Contents
- Weather in June
- Frequently asked questions
- Average temperature in June
- Average pressure in June
- Average wind speed in June
- Average humidity in June
- Average rainfall in June
- Average rainfall days in June
- Average snowfall in June
- Average snowfall days in June
- Average daylight in June
- Average sunshine in June
- Average sunshine days in June
- Average UV index in June
- Average cloud cover in June
- Average visibility in June
Weather in June
Temperature
As May gives way to June, the average high-temperature displays a slight ascent, adjusting from a pleasant 71.2°F (21.8°C) to a moderately hot 79.5°F (26.4°C). Nighttime temperature dips to a mean of 57.9°F (14.4°C) during June.Humidity
The average relative humidity in June is 76%.Rainfall
In Mercersburg, during June, the rain falls for 16.5 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 170.5 rainfall days, and 31.02" (788mm) of precipitation is accumulated.Snowfall
May through September are months without snowfall in Mercersburg.Daylight
June has the longest days of the year in Mercersburg, with an average of 14h and 54min of daylight.On the first day of June in Mercersburg, sunrise is at 5:44 am and sunset at 8:34 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:43 pm EDT.
Sunshine
In June, the average sunshine is 10h.UV index
The months with the highest UV index in Mercersburg are May through July, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: In June, the average maximum UV index of 6 translates into the following recommendations:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. Limit your direct sun exposure, especially between 10 a.m. and 4 p.m., when UV radiation is strongest. Shade structures might not provide complete sun protection. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Frequently asked questions
What is the average June temperature in Mercersburg?
What is the average humidity in June in Mercersburg?
How much does it rain in Mercersburg in June?
When it does not snow in Mercersburg?
When are the longest days in Mercersburg?
How many hours of daylight does Mercersburg have in June?
When are sunrise and sunset in June in Mercersburg?
How long on average sun shines in June in Mercersburg?
What is the month with the highest UV index in Mercersburg?
What is the UV index reading in June in Mercersburg?
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 5min
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).
Mercersburg, Pennsylvania, USA
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