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Monthly climate in Junction City, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Junction City features a warm-summer Mediterranean climate (Csb).Temperatures typically range between 3 °C (37 °F) and 23 °C (74 °F) through the year, but rarely can drop to -15 °C (6 °F) or can rise to as high as 38 °C (101 °F).The average annual precipitation amounts to about 893 mm (35.2 inches) and receives 85 rainy days on the 1 mm (0.04 inches) threshold annually.Junction City enjoys an average of 3226 hours of sunshine throughout the year, and daylight varies from 9 hours 17 minutes to 15 hours 1 minutes per day.

Monthly average temperatures in Junction City, California, United States §

The warmest months in Junction City are June, July and August, with daily mean temperatures ranging from 18 to 23 °C (65 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 4 °C (37 - 39 °F) throughout the day. On average each year, Junction City experiences 95 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 Junction City, California, 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 16°C
(61°F)		 20°C
(69°F)		 22°C
(72°F)		 26°C
(80°F)		 31°C
(89°F)		 36°C
(98°F)		 38°C
(100°F)		 38°C
(101°F)		 37°C
(99°F)		 32°C
(90°F)		 24°C
(76°F)		 18°C
(65°F)
Mean maximum 15°C
(59°F)		 17°C
(64°F)		 20°C
(69°F)		 25°C
(77°F)		 29°C
(85°F)		 33°C
(92°F)		 36°C
(97°F)		 36°C
(97°F)		 34°C
(93°F)		 28°C
(82°F)		 22°C
(71°F)		 14°C
(58°F)
Average high 8°C
(46°F)		 9°C
(49°F)		 11°C
(52°F)		 16°C
(61°F)		 20°C
(69°F)		 26°C
(79°F)		 32°C
(89°F)		 31°C
(88°F)		 26°C
(80°F)		 20°C
(68°F)		 13°C
(56°F)		 7°C
(45°F)
Daily mean 3°C
(38°F)		 4°C
(39°F)		 5°C
(42°F)		 9°C
(49°F)		 13°C
(56°F)		 18°C
(65°F)		 23°C
(74°F)		 23°C
(73°F)		 18°C
(65°F)		 12°C
(54°F)		 7°C
(45°F)		 3°C
(37°F)
Average low -0°C
(32°F)		 -1°C
(31°F)		 0°C
(33°F)		 3°C
(37°F)		 6°C
(44°F)		 11°C
(51°F)		 15°C
(59°F)		 15°C
(59°F)		 11°C
(52°F)		 6°C
(43°F)		 2°C
(36°F)		 -1°C
(31°F)
Mean minimum -7°C
(20°F)		 -7°C
(20°F)		 -6°C
(22°F)		 -3°C
(27°F)		 -1°C
(31°F)		 2°C
(36°F)		 10°C
(50°F)		 10°C
(51°F)		 3°C
(38°F)		 -0°C
(32°F)		 -4°C
(24°F)		 -6°C
(22°F)
Minimum -15°C
(6°F)		 -13°C
(10°F)		 -9°C
(15°F)		 -5°C
(24°F)		 -3°C
(27°F)		 0°C
(33°F)		 8°C
(46°F)		 8°C
(47°F)		 -0°C
(32°F)		 -2°C
(28°F)		 -14°C
(6°F)		 -11°C
(13°F)

Compare climate in Junction City with other places

Compare temperature, precipitation, sunshine, UV index in Junction City, California, United States with other places around the world.

Monthly average precipitation in Junction City, California, United States §

Junction City usually has the most precipitation in January, February and March, with an average of 12 rainy days and 151 mm (5.9 inches) of precipitation per month.The driest months in Junction City are July, August and September. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Junction City, California, 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) 167 (6.6) 157 (6.2) 128 (5.1) 80 (3.2) 57 (2.2) 15 (0.6) 2 (0.1) 4 (0.2) 14 (0.5) 49 (1.9) 99 (3.9) 121 (4.8)
Average precipitation days (≥ 1 mm) 13 10 15 10 6 3 0 1 3 5 8 11

Monthly sunshine hours in Junction City, California, United States §

The sunniest months in Junction City are June, July and August, when the sun shines an average of 12 hours 24 minutes a day.Least sunny months in Junction City: January, February and December receive an average of 5 hours 1 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Junction City, California, 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 113 181 233 273 343 378 401 361 307 272 197 162
Mean daily daylight hours 9h 37m 10h 39m 11h 58m 13h 19m 14h 28m 15h 1m 14h 43m 13h 42m 12h 24m 11h 3m 9h 53m 9h 17m

Solar UV radiation in Junction City, California, United States §

Junction City experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Junction City UV Index data.

Average daily maximum UV levels by month for Junction City, California, 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 5 7 9 11 11 11 10 9 6 4 3