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
The transition from April to May brings a temperature rise, with average high-temperatures increasing from a moderate 60.1°F (15.6°C) to an agreeable 71.2°F (21.8°C). Gratztown's temperature lowers to a mean of 51.1°F (10.6°C) during the nights in May.Humidity
The average relative humidity in May is 78%.Rainfall
May is the month with the most rainfall in Gratztown. Rain falls for 19.7 days and accumulates 2.83" (72mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
The average length of the day in May in Gratztown is 14h and 26min.On the first day of the month, sunrise is at 6:17 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:51 am and sunset at 8:42 pm EDT.
Sunshine
In May, the average sunshine in Gratztown, Pennsylvania, is 8.9h.UV index
In Gratztown, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: In May, a regular UV index of 5 translates into these guidelines:
Act with care - The suggestion to avoid sunburn is emphasized. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
Frequently asked questions
What is the average May temperature in Gratztown?
What is the average humidity in May in Gratztown?
What is the rainiest month in Gratztown?
How much does it rain in Gratztown in May?
When it does not snow in Gratztown?
Does it snow in Gratztown in May?
How many hours of daylight does Gratztown have in May?
When is the sunrise / sunset in May in Gratztown?
How many hours of sunshine does Gratztown have in May?
How high is the UV index in May in Gratztown?
Average temperature in May
Gratztown, PA
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 51.1°F
The month with the highest average low temperature is July (60.8°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in May
Gratztown, 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
Gratztown, PA
- Average wind speed in May: 6.2mph
The windiest month (with the highest average wind speed) is January (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Gratztown, PA
- Average humidity in May: 78%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (77%).
Average rainfall in May
Gratztown, PA
- Average rainfall in May: 2.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is November (1.42").
Average rainfall days in May
Gratztown, PA
- Average rainfall days in May: 19.7 days
The month with the highest number of rainy days is May (19.7 days).
The month with the least rainy days is February (10 days).
Average snowfall in May
Gratztown, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (3.66").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Gratztown, PA
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (16.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Gratztown, PA
- Average daylight in May: 14h and 2min
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 24min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Gratztown, PA
- Average sunshine days in May: 9.3 days
The month with the most sunshine days is November (15.8 days).
The month with the least sunshine days is January (7.3 days).
Average UV index in May
Gratztown, PA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Gratztown, PA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in May
Gratztown, PA
- Average visibility in May: 5mi
The months with the highest visibility are April and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October and December (5mi).
Gratztown, Pennsylvania, USA
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