May weather forecast
Jamestown, PA

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Weather in May

The last month of the spring, May, is a pleasant month in Jamestown, Pennsylvania, with an average temperature ranging between max 69.3°F (20.7°C) and min 48.6°F (9.2°C).

Temperature

With the onset of May, Jamestown's average high-temperature sees a rise, moving from April's refreshing 56.8°F (13.8°C) to an agreeable 69.3°F (20.7°C). An average temperature of 48.6°F (9.2°C) is recorded during the nights in May.

Humidity

The months with the lowest humidity are May through July, with an average relative humidity of 79%.

Rainfall

In Jamestown, in May, during 17.6 rainfall days, 2.28" (58mm) of precipitation is typically accumulated. Throughout the year, in Jamestown, there are 167.1 rainfall days, and 24.25" (616mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Jamestown. May is the last month it regularly snows. During 0.5 snowfall days, in May, Jamestown aggregates 0.24" (6mm) of snow. In Jamestown, during the entire year, snow falls for 79.6 days and aggregates up to 25" (635mm) of snow.

Daylight

In Jamestown, the average length of the day in May is 14h and 32min.
On the first day of May, sunrise is at 6:17 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:50 am and sunset at 8:48 pm EDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In Jamestown, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In May, the maximum UV index of 5 suggests these recommendations:
Take necessary precautions - Suggestions to elude sunburn are provided. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the usual temperature for Jamestown in May?

The average high-temperature and low-temperature during May are 69.3°F (20.7°C) and 48.6°F (9.2°C) respectively.

What are the least humid months?

The months with the lowest humidity are May through July, with an average relative humidity of 79%.

What is the average humidity in May?

In Jamestown, the average relative humidity in May is 79%.

How many days does it rain in May?

In Jamestown, during May, the rain falls for 17.6 days and regularly aggregates up to 2.28" (58mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.5 snowfall days, in May, Jamestown aggregates 0.24" (6mm) of snow.

What is the average length of the day in May?

In Jamestown, the average day length in May is 14h and 32min.

When is the sunrise / sunset in May?

In May, on the first day of the month, sunrise is at 6:17 am and sunset at 8:19 pm. On the last day of the month, in Jamestown, sunrise is at 5:50 am and sunset at 8:48 pm EDT.

How many hours of sunshine does Jamestown have in May?

In May, the average sunshine duration is 8.5h.

How high is the UV index in May?

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health threat from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Jamestown, PA

Average temperature in May - Jamestown, PA
  • Average high temperature in May: 69.3°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 48.6°F

The month with the highest average low temperature is July (59.5°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).

Average pressure in May
Jamestown, PA

Average pressure in May - Jamestown, PA
  • Average pressure in May: 29.99"Hg

The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Jamestown, PA

Average wind speed in May - Jamestown, PA
  • Average wind speed in May: 6.4mph

The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).

Average humidity in May
Jamestown, PA

Average humidity in May - Jamestown, PA
  • Average humidity in May: 79%

The month with the highest relative humidity is February (89%).
The months with the lowest relative humidity are May, June and July (79%).

Average rainfall in May
Jamestown, PA

Average rainfall in May - Jamestown, PA
  • Average rainfall in May: 2.28"

The wettest month (with the highest rainfall) is October (2.52").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in May
Jamestown, PA

Average rainfall days in May - Jamestown, PA
  • Average rainfall days in May: 17.6 days

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (8 days).

Average snowfall in May
Jamestown, PA

Average snowfall in May - Jamestown, PA
  • Average snowfall in May: 0.24"

The month with the highest snowfall is January (6.38").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Jamestown, PA

Average snowfall days in May - Jamestown, PA
  • Average snowfall days in May: 0.5 days

The month with the highest number of snowfall days is January (19.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Jamestown, PA

Average daylight in May / Average sunshine in May - Jamestown, PA
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in May: 8h and 3min

The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 2h and 24min).

Average sunshine days in May
Jamestown, PA

Average sunshine days in May - Jamestown, PA
  • Average sunshine days in May: 11.2 days

The month with the most sunshine days is August (12.6 days).
The month with the least sunshine days is February (6.3 days).

Average UV index in May
Jamestown, PA

Average UV index in May - Jamestown, PA
  • Average UV index in May: 5

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).

Average cloud cover in May
Jamestown, PA

Average cloud cover in May - Jamestown, PA
  • Average cloud cover in May: 47

The month with the most cloud cover is January (Cloud cover 76).
The month with the least cloud cover is August (Cloud cover 36).

Average visibility in May
Jamestown, PA

Average visibility in May - Jamestown, PA
  • Average visibility in May: 5mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (5mi).
The months with the lowest visibility are January, February and December (4mi).

Jamestown, Pennsylvania, USA

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