Keystone, IA Weather


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The most pleasant months of the year for Keystone are June, September and August. In Keystone, there are 5 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Keystone with an average high temperature of 83.8°, which ranks it as about average compared to other places in Iowa. December is the snowiest month in Keystone with 8.4 inches of snow, and 6 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.

Today's Weather - Keystone, IA

4 AM PST

Showers And Thunderstorms

47°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayShowers And Thunderstorms58° / 55°SE 20 to 25 mph
SaturdayChance Showers And Thunderstorms78° / 60°SW 15 to 20 mph
SundayShowers And Thunderstorms72° / 54°S 10 to 25 mph
MondayChance Showers And Thunderstorms68° / 47°SW 15 to 20 mph
TuesdaySunny then Slight Chance Showers And Thunderstorms77° / 51°S 5 to 15 mph
WednesdayChance Showers And Thunderstorms75° / 49°W 10 to 15 mph
ThursdayChance Showers And Thunderstorms69° / 43°NE 10 to 15 mph

Weather Highlights

Summer High: the July high is around 84 degrees
Winter Low: the January low is 10
Rain: averages 37 inches of rain a year
Snow: averages 31 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Keystone area is 8.9 (10=best), which means it is more comfortable than most places in Iowa.

8.9 / 10

A higher score indicates a more comfortable year-round climate. The US average for the comfort index is 7.8. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.


Average Monthly High and Low (°F)
HighLow
January28° 10°
February33° 14°
March46° 26°
April61° 37°
May71° 48°
June80° 58°
July84° 62°
August82° 60°
September75° 51°
October62° 39°
November47° 27°
December32° 14°
Hot, Freezing, Rainy, Snowy Days: Keystone
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January03065
February02664
March02372
April09101
May01120
June20110
July5090
August4090
September1180
October0880
November02171
December02975

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.

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