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Monthly climate in Hamilton City, California, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Hamilton City features a hot-summer Mediterranean climate (Csa).Temperatures typically range between 10 °C (50 °F) and 31 °C (89 °F) through the year, but rarely can drop to -4 °C (25 °F) or can rise to as high as 47 °C (116 °F).The average annual precipitation amounts to about 536 mm (21.1 inches) and receives 49 rainy days on the 1 mm (0.04 inches) threshold annually.Hamilton City enjoys an average of 3386 hours of sunshine throughout the year, and daylight varies from 9 hours 23 minutes to 14 hours 55 minutes per day.

Monthly average temperatures in Hamilton City, California, United States §

The warmest months in Hamilton City are June, July and August, with daily mean temperatures ranging from 28 to 31 °C (83 - 89 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 12 °C (50 - 53 °F) throughout the day. On average each year, Hamilton City experiences 175 days above 25 °C (77.0 °F) and 5 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Hamilton City, 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)		 30°C
(87°F)		 33°C
(91°F)		 36°C
(97°F)		 42°C
(108°F)		 46°C
(115°F)		 47°C
(116°F)		 45°C
(114°F)		 45°C
(113°F)		 39°C
(103°F)		 31°C
(87°F)		 25°C
(77°F)
Mean maximum 21°C
(71°F)		 25°C
(78°F)		 28°C
(83°F)		 33°C
(92°F)		 39°C
(102°F)		 42°C
(108°F)		 45°C
(113°F)		 44°C
(111°F)		 42°C
(108°F)		 35°C
(96°F)		 28°C
(83°F)		 22°C
(71°F)
Average high 16°C
(60°F)		 19°C
(66°F)		 20°C
(69°F)		 25°C
(77°F)		 30°C
(86°F)		 36°C
(97°F)		 40°C
(104°F)		 38°C
(101°F)		 34°C
(94°F)		 28°C
(83°F)		 21°C
(70°F)		 15°C
(60°F)
Daily mean 10°C
(50°F)		 12°C
(53°F)		 14°C
(57°F)		 18°C
(65°F)		 23°C
(73°F)		 28°C
(83°F)		 31°C
(89°F)		 30°C
(86°F)		 26°C
(78°F)		 19°C
(67°F)		 13°C
(56°F)		 10°C
(50°F)
Average low 6°C
(43°F)		 6°C
(43°F)		 8°C
(47°F)		 11°C
(53°F)		 15°C
(60°F)		 20°C
(69°F)		 23°C
(73°F)		 21°C
(71°F)		 17°C
(63°F)		 12°C
(53°F)		 7°C
(46°F)		 5°C
(41°F)
Mean minimum -1°C
(31°F)		 -1°C
(31°F)		 2°C
(35°F)		 5°C
(41°F)		 9°C
(49°F)		 14°C
(58°F)		 19°C
(66°F)		 17°C
(62°F)		 11°C
(52°F)		 5°C
(42°F)		 0°C
(33°F)		 -0°C
(32°F)
Minimum -2°C
(28°F)		 -4°C
(25°F)		 -0°C
(32°F)		 3°C
(38°F)		 5°C
(41°F)		 12°C
(54°F)		 17°C
(64°F)		 15°C
(60°F)		 8°C
(47°F)		 4°C
(40°F)		 -2°C
(29°F)		 -2°C
(28°F)

Compare climate in Hamilton City with other places

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

Monthly average precipitation in Hamilton City, California, United States §

Hamilton City usually has the most precipitation in January, February and March, with an average of 8 rainy days and 101 mm (4.0 inches) of precipitation per month.The driest months in Hamilton City are July, August and September. On average, 1 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hamilton City, 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) 106 (4.2) 114 (4.5) 82 (3.2) 36 (1.4) 31 (1.2) 4 (0.1) 0 (0.0) 1 (0.0) 2 (0.1) 29 (1.1) 51 (2.0) 81 (3.2)
Average precipitation days (≥ 1 mm) 8 7 10 5 3 1 0 0 0 2 5 8

Monthly sunshine hours in Hamilton City, California, United States §

The sunniest months in Hamilton City are May, June and July, when the sun shines an average of 12 hours 29 minutes a day.Least sunny months in Hamilton City: January, February and December receive an average of 5 hours 43 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hamilton City, 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 136 202 250 296 361 387 400 358 315 281 215 181
Mean daily daylight hours 9h 42m 10h 42m 11h 58m 13h 17m 14h 22m 14h 55m 14h 37m 13h 38m 12h 23m 11h 5m 9h 57m 9h 23m

Solar UV radiation in Hamilton City, California, United States §

Hamilton City experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / Extreme category of sun exposure.January, February 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 Hamilton City UV Index data.

Average daily maximum UV levels by month for Hamilton City, 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 4 7 8 10 11 10 10 9 6 4 3