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Monthly climate in Blairstown, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Blairstown features a humid continental climate (Dfa).Temperatures typically range between -6 °C (21 °F) and 24 °C (76 °F) through the year, but rarely can drop to -33 °C (-27 °F) or can rise to as high as 35 °C (96 °F).The average annual precipitation amounts to about 1072 mm (42.2 inches) and receives 110 rainy days on the 1 mm (0.04 inches) threshold annually.Blairstown enjoys an average of 2973 hours of sunshine throughout the year, and daylight varies from 9 hours 10 minutes to 15 hours 9 minutes per day.

Monthly average temperatures in Blairstown, Iowa, United States §

The warmest months in Blairstown 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 -6 to -1 °C (21 - 30 °F) throughout the day. On average each year, Blairstown experiences 89 days above 25 °C (77.0 °F) and 122 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Blairstown, 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 12°C
(55°F)		 22°C
(71°F)		 23°C
(73°F)		 28°C
(84°F)		 34°C
(94°F)		 35°C
(96°F)		 35°C
(95°F)		 34°C
(94°F)		 34°C
(93°F)		 31°C
(88°F)		 23°C
(75°F)		 22°C
(73°F)
Mean maximum 9°C
(49°F)		 14°C
(57°F)		 20°C
(68°F)		 26°C
(79°F)		 32°C
(90°F)		 33°C
(92°F)		 33°C
(92°F)		 32°C
(90°F)		 32°C
(90°F)		 30°C
(86°F)		 18°C
(65°F)		 16°C
(61°F)
Average high -2°C
(29°F)		 -0°C
(31°F)		 8°C
(47°F)		 14°C
(58°F)		 21°C
(71°F)		 28°C
(82°F)		 29°C
(84°F)		 27°C
(82°F)		 25°C
(78°F)		 16°C
(62°F)		 8°C
(47°F)		 4°C
(39°F)
Daily mean -6°C
(21°F)		 -5°C
(23°F)		 3°C
(38°F)		 9°C
(48°F)		 16°C
(62°F)		 23°C
(73°F)		 24°C
(76°F)		 22°C
(72°F)		 19°C
(67°F)		 11°C
(52°F)		 3°C
(38°F)		 -1°C
(30°F)
Average low -10°C
(14°F)		 -10°C
(14°F)		 -1°C
(30°F)		 3°C
(38°F)		 11°C
(53°F)		 17°C
(64°F)		 19°C
(67°F)		 17°C
(63°F)		 14°C
(57°F)		 7°C
(44°F)		 -2°C
(29°F)		 -5°C
(23°F)
Mean minimum -25°C
(-12°F)		 -24°C
(-10°F)		 -14°C
(7°F)		 -6°C
(22°F)		 3°C
(37°F)		 12°C
(53°F)		 14°C
(58°F)		 12°C
(53°F)		 7°C
(44°F)		 -3°C
(26°F)		 -11°C
(12°F)		 -16°C
(4°F)
Minimum -32°C
(-25°F)		 -33°C
(-27°F)		 -23°C
(-9°F)		 -11°C
(13°F)		 -0°C
(32°F)		 9°C
(49°F)		 12°C
(53°F)		 10°C
(51°F)		 3°C
(37°F)		 -5°C
(23°F)		 -17°C
(1°F)		 -22°C
(-8°F)

Compare climate in Blairstown with other places

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

Monthly average precipitation in Blairstown, Iowa, United States §

Blairstown usually has the most precipitation in May, June and October, with an average of 12 rainy days and 149 mm (5.9 inches) of precipitation per month.The driest months in Blairstown are January, November and December. On average, 45 mm (1.8 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Blairstown, 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) 46 (1.8) 54 (2.1) 73 (2.9) 83 (3.3) 163 (6.4) 141 (5.6) 88 (3.5) 70 (2.7) 124 (4.9) 142 (5.6) 46 (1.8) 42 (1.6)
Average precipitation days (≥ 1 mm) 7 8 7 11 15 10 10 9 10 11 7 5

Monthly sunshine hours in Blairstown, Iowa, United States §

The sunniest months in Blairstown are June, July and August, when the sun shines an average of 11 hours 12 minutes a day.Least sunny months in Blairstown: January, February and December receive an average of 5 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Blairstown, 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 133 186 223 247 260 336 367 327 271 217 203 198
Mean daily daylight hours 9h 30m 10h 35m 11h 58m 13h 22m 14h 34m 15h 9m 14h 50m 13h 46m 12h 25m 11h 1m 9h 47m 9h 10m

Solar UV radiation in Blairstown, Iowa, United States §

Blairstown 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 Blairstown UV Index data.

Average daily maximum UV levels by month for Blairstown, 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 6 3 3