Monthly climate in Yreka, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Yreka features a warm-summer Mediterranean climate (Csb). Temperatures typically range between 2 °C (35 °F) and 22 °C (72 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 688 mm (27.1 inches) and receives 88 rainy days on the 1 mm (0.04 inches) threshold annually. Yreka enjoys an average of 3227 hours of sunshine throughout the year, and daylight varies from 9 hours 11 minutes to 15 hours 8 minutes per day.

Monthly average temperatures in Yreka, California, United States §

The warmest months in Yreka 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 2 to 3 °C (35 - 37 °F) throughout the day. On average each year, Yreka experiences 88 days above 25 °C (77.0 °F) and 106 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Yreka, 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 15°C
(59°F)
18°C
(64°F)
22°C
(72°F)
28°C
(83°F)
33°C
(91°F)
37°C
(99°F)
37°C
(99°F)
38°C
(101°F)
36°C
(98°F)
30°C
(87°F)
24°C
(76°F)
15°C
(59°F)
Mean maximum 13°C
(55°F)
15°C
(60°F)
20°C
(68°F)
25°C
(78°F)
29°C
(85°F)
33°C
(92°F)
36°C
(96°F)
36°C
(97°F)
33°C
(92°F)
26°C
(79°F)
19°C
(67°F)
12°C
(53°F)
Average high 7°C
(45°F)
9°C
(48°F)
11°C
(53°F)
16°C
(61°F)
20°C
(69°F)
26°C
(79°F)
31°C
(89°F)
31°C
(87°F)
26°C
(78°F)
19°C
(66°F)
11°C
(52°F)
6°C
(44°F)
Daily mean 2°C
(36°F)
3°C
(37°F)
5°C
(42°F)
9°C
(48°F)
13°C
(55°F)
18°C
(64°F)
22°C
(72°F)
21°C
(71°F)
17°C
(62°F)
10°C
(51°F)
5°C
(41°F)
2°C
(35°F)
Average low -2°C
(29°F)
-2°C
(29°F)
-0°C
(32°F)
2°C
(36°F)
5°C
(42°F)
9°C
(49°F)
12°C
(54°F)
12°C
(54°F)
8°C
(47°F)
3°C
(38°F)
-0°C
(31°F)
-2°C
(29°F)
Mean minimum -8°C
(18°F)
-9°C
(16°F)
-5°C
(23°F)
-3°C
(26°F)
-1°C
(30°F)
2°C
(36°F)
8°C
(46°F)
7°C
(46°F)
2°C
(36°F)
-3°C
(28°F)
-8°C
(19°F)
-7°C
(20°F)
Minimum -18°C
(-0°F)
-15°C
(4°F)
-8°C
(18°F)
-7°C
(20°F)
-2°C
(29°F)
0°C
(33°F)
5°C
(42°F)
6°C
(43°F)
-1°C
(31°F)
-5°C
(24°F)
-14°C
(8°F)
-9°C
(17°F)

Compare climate in Yreka with other places

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

Monthly average precipitation in Yreka, California, United States §

Yreka usually has the most precipitation in January, February and December, with an average of 11 rainy days and 110 mm (4.3 inches) of precipitation per month. The driest months in Yreka are June, July and August. On average, 8 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Yreka, 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) 121 (4.8) 118 (4.7) 91 (3.6) 61 (2.4) 49 (1.9) 16 (0.6) 5 (0.2) 5 (0.2) 20 (0.8) 38 (1.5) 72 (2.8) 92 (3.6)
Average precipitation days (≥ 1 mm) 12 12 14 9 6 3 1 1 4 6 9 11

Monthly sunshine hours in Yreka, California, United States §

The sunniest months in Yreka are June, July and August, when the sun shines an average of 12 hours 30 minutes a day. Least sunny months in Yreka: January, February and December receive an average of 4 hours 54 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Yreka, 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 110 178 229 276 350 383 403 364 308 272 191 158
Mean daily daylight hours 9h 31m 10h 36m 11h 58m 13h 22m 14h 33m 15h 8m 14h 49m 13h 45m 12h 24m 11h 1m 9h 48m 9h 11m

Solar UV radiation in Yreka, California, United States §

Yreka 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 Yreka UV Index data.

Average daily maximum UV levels by month for Yreka, 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

Detailed Monthly Weather Insights for Yreka, California, United States

Discover in-depth weather details for every month in Yreka. 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 Yreka'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.