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Monthly climate in Monticello, Utah, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Monticello features a cold semi-arid climate (BSk).Temperatures typically range between -3 °C (27 °F) and 24 °C (76 °F) through the year, but rarely can drop to -19 °C (-2 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 357 mm (14.1 inches) and receives 66 rainy days on the 1 mm (0.04 inches) threshold annually.Monticello enjoys an average of 3607 hours of sunshine throughout the year, and daylight varies from 9 hours 34 minutes to 14 hours 44 minutes per day.

Monthly average temperatures in Monticello, Utah, United States §

The warmest months in Monticello are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (72 - 76 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -3 to 0 °C (27 - 31 °F) throughout the day. On average each year, Monticello experiences 98 days above 25 °C (77.0 °F) and 126 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Monticello, Utah, 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 11°C
(53°F)		 14°C
(57°F)		 23°C
(74°F)		 26°C
(80°F)		 31°C
(88°F)		 37°C
(99°F)		 37°C
(99°F)		 35°C
(96°F)		 34°C
(94°F)		 27°C
(81°F)		 20°C
(69°F)		 14°C
(58°F)
Mean maximum 7°C
(45°F)		 11°C
(52°F)		 19°C
(66°F)		 24°C
(75°F)		 28°C
(83°F)		 32°C
(91°F)		 35°C
(96°F)		 33°C
(93°F)		 33°C
(91°F)		 25°C
(77°F)		 18°C
(64°F)		 11°C
(51°F)
Average high 3°C
(37°F)		 5°C
(42°F)		 11°C
(52°F)		 17°C
(63°F)		 22°C
(72°F)		 29°C
(85°F)		 31°C
(88°F)		 30°C
(87°F)		 26°C
(79°F)		 17°C
(63°F)		 12°C
(53°F)		 4°C
(40°F)
Daily mean -3°C
(27°F)		 -0°C
(31°F)		 5°C
(41°F)		 10°C
(50°F)		 15°C
(59°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(74°F)		 18°C
(65°F)		 10°C
(50°F)		 4°C
(40°F)		 -2°C
(29°F)
Average low -8°C
(19°F)		 -6°C
(22°F)		 -1°C
(30°F)		 3°C
(37°F)		 7°C
(45°F)		 13°C
(56°F)		 17°C
(62°F)		 16°C
(60°F)		 11°C
(53°F)		 3°C
(38°F)		 -2°C
(30°F)		 -7°C
(20°F)
Mean minimum -17°C
(2°F)		 -15°C
(6°F)		 -10°C
(15°F)		 -6°C
(21°F)		 0°C
(33°F)		 6°C
(43°F)		 12°C
(53°F)		 11°C
(52°F)		 3°C
(39°F)		 -7°C
(20°F)		 -9°C
(16°F)		 -14°C
(6°F)
Minimum -19°C
(-2°F)		 -19°C
(-1°F)		 -11°C
(12°F)		 -9°C
(16°F)		 -3°C
(28°F)		 3°C
(38°F)		 8°C
(47°F)		 8°C
(46°F)		 -1°C
(31°F)		 -13°C
(9°F)		 -13°C
(9°F)		 -18°C
(0°F)

Compare climate in Monticello with other places

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

Monthly average precipitation in Monticello, Utah, United States §

Monticello usually has the most precipitation in February, March and October, with an average of 7 rainy days and 44 mm (1.7 inches) of precipitation per month.The driest months in Monticello are April, June and November. On average, 16 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Monticello, Utah, 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) 35 (1.4) 43 (1.7) 53 (2.1) 18 (0.7) 28 (1.1) 10 (0.4) 32 (1.3) 21 (0.8) 26 (1.0) 37 (1.4) 19 (0.8) 34 (1.3)
Average precipitation days (≥ 1 mm) 6 7 9 4 5 2 9 4 4 6 4 6

Monthly sunshine hours in Monticello, Utah, United States §

The sunniest months in Monticello are May, June and July, when the sun shines an average of 12 hours 20 minutes a day.Least sunny months in Monticello: January, February and December receive an average of 6 hours 57 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Monticello, Utah, 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 181 224 285 326 367 381 387 363 316 289 255 226
Mean daily daylight hours 9h 52m 10h 47m 11h 59m 13h 12m 14h 13m 14h 44m 14h 27m 13h 32m 12h 22m 11h 9m 10h 6m 9h 34m

Solar UV radiation in Monticello, Utah, United States §

Monticello experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 12 - 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 Monticello UV Index data.

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