Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
A soft shift in the average high-temperature is noticeable in May, transitioning from a warm 73.9°F (23.3°C) in April to a still moderately hot 81.5°F (27.5°C). In May, Helena experiences an average nighttime temperature of 61.2°F (16.2°C).Heat index
May's average heat index is appraised at a tropical 86°F (30°C). With unrelenting exposure and activity, one might experience exhaustion, leading to potential heat cramps.Heat index specifics point out values are for conditions of shade and a slight breeze. With direct sunlight, the heat index could increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', quantifies the warmth felt when relative humidity is considered. One's perception of weather can be shaped by other factors, involving metabolic differences, pregnancy, and physical exertion. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are particularly meaningful for babies and toddlers. Kids frequently ignore the importance of taking a break and rehydrating. Thirst is a late symptom of dehydration - thus, it is crucial to stay hydrated, especially during long-lasting physical activities.
Humidity
In Helena, the average relative humidity in May is 73%.Rainfall
In May, in Helena, the rain falls for 14.8 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. In Helena, during the entire year, the rain falls for 174.2 days and collects up to 40.08" (1018mm) of precipitation.Snowfall
In Helena, snow does not fall in April through October.Daylight
The average length of the day in May is 13h and 53min.On the first day of May, sunrise is at 5:58 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.
Sunshine
In Helena, the average sunshine in May is 10.2h.UV index
In May, the average daily maximum UV index is 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In May, the maximum UV index of 6 suggests this advice:
Undertake protective measures and comply with sun safety rules. Shielding against skin and eye damage is essential. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. Boost your sun resistance with garments that are densely woven yet spacious.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Helena in May?
What is the average humidity in May?
How much does it rain in Helena in May?
When it does not snow?
How many hours of daylight does Helena have in May?
When is the sunrise / sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Helena, AL
- Average high temperature in May: 81.5°F
The warmest month (with the highest average high temperature) is July (90.5°F).
The month with the lowest average high temperature is January (51.1°F).
- Average low temperature in May: 61.2°F
The month with the highest average low temperature is August (71.4°F).
The coldest month (with the lowest average low temperature) is January (36°F).
Average pressure in May
Helena, 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).
Average wind speed in May
Helena, AL
- Average wind speed in May: 5.7mph
The windiest months (with the highest average wind speed) are February and March (7.3mph).
The calmest months (with the lowest average wind speed) are July and August (4.4mph).
Average humidity in May
Helena, AL
- Average humidity in May: 73%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Helena, AL
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is April (4.09").
The driest months (with the least rainfall) are September and October (2.36").
Average rainfall days in May
Helena, AL
- Average rainfall days in May: 14.8 days
The month with the highest number of rainy days is July (21.8 days).
The month with the least rainy days is November (9.3 days).
Average snowfall in May
Helena, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Helena, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (1.2 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
Helena, 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 month with the most sunshine is June (Average sunshine: 10h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days in May
Helena, AL
- Average sunshine days in May: 14.2 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in May
Helena, AL
- Average UV index in May: 6
The month with the highest UV index is August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in May
Helena, 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).
Average visibility in May
Helena, 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).
Helena, Alabama, USA
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