May weather forecastForest Heights, MD
May
Weather in May
May, the last month of the spring in Forest Heights, is a moderately hot month, with an average temperature varying between 74.7°F (23.7°C) and 56.8°F (13.8°C).Temperature
With the onset of May, Forest Heights's average high-temperature sees a rise, moving from April's refreshing 65.1°F (18.4°C) to a warm 74.7°F (23.7°C). The low-temperature averages to a mild 56.8°F (13.8°C) during the nights of May.Humidity
The months with the highest humidity are May, October and December, with an average relative humidity of 76%.Rainfall
In Forest Heights, Maryland, during May, the rain falls for 17.7 days and regularly aggregates up to 2.95" (75mm) of precipitation. In Forest Heights, Maryland, during the entire year, the rain falls for 158.2 days and collects up to 30.67" (779mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In Forest Heights, Maryland, the average length of the day in May is 14h and 19min.On the first day of the month, sunrise is at 6:09 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:44 am and sunset at 8:26 pm EDT.
Sunshine
In May, the average sunshine in Forest Heights is 9h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: The UV index of 6 in May translates into these instructions:
Guard against overexposure. Protection from sun-induced harm is essential. Between 10 a.m. and 4 p.m., the Sun emits the most powerful UV radiation. Limit direct exposure to the Sun during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Forest Heights, MD
- Average high temperature in May: 74.7°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in May: 56.8°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in May
Forest Heights, MD
- 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
Forest Heights, MD
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in May
Forest Heights, MD
- Average humidity in May: 76%
The months with the highest relative humidity are May, October and December (76%).
The months with the lowest relative humidity are April and July (71%).
Average rainfall in May
Forest Heights, MD
- Average rainfall in May: 2.95"
The wettest month (with the highest rainfall) is August (3.43").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Forest Heights, MD
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in May
Forest Heights, MD
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.48").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Forest Heights, MD
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (4.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Forest Heights, MD
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in May
Forest Heights, MD
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.5 days).
Average UV index in May
Forest Heights, MD
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in May
Forest Heights, MD
- Average cloud cover in May: 43
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Forest Heights, MD
- Average visibility in May: 5mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
