 mm (41.2 inches) and receives 117 rainy days on the 1 mm (0.04 inches) threshold annually.Winston enjoys an average of 2851 hours of sunshine throughout the year, and daylight varies from 9 hours 1 minutes to 15 hours 18 minutes per day.

Monthly average temperatures in Winston, Oregon, United States §

The warmest months in Winston are July, August and September, with daily mean temperatures ranging from 16 to 19 °C (62 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 5 °C (40 - 41 °F) throughout the day. On average each year, Winston experiences 62 days above 25 °C (77.0 °F) and 47 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Winston, Oregon, 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 17°C
(62°F)		 20°C
(67°F)		 22°C
(71°F)		 26°C
(80°F)		 30°C
(87°F)		 41°C
(106°F)		 35°C
(96°F)		 40°C
(104°F)		 37°C
(99°F)		 29°C
(85°F)		 22°C
(71°F)		 18°C
(65°F)
Mean maximum 14°C
(58°F)		 17°C
(62°F)		 20°C
(67°F)		 25°C
(77°F)		 27°C
(81°F)		 32°C
(91°F)		 33°C
(91°F)		 36°C
(98°F)		 32°C
(91°F)		 24°C
(76°F)		 19°C
(67°F)		 14°C
(58°F)
Average high 9°C
(49°F)		 9°C
(49°F)		 12°C
(54°F)		 15°C
(60°F)		 19°C
(66°F)		 23°C
(73°F)		 27°C
(81°F)		 27°C
(82°F)		 24°C
(75°F)		 18°C
(64°F)		 13°C
(55°F)		 8°C
(47°F)
Daily mean 5°C
(41°F)		 5°C
(41°F)		 7°C
(44°F)		 9°C
(49°F)		 13°C
(55°F)		 16°C
(61°F)		 19°C
(67°F)		 19°C
(67°F)		 16°C
(62°F)		 11°C
(53°F)		 7°C
(46°F)		 4°C
(40°F)
Average low 2°C
(35°F)		 1°C
(34°F)		 2°C
(36°F)		 4°C
(40°F)		 7°C
(45°F)		 10°C
(50°F)		 12°C
(53°F)		 12°C
(54°F)		 10°C
(51°F)		 6°C
(43°F)		 3°C
(38°F)		 1°C
(34°F)
Mean minimum -4°C
(26°F)		 -5°C
(24°F)		 -3°C
(27°F)		 -1°C
(30°F)		 2°C
(36°F)		 5°C
(41°F)		 8°C
(47°F)		 8°C
(46°F)		 4°C
(40°F)		 -0°C
(32°F)		 -3°C
(27°F)		 -4°C
(25°F)
Minimum -8°C
(17°F)		 -8°C
(18°F)		 -7°C
(20°F)		 -5°C
(24°F)		 1°C
(34°F)		 4°C
(39°F)		 7°C
(44°F)		 6°C
(43°F)		 2°C
(36°F)		 -2°C
(28°F)		 -5°C
(24°F)		 -6°C
(22°F)

Compare climate in Winston with other places

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

Monthly average precipitation in Winston, Oregon, United States §

Winston usually has the most precipitation in January, February and December, with an average of 15 rainy days and 162 mm (6.4 inches) of precipitation per month.The driest months in Winston are June, July and August. On average, 12 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Winston, Oregon, 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) 150 (5.9) 186 (7.3) 126 (5.0) 111 (4.4) 60 (2.4) 28 (1.1) 2 (0.1) 7 (0.3) 53 (2.1) 62 (2.5) 112 (4.4) 150 (5.9)
Average precipitation days (≥ 1 mm) 15 16 17 13 8 5 0 1 6 9 12 15

Monthly sunshine hours in Winston, Oregon, United States §

The sunniest months in Winston are June, July and August, when the sun shines an average of 11 hours 39 minutes a day.Least sunny months in Winston: January, February and December receive an average of 3 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Winston, Oregon, 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 98 135 206 238 302 337 383 351 283 229 159 124
Mean daily daylight hours 9h 23m 10h 32m 11h 58m 13h 26m 14h 41m 15h 18m 14h 57m 13h 50m 12h 26m 10h 58m 9h 41m 9h 1m

Solar UV radiation in Winston, Oregon, United States §

Winston experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 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 Winston UV Index data.

Average daily maximum UV levels by month for Winston, Oregon, 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) 3 4 6 8 10 10 10 9 8 6 3 2