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Monthly climate in Thermal, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Thermal features a hot desert climate (BWh).Temperatures typically range between 11 °C (52 °F) and 32 °C (89 °F) through the year, but rarely can drop to -1 °C (30 °F) or can rise to as high as 45 °C (114 °F).The average annual precipitation amounts to about 154 mm (6.1 inches) and receives 19 rainy days on the 1 mm (0.04 inches) threshold annually.Thermal enjoys an average of 3699 hours of sunshine throughout the year, and daylight varies from 9 hours 56 minutes to 14 hours 20 minutes per day.

Monthly average temperatures in Thermal, California, United States §

The warmest months in Thermal are June, July and August, with daily mean temperatures ranging from 29 to 32 °C (84 - 89 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 11 to 13 °C (52 - 55 °F) throughout the day. On average each year, Thermal experiences 189 days above 25 °C (77.0 °F) and 1 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Thermal, 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 26°C
(79°F)		 27°C
(82°F)		 32°C
(90°F)		 36°C
(97°F)		 39°C
(103°F)		 44°C
(112°F)		 44°C
(112°F)		 43°C
(111°F)		 45°C
(114°F)		 39°C
(102°F)		 31°C
(88°F)		 25°C
(78°F)
Mean maximum 23°C
(74°F)		 25°C
(78°F)		 29°C
(84°F)		 34°C
(93°F)		 37°C
(98°F)		 40°C
(104°F)		 43°C
(110°F)		 43°C
(109°F)		 41°C
(107°F)		 34°C
(93°F)		 29°C
(85°F)		 24°C
(75°F)
Average high 18°C
(64°F)		 19°C
(66°F)		 22°C
(71°F)		 27°C
(81°F)		 30°C
(86°F)		 36°C
(97°F)		 38°C
(101°F)		 38°C
(101°F)		 35°C
(94°F)		 28°C
(83°F)		 23°C
(74°F)		 17°C
(63°F)
Daily mean 12°C
(53°F)		 13°C
(55°F)		 15°C
(60°F)		 20°C
(68°F)		 23°C
(73°F)		 29°C
(84°F)		 32°C
(89°F)		 32°C
(89°F)		 28°C
(83°F)		 21°C
(71°F)		 16°C
(61°F)		 11°C
(52°F)
Average low 6°C
(43°F)		 7°C
(44°F)		 9°C
(49°F)		 13°C
(56°F)		 16°C
(61°F)		 21°C
(70°F)		 25°C
(78°F)		 25°C
(77°F)		 21°C
(70°F)		 14°C
(57°F)		 9°C
(49°F)		 5°C
(42°F)
Mean minimum 1°C
(34°F)		 0°C
(33°F)		 3°C
(38°F)		 8°C
(46°F)		 8°C
(48°F)		 15°C
(58°F)		 20°C
(68°F)		 19°C
(67°F)		 14°C
(58°F)		 7°C
(45°F)		 3°C
(38°F)		 0°C
(33°F)
Minimum -1°C
(31°F)		 -1°C
(30°F)		 1°C
(33°F)		 6°C
(43°F)		 7°C
(45°F)		 12°C
(54°F)		 18°C
(64°F)		 18°C
(65°F)		 11°C
(51°F)		 5°C
(41°F)		 2°C
(35°F)		 -1°C
(31°F)

Compare climate in Thermal with other places

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

Monthly average precipitation in Thermal, California, United States §

Thermal usually has the most precipitation in January, February and December, with an average of 3 rainy days and 28 mm (1.1 inches) of precipitation per month.The driest months in Thermal are May, June and September. On average, 3 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Thermal, 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) 28 (1.1) 28 (1.1) 18 (0.7) 11 (0.4) 2 (0.1) 1 (0.0) 10 (0.4) 7 (0.3) 4 (0.2) 6 (0.2) 10 (0.4) 27 (1.1)
Average precipitation days (≥ 1 mm) 4 3 3 1 0 0 1 1 1 1 1 3

Monthly sunshine hours in Thermal, California, United States §

The sunniest months in Thermal are May, June and July, when the sun shines an average of 12 hours 19 minutes a day.Least sunny months in Thermal: January, February and December receive an average of 7 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Thermal, 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 195 251 304 331 374 377 381 362 323 303 261 232
Mean daily daylight hours 10h 11m 10h 58m 11h 59m 13h 2m 13h 55m 14h 20m 14h 6m 13h 19m 12h 19m 11h 17m 10h 23m 9h 56m

Solar UV radiation in Thermal, California, United States §

Thermal experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 12 - 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 5. For more detailed information, check out our hourly Thermal UV Index data.

Average daily maximum UV levels by month for Thermal, 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 6 9 11 12 12 12 11 11 8 5 4