Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
As Grampian transitions into May, the average high-temperature is observed to rise from a refreshing 56.1°F (13.4°C) in April to an agreeable 68.4°F (20.2°C). Throughout May, Grampian anticipates an average low-temperature of 48°F (8.9°C).Humidity
In May, the average relative humidity is 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.4 days and typically aggregates up to 2.28" (58mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.5 snowfall days, in May, Grampian aggregates 0.28" (7mm) of snow. In Grampian, during the entire year, snow falls for 46.2 days and aggregates up to 14.45" (367mm) of snow.Daylight
In May, the average length of the day is 14h and 29min.On the first day of the month, sunrise is at 6:11 am and sunset at 8:11 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:39 pm EDT.
Sunshine
In Grampian, the average sunshine in May is 8h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 5 during May leads to these instructions:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
What is the wettest month?
How many days does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When are sunrise and sunset in May in Grampian?
How long on average sun shines in May in Grampian?
What are the months with the highest UV index?
What is the UV index reading in May in Grampian?
Average temperature in May
Grampian, PA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in May: 48°F
The month with the highest average low temperature is July (57.9°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure in May
Grampian, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Grampian, PA
- Average wind speed in May: 7.1mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.5mph).
Average humidity in May
Grampian, PA
- Average humidity in May: 79%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is July (77%).
Average rainfall in May
Grampian, PA
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are January and November (1.06").
Average rainfall days in May
Grampian, PA
- Average rainfall days in May: 17.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Grampian, PA
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grampian, PA
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grampian, 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 18min).
- Average sunshine in May: 8h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in May
Grampian, PA
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in May
Grampian, PA
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Grampian, PA
- Average cloud cover in May: 51
The month with the most cloud cover is January (Cloud cover 74).
The months with the least cloud cover are July and August (Cloud cover 40).
Average visibility in May
Grampian, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Grampian, Pennsylvania, USA
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