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Monthly climate in Ironton, Missouri, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Ironton features a humid subtropical climate (Cfa).Temperatures typically range between 1 °C (34 °F) and 26 °C (79 °F) through the year, but rarely can drop to -22 °C (-7 °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 124 rainy days on the 1 mm (0.04 inches) threshold annually.Ironton enjoys an average of 2967 hours of sunshine throughout the year, and daylight varies from 9 hours 35 minutes to 14 hours 42 minutes per day.

Monthly average temperatures in Ironton, Missouri, United States §

The warmest months in Ironton are June, July and August, with daily mean temperatures ranging from 24 to 26 °C (75 - 79 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 4 °C (34 - 40 °F) throughout the day. On average each year, Ironton experiences 115 days above 25 °C (77.0 °F) and 75 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ironton, 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 20°C
(67°F)		 25°C
(78°F)		 28°C
(82°F)		 30°C
(86°F)		 32°C
(89°F)		 34°C
(94°F)		 37°C
(99°F)		 35°C
(95°F)		 35°C
(95°F)		 33°C
(92°F)		 26°C
(80°F)		 25°C
(76°F)
Mean maximum 16°C
(62°F)		 21°C
(71°F)		 25°C
(77°F)		 27°C
(81°F)		 30°C
(86°F)		 32°C
(90°F)		 35°C
(96°F)		 34°C
(94°F)		 33°C
(91°F)		 31°C
(88°F)		 22°C
(73°F)		 20°C
(69°F)
Average high 6°C
(42°F)		 8°C
(47°F)		 14°C
(58°F)		 18°C
(65°F)		 23°C
(74°F)		 29°C
(84°F)		 31°C
(88°F)		 29°C
(84°F)		 28°C
(82°F)		 20°C
(69°F)		 13°C
(55°F)		 10°C
(50°F)
Daily mean 1°C
(34°F)		 3°C
(37°F)		 9°C
(48°F)		 13°C
(55°F)		 19°C
(66°F)		 24°C
(75°F)		 26°C
(79°F)		 24°C
(75°F)		 22°C
(71°F)		 15°C
(59°F)		 7°C
(45°F)		 4°C
(40°F)
Average low -3°C
(27°F)		 -2°C
(29°F)		 4°C
(39°F)		 7°C
(45°F)		 14°C
(58°F)		 19°C
(66°F)		 21°C
(70°F)		 19°C
(67°F)		 16°C
(62°F)		 9°C
(49°F)		 2°C
(35°F)		 -0°C
(32°F)
Mean minimum -13°C
(8°F)		 -14°C
(7°F)		 -7°C
(20°F)		 -1°C
(30°F)		 6°C
(43°F)		 14°C
(57°F)		 17°C
(63°F)		 14°C
(58°F)		 9°C
(48°F)		 -1°C
(30°F)		 -7°C
(20°F)		 -9°C
(15°F)
Minimum -18°C
(-1°F)		 -22°C
(-7°F)		 -15°C
(5°F)		 -4°C
(24°F)		 2°C
(36°F)		 10°C
(51°F)		 15°C
(59°F)		 13°C
(56°F)		 7°C
(46°F)		 -5°C
(24°F)		 -13°C
(10°F)		 -14°C
(7°F)

Compare climate in Ironton with other places

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

Monthly average precipitation in Ironton, Missouri, United States §

Ironton usually has the most precipitation in March, April and May, with an average of 13 rainy days and 161 mm (6.3 inches) of precipitation per month.The driest months in Ironton are September, November and December. On average, 70 mm (2.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ironton, 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) 86 (3.4) 105 (4.1) 144 (5.7) 169 (6.6) 171 (6.7) 94 (3.7) 102 (4.0) 103 (4.1) 61 (2.4) 120 (4.7) 76 (3.0) 73 (2.9)
Average precipitation days (≥ 1 mm) 8 9 13 14 14 11 10 13 7 10 8 7

Monthly sunshine hours in Ironton, Missouri, United States §

The sunniest months in Ironton are June, July and August, when the sun shines an average of 10 hours 49 minutes a day.Least sunny months in Ironton: January, February and December receive an average of 5 hours 29 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ironton, 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 132 175 207 235 285 323 348 323 289 238 216 192
Mean daily daylight hours 9h 53m 10h 48m 11h 59m 13h 11m 14h 12m 14h 42m 14h 26m 13h 31m 12h 22m 11h 10m 10h 7m 9h 35m

Solar UV radiation in Ironton, Missouri, United States §

Ironton 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 Ironton UV Index data.

Average daily maximum UV levels by month for Ironton, 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