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Monthly climate in Erwin, Tennessee, United States

Last updated: March 2, 2024

Under the Köppen–Geiger climate classification Erwin features a humid subtropical climate (Cfa). Temperatures typically range between 4 °C (39 °F) and 24 °C (75 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 34 °C (93 °F). The average annual precipitation amounts to about 1334 mm (52.5 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. Erwin enjoys an average of 3082 hours of sunshine throughout the year, and daylight varies from 9 hours 43 minutes to 14 hours 34 minutes per day.

Monthly average temperatures in Erwin, Tennessee, United States §

The warmest months in Erwin are June, July and August, with daily mean temperatures ranging from 22 to 24 °C (71 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 7 °C (39 - 44 °F) throughout the day. On average each year, Erwin experiences 110 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 Erwin, Tennessee, 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 24°C
(76°F)		 27°C
(80°F)		 28°C
(82°F)		 31°C
(87°F)		 31°C
(89°F)		 32°C
(90°F)		 34°C
(93°F)		 32°C
(90°F)		 33°C
(92°F)		 33°C
(91°F)		 24°C
(76°F)		 21°C
(71°F)
Mean maximum 20°C
(68°F)		 23°C
(74°F)		 25°C
(77°F)		 27°C
(82°F)		 29°C
(85°F)		 31°C
(87°F)		 33°C
(91°F)		 31°C
(89°F)		 31°C
(87°F)		 29°C
(85°F)		 24°C
(75°F)		 19°C
(67°F)
Average high 8°C
(47°F)		 12°C
(54°F)		 15°C
(60°F)		 19°C
(67°F)		 24°C
(75°F)		 27°C
(80°F)		 29°C
(85°F)		 28°C
(83°F)		 26°C
(80°F)		 21°C
(71°F)		 14°C
(57°F)		 11°C
(51°F)
Daily mean 4°C
(39°F)		 7°C
(44°F)		 9°C
(49°F)		 13°C
(56°F)		 18°C
(65°F)		 22°C
(71°F)		 24°C
(75°F)		 23°C
(73°F)		 21°C
(70°F)		 16°C
(60°F)		 8°C
(46°F)		 6°C
(42°F)
Average low -0°C
(31°F)		 2°C
(36°F)		 4°C
(40°F)		 8°C
(46°F)		 13°C
(56°F)		 17°C
(62°F)		 19°C
(67°F)		 18°C
(66°F)		 16°C
(61°F)		 10°C
(51°F)		 2°C
(36°F)		 1°C
(34°F)
Mean minimum -12°C
(10°F)		 -7°C
(19°F)		 -7°C
(20°F)		 -2°C
(28°F)		 4°C
(39°F)		 11°C
(52°F)		 15°C
(59°F)		 14°C
(57°F)		 10°C
(50°F)		 1°C
(33°F)		 -6°C
(21°F)		 -8°C
(18°F)
Minimum -18°C
(0°F)		 -10°C
(14°F)		 -14°C
(7°F)		 -5°C
(24°F)		 -0°C
(32°F)		 7°C
(45°F)		 13°C
(56°F)		 12°C
(53°F)		 6°C
(43°F)		 -2°C
(29°F)		 -14°C
(7°F)		 -11°C
(13°F)

Compare climate in Erwin with other places

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

Monthly average precipitation in Erwin, Tennessee, United States §

Erwin usually has the most precipitation in February, April and December, with an average of 13 rainy days and 135 mm (5.3 inches) of precipitation per month. The driest months in Erwin are July, September and November. On average, 84 mm (3.3 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Erwin, Tennessee, 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) 97 (3.8) 143 (5.6) 128 (5.1) 133 (5.2) 120 (4.7) 111 (4.4) 84 (3.3) 105 (4.1) 85 (3.4) 116 (4.5) 81 (3.2) 130 (5.1)
Average precipitation days (≥ 1 mm) 13 14 14 12 14 15 13 13 9 10 11 13

Monthly sunshine hours in Erwin, Tennessee, United States §

The sunniest months in Erwin are June, July and August, when the sun shines an average of 10 hours 42 minutes a day. Least sunny months in Erwin: January, February and December receive an average of 5 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Erwin, Tennessee, 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 148 171 239 264 308 316 347 322 288 268 232 175
Mean daily daylight hours 9h 59m 10h 52m 11h 59m 13h 8m 14h 6m 14h 34m 14h 18m 13h 27m 12h 21m 11h 12m 10h 13m 9h 43m

Solar UV radiation in Erwin, Tennessee, United States §

Erwin experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 11 - 11, 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 Erwin UV Index data.

Average daily maximum UV levels by month for Erwin, Tennessee, 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 11 11 10 10 8 5 3

Detailed Monthly Weather Insights for Erwin, Tennessee, United States

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