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Monthly climate in Seymour, Missouri, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Seymour features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (34 °F) and 26 °C (78 °F) through the year, but rarely can drop to -24 °C (-11 °F) or can rise to as high as 37 °C (99 °F).The average annual precipitation amounts to about 1303 mm (51.3 inches) and receives 123 rainy days on the 1 mm (0.04 inches) threshold annually.Seymour enjoys an average of 3024 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 Seymour, Missouri, United States §

The warmest months in Seymour are June, July and August, with daily mean temperatures ranging from 23 to 26 °C (75 - 78 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 5 °C (34 - 41 °F) throughout the day. On average each year, Seymour experiences 115 days above 25 °C (77.0 °F) and 74 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Seymour, Missouri, 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 21°C
(70°F)		 26°C
(79°F)		 29°C
(85°F)		 30°C
(86°F)		 33°C
(91°F)		 37°C
(99°F)		 37°C
(98°F)		 35°C
(96°F)		 34°C
(93°F)		 31°C
(88°F)		 26°C
(80°F)		 25°C
(77°F)
Mean maximum 17°C
(64°F)		 22°C
(72°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(86°F)		 33°C
(91°F)		 35°C
(95°F)		 34°C
(94°F)		 33°C
(91°F)		 30°C
(87°F)		 23°C
(73°F)		 20°C
(69°F)
Average high 6°C
(43°F)		 8°C
(47°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(74°F)		 29°C
(84°F)		 31°C
(87°F)		 29°C
(85°F)		 28°C
(82°F)		 20°C
(68°F)		 13°C
(56°F)		 10°C
(50°F)
Daily mean 1°C
(34°F)		 3°C
(37°F)		 9°C
(48°F)		 12°C
(55°F)		 18°C
(65°F)		 23°C
(75°F)		 26°C
(78°F)		 24°C
(76°F)		 22°C
(72°F)		 14°C
(58°F)		 7°C
(45°F)		 5°C
(41°F)
Average low -3°C
(27°F)		 -2°C
(28°F)		 4°C
(39°F)		 7°C
(45°F)		 14°C
(57°F)		 19°C
(66°F)		 21°C
(70°F)		 20°C
(67°F)		 17°C
(62°F)		 9°C
(49°F)		 2°C
(36°F)		 0°C
(33°F)
Mean minimum -14°C
(8°F)		 -14°C
(6°F)		 -7°C
(19°F)		 -3°C
(28°F)		 6°C
(43°F)		 14°C
(57°F)		 17°C
(62°F)		 15°C
(59°F)		 9°C
(48°F)		 -1°C
(31°F)		 -7°C
(19°F)		 -9°C
(16°F)
Minimum -19°C
(-3°F)		 -24°C
(-11°F)		 -16°C
(3°F)		 -6°C
(22°F)		 2°C
(36°F)		 11°C
(52°F)		 15°C
(59°F)		 13°C
(56°F)		 7°C
(45°F)		 -4°C
(25°F)		 -13°C
(9°F)		 -14°C
(8°F)

Compare climate in Seymour with other places

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

Monthly average precipitation in Seymour, Missouri, United States §

Seymour usually has the most precipitation in March, April and May, with an average of 13 rainy days and 168 mm (6.6 inches) of precipitation per month.The driest months in Seymour are September, November and December. On average, 64 mm (2.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Seymour, Missouri, 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) 80 (3.1) 94 (3.7) 147 (5.8) 174 (6.9) 183 (7.2) 102 (4.0) 85 (3.3) 109 (4.3) 58 (2.3) 137 (5.4) 72 (2.8) 63 (2.5)
Average precipitation days (≥ 1 mm) 8 10 12 13 15 10 11 12 6 11 8 7

Monthly sunshine hours in Seymour, Missouri, United States §

The sunniest months in Seymour are June, July and August, when the sun shines an average of 10 hours 51 minutes a day.Least sunny months in Seymour: January, February and December receive an average of 5 hours 51 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Seymour, Missouri, 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 143 179 212 244 281 333 346 318 288 242 223 210
Mean daily daylight hours 9h 55m 10h 49m 11h 59m 13h 10m 14h 10m 14h 39m 14h 23m 13h 30m 12h 22m 11h 11m 10h 9m 9h 38m

Solar UV radiation in Seymour, Missouri, United States §

Seymour experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 10 - 11, which corresponds to the Very High / 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 Seymour UV Index data.

Average daily maximum UV levels by month for Seymour, Missouri, 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 7 10 10 11 11 10 9 7 5 3