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Monthly climate in Cascade Locks, Oregon, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Cascade Locks features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 2 °C (35 °F) and 19 °C (67 °F) through the year, but rarely can drop to -17 °C (1 °F) or can rise to as high as 42 °C (108 °F). The average annual precipitation amounts to about 1990 mm (78.3 inches) and receives 164 rainy days on the 1 mm (0.04 inches) threshold annually. Cascade Locks enjoys an average of 2901 hours of sunshine throughout the year, and daylight varies from 8 hours 43 minutes to 15 hours 37 minutes per day.

Monthly average temperatures in Cascade Locks, Oregon, United States §

The warmest months in Cascade Locks are July, August and September, with daily mean temperatures ranging from 15 to 19 °C (60 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 2 °C (35 - 36 °F) throughout the day. On average each year, Cascade Locks experiences 43 days above 25 °C (77.0 °F) and 67 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cascade Locks, 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 12°C
(54°F)		 14°C
(58°F)		 20°C
(68°F)		 26°C
(79°F)		 30°C
(86°F)		 42°C
(108°F)		 37°C
(98°F)		 38°C
(101°F)		 35°C
(96°F)		 26°C
(78°F)		 17°C
(62°F)		 14°C
(58°F)
Mean maximum 9°C
(49°F)		 11°C
(52°F)		 15°C
(60°F)		 22°C
(72°F)		 27°C
(81°F)		 32°C
(90°F)		 33°C
(92°F)		 36°C
(97°F)		 32°C
(89°F)		 21°C
(69°F)		 14°C
(58°F)		 10°C
(51°F)
Average high 4°C
(40°F)		 5°C
(41°F)		 9°C
(48°F)		 13°C
(55°F)		 17°C
(63°F)		 21°C
(69°F)		 25°C
(78°F)		 26°C
(79°F)		 21°C
(70°F)		 14°C
(57°F)		 8°C
(47°F)		 4°C
(40°F)
Daily mean 2°C
(36°F)		 2°C
(35°F)		 4°C
(40°F)		 8°C
(46°F)		 12°C
(54°F)		 15°C
(60°F)		 19°C
(66°F)		 19°C
(67°F)		 15°C
(60°F)		 9°C
(48°F)		 5°C
(41°F)		 2°C
(36°F)
Average low -0°C
(32°F)		 -1°C
(30°F)		 1°C
(34°F)		 3°C
(38°F)		 7°C
(44°F)		 10°C
(49°F)		 12°C
(53°F)		 12°C
(55°F)		 10°C
(50°F)		 5°C
(41°F)		 2°C
(36°F)		 -0°C
(32°F)
Mean minimum -8°C
(18°F)		 -11°C
(13°F)		 -5°C
(23°F)		 -2°C
(29°F)		 1°C
(35°F)		 5°C
(41°F)		 7°C
(46°F)		 7°C
(45°F)		 5°C
(41°F)		 -2°C
(29°F)		 -3°C
(28°F)		 -7°C
(20°F)
Minimum -16°C
(4°F)		 -17°C
(1°F)		 -9°C
(16°F)		 -4°C
(26°F)		 0°C
(33°F)		 4°C
(40°F)		 6°C
(42°F)		 6°C
(43°F)		 3°C
(37°F)		 -5°C
(24°F)		 -4°C
(25°F)		 -12°C
(11°F)

Compare climate in Cascade Locks with other places

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

Monthly average precipitation in Cascade Locks, Oregon, United States §

Cascade Locks usually has the most precipitation in January, February and December, with an average of 20 rainy days and 292 mm (11.5 inches) of precipitation per month. The driest months in Cascade Locks are June, July and August. On average, 31 mm (1.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cascade Locks, 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) 275 (10.8) 301 (11.8) 194 (7.6) 170 (6.7) 86 (3.4) 72 (2.8) 9 (0.4) 13 (0.5) 103 (4.0) 201 (7.9) 265 (10.4) 302 (11.9)
Average precipitation days (≥ 1 mm) 18 21 18 16 12 9 3 4 9 14 19 21

Monthly sunshine hours in Cascade Locks, Oregon, United States §

The sunniest months in Cascade Locks are June, July and August, when the sun shines an average of 12 hours 7 minutes a day. Least sunny months in Cascade Locks: January, February and December receive an average of 3 hours 49 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cascade Locks, 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 95 131 210 255 322 356 400 357 278 223 148 121
Mean daily daylight hours 9h 8m 10h 23m 11h 57m 13h 34m 14h 56m 15h 37m 15h 14m 14h 1m 12h 28m 10h 52m 9h 27m 8h 43m

Solar UV radiation in Cascade Locks, Oregon, United States §

Cascade Locks 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 Cascade Locks UV Index data.

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

Detailed Monthly Weather Insights for Cascade Locks, Oregon, United States

Discover in-depth weather details for every month in Cascade Locks. Click through the links below for comprehensive overviews of temperature trends, precipitation levels, sunshine hours, and solar UV radiation specifics. Whether planning a visit or simply curious about Cascade Locks's climate nuances, these monthly breakdowns provide the information you need for an informed understanding of what to expect throughout the year.

Each link leads to a detailed account of the typical weather conditions for that month, providing both locals and tourists with vital information to plan their daily activities, wardrobe, and travel itineraries accordingly.