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Monthly climate in Cortez, Colorado, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Cortez features a cold semi-arid climate (BSk).Temperatures typically range between -4 °C (25 °F) and 23 °C (74 °F) through the year, but rarely can drop to -23 °C (-9 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 437 mm (17.2 inches) and receives 68 rainy days on the 1 mm (0.04 inches) threshold annually.Cortez enjoys an average of 3617 hours of sunshine throughout the year, and daylight varies from 9 hours 37 minutes to 14 hours 40 minutes per day.

Monthly average temperatures in Cortez, Colorado, United States §

The warmest months in Cortez are June, July and August, with daily mean temperatures ranging from 21 to 23 °C (70 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -4 to -1 °C (25 - 30 °F) throughout the day. On average each year, Cortez experiences 95 days above 25 °C (77.0 °F) and 144 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Cortez, 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 11°C
(52°F)		 15°C
(59°F)		 21°C
(70°F)		 25°C
(78°F)		 30°C
(87°F)		 36°C
(97°F)		 37°C
(99°F)		 35°C
(95°F)		 34°C
(93°F)		 27°C
(80°F)		 21°C
(70°F)		 14°C
(58°F)
Mean maximum 8°C
(47°F)		 11°C
(52°F)		 18°C
(64°F)		 23°C
(74°F)		 28°C
(82°F)		 32°C
(89°F)		 35°C
(94°F)		 33°C
(91°F)		 32°C
(90°F)		 24°C
(76°F)		 18°C
(64°F)		 11°C
(52°F)
Average high 3°C
(38°F)		 5°C
(42°F)		 10°C
(50°F)		 16°C
(62°F)		 22°C
(71°F)		 29°C
(84°F)		 30°C
(87°F)		 30°C
(86°F)		 25°C
(78°F)		 17°C
(63°F)		 12°C
(53°F)		 4°C
(40°F)
Daily mean -4°C
(25°F)		 -1°C
(30°F)		 3°C
(38°F)		 9°C
(49°F)		 14°C
(58°F)		 21°C
(70°F)		 23°C
(74°F)		 22°C
(72°F)		 17°C
(64°F)		 10°C
(50°F)		 4°C
(39°F)		 -3°C
(27°F)
Average low -10°C
(15°F)		 -7°C
(19°F)		 -3°C
(26°F)		 1°C
(34°F)		 6°C
(43°F)		 12°C
(53°F)		 16°C
(60°F)		 14°C
(57°F)		 10°C
(50°F)		 2°C
(37°F)		 -3°C
(27°F)		 -9°C
(16°F)
Mean minimum -20°C
(-3°F)		 -18°C
(-0°F)		 -13°C
(8°F)		 -7°C
(19°F)		 -1°C
(31°F)		 5°C
(41°F)		 10°C
(50°F)		 9°C
(49°F)		 1°C
(35°F)		 -6°C
(22°F)		 -10°C
(13°F)		 -18°C
(-0°F)
Minimum -21°C
(-6°F)		 -23°C
(-9°F)		 -17°C
(2°F)		 -9°C
(17°F)		 -3°C
(27°F)		 2°C
(36°F)		 7°C
(44°F)		 7°C
(45°F)		 -3°C
(26°F)		 -10°C
(14°F)		 -16°C
(3°F)		 -21°C
(-6°F)

Compare climate in Cortez with other places

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

Monthly average precipitation in Cortez, Colorado, United States §

Cortez usually has the most precipitation in February, March and December, with an average of 8 rainy days and 58 mm (2.3 inches) of precipitation per month.The driest months in Cortez are April, June and August. On average, 16 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Cortez, 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) 48 (1.9) 55 (2.2) 68 (2.7) 21 (0.8) 32 (1.3) 12 (0.5) 37 (1.4) 15 (0.6) 35 (1.4) 37 (1.4) 27 (1.1) 51 (2.0)
Average precipitation days (≥ 1 mm) 7 8 10 4 5 2 7 3 5 6 4 7

Monthly sunshine hours in Cortez, Colorado, United States §

The sunniest months in Cortez are May, June and July, when the sun shines an average of 12 hours 16 minutes a day.Least sunny months in Cortez: January, February and December receive an average of 7 hours 3 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Cortez, 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 183 229 292 326 365 380 383 361 316 292 256 228
Mean daily daylight hours 9h 54m 10h 49m 11h 59m 13h 11m 14h 11m 14h 40m 14h 24m 13h 30m 12h 22m 11h 10m 10h 8m 9h 37m

Solar UV radiation in Cortez, Colorado, United States §

Cortez experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 12 - 13, which corresponds to the Extreme category of sun exposure.January, November and December are in the Moderate / High exposure category. In these months, the maximum values of the UV index do not exceed 6. For more detailed information, check out our hourly Cortez UV Index data.

Average daily maximum UV levels by month for Cortez, 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) 5 7 9 11 12 13 12 11 10 8 6 4