May weather forecast
Chester, MD

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Weather in May

May, the last month of the spring in Chester, is an agreeable month, with an average temperature fluctuating between 57.6°F (14.2°C) and 70.9°F (21.6°C).

Temperature

In May, the average high-temperature increases from an enjoyable 61.5°F (16.4°C) in April to a pleasant 70.9°F (21.6°C). In Chester, in May, the average low-temperature is 57.6°F (14.2°C).

Humidity

The most humid month in Chester is May, with an average relative humidity of 79%.

Rainfall

In Chester, Maryland, in May, during 18.1 rainfall days, 2.91" (74mm) of precipitation is typically accumulated. Throughout the year, in Chester, there are 159 rainfall days, and 32.36" (822mm) of precipitation is accumulated.

Snowfall

In Chester, Maryland, snow does not fall in May through October.

Ocean temperature

In Chester, Maryland, in May, the average water temperature is 57.4°F (14.1°C).
Note: Swimming in 57.4°F (14.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

Daylight

In May, the average length of the day is 14h and 19min.
On the first day of the month, sunrise is at 6:07 am and sunset at 7:57 pm. On the last day of May, in Chester, sunrise is at 5:41 am and sunset at 8:23 pm EDT.

Sunshine

The average sunshine in May in Chester is 9.1h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in May interpret into the following advice:
Take precautions against overexposure. Fair-skinned people may get burned in less than 20 minutes. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Chester?

In May, the average high-temperature is 70.9°F (21.6°C), and the average low-temperature is 57.6°F (14.2°C).

What is the most humid month in Chester?

With an average relative humidity of 79%, May is the most humid month in Chester.

What is the average humidity in May in Chester?

In Chester, Maryland, the average relative humidity in May is 79%.

How much does it rain in Chester in May?

In Chester, in May, during 18.1 rainfall days, 2.91" (74mm) of precipitation is typically accumulated.

When it does not snow in Chester?

May through October are months without snowfall.

Does it snow in Chester in May?

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

How cold is the water in May in Chester?

In Chester, in May, the average water temperature is 57.4°F (14.1°C). Swimming in 57.4°F (14.1°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.

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

The average day length in May is 14h and 19min.

When are sunrise and sunset in May in Chester?

On the first day of May in Chester, Maryland, sunrise is at 6:07 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:41 am and sunset at 8:23 pm EDT.

How many hours of sunshine does Chester have in May?

In Chester, Maryland, the average sunshine duration in May is 9.1h.

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

The months with the highest UV index in Chester are May through August, with an average maximum UV index of 6.

How high is the UV index in May in Chester?

In Chester, Maryland, 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 unprotected exposure to UV radiation.
Today
Tomorrow
Long-term
YearJFMAMayJJASOND
Apr
May
Jun
Average high temperature
61.5°F 16.4°C
70.9°F 21.6°C
79.3°F 26.3°C
Average low temperature
48°F 8.9°C
57.6°F 14.2°C
66°F 18.9°C
Average pressure
29.99" 762mmHg
30.01" 762mmHg
29.94" 760mmHg
Average wind speed
9.9mph 15.9km/h
8.1mph 13km/h
7.6mph 12.2km/h
Average max. wind speed
10.9mph 17.5km/h
8.9mph 14.3km/h
8.4mph 13.5km/h
Average wind speed gusts
16.4mph 26.4km/h
13.4mph 21.6km/h
12.6mph 20.3km/h
Average humidity
74%
79%
77%
Average rainfall
2.76" 70mm
2.91" 74mm
3.19" 81mm
Average rainfall days
15.3
18.1
15.6
Average snowfall
0.12" 3mm
0" 0mm
0" 0mm
Average snowfall days
0.1
0
0
Average sea temperature
51.5°F 10.8°C
57.4°F 14.1°C
69.1°F 20.6°C
Average daylight
13h 15min
14h 19min
14h 52min
Average sunshine
8h 48min
9h 6min
10h 18min
Average sunshine days
13.2
11.1
12.6
Average UV index
4
6
6
Average cloud cover
40%
42%
31%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in May
Chester, MD

Average temperature in May - Chester, MD
  • Average high temperature in May: 70.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (40.1°F).

  • Average low temperature in May: 57.6°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (29.5°F).

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Average pressure in May
Chester, MD

Average pressure in May - Chester, MD
  • 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
Chester, MD

Average wind speed in May - Chester, MD
  • Average wind speed in May: 8.1mph

The windiest months (with the highest average wind speed) are February and March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Chester, MD

Average humidity in May - Chester, MD
  • Average humidity in May: 79%

The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and November (73%).

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Average rainfall in May
Chester, MD

Average rainfall in May - Chester, MD
  • Average rainfall in May: 2.91"

The wettest month (with the highest rainfall) is July (3.31").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in May
Chester, MD

Average rainfall days in May - Chester, MD
  • Average rainfall days in May: 18.1 days

The month with the highest number of rainy days is May (18.1 days).
The month with the least rainy days is November (8.8 days).

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Average snowfall in May
Chester, MD

Average snowfall in May - Chester, MD
  • Average snowfall in May: 0"

The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Chester, MD

Average snowfall days in May - Chester, MD
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (4.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average sea temperature in May
Chester, MD

Average sea temperature in May - Chester, MD
  • Average sea temperature in May: 57.4°F

The best month for swimming (with the highest average sea temperature) is August (77.8°F).
The coldest month (with the lowest average sea temperature) is February (45.1°F).

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Average daylight in May /
Average sunshine in May
Chester, MD

Average daylight in May / Average sunshine in May - Chester, MD
  • Average daylight in May: 14h and 19min

The month with the longest days is June (Average daylight: 14h and 52min).
The month with the shortest days is December (Average daylight: 9h and 29min).

  • Average sunshine in May: 9h and 6min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 0min).

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Average sunshine days in May
Chester, MD

Average sunshine days in May - Chester, MD
  • Average sunshine days in May: 11.1 days

The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (11.1 days).

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Average UV index in May
Chester, MD

Average UV index in May - Chester, 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).

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Average cloud cover in May
Chester, MD

Average cloud cover in May - Chester, MD
  • Average cloud cover in May: 42

The months with the most cloud cover are February, March and December (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in May
Chester, MD

Average visibility in May - Chester, MD
  • Average visibility in May: 6mi

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

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