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Monthly climate in Napoleon, Ohio, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Napoleon features a humid continental climate (Dfb).Temperatures typically range between -2 °C (28 °F) and 24 °C (76 °F) through the year, but rarely can drop to -27 °C (-16 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 1047 mm (41.2 inches) and receives 130 rainy days on the 1 mm (0.04 inches) threshold annually.Napoleon enjoys an average of 2853 hours of sunshine throughout the year, and daylight varies from 9 hours 12 minutes to 15 hours 7 minutes per day.

Monthly average temperatures in Napoleon, Ohio, United States §

The warmest months in Napoleon 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 (28 - 34 °F) throughout the day. On average each year, Napoleon experiences 87 days above 25 °C (77.0 °F) and 102 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Napoleon, 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
(94°F)		 35°C
(95°F)		 35°C
(95°F)		 35°C
(95°F)		 34°C
(94°F)		 32°C
(90°F)		 26°C
(79°F)		 17°C
(62°F)
Mean maximum 13°C
(56°F)		 16°C
(61°F)		 21°C
(70°F)		 27°C
(80°F)		 32°C
(90°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(90°F)		 32°C
(91°F)		 29°C
(85°F)		 19°C
(66°F)		 15°C
(60°F)
Average high 1°C
(35°F)		 3°C
(38°F)		 9°C
(49°F)		 15°C
(59°F)		 22°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
(28°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
(22°F)		 -1°C
(31°F)		 4°C
(40°F)		 11°C
(53°F)		 17°C
(62°F)		 19°C
(67°F)		 18°C
(64°F)		 15°C
(59°F)		 8°C
(47°F)		 1°C
(33°F)		 -3°C
(28°F)
Mean minimum -17°C
(1°F)		 -18°C
(-0°F)		 -9°C
(16°F)		 -5°C
(24°F)		 2°C
(35°F)		 11°C
(52°F)		 14°C
(58°F)		 12°C
(53°F)		 7°C
(45°F)		 -0°C
(32°F)		 -9°C
(16°F)		 -12°C
(11°F)
Minimum -26°C
(-15°F)		 -27°C
(-16°F)		 -13°C
(10°F)		 -7°C
(19°F)		 -2°C
(30°F)		 7°C
(45°F)		 13°C
(55°F)		 8°C
(47°F)		 3°C
(38°F)		 -3°C
(27°F)		 -16°C
(3°F)		 -24°C
(-11°F)

Compare climate in Napoleon with other places

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

Monthly average precipitation in Napoleon, Ohio, United States §

Napoleon usually has the most precipitation in May, June and July, with an average of 13 rainy days and 118 mm (4.6 inches) of precipitation per month.The driest months in Napoleon 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 Napoleon, 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) 69 (2.7) 70 (2.8) 88 (3.5) 93 (3.7) 139 (5.5) 112 (4.4) 103 (4.0) 88 (3.5) 57 (2.2) 90 (3.6) 81 (3.2) 56 (2.2)
Average precipitation days (≥ 1 mm) 9 10 11 12 15 13 13 10 8 11 9 9

Monthly sunshine hours in Napoleon, Ohio, United States §

The sunniest months in Napoleon are June, July and August, when the sun shines an average of 11 hours 1 minutes a day.Least sunny months in Napoleon: January, February and December receive an average of 4 hours 38 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Napoleon, 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 108 165 230 231 277 328 356 330 284 222 170 149
Mean daily daylight hours 9h 32m 10h 36m 11h 58m 13h 21m 14h 32m 15h 7m 14h 47m 13h 45m 12h 25m 11h 2m 9h 49m 9h 12m

Solar UV radiation in Napoleon, Ohio, United States §

Napoleon experiences the highest level of ultraviolet (UV) radiation in April, June and July, when the maximum UV index can reach values of 9 - 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 Napoleon UV Index data.

Average daily maximum UV levels by month for Napoleon, 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 9 10 10 9 8 6 4 2