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Monthly climate in Saint George, Utah, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Saint George features a cold semi-arid climate (BSk). Temperatures typically range between 5 °C (40 °F) and 31 °C (87 °F) through the year, but rarely can drop to -9 °C (16 °F) or can rise to as high as 43 °C (110 °F). The average annual precipitation amounts to about 272 mm (10.7 inches) and receives 41 rainy days on the 1 mm (0.04 inches) threshold annually. Saint George enjoys an average of 3590 hours of sunshine throughout the year, and daylight varies from 9 hours 38 minutes to 14 hours 39 minutes per day.

Monthly average temperatures in Saint George, Utah, United States §

The warmest months in Saint George are June, July and August, with daily mean temperatures ranging from 28 to 31 °C (83 - 87 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 6 °C (40 - 44 °F) throughout the day. On average each year, Saint George experiences 146 days above 25 °C (77.0 °F) and 59 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Saint George, 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 18°C
(64°F)		 21°C
(69°F)		 29°C
(85°F)		 33°C
(92°F)		 38°C
(100°F)		 42°C
(108°F)		 43°C
(110°F)		 42°C
(108°F)		 41°C
(107°F)		 34°C
(93°F)		 27°C
(81°F)		 20°C
(68°F)
Mean maximum 15°C
(60°F)		 19°C
(66°F)		 25°C
(77°F)		 30°C
(87°F)		 34°C
(94°F)		 38°C
(100°F)		 41°C
(106°F)		 40°C
(105°F)		 39°C
(102°F)		 30°C
(87°F)		 24°C
(75°F)		 17°C
(63°F)
Average high 11°C
(51°F)		 13°C
(55°F)		 17°C
(63°F)		 23°C
(74°F)		 27°C
(81°F)		 35°C
(95°F)		 37°C
(98°F)		 36°C
(98°F)		 32°C
(90°F)		 23°C
(74°F)		 18°C
(64°F)		 11°C
(52°F)
Daily mean 5°C
(40°F)		 6°C
(44°F)		 11°C
(52°F)		 16°C
(62°F)		 21°C
(70°F)		 28°C
(83°F)		 31°C
(87°F)		 30°C
(86°F)		 25°C
(77°F)		 16°C
(61°F)		 11°C
(51°F)		 5°C
(41°F)
Average low -1°C
(31°F)		 0°C
(33°F)		 4°C
(40°F)		 9°C
(48°F)		 13°C
(55°F)		 19°C
(67°F)		 23°C
(74°F)		 22°C
(72°F)		 17°C
(63°F)		 9°C
(48°F)		 3°C
(38°F)		 -1°C
(31°F)
Mean minimum -7°C
(20°F)		 -6°C
(21°F)		 -2°C
(28°F)		 1°C
(34°F)		 7°C
(44°F)		 13°C
(55°F)		 18°C
(64°F)		 17°C
(62°F)		 10°C
(50°F)		 0°C
(33°F)		 -5°C
(24°F)		 -6°C
(21°F)
Minimum -9°C
(16°F)		 -9°C
(16°F)		 -4°C
(24°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(52°F)		 15°C
(59°F)		 15°C
(59°F)		 6°C
(43°F)		 -5°C
(23°F)		 -7°C
(20°F)		 -8°C
(18°F)

Compare climate in Saint George with other places

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

Monthly average precipitation in Saint George, Utah, United States §

Saint George usually has the most precipitation in January, February and March, with an average of 6 rainy days and 43 mm (1.7 inches) of precipitation per month. The driest months in Saint George are June, August and September. On average, 7 mm (0.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Saint George, 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) 39 (1.6) 38 (1.5) 51 (2.0) 14 (0.5) 14 (0.6) 1 (0.0) 18 (0.7) 11 (0.4) 8 (0.3) 19 (0.8) 30 (1.2) 29 (1.2)
Average precipitation days (≥ 1 mm) 5 6 9 2 3 0 4 2 1 2 2 5

Monthly sunshine hours in Saint George, Utah, United States §

The sunniest months in Saint George are May, June and July, when the sun shines an average of 12 hours 23 minutes a day. Least sunny months in Saint George: January, February and December receive an average of 6 hours 48 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Saint George, 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 173 227 280 324 370 385 383 361 320 292 250 217
Mean daily daylight hours 9h 55m 10h 49m 11h 59m 13h 10m 14h 10m 14h 39m 14h 23m 13h 30m 12h 21m 11h 11m 10h 9m 9h 38m

Solar UV radiation in Saint George, Utah, United States §

Saint George 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 Saint George UV Index data.

Average daily maximum UV levels by month for Saint George, 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 6 8 10 11 12 12 11 10 7 5 4

Detailed Monthly Weather Insights for Saint George, Utah, United States

Discover in-depth weather details for every month in Saint George. 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 Saint George'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.