Zip 21009 (Bel Air South, MD) Weather


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The most pleasant months of the year for the 21009 zip code are September, May and June. In the 21009 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 21009 zip code with an average high temperature of 88.3°, which ranks it as warmer than most places in Maryland. February is the snowiest month in the 21009 zip code with 8.1 inches of snow, and 4 months of the year have significant snowfall. August is the most humid month, though humidity is low for most of the year.

Today's Weather - Bel Air South, MD

9 PM PST

Scattered Rain Showers

54°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
OvernightScattered Rain Showers51° / 68°SW 6 mph
Saturday NightMostly Clear38° / 59°NW 5 to 16 mph
Sunday NightPartly Cloudy39° / 64°NW 6 to 9 mph
Monday NightClear41° / 67°N 7 mph
Tuesday NightMostly Cloudy then Slight Chance Rain Showers51° / 68°S 14 to 17 mph
Wednesday NightChance Rain Showers39° / 62°NW 14 to 18 mph
Thursday NightMostly Clear39° / 65°NW 9 to 13 mph

Weather Highlights

Summer High: the July high is around 88 degrees
Winter Low: the January low is 25
Rain: averages 47 inches of rain a year
Snow: averages 18 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Bel Air South (zip 21009) area is 7.8 (10=best), which means it is more comfortable than most places in Maryland.

7.8 / 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
January42° 25°
February46° 26°
March54° 33°
April66° 43°
May75° 53°
June84° 63°
July88° 68°
August87° 66°
September80° 58°
October68° 46°
November57° 37°
December46° 29°
Hot, Freezing, Rainy, Snowy Days: Bel Air South
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January024103
February021102
March014111
April03120
May10120
June60100
July120110
August9090
September2090
October0190
November09100
December020111

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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