Iona, South Dakota Weather

The most pleasant months of the year for Iona are September, June and August. In Iona, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Iona with an average high temperature of 87.4°, which ranks it as warmer than most places in South Dakota. March is the snowiest month in Iona with 8.5 inches of snow, and 7 months of the year have significant snowfall. There are few days during the summer when the humidity becomes unpleasant.

Average Monthly High and Low (°F)

	High	Low
January	33°	11°
February	37°	15°
March	47°	24°
April	59°	35°
May	70°	46°
June	80°	56°
July	87°	62°
August	86°	60°
September	77°	50°
October	62°	37°
November	46°	24°
December	34°	13°

Hot, Freezing, Rainy, Snowy Days: Iona

	Hot Days	Freezing Days	Rainy Days	Snowy Days
January	0	30	3	3
February	0	27	3	3
March	0	25	5	3
April	0	11	8	1
May	1	1	10	0
June	3	0	10	0
July	11	0	8	0
August	10	0	7	0
September	4	1	6	0
October	0	9	6	0
November	0	23	4	2
December	0	30	4	3

YOU SHOULD KNOW

Many people confuse weather and climate but they are different. Weather is the conditions of the atmosphere over a short period of time, and climate is how the atmosphere is over long periods of time.

Weather is how the atmosphere is behaving and its effects upon life and human activities. Weather can change from minute-to-minute. Most people think of weather in terms of temperature, humidity, precipitation, cloudiness, brightness, visibility, wind, and atmospheric pressure.

Climate is the description of the long-term pattern of weather in a place. Climate can mean the average weather for a particular region and time period taken over 30 years. Climate is the average of weather over time.