Sullivan County, MO Weather


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United States / Missouri / No Metro Area / Sullivan County / Cities / Zip Codes

The most pleasant months of the year for Sullivan County are September, June and May. In Sullivan County, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for Sullivan County with an average high temperature of 86.3°, which ranks it as one of the coolest places in Missouri. February is the snowiest month in Sullivan County with 4.6 inches of snow, and 5 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 - Sullivan, MO

4 PM PST

Mostly Clear

67°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TonightMostly Clear42° / 64°NNW 7 to 16 mph
Wednesday NightPartly Cloudy45° / 66°E 7 to 10 mph
Thursday NightShowers And Thunderstorms52° / 70°SE 20 to 25 mph
Friday NightShowers And Thunderstorms61° / 79°S 22 to 32 mph
Saturday NightChance Showers And Thunderstorms then Showers And Thunderstorms61° / 73°S 15 to 20 mph
Sunday NightShowers And Thunderstorms Likely then Chance Showers And Thunderstorms49° / 64°SW 14 to 23 mph
Monday NightSlight Chance Rain Showers then Mostly Clear45° / 73°WNW 7 to 15 mph

Weather Highlights

Summer High: the July high is around 86 degrees
Winter Low: the January low is 15
Rain: averages 40 inches of rain a year
Snow: averages 17 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Sullivan County area is 8.5 (10=best), which means it is more comfortable than most places in Missouri.

8.5 / 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
January34° 15°
February39° 19°
March51° 30°
April63° 40°
May73° 51°
June82° 61°
July86° 66°
August85° 64°
September77° 54°
October65° 42°
November51° 30°
December37° 19°
Hot, Freezing, Rainy, Snowy Days: Sullivan
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January02952
February02463
March01981
April06100
May00120
June20100
July90100
August7090
September1080
October0490
November01771
December02873

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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