Mercersburg, PA

Hourly

12 AM

63° RealFeel® 59° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 78% Thunderstorms

• Wind: S 8 mph
• Air Quality: Fair
• Wind Gusts: 16 mph
• Humidity: 94%
• Indoor Humidity: 80% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Rain: 0.03 in
• Visibility: 4 mi
• Cloud Ceiling: 2000 ft

1 AM

63° RealFeel® 60° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 71% Thunderstorms

• Wind: S 8 mph
• Air Quality: Fair
• Wind Gusts: 17 mph
• Humidity: 96%
• Indoor Humidity: 80% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 10100 ft

2 AM

62° RealFeel® 61° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 40% Cloudy

• Wind: S 7 mph
• Air Quality: Fair
• Wind Gusts: 17 mph
• Humidity: 97%
• Indoor Humidity: 80% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 1800 ft

3 AM

62° RealFeel® 61° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 34% Cloudy

• Wind: S 7 mph
• Air Quality: Fair
• Wind Gusts: 17 mph
• Humidity: 99%
• Indoor Humidity: 80% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 99%
• Visibility: 10 mi
• Cloud Ceiling: 1800 ft

4 AM

62° RealFeel® 60° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 40% Cloudy

• Wind: SSW 7 mph
• Air Quality: Fair
• Wind Gusts: 17 mph
• Humidity: 100%
• Indoor Humidity: 80% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 99%
• Visibility: 10 mi
• Cloud Ceiling: 1700 ft

5 AM

62° RealFeel® 58° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 63% Thunderstorms

• Wind: SSW 7 mph
• Air Quality: Fair
• Wind Gusts: 16 mph
• Humidity: 100%
• Indoor Humidity: 81% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Rain: 0.08 in
• Visibility: 5 mi
• Cloud Ceiling: 4000 ft

6 AM

63° RealFeel® 59° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 63% Thunderstorms

• Wind: SSW 7 mph
• Air Quality: Fair
• Wind Gusts: 16 mph
• Humidity: 99%
• Indoor Humidity: 82% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Rain: 0.08 in
• Visibility: 5 mi
• Cloud Ceiling: 2000 ft

7 AM

63° RealFeel® 62° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 49% Cloudy

• RealFeel Shade™: 62°
• Wind: SSW 7 mph
• Air Quality: Fair
• Max UV Index: 0 Low
• Wind Gusts: 16 mph
• Humidity: 98%
• Indoor Humidity: 82% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 100%
• Visibility: 10 mi
• Cloud Ceiling: 1700 ft

8 AM

64° RealFeel® 61° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 49% Cloudy

• RealFeel Shade™: 61°
• Wind: SW 13 mph
• Air Quality: Fair
• Max UV Index: 1 Low
• Wind Gusts: 23 mph
• Humidity: 96%
• Indoor Humidity: 83% (Humid)
• Dew Point: 63° F
• Cloud Cover: 90%
• Visibility: 10 mi
• Cloud Ceiling: 1700 ft

9 AM

65° RealFeel® 60° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 62% Thunderstorms

• RealFeel Shade™: 60°
• Wind: SW 13 mph
• Air Quality: Fair
• Max UV Index: 1 Low
• Wind Gusts: 24 mph
• Humidity: 92%
• Indoor Humidity: 83% (Humid)
• Dew Point: 63° F
• Cloud Cover: 75%
• Rain: 0.05 in
• Visibility: 5 mi
• Cloud Ceiling: 4000 ft

10 AM

67° RealFeel® 63° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 62% Mostly cloudy w/ t-storms

• RealFeel Shade™: 61°
• Wind: WSW 13 mph
• Air Quality: Fair
• Max UV Index: 2 Low
• Wind Gusts: 24 mph
• Humidity: 88%
• Indoor Humidity: 85% (Humid)
• Dew Point: 63° F
• Cloud Cover: 70%
• Rain: 0.05 in
• Visibility: 5 mi
• Cloud Ceiling: 4000 ft

11 AM

68° RealFeel® 69° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 40% Intermittent clouds

• RealFeel Shade™: 65°
• Wind: WSW 14 mph
• Air Quality: Fair
• Max UV Index: 3 Moderate
• Wind Gusts: 27 mph
• Humidity: 84%
• Indoor Humidity: 84% (Humid)
• Dew Point: 63° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 7000 ft

12 PM

70° RealFeel® 73° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 34% Intermittent clouds

