May weather forecast
Hummelstown, PA

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Weather in May

May, the last month of the spring in Hummelstown, is a pleasant month, with temperature in the range of an average low of 51.3°F (10.7°C) and an average high of 69.8°F (21°C).

Temperature

May comes with an increase, with the average high-temperature moving from a mild 59.5°F (15.3°C) in April to an agreeable 69.8°F (21°C). Throughout May, Hummelstown registers a consistent average low-temperature of 51.3°F (10.7°C).

Humidity

The months with the highest humidity in Hummelstown are February and May, with an average relative humidity of 81%.

Rainfall

The month with the most rainfall is May, when the rain falls for 18.4 days and typically aggregates up to 3.15" (80mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in May in Hummelstown, Pennsylvania, is 14h and 26min.
On the first day of May in Hummelstown, sunrise is at 6:05 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:30 pm EDT.

Sunshine

The average sunshine in May in Hummelstown is 8.4h.

UV index

The months with the highest UV index in Hummelstown are May through July, with an average maximum UV index of 6. A UV Index value of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, the maximum UV index of 6 suggests this advice:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. Seek shade and limit direct sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Keep in mind that shade structures like parasols or canopies do not offer complete sun protection. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
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Frequently asked questions

What is the average May temperature in Hummelstown?

In Hummelstown, 69.8°F (21°C) is the average high-temperature and 51.3°F (10.7°C) is the average low-temperature during May.

What are the most humid months in Hummelstown?

The months with the highest humidity are February and May, with an average relative humidity of 81%.

What is the average humidity in May in Hummelstown?

In May, the average relative humidity in Hummelstown is 81%.

What is the wettest month in Hummelstown?

The month with the most rainfall in Hummelstown is May, when the rain falls for 18.4 days and typically aggregates up to 3.15" (80mm) of precipitation.

How many days does it rain in May in Hummelstown?

In May, in Hummelstown, Pennsylvania, the rain falls for 18.4 days. Throughout May, 3.15" (80mm) of precipitation is accumulated.

When it does not snow in Hummelstown?

May through September are months without snowfall in Hummelstown, Pennsylvania.

Does it snow in Hummelstown in May?

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

What is the average length of the day in May in Hummelstown?

In May, the average day length is 14h and 26min.

What time are sunrise and sunset in May in Hummelstown?

On the first day of May, sunrise is at 6:05 am and sunset at 8:02 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 8:30 pm EDT.

How long on average sun shines in May in Hummelstown?

In May, the average sunshine duration in Hummelstown is 8.4h.

What are the months with the highest UV index in Hummelstown?

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

What is the UV index reading in May in Hummelstown?

In Hummelstown, Pennsylvania, the average daily maximum UV index in May is 6. A UV Index estimate of 6 to 7 represents a high hazard to health from exposure to Sun's UV rays.
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
Hummelstown, PA

Average temperature in May - Hummelstown, PA
  • Average high temperature in May: 69.8°F

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (34.2°F).

  • Average low temperature in May: 51.3°F

The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).

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Average pressure in May
Hummelstown, PA

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

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in May
Hummelstown, PA

Average wind speed in May - Hummelstown, PA
  • Average wind speed in May: 6.5mph

The windiest month (with the highest average wind speed) is March (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

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Average humidity in May
Hummelstown, PA

Average humidity in May - Hummelstown, PA
  • Average humidity in May: 81%

The months with the highest relative humidity are February and May (81%).
The months with the lowest relative humidity are March and April (76%).

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Average rainfall in May
Hummelstown, PA

Average rainfall in May - Hummelstown, PA
  • Average rainfall in May: 3.15"

The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is September (2.05").

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Average rainfall days in May
Hummelstown, PA

Average rainfall days in May - Hummelstown, PA
  • Average rainfall days in May: 18.4 days

The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is January (8.5 days).

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Average snowfall in May
Hummelstown, PA

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

The month with the highest snowfall is January (3.94").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Hummelstown, PA

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

The month with the highest number of snowfall days is January (9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Hummelstown, 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 2min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

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Average sunshine days in May
Hummelstown, PA

Average sunshine days in May - Hummelstown, PA
  • Average sunshine days in May: 10 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is May (10 days).

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Average UV index in May
Hummelstown, PA

Average UV index in May - Hummelstown, 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, March, November and December (UV index 2).

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Average cloud cover in May
Hummelstown, PA

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

The month with the most cloud cover is February (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in May
Hummelstown, PA

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

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

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Hummelstown, Pennsylvania, USA

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