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Monthly climate in Highland, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Highland features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 9 °C (49 °F) and 26 °C (79 °F) through the year, but rarely can drop to -5 °C (24 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 317 mm (12.5 inches) and receives 41 rainy days on the 1 mm (0.04 inches) threshold annually.Highland enjoys an average of 3658 hours of sunshine throughout the year, and daylight varies from 9 hours 53 minutes to 14 hours 23 minutes per day.

Monthly average temperatures in Highland, California, United States §

The warmest months in Highland are July, August and September, with daily mean temperatures ranging from 23 to 26 °C (74 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 9 to 9 °C (49 - 49 °F) throughout the day. On average each year, Highland experiences 139 days above 25 °C (77.0 °F) and 6 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Highland, 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 24°C
(76°F)		 25°C
(77°F)		 29°C
(84°F)		 32°C
(89°F)		 34°C
(94°F)		 39°C
(103°F)		 41°C
(106°F)		 39°C
(103°F)		 42°C
(108°F)		 36°C
(97°F)		 28°C
(83°F)		 24°C
(76°F)
Mean maximum 21°C
(71°F)		 22°C
(72°F)		 26°C
(79°F)		 30°C
(87°F)		 32°C
(89°F)		 35°C
(95°F)		 38°C
(101°F)		 38°C
(101°F)		 38°C
(100°F)		 32°C
(89°F)		 28°C
(82°F)		 22°C
(73°F)
Average high 15°C
(59°F)		 15°C
(60°F)		 17°C
(63°F)		 22°C
(72°F)		 24°C
(76°F)		 30°C
(86°F)		 33°C
(92°F)		 33°C
(92°F)		 30°C
(87°F)		 25°C
(77°F)		 20°C
(69°F)		 15°C
(59°F)
Daily mean 9°C
(49°F)		 9°C
(49°F)		 11°C
(52°F)		 15°C
(60°F)		 17°C
(64°F)		 23°C
(73°F)		 26°C
(79°F)		 26°C
(79°F)		 23°C
(74°F)		 18°C
(65°F)		 14°C
(57°F)		 9°C
(49°F)
Average low 5°C
(41°F)		 5°C
(40°F)		 6°C
(43°F)		 9°C
(49°F)		 11°C
(52°F)		 16°C
(61°F)		 19°C
(67°F)		 20°C
(67°F)		 17°C
(63°F)		 12°C
(53°F)		 8°C
(47°F)		 5°C
(41°F)
Mean minimum -1°C
(31°F)		 -1°C
(30°F)		 0°C
(33°F)		 4°C
(39°F)		 5°C
(41°F)		 10°C
(50°F)		 15°C
(60°F)		 15°C
(59°F)		 12°C
(53°F)		 6°C
(43°F)		 3°C
(37°F)		 -1°C
(31°F)
Minimum -5°C
(24°F)		 -4°C
(24°F)		 -2°C
(29°F)		 3°C
(37°F)		 3°C
(37°F)		 9°C
(48°F)		 13°C
(55°F)		 14°C
(57°F)		 9°C
(48°F)		 3°C
(38°F)		 -1°C
(31°F)		 -4°C
(25°F)

Compare climate in Highland with other places

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

Monthly average precipitation in Highland, California, United States §

Highland usually has the most precipitation in February, March and December, with an average of 6 rainy days and 55 mm (2.2 inches) of precipitation per month.The driest months in Highland are June, September and October. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Highland, 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) 51 (2.0) 56 (2.2) 52 (2.1) 24 (0.9) 13 (0.5) 4 (0.1) 12 (0.5) 11 (0.4) 9 (0.4) 8 (0.3) 19 (0.8) 56 (2.2)
Average precipitation days (≥ 1 mm) 6 6 9 2 3 1 2 2 2 1 2 5

Monthly sunshine hours in Highland, California, United States §

The sunniest months in Highland are May, June and July, when the sun shines an average of 12 hours 17 minutes a day.Least sunny months in Highland: January, February and December receive an average of 7 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Highland, 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 190 243 294 327 369 379 382 362 321 299 257 227
Mean daily daylight hours 10h 8m 10h 57m 11h 59m 13h 3m 13h 57m 14h 23m 14h 9m 13h 21m 12h 20m 11h 16m 10h 21m 9h 53m

Solar UV radiation in Highland, California, United States §

Highland experiences the highest level of ultraviolet (UV) radiation in April, June and July, 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 5. For more detailed information, check out our hourly Highland UV Index data.

Average daily maximum UV levels by month for Highland, 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 11 12 12 11 10 8 5 4