May weather forecast
Calera, AL

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Weather in May

The transition from spring to summer initiates in Calera, Alabama, with the onset of May. An average high temperature of 81.5°F (27.5°C) marks this transition. The rainfall decreases, making the weather conditions more predictable and ideal for planning outdoor trips. The evenings remain pleasant, accommodating cool breezes and warmth. May symbolizes the start of summer and sees daylight hours longer than any winter month.

Temperature

The beginning of May in Calera marks a minor shift in the average high-temperature, moving from April's 74.1°F (23.4°C) to a still warm 81.5°F (27.5°C). Calera's May nights cool down to an average low-temperature of 60.8°F (16°C).

Heat index

In May, the average heat index is calculated to be a tropical 86°F (30°C). Persistently participating in activities during exposure may lead to fatigue and induce heat cramps.
The metrics for the heat index are tailored for both shady environments and light winds. An exposure to direct sunlight may lift the heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. Factors such as metabolic variation, pregnancy, and physical activity play a role in one's impression of weather. In direct sunlight, the heat's impact can be heightened, potentially leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Children frequently underestimate the importance of resting and drinking fluids. Thirst is a symptom of advanced dehydration - hence the need to hydrate regularly, especially during protracted physical exercises.

Humidity

The average relative humidity in May in Calera is 74%.

Rainfall

In May, in Calera, the rain falls for 12.4 days. Throughout May, 1.77" (45mm) of precipitation is accumulated. Throughout the year, in Calera, Alabama, there are 148.8 rainfall days, and 23.11" (587mm) of precipitation is accumulated.

Snowfall

In Calera, snow does not fall in March through November.

Daylight

The average length of the day in May is 13h and 53min.
On the first day of the month, sunrise is at 5:58 am and sunset at 7:29 pm. On the last day of May, sunrise is at 5:39 am and sunset at 7:50 pm CDT.

Sunshine

In Calera, Alabama, the average sunshine in May is 10.2h.

UV index

The average daily maximum UV index in May is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A maximum UV index of 6 in May translates into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Attempt to stay under shade and limit exposure to the Sun between 10 a.m. and 4 p.m., when UV radiation is at its peak. Remember, devices such as parasols or canopies might not provide complete sun protection. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
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Frequently asked questions

What is the average May temperature in Calera?

The average high-temperature and low-temperature in Calera during May are 81.5°F (27.5°C) and 60.8°F (16°C) respectively. In May, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is calculated to be 86°F (30°C).

What is the average humidity in May in Calera?

In May, the average relative humidity in Calera is 74%.

How much does it rain in Calera in May?

In Calera, Alabama, in May, it is raining for 12.4 days, with typically 1.77" (45mm) of accumulated precipitation.

When it does not snow in Calera?

March through November are months without snowfall in Calera, Alabama.

How many hours of daylight does Calera have in May?

In Calera, the average day length in May is 13h and 53min.

When are sunrise and sunset in May in Calera?

On the first day of May in Calera, Alabama, sunrise is at 5:58 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 5:39 am and sunset at 7:50 pm CDT.

How many hours of sunshine does Calera have in May?

In May, the average sunshine duration in Calera is 10.2h.

What is the UV index reading in May in Calera?

The average daily maximum UV index in May in Calera is 6. A UV Index reading of 6 to 7 represents a high hazard to health from unsafe 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
Calera, AL

Average temperature in May - Calera, AL
  • Average high temperature in May: 81.5°F

The warmest month (with the highest average high temperature) is July (90.3°F).
The month with the lowest average high temperature is January (51.4°F).

  • Average low temperature in May: 60.8°F

The month with the highest average low temperature is August (71.2°F).
The coldest month (with the lowest average low temperature) is January (36.3°F).

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Average pressure in May
Calera, AL

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

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

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Average wind speed in May
Calera, AL

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

The windiest months (with the highest average wind speed) are January, February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).

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Average humidity in May
Calera, AL

Average humidity in May - Calera, AL
  • Average humidity in May: 74%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in May
Calera, AL

Average rainfall in May - Calera, AL
  • Average rainfall in May: 1.77"

The wettest month (with the highest rainfall) is August (2.52").
The driest months (with the least rainfall) are September and October (1.26").

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Average rainfall days in May
Calera, AL

Average rainfall days in May - Calera, AL
  • Average rainfall days in May: 12.4 days

The month with the highest number of rainy days is July (19.7 days).
The month with the least rainy days is November (6.7 days).

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Average snowfall in May
Calera, AL

Average snowfall in May - Calera, AL
  • Average snowfall in May: 0"

The month with the highest snowfall is December (0.47").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Calera, AL

Average snowfall days in May - Calera, AL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Calera, AL

Average daylight in May / Average sunshine in May - Calera, 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 1min

The months with the most sunshine are June and July (Average sunshine: 10h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).

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Average sunshine days in May
Calera, AL

Average sunshine days in May - Calera, AL
  • Average sunshine days in May: 16.3 days

The month with the most sunshine days is November (21.9 days).
The month with the least sunshine days is July (9 days).

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Average UV index in May
Calera, AL

Average UV index in May - Calera, AL
  • Average UV index in May: 6

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in May
Calera, AL

Average cloud cover in May - Calera, AL
  • Average cloud cover in May: 32

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in May
Calera, AL

Average visibility in May - Calera, 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).

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Calera, Alabama, USA

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