May weather forecast
Biddeford, ME

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Weather in May

May ushers in a vivid freshness with an astounding spike in temperatures soaring to an average high of 59.9°F (15.5°C) in Biddeford. The snow completely makes way for rainfall, nourishing the blooming flora, part of the spring charm. The frequency of sunshine days sees an uptick, adding up to the overall pleasantness of the weather. As the city moves towards the summer season, the daylight hours extend, implying more sunlit times. Come June, and the anticipation of summer stirs a sense of excitement in the atmosphere.

Temperature

As May begins, there is an increase in the average high-temperature, moving from a chilly 49.8°F (9.9°C) in April to a moderate 59.9°F (15.5°C). During the nights in May, Biddeford observes an average low-temperature of 46.4°F (8°C).

Humidity

The average relative humidity in May is 80%.

Rainfall

In Biddeford, in May, it is raining for 13.9 days, with typically 2.32" (59mm) of accumulated precipitation. In Biddeford, during the entire year, the rain falls for 133.9 days and collects up to 27.44" (697mm) 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, Biddeford aggregates 0.2" (5mm) of snow. Throughout the year, there are 33.7 snowfall days, and 18.94" (481mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 43min.
On the first day of May, sunrise is at 5:33 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 8:15 pm EDT.

Sunshine

In May, the average sunshine is 7.9h.

UV index

In Biddeford, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 4 during May leads to these advisories:
Undertake precautions - It is suggested to shield oneself from sunburn. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures?

The high-temperature, in May, in Biddeford, is 59.9°F (15.5°C), while the low-temperature averages to 46.4°F (8°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 May, the rain falls for 13.9 days. Throughout May, 2.32" (59mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows in Biddeford. During 0.1 snowfall days, in May, Biddeford aggregates 0.2" (5mm) of snow.

How many hours of daylight does Biddeford have in May?

In May, the average day length is 14h and 43min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:33 am and sunset at 7:44 pm. On the last day of the month, sunrise is at 5:03 am and sunset at 8:15 pm EDT.

How long on average sun shines in May?

In May, the average sunshine duration in Biddeford is 7.9h.

What is the UV index intensity in May?

In Biddeford, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's UV radiation.
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
Biddeford, ME

Average temperature in May - Biddeford, ME
  • Average high temperature in May: 59.9°F

The warmest month (with the highest average high temperature) is July (74.5°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in May: 46.4°F

The month with the highest average low temperature is July (61.2°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in May
Biddeford, ME

Average pressure in May - Biddeford, ME
  • Average pressure in May: 29.99"Hg

The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Biddeford, ME

Average wind speed in May - Biddeford, ME
  • Average wind speed in May: 8.1mph

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in May
Biddeford, ME

Average humidity in May - Biddeford, ME
  • Average humidity in May: 80%

The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (75%).

Average rainfall in May
Biddeford, ME

Average rainfall in May - Biddeford, ME
  • Average rainfall in May: 2.32"

The wettest month (with the highest rainfall) is October (2.95").
The driest month (with the least rainfall) is September (1.34").

Average rainfall days in May
Biddeford, ME

Average rainfall days in May - Biddeford, ME
  • Average rainfall days in May: 13.9 days

The month with the highest number of rainy days is April (14.3 days).
The month with the least rainy days is January (6.3 days).

Average snowfall in May
Biddeford, ME

Average snowfall in May - Biddeford, ME
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (4.41").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Biddeford, ME

Average snowfall days in May - Biddeford, ME
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Biddeford, ME

Average daylight in May / Average sunshine in May - Biddeford, ME
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).

  • Average sunshine in May: 7h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 18min).
The months with the least sunshine are February and December (Average sunshine: 4h and 42min).

Average sunshine days in May
Biddeford, ME

Average sunshine days in May - Biddeford, ME
  • Average sunshine days in May: 14.6 days

The month with the most sunshine days is September (18.3 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in May
Biddeford, ME

Average UV index in May - Biddeford, ME
  • Average UV index in May: 4

The month with the highest UV index is August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in May
Biddeford, ME

Average cloud cover in May - Biddeford, ME
  • Average cloud cover in May: 48

The month with the most cloud cover is March (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 32).

Average visibility in May
Biddeford, ME

Average visibility in May - Biddeford, ME
  • 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).

Biddeford, Maine, USA

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