May weather forecast
Lake Harmony, PA

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Weather in May

May, the last month of the spring in Lake Harmony, is an enjoyable month, with an average temperature fluctuating between 66.7°F (19.3°C) and 48.2°F (9°C).

Temperature

Lake Harmony's weather in May presents a rise in the average high-temperature, moving from a cool 55°F (12.8°C) in April to a comfortable 66.7°F (19.3°C). Lake Harmony throughout May, experiences an average nighttime temperature of 48.2°F (9°C).

Humidity

The average relative humidity in May is 80%.

Rainfall

In Lake Harmony, in May, during 19.3 rainfall days, 3.54" (90mm) of precipitation is typically accumulated. In Lake Harmony, during the entire year, the rain falls for 173.5 days and collects up to 36.57" (929mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Lake Harmony aggregates 0.39" (10mm) of snow. Throughout the year, there are 62.9 snowfall days, and 38.11" (968mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 30min.
On the first day of May, sunrise is at 5:59 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:28 pm EDT.

Sunshine

The average sunshine in May is 7.8h.

UV index

May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.

Frequently asked questions

What is the usual temperature for Lake Harmony in May?

The average high-temperature, in May, in Lake Harmony, is 66.7°F (19.3°C), while the average low-temperature is 48.2°F (9°C).

What is the average humidity in May?

The average relative humidity in May is 80%.

How many days does it rain in May?

In Lake Harmony, in May, it is raining for 19.3 days, with typically 3.54" (90mm) of accumulated precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Lake Harmony aggregates 0.39" (10mm) of snow.

How many hours of daylight does Lake Harmony have in May?

The average day length in May is 14h and 30min.

When are sunrise and sunset in May?

On the first day of May, sunrise is at 5:59 am and sunset at 7:59 pm. On the last day of the month, sunrise is at 5:32 am and sunset at 8:28 pm EDT.

How long on average sun shines in May?

The average sunshine duration in May is 7.8h.

What is the month with the highest UV index?

May through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk 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
Lake Harmony, PA

Average temperature in May - Lake Harmony, PA
  • Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (30.6°F).

  • Average low temperature in May: 48.2°F

The month with the highest average low temperature is July (60.1°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).

Average pressure in May
Lake Harmony, PA

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

The month with the highest atmospheric pressure is November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in May
Lake Harmony, PA

Average wind speed in May - Lake Harmony, PA
  • Average wind speed in May: 6.6mph

The windiest months (with the highest average wind speed) are January and March (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity in May
Lake Harmony, PA

Average humidity in May - Lake Harmony, PA
  • Average humidity in May: 80%

The months with the highest relative humidity are February and December (84%).
The months with the lowest relative humidity are April, June and July (78%).

Average rainfall in May
Lake Harmony, PA

Average rainfall in May - Lake Harmony, PA
  • Average rainfall in May: 3.54"

The wettest month (with the highest rainfall) is July (3.66").
The driest month (with the least rainfall) is September (2.01").

Average rainfall days in May
Lake Harmony, PA

Average rainfall days in May - Lake Harmony, PA
  • Average rainfall days in May: 19.3 days

The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is February (9.2 days).

Average snowfall in May
Lake Harmony, PA

Average snowfall in May - Lake Harmony, PA
  • Average snowfall in May: 0.39"

The month with the highest snowfall is January (9.02").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Lake Harmony, PA

Average snowfall days in May - Lake Harmony, PA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Lake Harmony, PA

Average daylight in May / Average sunshine in May - Lake Harmony, 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: 7h and 5min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in May
Lake Harmony, PA

Average sunshine days in May - Lake Harmony, PA
  • Average sunshine days in May: 9.5 days

The month with the most sunshine days is September (14.8 days).
The month with the least sunshine days is February (9.4 days).

Average UV index in May
Lake Harmony, PA

Average UV index in May - Lake Harmony, 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
Lake Harmony, PA

Average cloud cover in May - Lake Harmony, PA
  • Average cloud cover in May: 52

The months with the most cloud cover are February and December (Cloud cover 60).
The month with the least cloud cover is July (Cloud cover 38).

Average visibility in May
Lake Harmony, PA

Average visibility in May - Lake Harmony, PA
  • Average visibility in May: 5mi

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

Lake Harmony, Pennsylvania, USA

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