Zip 21155 (Upperco, MD) 

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Weather in Zip 21155 (Upperco, MD)

The most pleasant months of the year for the 21155 zip code are September, May and June. In the 21155 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 21155 zip code with an average high temperature of 86.3°, which ranks it as cooler than most places in Maryland. February is the snowiest month in the 21155 zip code with 9.3 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 - Upperco, MD

4 PM PST

Partly Cloudy

72°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TonightPartly Cloudy49° / 73°E 3 to 7 mph
Sunday NightSlight Chance Rain Showers55° / 77°E 7 mph
Monday NightChance Showers And Thunderstorms55° / 72°E 13 mph
Tuesday NightChance Rain Showers53° / 76°E 7 to 12 mph
Wednesday NightSlight Chance Rain Showers then Partly Cloudy57° / 87°SW 7 mph
Thursday NightMostly Clear61° / 90°W 7 mph
Friday NightPartly Cloudy61° / 85°N 9 mph

Weather Highlights

Summer High: the July high is around 86 degrees
Winter Low: the January low is 21
Rain: averages 43 inches of rain a year
Snow: averages 27 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the Upperco (zip 21155) area is 8.6 (10=best), which means it is more comfortable than most places in Maryland.

8.6 / 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
January39° 21°
February43° 23°
March52° 30°
April64° 39°
May74° 49°
June82° 59°
July86° 63°
August85° 61°
September77° 54°
October66° 43°
November55° 34°
December43° 25°
Hot, Freezing, Rainy, Snowy Days: Upperco
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January027104
February02393
March018112
April06120
May10130
June40110
July80110
August5090
September1090
October0380
November01390
December024102

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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Upperco (zip 21155)

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