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Monthly climate in Delta, Ohio, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Delta features a humid continental climate (Dfa).Temperatures typically range between -2 °C (29 °F) and 24 °C (76 °F) through the year, but rarely can drop to -26 °C (-15 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1059 mm (41.7 inches) and receives 132 rainy days on the 1 mm (0.04 inches) threshold annually.Delta enjoys an average of 2892 hours of sunshine throughout the year, and daylight varies from 9 hours 13 minutes to 15 hours 6 minutes per day.

Monthly average temperatures in Delta, Ohio, United States §

The warmest months in Delta 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 -2 to 1 °C (29 - 34 °F) throughout the day. On average each year, Delta experiences 88 days above 25 °C (77.0 °F) and 101 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, Ohio, 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
(62°F)		 21°C
(70°F)		 26°C
(79°F)		 29°C
(84°F)		 35°C
(95°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(94°F)		 34°C
(93°F)		 32°C
(91°F)		 26°C
(79°F)		 17°C
(62°F)
Mean maximum 13°C
(56°F)		 16°C
(61°F)		 21°C
(70°F)		 26°C
(80°F)		 32°C
(89°F)		 33°C
(92°F)		 33°C
(93°F)		 32°C
(90°F)		 33°C
(91°F)		 29°C
(85°F)		 19°C
(66°F)		 16°C
(60°F)
Average high 2°C
(35°F)		 3°C
(38°F)		 9°C
(49°F)		 15°C
(59°F)		 21°C
(71°F)		 27°C
(80°F)		 29°C
(84°F)		 28°C
(82°F)		 25°C
(78°F)		 18°C
(65°F)		 9°C
(48°F)		 5°C
(41°F)
Daily mean -2°C
(29°F)		 -1°C
(30°F)		 4°C
(40°F)		 9°C
(49°F)		 16°C
(62°F)		 22°C
(72°F)		 24°C
(76°F)		 23°C
(73°F)		 20°C
(68°F)		 13°C
(56°F)		 5°C
(41°F)		 1°C
(34°F)
Average low -6°C
(22°F)		 -5°C
(23°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(53°F)		 17°C
(63°F)		 19°C
(67°F)		 18°C
(65°F)		 15°C
(59°F)		 9°C
(48°F)		 1°C
(34°F)		 -3°C
(28°F)
Mean minimum -17°C
(1°F)		 -18°C
(-0°F)		 -9°C
(15°F)		 -5°C
(24°F)		 2°C
(35°F)		 11°C
(52°F)		 14°C
(58°F)		 12°C
(54°F)		 7°C
(45°F)		 -0°C
(32°F)		 -9°C
(17°F)		 -12°C
(11°F)
Minimum -25°C
(-12°F)		 -26°C
(-15°F)		 -13°C
(10°F)		 -7°C
(19°F)		 -2°C
(29°F)		 7°C
(44°F)		 13°C
(55°F)		 8°C
(47°F)		 4°C
(39°F)		 -3°C
(27°F)		 -15°C
(5°F)		 -24°C
(-11°F)

Compare climate in Delta with other places

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

Monthly average precipitation in Delta, Ohio, United States §

Delta usually has the most precipitation in May, June and July, with an average of 13 rainy days and 120 mm (4.7 inches) of precipitation per month.The driest months in Delta are January, September and December. On average, 61 mm (2.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Delta, Ohio, 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) 70 (2.8) 72 (2.8) 86 (3.4) 95 (3.7) 144 (5.7) 107 (4.2) 109 (4.3) 89 (3.5) 58 (2.3) 92 (3.6) 82 (3.2) 56 (2.2)
Average precipitation days (≥ 1 mm) 9 11 11 13 15 13 11 10 8 12 9 10

Monthly sunshine hours in Delta, Ohio, United States §

The sunniest months in Delta are June, July and August, when the sun shines an average of 11 hours 6 minutes a day.Least sunny months in Delta: January, February and December receive an average of 4 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Delta, Ohio, 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 110 167 237 236 281 329 360 332 287 227 173 149
Mean daily daylight hours 9h 33m 10h 37m 11h 58m 13h 21m 14h 31m 15h 6m 14h 47m 13h 44m 12h 25m 11h 2m 9h 50m 9h 13m

Solar UV radiation in Delta, Ohio, United States §

Delta experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 10 - 10, which corresponds to the Very High category of sun exposure.January, November and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 4. For more detailed information, check out our hourly Delta UV Index data.

Average daily maximum UV levels by month for Delta, Ohio, 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 5 6 9 10 10 10 9 8 6 4 2