Zip 20171 (McNair, VA) Weather


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The most pleasant months of the year for the 20171 zip code are September, June and May. In the 20171 zip code, there are 4 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 20171 zip code with an average high temperature of 85.8°, which ranks it as cooler than most places in Virginia. February is the snowiest month in the 20171 zip code with 7.8 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 - McNair, VA

4 AM PST

Mostly Sunny

58°F

7 DAY FORECASTDESCRIPTIONHIGH/LOWWIND
TodayMostly Sunny77° / 48°NW 6 to 10 mph
FridayCloudy then Chance Rain Showers68° / 51°SE 6 to 9 mph
SaturdayPartly Sunny69° / 43°NW 6 to 14 mph
SundayPartly Sunny61° / 43°NW 9 mph
MondaySunny66° / 44°N 9 mph
TuesdayMostly Sunny71° / 51°S 5 to 14 mph
WednesdayChance Rain Showers68° / 45°W 15 mph

Weather Highlights

Summer High: the July high is around 86 degrees
Winter Low: the January low is 24
Rain: averages 43 inches of rain a year
Snow: averages 22 inches of snow a year


BESTPLACES COMFORT INDEX

The annual BestPlaces Comfort Index for the McNair (zip 20171) area is 8.3 (10=best), which means it is more comfortable than most places in Virginia.

8.3 / 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° 24°
February46° 26°
March54° 32°
April66° 42°
May73° 51°
June82° 61°
July86° 66°
August84° 64°
September78° 56°
October67° 44°
November57° 35°
December45° 27°
Hot, Freezing, Rainy, Snowy Days: McNair
Hot
Days
Freezing
Days
Rainy
Days
Snowy
Days
January025103
February02293
March016101
April04110
May10120
June30110
July70110
August6090
September2090
October0380
November01290
December023102

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.

Reviews for McNair
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Over 15 years ago

We selected our rental neighborhood based almost completely on public school ratings for northern virginia. We are exceptionally pleased with Crossfield Elementary and  More

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