St. Johns County, FL Weather


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United States / Florida / Jacksonville / St. Johns County / Cities / Zip Codes

The most pleasant months of the year for St. Johns County are April, October and November. In St. Johns County, there are 5 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for St. Johns County with an average high temperature of 90.6°, which ranks it as about average compared to other places in Florida. Any measurable snowfall is a rare occurance in St. Johns County. The humidity here has been described as stifling in August and July.

Today's Weather - St. Johns, FL

11 PM PST

Mostly Clear

60°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
OvernightMostly Clear57° / 84°SW 6 mph
Thursday NightPartly Cloudy61° / 82°SE 3 to 12 mph
Friday NightPartly Cloudy67° / 81°E 9 to 13 mph
Saturday NightMostly Cloudy66° / 80°E 9 to 14 mph
Sunday NightPartly Cloudy64° / 82°E 8 to 15 mph
Monday NightMostly Clear63° / 84°SE 6 to 13 mph
Tuesday NightMostly Clear63° / 86°SE 6 to 12 mph

Weather Highlights

Summer High: the July high is around 91 degrees
Winter Low: the January low is 45
Rain: averages 51 inches of rain a year
Snow: averages 0 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the St. Johns County area is 3.8 (10=best), which means it is less comfortable than most places in Florida.

3.8 / 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
January66° 45°
February69° 48°
March73° 53°
April79° 57°
May85° 65°
June89° 71°
July91° 73°
August90° 73°
September87° 71°
October81° 64°
November74° 56°
December68° 48°
Hot, Freezing, Rainy, Snowy Days: St. Johns
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January0390
February0180
March0080
April1060
May5070
June120130
July180130
August140150
September60130
October10100
November0080
December0280

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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