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Monthly climate in Granger, Washington, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Granger features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 1 °C (34 °F) and 26 °C (79 °F) through the year, but rarely can drop to -24 °C (-10 °F) or can rise to as high as 46 °C (115 °F).The average annual precipitation amounts to about 297 mm (11.7 inches) and receives 65 rainy days on the 1 mm (0.04 inches) threshold annually.Granger enjoys an average of 3137 hours of sunshine throughout the year, and daylight varies from 8 hours 38 minutes to 15 hours 43 minutes per day.

Monthly average temperatures in Granger, Washington, United States §

The warmest months in Granger are June, July and August, with daily mean temperatures ranging from 22 to 26 °C (72 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (34 - 36 °F) throughout the day. On average each year, Granger experiences 100 days above 25 °C (77.0 °F) and 76 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Granger, 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 14°C
(58°F)		 19°C
(67°F)		 21°C
(71°F)		 31°C
(88°F)		 35°C
(96°F)		 46°C
(115°F)		 43°C
(109°F)		 41°C
(107°F)		 39°C
(103°F)		 32°C
(90°F)		 21°C
(69°F)		 19°C
(67°F)
Mean maximum 12°C
(53°F)		 15°C
(59°F)		 19°C
(67°F)		 26°C
(79°F)		 33°C
(91°F)		 36°C
(97°F)		 40°C
(105°F)		 40°C
(105°F)		 36°C
(96°F)		 26°C
(79°F)		 18°C
(65°F)		 14°C
(58°F)
Average high 4°C
(40°F)		 6°C
(44°F)		 12°C
(54°F)		 17°C
(64°F)		 24°C
(75°F)		 29°C
(84°F)		 34°C
(93°F)		 33°C
(92°F)		 26°C
(80°F)		 17°C
(63°F)		 10°C
(50°F)		 5°C
(41°F)
Daily mean 1°C
(34°F)		 2°C
(36°F)		 7°C
(44°F)		 11°C
(53°F)		 17°C
(63°F)		 22°C
(72°F)		 26°C
(79°F)		 25°C
(78°F)		 19°C
(67°F)		 11°C
(52°F)		 5°C
(42°F)		 1°C
(35°F)
Average low -2°C
(29°F)		 -2°C
(29°F)		 2°C
(35°F)		 5°C
(42°F)		 10°C
(51°F)		 14°C
(58°F)		 17°C
(63°F)		 17°C
(62°F)		 12°C
(54°F)		 5°C
(42°F)		 2°C
(35°F)		 -1°C
(30°F)
Mean minimum -10°C
(15°F)		 -11°C
(13°F)		 -5°C
(23°F)		 -2°C
(29°F)		 4°C
(39°F)		 8°C
(48°F)		 12°C
(53°F)		 10°C
(51°F)		 5°C
(42°F)		 -3°C
(26°F)		 -5°C
(23°F)		 -8°C
(18°F)
Minimum -24°C
(-10°F)		 -16°C
(3°F)		 -15°C
(6°F)		 -8°C
(19°F)		 3°C
(37°F)		 7°C
(46°F)		 11°C
(52°F)		 8°C
(46°F)		 3°C
(39°F)		 -9°C
(16°F)		 -7°C
(20°F)		 -10°C
(15°F)

Compare climate in Granger with other places

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

Monthly average precipitation in Granger, Washington, United States §

Granger usually has the most precipitation in January, February and December, with an average of 10 rainy days and 48 mm (1.9 inches) of precipitation per month.The driest months in Granger are June, July and August. On average, 4 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Granger, 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) 51 (2.0) 51 (2.0) 27 (1.1) 24 (1.0) 18 (0.7) 6 (0.2) 1 (0.0) 5 (0.2) 10 (0.4) 27 (1.1) 34 (1.3) 42 (1.6)
Average precipitation days (≥ 1 mm) 11 10 8 5 4 2 0 1 2 5 8 9

Monthly sunshine hours in Granger, Washington, United States §

The sunniest months in Granger are June, July and August, when the sun shines an average of 12 hours 35 minutes a day.Least sunny months in Granger: January, February and December receive an average of 4 hours 19 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Granger, 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 100 161 240 288 355 379 413 364 292 243 166 131
Mean daily daylight hours 9h 3m 10h 20m 11h 57m 13h 36m 15h 0m 15h 43m 15h 19m 14h 3m 12h 28m 10h 50m 9h 23m 8h 38m

Solar UV radiation in Granger, Washington, United States §

Granger 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, 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 Granger UV Index data.

Average daily maximum UV levels by month for Granger, 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 7 9 10 10 9 7 5 3 2