May weather forecast
Mountain Brook, AL

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Weather in May

As May enters, it delights residents with its quintessential spring climate, characterized by warmer temperatures. Even though rainfall is not at its peak, rain still occurs. The end of May sees the introduction of summer weather, with higher temperatures setting in. Mountain Brook showcases a mix of spring blooms and emerging summer sunshine. May is the ideal period for those who desire to enjoy the climate bridge between spring and summer.

Temperature

May showcases a minor temperature ascent, adjusting from April's moderately hot 73.4°F (23°C) to a still warm 81.3°F (27.4°C). May's average low-temperature reading in Mountain Brook, Alabama, settles at a refreshing 61°F (16.1°C).

Heat index

The heat index in May is estimated at a hot 86°F (30°C). Uninterrupted activity during exposure could lead to a sense of exhaustion, possibly causing heat cramps.
Take note of the fact that heat index values are based on shaded circumstances with light airflows. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is the outcome of merging air's temperature and its humidity metrics. Metabolic differences, pregnancy status, and the level of physical activity are additional factors influencing an individual's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Young ones regularly neglect the requirement for rest and fluid replenishment. Thirst is a late stage of dehydration - so, it is necessary to keep hydrated, particularly during extended periods of physical exertion.

Humidity

In May, the average relative humidity is 73%.

Rainfall

In Mountain Brook, in May, during 12.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Mountain Brook, during the entire year, the rain falls for 143.1 days and collects up to 18.58" (472mm) of precipitation.

Snowfall

In Mountain Brook, snow does not fall in April through October.

Daylight

In Mountain Brook, the average length of the day in May is 13h and 55min.
On the first day of the month, sunrise is at 5:57 am and sunset at 7:30 pm. On the last day of May, sunrise is at 5:38 am and sunset at 7:51 pm CDT.

Sunshine

In May, the average sunshine is 10h.

UV index

In Mountain Brook, the average daily maximum UV index in May is 6. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A maximum UV index of 6 in May translates into the following recommendations:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a time when UV radiation is at its strongest, and remember that parasols or canopies do not offer full protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.

Frequently asked questions

What are the temperatures in May?

The high-temperature, in May, in Mountain Brook, is 81.3°F (27.4°C), while the low-temperature averages to 61°F (16.1°C). In May, the average heat index (a.k.a. 'apparent temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is estimated at 86°F (30°C).

What is the average humidity in May?

The average relative humidity in May is 73%.

How much does it rain in May?

In Mountain Brook, in May, during 12.6 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

When it does not snow?

In Mountain Brook, snow does not fall in April through October.

What is the average length of the day in May?

The average day length in May is 13h and 55min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:57 am and sunset at 7:30 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 7:51 pm CDT.

How many hours of sunshine does Mountain Brook have in May?

In May, the average sunshine duration is 10h.

What is the UV index reading in May?

In May, the average daily maximum UV index in Mountain Brook is 6. A UV Index estimate of 6 to 7 represents a high 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
Mountain Brook, AL

Average temperature in May - Mountain Brook, AL
  • Average high temperature in May: 81.3°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (50.7°F).

  • Average low temperature in May: 61°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (35.2°F).

Average pressure in May
Mountain Brook, AL

Average pressure in May - Mountain Brook, AL
  • Average pressure in May: 30.01"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).

Average wind speed in May
Mountain Brook, AL

Average wind speed in May - Mountain Brook, AL
  • Average wind speed in May: 5.7mph

The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).

Average humidity in May
Mountain Brook, AL

Average humidity in May - Mountain Brook, AL
  • Average humidity in May: 73%

The month with the highest relative humidity is December (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Mountain Brook, AL

Average rainfall in May - Mountain Brook, AL
  • Average rainfall in May: 1.54"

The wettest month (with the highest rainfall) is June (1.97").
The driest month (with the least rainfall) is November (1.02").

Average rainfall days in May
Mountain Brook, AL

Average rainfall days in May - Mountain Brook, AL
  • Average rainfall days in May: 12.6 days

The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is November (7.9 days).

Average snowfall in May
Mountain Brook, AL

Average snowfall in May - Mountain Brook, AL
  • Average snowfall in May: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in May
Mountain Brook, AL

Average snowfall days in May - Mountain Brook, AL
  • Average snowfall days in May: 0 days

The months with the highest number of snowfall days are January and February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Mountain Brook, AL

Average daylight in May / Average sunshine in May - Mountain Brook, AL
  • Average daylight in May: 13h and 5min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in May: 10h and 0min

The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days in May
Mountain Brook, AL

Average sunshine days in May - Mountain Brook, AL
  • Average sunshine days in May: 16.4 days

The month with the most sunshine days is October (20.9 days).
The month with the least sunshine days is July (11.1 days).

Average UV index in May
Mountain Brook, AL

Average UV index in May - Mountain Brook, AL
  • Average UV index in May: 6

The months with the highest UV index are July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in May
Mountain Brook, AL

Average cloud cover in May - Mountain Brook, AL
  • Average cloud cover in May: 33

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June and September (Cloud cover 30).

Average visibility in May
Mountain Brook, AL

Average visibility in May - Mountain Brook, AL
  • 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).

Mountain Brook, Alabama, USA

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