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Monthly climate in Delta, Utah, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Delta features a cold semi-arid climate (BSk). Temperatures typically range between 0 °C (32 °F) and 29 °C (85 °F) through the year, but rarely can drop to -24 °C (-12 °F) or can rise to as high as 41 °C (106 °F). The average annual precipitation amounts to about 237 mm (9.3 inches) and receives 45 rainy days on the 1 mm (0.04 inches) threshold annually. Delta enjoys an average of 3478 hours of sunshine throughout the year, and daylight varies from 9 hours 25 minutes to 14 hours 53 minutes per day.

Monthly average temperatures in Delta, Utah, United States §

The warmest months in Delta are June, July and August, with daily mean temperatures ranging from 25 to 29 °C (77 - 85 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 3 °C (32 - 37 °F) throughout the day. On average each year, Delta experiences 118 days above 25 °C (77.0 °F) and 103 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Delta, 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 17°C
(63°F)		 22°C
(73°F)		 28°C
(83°F)		 30°C
(87°F)		 36°C
(98°F)		 40°C
(105°F)		 41°C
(106°F)		 40°C
(105°F)		 38°C
(101°F)		 29°C
(85°F)		 25°C
(77°F)		 18°C
(65°F)
Mean maximum 13°C
(56°F)		 18°C
(65°F)		 23°C
(75°F)		 29°C
(85°F)		 33°C
(91°F)		 35°C
(95°F)		 39°C
(103°F)		 39°C
(102°F)		 37°C
(98°F)		 28°C
(82°F)		 21°C
(71°F)		 14°C
(57°F)
Average high 6°C
(44°F)		 9°C
(49°F)		 15°C
(59°F)		 20°C
(67°F)		 24°C
(76°F)		 32°C
(90°F)		 36°C
(97°F)		 35°C
(95°F)		 29°C
(85°F)		 19°C
(66°F)		 13°C
(56°F)		 6°C
(43°F)
Daily mean 0°C
(32°F)		 3°C
(37°F)		 8°C
(46°F)		 12°C
(54°F)		 17°C
(63°F)		 25°C
(77°F)		 29°C
(85°F)		 28°C
(82°F)		 22°C
(72°F)		 11°C
(53°F)		 6°C
(44°F)		 0°C
(32°F)
Average low -5°C
(23°F)		 -3°C
(26°F)		 1°C
(35°F)		 5°C
(41°F)		 9°C
(49°F)		 16°C
(61°F)		 21°C
(70°F)		 20°C
(68°F)		 14°C
(58°F)		 4°C
(40°F)		 -0°C
(32°F)		 -5°C
(23°F)
Mean minimum -17°C
(2°F)		 -15°C
(6°F)		 -9°C
(16°F)		 -4°C
(25°F)		 2°C
(36°F)		 8°C
(46°F)		 14°C
(58°F)		 14°C
(57°F)		 4°C
(40°F)		 -6°C
(21°F)		 -9°C
(17°F)		 -14°C
(8°F)
Minimum -24°C
(-12°F)		 -21°C
(-6°F)		 -15°C
(6°F)		 -6°C
(22°F)		 -1°C
(30°F)		 4°C
(39°F)		 11°C
(51°F)		 10°C
(50°F)		 0°C
(33°F)		 -11°C
(13°F)		 -11°C
(13°F)		 -16°C
(3°F)

Compare climate in Delta with other places

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

Monthly average precipitation in Delta, Utah, United States §

Delta usually has the most precipitation in February, March and December, with an average of 6 rainy days and 31 mm (1.2 inches) of precipitation per month. The driest months in Delta are June, July and August. On average, 5 mm (0.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Delta, 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) 24 (0.9) 28 (1.1) 40 (1.6) 24 (0.9) 24 (1.0) 4 (0.2) 6 (0.2) 7 (0.3) 9 (0.4) 26 (1.0) 19 (0.8) 26 (1.0)
Average precipitation days (≥ 1 mm) 5 5 8 6 5 0 1 1 2 4 3 5

Monthly sunshine hours in Delta, Utah, United States §

The sunniest months in Delta are May, June and July, when the sun shines an average of 12 hours 12 minutes a day. Least sunny months in Delta: January, February and December receive an average of 6 hours 30 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Delta, 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 164 211 266 304 363 381 379 359 312 279 240 214
Mean daily daylight hours 9h 44m 10h 43m 11h 58m 13h 16m 14h 20m 14h 53m 14h 35m 13h 37m 12h 23m 11h 6m 9h 59m 9h 25m

Solar UV radiation in Delta, Utah, United States §

Delta 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 Delta UV Index data.

Average daily maximum UV levels by month for Delta, 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 3

Detailed Monthly Weather Insights for Delta, Utah, United States

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