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Monthly climate in Twain Harte, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Twain Harte features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 6 °C (43 °F) and 25 °C (78 °F) through the year, but rarely can drop to -11 °C (13 °F) or can rise to as high as 39 °C (103 °F).The average annual precipitation amounts to about 1191 mm (46.9 inches) and receives 66 rainy days on the 1 mm (0.04 inches) threshold annually.Twain Harte enjoys an average of 3499 hours of sunshine throughout the year, and daylight varies from 9 hours 33 minutes to 14 hours 44 minutes per day.

Monthly average temperatures in Twain Harte, California, United States §

The warmest months in Twain Harte are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (70 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 7 °C (43 - 44 °F) throughout the day. On average each year, Twain Harte experiences 110 days above 25 °C (77.0 °F) and 36 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Twain Harte, 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 21°C
(70°F)		 23°C
(74°F)		 25°C
(78°F)		 28°C
(83°F)		 33°C
(92°F)		 38°C
(100°F)		 39°C
(103°F)		 39°C
(103°F)		 39°C
(103°F)		 33°C
(91°F)		 26°C
(79°F)		 23°C
(73°F)
Mean maximum 18°C
(65°F)		 20°C
(68°F)		 23°C
(74°F)		 26°C
(79°F)		 30°C
(86°F)		 33°C
(93°F)		 37°C
(99°F)		 37°C
(99°F)		 37°C
(98°F)		 29°C
(85°F)		 24°C
(75°F)		 19°C
(67°F)
Average high 12°C
(54°F)		 13°C
(56°F)		 14°C
(58°F)		 18°C
(66°F)		 22°C
(72°F)		 28°C
(83°F)		 33°C
(91°F)		 32°C
(91°F)		 29°C
(84°F)		 23°C
(74°F)		 17°C
(63°F)		 12°C
(54°F)
Daily mean 6°C
(44°F)		 7°C
(44°F)		 8°C
(47°F)		 12°C
(54°F)		 15°C
(60°F)		 21°C
(70°F)		 25°C
(78°F)		 25°C
(77°F)		 21°C
(70°F)		 15°C
(59°F)		 10°C
(50°F)		 6°C
(43°F)
Average low 2°C
(36°F)		 1°C
(35°F)		 3°C
(37°F)		 5°C
(42°F)		 8°C
(48°F)		 13°C
(56°F)		 17°C
(62°F)		 16°C
(62°F)		 13°C
(56°F)		 8°C
(46°F)		 4°C
(40°F)		 1°C
(35°F)
Mean minimum -5°C
(24°F)		 -6°C
(22°F)		 -4°C
(26°F)		 -1°C
(30°F)		 3°C
(38°F)		 7°C
(44°F)		 13°C
(56°F)		 12°C
(54°F)		 7°C
(46°F)		 2°C
(36°F)		 -1°C
(30°F)		 -4°C
(26°F)
Minimum -9°C
(15°F)		 -11°C
(13°F)		 -6°C
(21°F)		 -5°C
(24°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(51°F)		 11°C
(52°F)		 6°C
(42°F)		 1°C
(33°F)		 -4°C
(25°F)		 -5°C
(23°F)

Compare climate in Twain Harte with other places

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

Monthly average precipitation in Twain Harte, California, United States §

Twain Harte usually has the most precipitation in January, February and March, with an average of 11 rainy days and 230 mm (9.1 inches) of precipitation per month.The driest months in Twain Harte are July, August and September. On average, 2 mm (0.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Twain Harte, 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) 222 (8.8) 223 (8.8) 246 (9.7) 102 (4.0) 62 (2.5) 6 (0.2) 0 (0.0) 1 (0.0) 6 (0.2) 50 (2.0) 105 (4.1) 167 (6.6)
Average precipitation days (≥ 1 mm) 9 10 14 8 6 1 0 0 1 2 6 9

Monthly sunshine hours in Twain Harte, California, United States §

The sunniest months in Twain Harte are June, July and August, when the sun shines an average of 12 hours 29 minutes a day.Least sunny months in Twain Harte: January, February and December receive an average of 6 hours 20 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Twain Harte, 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 159 214 259 305 363 388 395 364 320 290 234 203
Mean daily daylight hours 9h 51m 10h 47m 11h 59m 13h 12m 14h 14m 14h 44m 14h 27m 13h 32m 12h 22m 11h 9m 10h 5m 9h 33m

Solar UV radiation in Twain Harte, California, United States §

Twain Harte 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 Twain Harte UV Index data.

Average daily maximum UV levels by month for Twain Harte, 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 8 9 11 11 11 10 9 7 4 3