• RealFeel Shade™: 67°
• Wind: W 16 mph
• Air Quality: Fair
• Max UV Index: 7 High
• Wind Gusts: 29 mph
• Humidity: 77%
• Indoor Humidity: 77% (Humid)
• Dew Point: 63° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

1 PM

72° RealFeel® 74° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 40% Intermittent clouds

• RealFeel Shade™: 68°
• Wind: WNW 17 mph
• Air Quality: Fair
• Max UV Index: 7 High
• Wind Gusts: 33 mph
• Humidity: 69%
• Indoor Humidity: 69% (Slightly Humid)
• Dew Point: 62° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

2 PM

74° RealFeel® 71° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 51% Mostly cloudy w/ showers

• RealFeel Shade™: 68°
• Wind: WNW 14 mph
• Air Quality: Fair
• Max UV Index: 3 Moderate
• Wind Gusts: 29 mph
• Humidity: 61%
• Indoor Humidity: 61% (Slightly Humid)
• Dew Point: 60° F
• Cloud Cover: 70%
• Rain: 0.02 in
• Visibility: 6 mi
• Cloud Ceiling: 4000 ft

3 PM

72° RealFeel® 73° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 47% Intermittent clouds

• RealFeel Shade™: 68°
• Wind: WNW 15 mph
• Air Quality: Fair
• Max UV Index: 5 Moderate
• Wind Gusts: 31 mph
• Humidity: 60%
• Indoor Humidity: 60% (Slightly Humid)
• Dew Point: 57° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

4 PM

69° RealFeel® 69° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 40% Intermittent clouds

• RealFeel Shade™: 65°
• Wind: WNW 17 mph
• Air Quality: Fair
• Max UV Index: 4 Moderate
• Wind Gusts: 33 mph
• Humidity: 58%
• Indoor Humidity: 58% (Ideal Humidity)
• Dew Point: 54° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

5 PM

67° RealFeel® 65° Pleasant RealFeel Guide Pleasant 63° to 81° Most consider this temperature range ideal. LEARN MORE 34% Intermittent clouds

• RealFeel Shade™: 63°
• Wind: WNW 17 mph
• Air Quality: Fair
• Max UV Index: 2 Low
• Wind Gusts: 36 mph
• Humidity: 56%
• Indoor Humidity: 55% (Ideal Humidity)
• Dew Point: 51° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

6 PM

65° RealFeel® 61° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 34% Intermittent clouds

• RealFeel Shade™: 60°
• Wind: WNW 17 mph
• Air Quality: Fair
• Max UV Index: 1 Low
• Wind Gusts: 35 mph
• Humidity: 54%
• Indoor Humidity: 48% (Ideal Humidity)
• Dew Point: 48° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

7 PM

62° RealFeel® 56° Cool RealFeel Guide Cool 53° to 62° Light jacket or sweater may be appropriate. LEARN MORE 22% Intermittent clouds

• RealFeel Shade™: 56°
• Wind: WNW 16 mph
• Air Quality: Fair
• Max UV Index: 1 Low
• Wind Gusts: 33 mph
• Humidity: 53%
• Indoor Humidity: 42% (Ideal Humidity)
• Dew Point: 44° F
• Cloud Cover: 70%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

8 PM

59° RealFeel® 52° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly sunny

• RealFeel Shade™: 52°
• Wind: WNW 16 mph
• Air Quality: Fair
• Max UV Index: 0 Low
• Wind Gusts: 33 mph
• Humidity: 53%
• Indoor Humidity: 38% (Ideal Humidity)
• Dew Point: 42° F
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

9 PM

56° RealFeel® 49° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly clear

• Wind: NW 15 mph
• Air Quality: Fair
• Wind Gusts: 32 mph
• Humidity: 56%
• Indoor Humidity: 37% (Ideal Humidity)
• Dew Point: 41° F
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

10 PM

54° RealFeel® 46° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly clear

• Wind: NW 15 mph
• Air Quality: Fair
• Wind Gusts: 31 mph
• Humidity: 59%
• Indoor Humidity: 36% (Slightly Dry)
• Dew Point: 40° F
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft

11 PM

52° RealFeel® 45° Chilly RealFeel Guide Chilly 40° to 52° Jacket or sweater is recommended. LEARN MORE 0% Mostly clear

• Wind: NW 15 mph
• Air Quality: Fair
• Wind Gusts: 30 mph
• Humidity: 61%
• Indoor Humidity: 35% (Slightly Dry)
• Dew Point: 39° F
• Cloud Cover: 10%
• Visibility: 10 mi
• Cloud Ceiling: 30000 ft