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Monthly climate in Susanville, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Susanville features a warm-summer Mediterranean climate (Csb).Temperatures typically range between -1 °C (30 °F) and 22 °C (72 °F) through the year, but rarely can drop to -19 °C (-3 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 625 mm (24.6 inches) and receives 81 rainy days on the 1 mm (0.04 inches) threshold annually.Susanville enjoys an average of 3415 hours of sunshine throughout the year, and daylight varies from 9 hours 19 minutes to 14 hours 59 minutes per day.

Monthly average temperatures in Susanville, California, United States §

The warmest months in Susanville are June, July and August, with daily mean temperatures ranging from 18 to 22 °C (64 - 72 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -1 to 0 °C (30 - 32 °F) throughout the day. On average each year, Susanville experiences 81 days above 25 °C (77.0 °F) and 136 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Susanville, 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 11°C
(51°F)		 16°C
(61°F)		 19°C
(67°F)		 25°C
(78°F)		 30°C
(86°F)		 35°C
(96°F)		 37°C
(99°F)		 35°C
(96°F)		 35°C
(95°F)		 29°C
(84°F)		 21°C
(71°F)		 12°C
(55°F)
Mean maximum 9°C
(48°F)		 11°C
(53°F)		 16°C
(61°F)		 22°C
(72°F)		 27°C
(81°F)		 30°C
(87°F)		 35°C
(95°F)		 34°C
(94°F)		 33°C
(91°F)		 25°C
(77°F)		 19°C
(66°F)		 9°C
(49°F)
Average high 4°C
(39°F)		 5°C
(42°F)		 7°C
(46°F)		 13°C
(56°F)		 18°C
(65°F)		 25°C
(77°F)		 31°C
(88°F)		 30°C
(86°F)		 25°C
(76°F)		 17°C
(63°F)		 10°C
(50°F)		 3°C
(38°F)
Daily mean -1°C
(31°F)		 -0°C
(32°F)		 2°C
(35°F)		 6°C
(44°F)		 12°C
(53°F)		 18°C
(64°F)		 22°C
(72°F)		 21°C
(71°F)		 16°C
(62°F)		 9°C
(49°F)		 4°C
(39°F)		 -1°C
(30°F)
Average low -5°C
(24°F)		 -5°C
(23°F)		 -3°C
(26°F)		 0°C
(33°F)		 5°C
(41°F)		 10°C
(50°F)		 14°C
(57°F)		 13°C
(56°F)		 9°C
(49°F)		 3°C
(38°F)		 -1°C
(31°F)		 -5°C
(22°F)
Mean minimum -14°C
(7°F)		 -15°C
(6°F)		 -12°C
(10°F)		 -7°C
(20°F)		 -1°C
(30°F)		 2°C
(35°F)		 10°C
(50°F)		 9°C
(48°F)		 2°C
(36°F)		 -4°C
(26°F)		 -8°C
(18°F)		 -12°C
(10°F)
Minimum -19°C
(-3°F)		 -18°C
(0°F)		 -19°C
(-2°F)		 -10°C
(15°F)		 -6°C
(22°F)		 -1°C
(31°F)		 8°C
(47°F)		 7°C
(44°F)		 -2°C
(28°F)		 -6°C
(21°F)		 -12°C
(11°F)		 -14°C
(7°F)

Compare climate in Susanville with other places

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

Monthly average precipitation in Susanville, California, United States §

Susanville usually has the most precipitation in January, February and March, with an average of 11 rainy days and 103 mm (4.0 inches) of precipitation per month.The driest months in Susanville are June, July and August. On average, 11 mm (0.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Susanville, 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) 104 (4.1) 112 (4.4) 92 (3.6) 48 (1.9) 53 (2.1) 14 (0.5) 10 (0.4) 10 (0.4) 20 (0.8) 35 (1.4) 49 (1.9) 79 (3.1)
Average precipitation days (≥ 1 mm) 11 10 13 8 8 3 3 3 3 3 6 10

Monthly sunshine hours in Susanville, California, United States §

The sunniest months in Susanville are June, July and August, when the sun shines an average of 12 hours 31 minutes a day.Least sunny months in Susanville: January, February and December receive an average of 5 hours 52 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Susanville, 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 141 206 253 301 356 389 399 363 320 281 215 186
Mean daily daylight hours 9h 39m 10h 40m 11h 58m 13h 18m 14h 26m 14h 59m 14h 41m 13h 41m 12h 24m 11h 4m 9h 54m 9h 19m

Solar UV radiation in Susanville, California, United States §

Susanville experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 11 - 12, 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 Susanville UV Index data.

Average daily maximum UV levels by month for Susanville, 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) 4 5 8 10 11 12 11 11 9 7 4 3