For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Polar vortex to deliver more waves of bitterly cold air to the US. See the forecast.

Mercersburg, PA

29°F

Location

Location News Videos

Use Current Location

Recent

Mercersburg

Pennsylvania

No results found.

Try searching for a city, zip code or point of interest.

settings

Mercersburg, PA Weather

Today WinterCast Local {stormName} Tracker Hourly Daily Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Hourly

Daily Radar MinuteCast® Monthly Air Quality Health & Activities

11 AM

29°

RealFeel® 21°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Mostly cloudy

RealFeel Shade™18°

WindNNE 10 mph

Air QualityExcellent

Max UV Index1.5 (Low)

Wind Gusts16 mph

Humidity46%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover75%

Visibility10 mi

Cloud Ceiling21900 ft

12 PM

29°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

RealFeel Shade™20°

WindNNE 10 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts17 mph

Humidity41%

Indoor Humidity23% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17900 ft

1 PM

29°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

RealFeel Shade™20°

WindNNE 10 mph

Air QualityExcellent

Max UV Index0.8 (Low)

Wind Gusts18 mph

Humidity39%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17800 ft

2 PM

30°

RealFeel® 22°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

RealFeel Shade™22°

WindNNE 10 mph

Air QualityExcellent

Max UV Index0.7 (Low)

Wind Gusts17 mph

Humidity36%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling17700 ft

3 PM

28°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

RealFeel Shade™20°

WindNNE 9 mph

Air QualityExcellent

Max UV Index0.4 (Low)

Wind Gusts17 mph

Humidity37%

Indoor Humidity20% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17700 ft

4 PM

28°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

RealFeel Shade™20°

WindNE 8 mph

Air QualityExcellent

Max UV Index0.2 (Low)

Wind Gusts16 mph

Humidity38%

Indoor Humidity20% (Very Dry)

Dew Point5° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17700 ft

5 PM

27°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNE 8 mph

Air QualityExcellent

Wind Gusts14 mph

Humidity40%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling17700 ft

6 PM

26°

RealFeel® 20°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNE 7 mph

Air QualityExcellent

Wind Gusts12 mph

Humidity42%

Indoor Humidity21% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling17700 ft

7 PM

29°

RealFeel® 24°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNNE 7 mph

Air QualityExcellent

Wind Gusts9 mph

Humidity40%

Indoor Humidity22% (Very Dry)

Dew Point8° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling17800 ft

8 PM

28°

RealFeel® 23°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNNE 7 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity41%

Indoor Humidity22% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17800 ft

9 PM

27°

RealFeel® 23°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNNE 7 mph

Air QualityExcellent

Wind Gusts8 mph

Humidity42%

Indoor Humidity21% (Very Dry)

Dew Point7° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17800 ft

10 PM

27°

RealFeel® 23°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Cloudy

WindNNE 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity41%

Indoor Humidity21% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling17800 ft

11 PM

26°

RealFeel® 22°

Very Cold

RealFeel Guide

Very Cold

10° to 24°

Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.

0%

Mostly cloudy

WindNNE 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity43%

Indoor Humidity20% (Very Dry)

Dew Point6° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling21800 ft

Further Ahead

Tomorrow

Wednesday

Daily

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Atmospheric rivers to flow into Pacific Northwest over upcoming weeks

1 hour ago

Winter Weather

Storm’s arrival brings accumulating snow, treacherous travel to Virgin...

51 minutes ago

Weather News

Massive 7.6 earthquake near Japan coast triggers tsunami warnings

17 minutes ago

Winter Weather

Polar vortex shift to bring more brutal cold across the US through mid...

4 hours ago

Featured Stories

Recreation

Free National Park days in 2026 include July 4th weekend

3 days ago

Weather News

Daring rescue saves truck driver after plunging off West Virginia over...

4 days ago

Weather News

Scientists document over 16,000 footprints in dinosaur tracksite

2 days ago

Astronomy

International Space Station parking full for first time in 25 years

5 days ago

Weather News

Police release 911 calls from deadly Texas floods

3 days ago

World North America United States Pennsylvania Mercersburg

Weather Near Mercersburg:

Harrisburg, PA
Lancaster, PA
York, PA

Company

Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us

Products & Services

For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations

Apps & Downloads

iPhone App Android App See all Apps & Downloads

Subscription Services

AccuWeather Premium AccuWeather Professional

More

AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center

Company

Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us

Products & Services

For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ Personal Weather Stations

Apps & Downloads

iPhone App Android App See all Apps & Downloads

Subscription Services

AccuWeather Premium AccuWeather Professional

More

AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center

© 2025 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.

Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...