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Monthly climate in Hilmar-Irwin, California, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Hilmar-Irwin features a hot-summer Mediterranean climate (Csa). Temperatures typically range between 10 °C (50 °F) and 29 °C (84 °F) through the year, but rarely can drop to -2 °C (29 °F) or can rise to as high as 44 °C (111 °F). The average annual precipitation amounts to about 441 mm (17.4 inches) and receives 43 rainy days on the 1 mm (0.04 inches) threshold annually. Hilmar-Irwin enjoys an average of 3504 hours of sunshine throughout the year, and daylight varies from 9 hours 36 minutes to 14 hours 41 minutes per day.

Monthly average temperatures in Hilmar-Irwin, California, United States §

The warmest months in Hilmar-Irwin are June, July and August, with daily mean temperatures ranging from 26 to 29 °C (80 - 84 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 10 to 11 °C (50 - 53 °F) throughout the day. On average each year, Hilmar-Irwin experiences 166 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 Hilmar-Irwin, 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)		 28°C
(82°F)		 31°C
(87°F)		 35°C
(94°F)		 42°C
(107°F)		 43°C
(110°F)		 42°C
(108°F)		 44°C
(111°F)		 43°C
(109°F)		 36°C
(96°F)		 27°C
(80°F)		 22°C
(73°F)
Mean maximum 20°C
(69°F)		 23°C
(74°F)		 28°C
(83°F)		 32°C
(90°F)		 37°C
(99°F)		 40°C
(105°F)		 41°C
(106°F)		 41°C
(106°F)		 39°C
(103°F)		 33°C
(91°F)		 25°C
(78°F)		 20°C
(68°F)
Average high 15°C
(60°F)		 18°C
(64°F)		 20°C
(68°F)		 25°C
(77°F)		 29°C
(85°F)		 35°C
(95°F)		 37°C
(99°F)		 36°C
(97°F)		 33°C
(91°F)		 27°C
(81°F)		 20°C
(69°F)		 15°C
(60°F)
Daily mean 10°C
(51°F)		 11°C
(53°F)		 14°C
(57°F)		 18°C
(64°F)		 22°C
(71°F)		 26°C
(80°F)		 29°C
(84°F)		 28°C
(82°F)		 25°C
(77°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
(59°F)		 19°C
(66°F)		 21°C
(70°F)		 20°C
(69°F)		 17°C
(64°F)		 12°C
(54°F)		 8°C
(46°F)		 6°C
(42°F)
Mean minimum 0°C
(33°F)		 0°C
(33°F)		 3°C
(37°F)		 6°C
(43°F)		 10°C
(50°F)		 13°C
(56°F)		 17°C
(63°F)		 16°C
(62°F)		 12°C
(54°F)		 7°C
(44°F)		 2°C
(37°F)		 1°C
(34°F)
Minimum -1°C
(31°F)		 -1°C
(30°F)		 2°C
(36°F)		 5°C
(41°F)		 7°C
(45°F)		 12°C
(54°F)		 16°C
(61°F)		 15°C
(59°F)		 11°C
(51°F)		 5°C
(41°F)		 -0°C
(32°F)		 -2°C
(29°F)

Compare climate in Hilmar-Irwin with other places

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

Monthly average precipitation in Hilmar-Irwin, California, United States §

Hilmar-Irwin usually has the most precipitation in January, March and December, with an average of 8 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Hilmar-Irwin are July, August and September. On average, 0 mm (0.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Hilmar-Irwin, 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) 93 (3.6) 72 (2.8) 81 (3.2) 33 (1.3) 21 (0.8) 2 (0.1) 0 (0.0) 0 (0.0) 1 (0.1) 16 (0.6) 34 (1.4) 87 (3.4)
Average precipitation days (≥ 1 mm) 7 7 10 4 2 0 0 0 0 1 4 8

Monthly sunshine hours in Hilmar-Irwin, California, United States §

The sunniest months in Hilmar-Irwin are May, June and July, when the sun shines an average of 12 hours 27 minutes a day. Least sunny months in Hilmar-Irwin: January, February and December receive an average of 6 hours 27 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Hilmar-Irwin, 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 162 219 262 305 366 385 394 361 317 289 234 206
Mean daily daylight hours 9h 53m 10h 48m 11h 59m 13h 11m 14h 12m 14h 41m 14h 25m 13h 31m 12h 22m 11h 10m 10h 7m 9h 36m

Solar UV radiation in Hilmar-Irwin, California, United States §

Hilmar-Irwin experiences the highest level of ultraviolet (UV) radiation in June, July 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, 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 Hilmar-Irwin UV Index data.

Average daily maximum UV levels by month for Hilmar-Irwin, 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 8 10 11 11 10 9 6 4 3

Detailed Monthly Weather Insights for Hilmar-Irwin, California, United States

Discover in-depth weather details for every month in Hilmar-Irwin. 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 Hilmar-Irwin'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.