June weather forecastMercersburg, PA
June
Weather in June
June, the first month of the summer in Mercersburg, is a moderately hot month, with an average temperature ranging between max 79.5°F (26.4°C) and min 57.9°F (14.4°C).Temperature
Mercersburg's transition into June is marked by a minor temperature shift, moving from an agreeable 71.2°F (21.8°C) in May to a moderately hot 79.5°F (26.4°C). An average nighttime temperature of 57.9°F (14.4°C) is recorded during June.Humidity
In June, the average relative humidity in Mercersburg is 76%.Rainfall
In June, the rain falls for 16.5 days. Throughout June, 2.6" (66mm) of precipitation is accumulated. In Mercersburg, during the entire year, the rain falls for 170.5 days and collects up to 31.02" (788mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The month with the longest days in Mercersburg is June, with an average of 14h and 54min of daylight.On the first day of the month, sunrise is at 5:44 am and sunset at 8:34 pm. On the last day of June, sunrise is at 5:46 am and sunset at 8:43 pm EDT.
Sunshine
In June, the average sunshine in Mercersburg is 10h.UV index
The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In June, the UV index of 6 transforms into the following advice:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Stay out of direct sunlight between 10 a.m. and 4 p.m., when UV radiation is most intense, and remember that not all shade structures provide complete protection. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Mercersburg, PA
- Average high temperature in June: 79.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (35.2°F).
- Average low temperature in June: 57.9°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure in June
Mercersburg, PA
- Average pressure in June: 29.95"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in June
Mercersburg, PA
- Average wind speed in June: 5.3mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in June
Mercersburg, PA
- Average humidity in June: 76%
The months with the highest relative humidity are February, May, October and December (79%).
The months with the lowest relative humidity are April and July (75%).
Average rainfall in June
Mercersburg, PA
- Average rainfall in June: 2.6"
The wettest month (with the highest rainfall) is May (3.19").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in June
Mercersburg, PA
- Average rainfall days in June: 16.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (9.9 days).
Average snowfall in June
Mercersburg, PA
- Average snowfall in June: 0"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in June
Mercersburg, PA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (9.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Mercersburg, PA
- Average daylight in June: 14h and 54min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in June: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in June
Mercersburg, PA
- Average sunshine days in June: 11.3 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is May (10.3 days).
Average UV index in June
Mercersburg, PA
- Average UV index in June: 6
The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in June
Mercersburg, PA
- Average cloud cover in June: 35
The months with the most cloud cover are January, February and December (Cloud cover 50).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in June
Mercersburg, PA
- Average visibility in June: 6mi
The months with the highest visibility are April, June, July and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September, October and December (5mi).
