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Monthly climate in Vernal, Utah, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Vernal features a cold semi-arid climate (BSk). Temperatures typically range between -6 °C (21 °F) and 25 °C (77 °F) through the year, but rarely can drop to -26 °C (-14 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 317 mm (12.5 inches) and receives 63 rainy days on the 1 mm (0.04 inches) threshold annually. Vernal enjoys an average of 3503 hours of sunshine throughout the year, and daylight varies from 9 hours 19 minutes to 15 hours 0 minutes per day.

Monthly average temperatures in Vernal, Utah, United States §

The warmest months in Vernal are June, July and August, with daily mean temperatures ranging from 21 to 25 °C (70 - 77 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -6 to -4 °C (21 - 25 °F) throughout the day. On average each year, Vernal 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 Vernal, 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 7°C
(46°F)		 14°C
(57°F)		 21°C
(70°F)		 25°C
(78°F)		 30°C
(87°F)		 37°C
(100°F)		 39°C
(102°F)		 37°C
(99°F)		 35°C
(95°F)		 25°C
(78°F)		 19°C
(67°F)		 12°C
(55°F)
Mean maximum 4°C
(40°F)		 9°C
(49°F)		 17°C
(63°F)		 24°C
(75°F)		 28°C
(83°F)		 32°C
(89°F)		 37°C
(98°F)		 35°C
(95°F)		 33°C
(92°F)		 23°C
(74°F)		 17°C
(62°F)		 8°C
(47°F)
Average high -1°C
(30°F)		 2°C
(36°F)		 9°C
(48°F)		 15°C
(59°F)		 21°C
(70°F)		 29°C
(84°F)		 32°C
(91°F)		 31°C
(88°F)		 26°C
(78°F)		 14°C
(58°F)		 9°C
(48°F)		 1°C
(34°F)
Daily mean -6°C
(21°F)		 -4°C
(25°F)		 2°C
(37°F)		 8°C
(46°F)		 14°C
(57°F)		 21°C
(70°F)		 25°C
(77°F)		 23°C
(73°F)		 18°C
(64°F)		 8°C
(46°F)		 3°C
(37°F)		 -4°C
(25°F)
Average low -11°C
(12°F)		 -9°C
(16°F)		 -3°C
(27°F)		 1°C
(34°F)		 6°C
(43°F)		 12°C
(54°F)		 16°C
(61°F)		 15°C
(59°F)		 10°C
(50°F)		 2°C
(35°F)		 -2°C
(28°F)		 -9°C
(16°F)
Mean minimum -21°C
(-5°F)		 -20°C
(-4°F)		 -14°C
(7°F)		 -7°C
(20°F)		 -1°C
(31°F)		 4°C
(39°F)		 10°C
(51°F)		 10°C
(50°F)		 2°C
(36°F)		 -10°C
(14°F)		 -11°C
(13°F)		 -19°C
(-1°F)
Minimum -26°C
(-14°F)		 -26°C
(-14°F)		 -18°C
(-0°F)		 -13°C
(10°F)		 -5°C
(24°F)		 1°C
(35°F)		 7°C
(45°F)		 8°C
(47°F)		 0°C
(33°F)		 -17°C
(2°F)		 -14°C
(7°F)		 -21°C
(-5°F)

Compare climate in Vernal with other places

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

Monthly average precipitation in Vernal, Utah, United States §

Vernal usually has the most precipitation in February, March and October, with an average of 7 rainy days and 37 mm (1.5 inches) of precipitation per month. The driest months in Vernal are June, July and August. On average, 15 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Vernal, 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) 26 (1.0) 38 (1.5) 40 (1.6) 31 (1.2) 33 (1.3) 17 (0.7) 11 (0.4) 18 (0.7) 19 (0.8) 35 (1.4) 22 (0.9) 28 (1.1)
Average precipitation days (≥ 1 mm) 6 7 9 7 8 3 3 3 2 5 4 6

Monthly sunshine hours in Vernal, Utah, United States §

The sunniest months in Vernal are May, June and July, when the sun shines an average of 12 hours 5 minutes a day. Least sunny months in Vernal: January, February and December receive an average of 6 hours 56 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Vernal, 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 178 229 275 310 353 381 377 352 307 272 240 223
Mean daily daylight hours 9h 38m 10h 40m 11h 58m 13h 18m 14h 26m 15h 0m 14h 41m 13h 41m 12h 24m 11h 4m 9h 54m 9h 19m

Solar UV radiation in Vernal, Utah, United States §

Vernal 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, 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 Vernal UV Index data.

Average daily maximum UV levels by month for Vernal, 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) 3 6 8 10 11 12 12 11 10 7 5 3

Detailed Monthly Weather Insights for Vernal, Utah, United States

Discover in-depth weather details for every month in Vernal. 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 Vernal'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.