May weather forecast
Gettysburg, PA

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The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, Pennsylvania
The iconic and unifying Pennsylvania monument in a vast green field with neat grounds and green trees in the city of Gettysburg, Pennsylvania

Weather in May

May in Gettysburg signifies the official start of the warm season with temperatures increasing significantly to fall between 52.2°F (11.2°C) and 71.1°F (21.7°C), contributing to the bloom of flora throughout the city. Changes in atmospheric pressure and temperature trends bring about regular rain showers, rendering it the wettest month with expected rainfall reaching 1.34" (34mm). The longer daylight hours combined with increased relative humidity make for pleasant, vibrant days. May’s higher UV index calls for added sun protection during outdoor activities.

Temperature

May brings a rise in Gettysburg's average high-temperature, moving from an enjoyable 61°F (16.1°C) in April to a pleasant 71.1°F (21.7°C). In the month of May, Gettysburg experiences an average low-temperature of 52.2°F (11.2°C).

Humidity

May is the most humid month, with an average relative humidity of 80%.

Rainfall

In Gettysburg, in May, during 14.8 rainfall days, 1.34" (34mm) of precipitation is typically accumulated. In Gettysburg, Pennsylvania, during the entire year, the rain falls for 125 days and collects up to 12.13" (308mm) of precipitation.

Snowfall

In Gettysburg, snow does not fall in May through September.

Daylight

The average length of the day in May is 14h and 23min.
On the first day of May in Gettysburg, sunrise is at 6:08 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:30 pm EDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

The months with the highest UV index are May through July, with an average maximum UV index of 6. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: An average UV index of 6 in May transforms into this advice:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.

Frequently asked questions

What are May temperatures?

The high-temperature, in May, in Gettysburg, is 71.1°F (21.7°C), while the low-temperature averages to 52.2°F (11.2°C).

What is the most humid month?

The most humid month is May, with an average relative humidity of 80%.

What is the average humidity in May?

The average relative humidity in May is 80%.

How much does it rain in May?

In May, the rain falls for 14.8 days. Throughout May, 1.34" (34mm) of precipitation is accumulated.

When it does not snow?

May through September are months without snowfall.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May?

In May, the average day length is 14h and 23min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:08 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:30 pm EDT.

How many hours of sunshine does Gettysburg have in May?

In Gettysburg, the average sunshine duration in May is 8.5h.

What is the month with the highest UV index?

May through July, with an average maximum UV index of 6, are months with the highest UV index.

What is the UV index intensity in May in Gettysburg?

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Gettysburg, PA

Average temperature in May - Gettysburg, PA
  • Average high temperature in May: 71.1°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (35.6°F).

  • Average low temperature in May: 52.2°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).

Average pressure in May
Gettysburg, PA

Average pressure in May - Gettysburg, PA
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in May
Gettysburg, PA

Average wind speed in May - Gettysburg, PA
  • Average wind speed in May: 6.3mph

The windiest months (with the highest average wind speed) are January, February and March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in May
Gettysburg, PA

Average humidity in May - Gettysburg, PA
  • Average humidity in May: 80%

The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are April and July (75%).

Average rainfall in May
Gettysburg, PA

Average rainfall in May - Gettysburg, PA
  • Average rainfall in May: 1.34"

The wettest month (with the highest rainfall) is July (1.46").
The driest months (with the least rainfall) are January and February (0.71").

Average rainfall days in May
Gettysburg, PA

Average rainfall days in May - Gettysburg, PA
  • Average rainfall days in May: 14.8 days

The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is January (5 days).

Average snowfall in May
Gettysburg, PA

Average snowfall in May - Gettysburg, PA
  • Average snowfall in May: 0"

The month with the highest snowfall is March (1.3").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Gettysburg, PA

Average snowfall days in May - Gettysburg, PA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Gettysburg, PA
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in May
Gettysburg, PA

Average sunshine days in May - Gettysburg, PA
  • Average sunshine days in May: 13.7 days

The month with the most sunshine days is November (21.6 days).
The month with the least sunshine days is August (13.6 days).

Average UV index in May
Gettysburg, PA

Average UV index in May - Gettysburg, PA
  • Average UV index in May: 6

The months with the highest UV index are May, June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in May
Gettysburg, PA

Average cloud cover in May - Gettysburg, PA
  • Average cloud cover in May: 46

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in May
Gettysburg, PA

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

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Gettysburg, Pennsylvania, USA

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