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Monthly climate in Holly, Colorado, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Holly features a cold semi-arid climate (BSk).Temperatures typically range between 1 °C (34 °F) and 26 °C (80 °F) through the year, but rarely can drop to -33 °C (-28 °F) or can rise to as high as 42 °C (107 °F).The average annual precipitation amounts to about 411 mm (16.2 inches) and receives 63 rainy days on the 1 mm (0.04 inches) threshold annually.Holly enjoys an average of 3485 hours of sunshine throughout the year, and daylight varies from 9 hours 33 minutes to 14 hours 45 minutes per day.

Monthly average temperatures in Holly, Colorado, United States §

The warmest months in Holly are June, July and August, with daily mean temperatures ranging from 25 to 26 °C (76 - 80 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 2 °C (34 - 37 °F) throughout the day. On average each year, Holly experiences 135 days above 25 °C (77.0 °F) and 108 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Holly, Colorado, 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 23°C
(73°F)		 32°C
(90°F)		 32°C
(90°F)		 33°C
(92°F)		 37°C
(99°F)		 40°C
(104°F)		 42°C
(107°F)		 41°C
(105°F)		 39°C
(102°F)		 34°C
(94°F)		 29°C
(85°F)		 24°C
(75°F)
Mean maximum 19°C
(67°F)		 26°C
(79°F)		 29°C
(85°F)		 32°C
(89°F)		 35°C
(95°F)		 38°C
(100°F)		 40°C
(105°F)		 38°C
(101°F)		 38°C
(100°F)		 33°C
(91°F)		 27°C
(81°F)		 21°C
(69°F)
Average high 9°C
(49°F)		 9°C
(49°F)		 16°C
(62°F)		 20°C
(69°F)		 25°C
(77°F)		 32°C
(90°F)		 34°C
(93°F)		 32°C
(90°F)		 30°C
(86°F)		 21°C
(69°F)		 16°C
(60°F)		 11°C
(52°F)
Daily mean 1°C
(34°F)		 1°C
(34°F)		 8°C
(47°F)		 12°C
(54°F)		 17°C
(64°F)		 25°C
(76°F)		 26°C
(80°F)		 25°C
(77°F)		 22°C
(72°F)		 13°C
(55°F)		 7°C
(45°F)		 2°C
(37°F)
Average low -5°C
(23°F)		 -6°C
(22°F)		 1°C
(34°F)		 4°C
(40°F)		 11°C
(51°F)		 17°C
(63°F)		 20°C
(68°F)		 18°C
(65°F)		 15°C
(59°F)		 6°C
(42°F)		 0°C
(33°F)		 -4°C
(25°F)
Mean minimum -16°C
(4°F)		 -17°C
(2°F)		 -8°C
(17°F)		 -5°C
(24°F)		 3°C
(37°F)		 11°C
(52°F)		 16°C
(60°F)		 14°C
(58°F)		 7°C
(44°F)		 -5°C
(23°F)		 -8°C
(18°F)		 -12°C
(10°F)
Minimum -21°C
(-6°F)		 -33°C
(-28°F)		 -16°C
(3°F)		 -8°C
(18°F)		 -1°C
(31°F)		 8°C
(47°F)		 15°C
(59°F)		 12°C
(53°F)		 2°C
(36°F)		 -9°C
(16°F)		 -13°C
(10°F)		 -17°C
(1°F)

Compare climate in Holly with other places

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

Monthly average precipitation in Holly, Colorado, United States §

Holly usually has the most precipitation in May, July and August, with an average of 10 rainy days and 61 mm (2.4 inches) of precipitation per month.The driest months in Holly are January, November and December. On average, 13 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Holly, Colorado, 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) 16 (0.6) 16 (0.6) 33 (1.3) 36 (1.4) 80 (3.1) 43 (1.7) 49 (1.9) 55 (2.2) 35 (1.4) 25 (1.0) 10 (0.4) 14 (0.6)
Average precipitation days (≥ 1 mm) 3 3 4 5 11 6 10 9 4 4 2 2

Monthly sunshine hours in Holly, Colorado, United States §

The sunniest months in Holly are June, July and August, when the sun shines an average of 11 hours 40 minutes a day.Least sunny months in Holly: January, February and December receive an average of 7 hours 25 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Holly, Colorado, 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 188 238 283 301 329 359 368 345 301 264 254 249
Mean daily daylight hours 9h 51m 10h 47m 11h 59m 13h 12m 14h 14m 14h 45m 14h 28m 13h 33m 12h 22m 11h 9m 10h 5m 9h 33m

Solar UV radiation in Holly, Colorado, United States §

Holly experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 11 - 12, which corresponds to the 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 5. For more detailed information, check out our hourly Holly UV Index data.

Average daily maximum UV levels by month for Holly, Colorado, 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 5 8 10 11 12 12 11 10 7 5 3