May weather forecast
Montchanin, DE

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Weather in May

The last month of the spring, May, is an agreeable month in Montchanin, Delaware, with an average temperature fluctuating between 71.6°F (22°C) and 54.5°F (12.5°C).

Temperature

With the arrival of May, the average high-temperature transitions from a refreshing 61.3°F (16.3°C) in April to an agreeable 71.6°F (22°C). Throughout the month of May, Montchanin observes an average nighttime temperature of 54.5°F (12.5°C).

Humidity

The average relative humidity in May is 77%.

Rainfall

In Montchanin, during May, the rain falls for 18.7 days and regularly aggregates up to 3.19" (81mm) of precipitation. In Montchanin, during the entire year, the rain falls for 168.9 days and collects up to 35.55" (903mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.1 snowfall days, in May, Montchanin aggregates 0.12" (3mm) of snow. In Montchanin, during the entire year, snow falls for 21.9 days and aggregates up to 12.05" (306mm) of snow.

Daylight

In May, the average length of the day is 14h and 23min.
On the first day of May, sunrise is at 6:01 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:24 pm EDT.

Sunshine

In Montchanin, the average sunshine in May is 8.6h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: A daily high UV index of 6 in May leads to these guidelines:
Ward off overexposure. Defence against solar harm is crucial. Remember that the sun's UV radiation is strongest between 10 a.m. and 4 p.m. Make an effort to avoid direct sun exposure during these hours. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

An average high-temperature, in May, in Montchanin, is 71.6°F (22°C) and the average low-temperature is 54.5°F (12.5°C).

What is the average humidity in May?

In May, the average relative humidity is 77%.

How much does it rain in May?

In Montchanin, during May, the rain falls for 18.7 days and regularly aggregates up to 3.19" (81mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.1 snowfall days, in May, Montchanin aggregates 0.12" (3mm) of snow.

What is the average length of the day in May?

The average day length in May is 14h and 23min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 6:01 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:24 pm EDT.

How many hours of sunshine does Montchanin have in May?

In May, the average sunshine duration is 8.6h.

When is the highest UV index?

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

How high is the UV index in May in Montchanin?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Montchanin, DE

Average temperature in May - Montchanin, DE
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (37°F).

  • Average low temperature in May: 54.5°F

The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).

Average pressure in May
Montchanin, DE

Average pressure in May - Montchanin, DE
  • 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
Montchanin, DE

Average wind speed in May - Montchanin, DE
  • Average wind speed in May: 6.8mph

The windiest months (with the highest average wind speed) are January, February and March (8.6mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

Average humidity in May
Montchanin, DE

Average humidity in May - Montchanin, DE
  • Average humidity in May: 77%

The month with the highest relative humidity is October (78%).
The month with the lowest relative humidity is April (72%).

Average rainfall in May
Montchanin, DE

Average rainfall in May - Montchanin, DE
  • Average rainfall in May: 3.19"

The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (2.36").

Average rainfall days in May
Montchanin, DE

Average rainfall days in May - Montchanin, DE
  • Average rainfall days in May: 18.7 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in May
Montchanin, DE

Average snowfall in May - Montchanin, DE
  • Average snowfall in May: 0.12"

The month with the highest snowfall is March (3.58").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Montchanin, DE

Average snowfall days in May - Montchanin, DE
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Montchanin, DE

Average daylight in May / Average sunshine in May - Montchanin, DE
  • 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 4min

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 54min).

Average sunshine days in May
Montchanin, DE

Average sunshine days in May - Montchanin, DE
  • Average sunshine days in May: 9.8 days

The month with the most sunshine days is November (18.6 days).
The months with the least sunshine days are May and July (9.8 days).

Average UV index in May
Montchanin, DE

Average UV index in May - Montchanin, DE
  • 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, February, November and December (UV index 2).

Average cloud cover in May
Montchanin, DE

Average cloud cover in May - Montchanin, DE
  • Average cloud cover in May: 46

The months with the most cloud cover are February and March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in May
Montchanin, DE

Average visibility in May - Montchanin, DE
  • 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).

Montchanin, Delaware, USA

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