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
Herndon in June observes a minor temperature shift, with average high-temperatures adjusting from a pleasant 69.4°F (20.8°C) in May to a warm 77°F (25°C). During the month of June, Herndon experiences a steady low-temperature average of 56.5°F (13.6°C).Humidity
The average relative humidity in June in Herndon, Pennsylvania, is 79%.Rainfall
In Herndon, in June, during 15.7 rainfall days, 2.64" (67mm) of precipitation is typically accumulated. Throughout the year, there are 165.3 rainfall days, and 30.55" (776mm) of precipitation is accumulated.Snowfall
In Herndon, snow does not fall in June through September.Daylight
June has the longest days of the year in Herndon, with an average of 15h and 0min of daylight.On the first day of June, sunrise is at 5:38 am and sunset at 8:32 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:42 pm EDT.
Sunshine
In June, the average sunshine in Herndon is 10h.UV index
June and July, with an average maximum UV index of 6, are months with the highest UV index in Herndon. A UV Index of 6 to 7 symbolizes a high threat to health from exposure to the Sun's UV radiation for average individuals.Note: During June, 6 as the daily maximum UV index converts into the following advice:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Frequently asked questions
What are June temperatures in Herndon?
What is the average humidity in June in Herndon?
How much does it rain in Herndon in June?
When it does not snow in Herndon?
Does it snow in Herndon in June?
When are the longest days in Herndon?
What is the average length of the day in June in Herndon?
When are sunrise and sunset in June in Herndon?
How many hours of sunshine does Herndon have in June?
What are the months with the highest UV index in Herndon?
How high is the UV index in June in Herndon?
Average temperature in June
Herndon, PA
- Average high temperature in June: 77°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (32.9°F).
- Average low temperature in June: 56.5°F
The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in June
Herndon, PA
- Average pressure in June: 29.94"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in June
Herndon, PA
- Average wind speed in June: 5.7mph
The windiest months (with the highest average wind speed) are March and April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in June
Herndon, PA
- Average humidity in June: 79%
The month with the highest relative humidity is February (82%).
The month with the lowest relative humidity is April (76%).
Average rainfall in June
Herndon, PA
- Average rainfall in June: 2.64"
The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are February and November (2.09").
Average rainfall days in June
Herndon, PA
- Average rainfall days in June: 15.7 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (9 days).
Average snowfall in June
Herndon, PA
- Average snowfall in June: 0"
The month with the highest snowfall is February (5.67").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in June
Herndon, PA
- Average snowfall days in June: 0 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in June /
Average sunshine in June
Herndon, PA
- Average daylight in June: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in June: 10h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in June
Herndon, PA
- Average sunshine days in June: 12.5 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (9.9 days).
Average UV index in June
Herndon, PA
- Average UV index in June: 6
The months with the highest UV index are 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
Herndon, PA
- Average cloud cover in June: 36
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in June
Herndon, PA
- Average visibility in June: 6mi
The months with the highest visibility are March, April, June, July and November (6mi).
The months with the lowest visibility are January, February, May, August, September, October and December (5mi).
Herndon, Pennsylvania, USA
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