nomadseason

Monthly climate in Armstrong, Iowa, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Armstrong features a humid continental climate (Dfa).Temperatures typically range between -8 °C (18 °F) and 24 °C (75 °F) through the year, but rarely can drop to -34 °C (-29 °F) or can rise to as high as 36 °C (97 °F).The average annual precipitation amounts to about 1014 mm (39.9 inches) and receives 107 rainy days on the 1 mm (0.04 inches) threshold annually.Armstrong enjoys an average of 3006 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 Armstrong, Iowa, United States §

The warmest months in Armstrong are June, July and August, with daily mean temperatures ranging from 21 to 24 °C (71 - 75 °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, Armstrong experiences 80 days above 25 °C (77.0 °F) and 136 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Armstrong, 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
(50°F)		 19°C
(67°F)		 24°C
(75°F)		 29°C
(84°F)		 35°C
(95°F)		 36°C
(97°F)		 35°C
(95°F)		 35°C
(96°F)		 33°C
(92°F)		 30°C
(87°F)		 25°C
(78°F)		 19°C
(67°F)
Mean maximum 8°C
(47°F)		 9°C
(48°F)		 19°C
(66°F)		 25°C
(78°F)		 32°C
(89°F)		 33°C
(91°F)		 34°C
(93°F)		 32°C
(89°F)		 32°C
(89°F)		 28°C
(83°F)		 18°C
(65°F)		 12°C
(54°F)
Average high -3°C
(26°F)		 -3°C
(26°F)		 6°C
(43°F)		 13°C
(55°F)		 21°C
(70°F)		 28°C
(82°F)		 28°C
(83°F)		 26°C
(80°F)		 24°C
(75°F)		 14°C
(58°F)		 7°C
(44°F)		 1°C
(34°F)
Daily mean -8°C
(18°F)		 -8°C
(18°F)		 1°C
(35°F)		 7°C
(45°F)		 15°C
(60°F)		 22°C
(73°F)		 24°C
(75°F)		 21°C
(71°F)		 19°C
(66°F)		 9°C
(49°F)		 2°C
(35°F)		 -3°C
(26°F)
Average low -12°C
(11°F)		 -13°C
(9°F)		 -3°C
(27°F)		 2°C
(35°F)		 10°C
(51°F)		 17°C
(63°F)		 19°C
(66°F)		 16°C
(62°F)		 13°C
(56°F)		 5°C
(41°F)		 -3°C
(27°F)		 -7°C
(19°F)
Mean minimum -25°C
(-12°F)		 -27°C
(-16°F)		 -15°C
(5°F)		 -8°C
(18°F)		 3°C
(37°F)		 11°C
(51°F)		 13°C
(55°F)		 11°C
(51°F)		 6°C
(42°F)		 -4°C
(24°F)		 -13°C
(9°F)		 -20°C
(-3°F)
Minimum -34°C
(-28°F)		 -34°C
(-29°F)		 -26°C
(-14°F)		 -15°C
(6°F)		 1°C
(33°F)		 8°C
(46°F)		 12°C
(54°F)		 10°C
(50°F)		 3°C
(38°F)		 -10°C
(14°F)		 -17°C
(2°F)		 -24°C
(-11°F)

Compare climate in Armstrong with other places

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

Monthly average precipitation in Armstrong, Iowa, United States §

Armstrong usually has the most precipitation in May, June and August, with an average of 12 rainy days and 127 mm (5.0 inches) of precipitation per month.The driest months in Armstrong are January, February and November. On average, 36 mm (1.4 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Armstrong, 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) 34 (1.3) 41 (1.6) 73 (2.9) 94 (3.7) 148 (5.8) 119 (4.7) 110 (4.3) 113 (4.4) 111 (4.4) 94 (3.7) 34 (1.3) 43 (1.7)
Average precipitation days (≥ 1 mm) 5 7 9 10 14 12 10 10 9 10 6 5

Monthly sunshine hours in Armstrong, Iowa, United States §

The sunniest months in Armstrong are June, July and August, when the sun shines an average of 11 hours 16 minutes a day.Least sunny months in Armstrong: January, November and December receive an average of 5 hours 50 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Armstrong, 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 142 202 231 243 278 342 366 329 257 218 198 197
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 Armstrong, Iowa, United States §

Armstrong experiences the highest level of ultraviolet (UV) radiation in June, July and August, 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 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 Armstrong UV Index data.

Average daily maximum UV levels by month for Armstrong, 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 5 8 9 10 10 9 8 5 3 3