June, the first month of the summer in
Jamestown, is a moderately hot month, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 76.5°F (24.7°C).
Temperature
A subtle rise in the average high-temperature is observed during June, adjusting from a pleasant 69.3°F (20.7°C) in
May to a warm 76.5°F (24.7°C). During the month of June, Jamestown anticipates a mean low-temperature of 55.4°F (13°C).
Humidity
The months with the lowest humidity are May through
July, with an average relative humidity of 79%.
Rainfall
In Jamestown, during June, the rain falls for 16.2 days and regularly aggregates up to 2.48" (63mm) of precipitation. In Jamestown, during the entire year, the rain falls for 167.1 days and collects up to 24.25" (616mm) of precipitation.
Snowfall
In Jamestown, snow does not fall in June through
September.
Daylight
With an average of 15h and 6min of daylight, June has the longest days of the year.
On the first day of June, sunrise is at 5:49 am and sunset at 8:49 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:59 pm EDT.
Sunshine
In Jamestown, the average sunshine in June is 9.2h.
UV index
In June, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: In June, the average maximum UV index of 5 translates into the following recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Employ a wide-brim hat for potent defense against up to 50% of UV rays.