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Monthly climate in Sibley, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Sibley features a humid continental climate (Dfa).Temperatures typically range between -8 °C (18 °F) and 23 °C (74 °F) through the year, but rarely can drop to -32 °C (-26 °F) or can rise to as high as 35 °C (95 °F).The average annual precipitation amounts to about 911 mm (35.9 inches) and receives 99 rainy days on the 1 mm (0.04 inches) threshold annually.Sibley enjoys an average of 3017 hours of sunshine throughout the year, and daylight varies from 9 hours 0 minutes to 15 hours 20 minutes per day.

Monthly average temperatures in Sibley, Iowa, United States §

The warmest months in Sibley are June, July and August, with daily mean temperatures ranging from 21 to 23 °C (71 - 74 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -8 to -3 °C (18 - 26 °F) throughout the day. On average each year, Sibley experiences 76 days above 25 °C (77.0 °F) and 143 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sibley, Iowa, 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 10°C
(51°F)		 19°C
(66°F)		 24°C
(76°F)		 28°C
(83°F)		 34°C
(94°F)		 35°C
(95°F)		 35°C
(95°F)		 35°C
(95°F)		 32°C
(91°F)		 30°C
(86°F)		 25°C
(77°F)		 17°C
(62°F)
Mean maximum 8°C
(47°F)		 11°C
(51°F)		 19°C
(67°F)		 25°C
(78°F)		 30°C
(87°F)		 32°C
(90°F)		 33°C
(92°F)		 32°C
(89°F)		 32°C
(89°F)		 28°C
(82°F)		 18°C
(65°F)		 11°C
(52°F)
Average high -3°C
(27°F)		 -3°C
(28°F)		 6°C
(43°F)		 12°C
(55°F)		 20°C
(68°F)		 27°C
(82°F)		 28°C
(83°F)		 26°C
(80°F)		 24°C
(75°F)		 14°C
(57°F)		 6°C
(44°F)		 1°C
(34°F)
Daily mean -7°C
(19°F)		 -8°C
(18°F)		 1°C
(35°F)		 7°C
(44°F)		 15°C
(59°F)		 22°C
(72°F)		 23°C
(74°F)		 21°C
(71°F)		 18°C
(65°F)		 9°C
(48°F)		 1°C
(34°F)		 -3°C
(26°F)
Average low -12°C
(12°F)		 -13°C
(9°F)		 -3°C
(26°F)		 1°C
(34°F)		 10°C
(50°F)		 17°C
(62°F)		 18°C
(65°F)		 16°C
(61°F)		 13°C
(55°F)		 4°C
(39°F)		 -4°C
(26°F)		 -8°C
(18°F)
Mean minimum -24°C
(-11°F)		 -26°C
(-14°F)		 -15°C
(6°F)		 -8°C
(17°F)		 2°C
(35°F)		 10°C
(51°F)		 13°C
(55°F)		 10°C
(51°F)		 5°C
(41°F)		 -6°C
(22°F)		 -14°C
(7°F)		 -19°C
(-1°F)
Minimum -32°C
(-26°F)		 -32°C
(-25°F)		 -27°C
(-16°F)		 -15°C
(5°F)		 0°C
(32°F)		 7°C
(45°F)		 12°C
(53°F)		 8°C
(47°F)		 3°C
(38°F)		 -11°C
(12°F)		 -16°C
(3°F)		 -24°C
(-10°F)

Compare climate in Sibley with other places

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

Monthly average precipitation in Sibley, Iowa, United States §

Sibley usually has the most precipitation in May, June and August, with an average of 11 rainy days and 117 mm (4.6 inches) of precipitation per month.The driest months in Sibley are January, February and November. On average, 29 mm (1.1 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sibley, Iowa, 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) 27 (1.1) 30 (1.2) 66 (2.6) 89 (3.5) 126 (5.0) 119 (4.7) 85 (3.4) 106 (4.2) 106 (4.2) 89 (3.5) 28 (1.1) 40 (1.6)
Average precipitation days (≥ 1 mm) 5 6 8 8 15 10 9 10 9 9 6 4

Monthly sunshine hours in Sibley, Iowa, United States §

The sunniest months in Sibley are June, July and August, when the sun shines an average of 11 hours 17 minutes a day.Least sunny months in Sibley: January, November and December receive an average of 5 hours 58 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sibley, Iowa, 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 145 208 228 242 275 344 363 330 258 217 202 201
Mean daily daylight hours 9h 22m 10h 31m 11h 58m 13h 27m 14h 42m 15h 20m 14h 59m 13h 52m 12h 26m 10h 57m 9h 39m 9h 0m

Solar UV radiation in Sibley, Iowa, United States §

Sibley experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 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 3. For more detailed information, check out our hourly Sibley UV Index data.

Average daily maximum UV levels by month for Sibley, Iowa, 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 8 9 11 10 9 8 5 3 3