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Monthly climate in Riddle, Oregon, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Riddle features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 4 °C (39 °F) and 20 °C (68 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 1027 mm (40.4 inches) and receives 116 rainy days on the 1 mm (0.04 inches) threshold annually.Riddle enjoys an average of 2942 hours of sunshine throughout the year, and daylight varies from 9 hours 2 minutes to 15 hours 17 minutes per day.

Monthly average temperatures in Riddle, Oregon, United States §

The warmest months in Riddle are June, July and August, with daily mean temperatures ranging from 17 to 20 °C (62 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 5 °C (39 - 40 °F) throughout the day. On average each year, Riddle experiences 69 days above 25 °C (77.0 °F) and 55 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Riddle, 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
(63°F)		 19°C
(67°F)		 22°C
(72°F)		 26°C
(80°F)		 30°C
(87°F)		 42°C
(108°F)		 36°C
(97°F)		 40°C
(104°F)		 37°C
(100°F)		 29°C
(85°F)		 22°C
(71°F)		 18°C
(65°F)
Mean maximum 14°C
(58°F)		 16°C
(62°F)		 20°C
(68°F)		 25°C
(77°F)		 28°C
(82°F)		 33°C
(92°F)		 34°C
(93°F)		 37°C
(99°F)		 33°C
(92°F)		 25°C
(77°F)		 19°C
(67°F)		 14°C
(57°F)
Average high 9°C
(49°F)		 9°C
(49°F)		 12°C
(54°F)		 16°C
(60°F)		 19°C
(67°F)		 24°C
(75°F)		 28°C
(83°F)		 28°C
(83°F)		 24°C
(76°F)		 18°C
(64°F)		 12°C
(54°F)		 8°C
(47°F)
Daily mean 5°C
(40°F)		 4°C
(40°F)		 7°C
(44°F)		 10°C
(49°F)		 13°C
(55°F)		 17°C
(62°F)		 20°C
(68°F)		 20°C
(68°F)		 17°C
(62°F)		 11°C
(52°F)		 7°C
(45°F)		 4°C
(39°F)
Average low 1°C
(34°F)		 1°C
(33°F)		 2°C
(36°F)		 4°C
(40°F)		 7°C
(45°F)		 10°C
(50°F)		 12°C
(54°F)		 12°C
(54°F)		 10°C
(50°F)		 5°C
(42°F)		 3°C
(37°F)		 1°C
(33°F)
Mean minimum -4°C
(25°F)		 -5°C
(23°F)		 -3°C
(27°F)		 -1°C
(30°F)		 2°C
(35°F)		 5°C
(41°F)		 8°C
(47°F)		 7°C
(46°F)		 4°C
(40°F)		 -1°C
(31°F)		 -3°C
(26°F)		 -5°C
(24°F)
Minimum -9°C
(16°F)		 -9°C
(16°F)		 -7°C
(20°F)		 -4°C
(25°F)		 1°C
(35°F)		 4°C
(39°F)		 7°C
(44°F)		 6°C
(43°F)		 2°C
(35°F)		 -3°C
(27°F)		 -5°C
(23°F)		 -6°C
(21°F)

Compare climate in Riddle with other places

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

Monthly average precipitation in Riddle, Oregon, United States §

Riddle usually has the most precipitation in January, February and December, with an average of 15 rainy days and 152 mm (6.0 inches) of precipitation per month.The driest months in Riddle are June, July and August. On average, 13 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Riddle, 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) 140 (5.5) 175 (6.9) 124 (4.9) 112 (4.4) 61 (2.4) 31 (1.2) 2 (0.1) 8 (0.3) 61 (2.4) 67 (2.6) 107 (4.2) 140 (5.5)
Average precipitation days (≥ 1 mm) 15 16 16 13 8 4 0 1 6 9 13 15

Monthly sunshine hours in Riddle, Oregon, United States §

The sunniest months in Riddle are June, July and August, when the sun shines an average of 12 hours 6 minutes a day.Least sunny months in Riddle: January, February and December receive an average of 4 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Riddle, 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 100 138 212 243 313 350 399 363 292 234 162 130
Mean daily daylight hours 9h 24m 10h 32m 11h 58m 13h 26m 14h 40m 15h 17m 14h 56m 13h 50m 12h 25m 10h 58m 9h 41m 9h 2m

Solar UV radiation in Riddle, Oregon, United States §

Riddle 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 Riddle UV Index data.

Average daily maximum UV levels by month for Riddle, 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