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
May's onset is marked by a subtle temperature increase, moving from an agreeable 72.1°F (22.3°C) in April to a moderately hot 79.3°F (26.3°C). Altoona's May nights cool down to an average low-temperature of 59.2°F (15.1°C).Humidity
In Altoona, the average relative humidity in May is 76%.Rainfall
In Altoona, in May, it is raining for 16.3 days, with typically 3.19" (81mm) of accumulated precipitation. In Altoona, during the entire year, the rain falls for 180.2 days and collects up to 42.24" (1073mm) of precipitation.Snowfall
In Altoona, snow does not fall in April through October.Daylight
The average length of the day in May is 13h and 56min.On the first day of the month, sunrise is at 5:55 am and sunset at 7:29 pm. On the last day of May, sunrise is at 5:35 am and sunset at 7:51 pm CDT.
Sunshine
In May, the average sunshine in Altoona is 9.6h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: In May, a daily maximum UV index of 6 leads to the following instructions:
Prevent overexposure. Protection from the sun's harmful effects is needed. Stay in the shade and limit sun exposure from 10 a.m. to 4 p.m., when UV radiation is most potent. Keep in mind that shade structures like parasols or canopies do not offer full protection. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow in Altoona?
How many hours of daylight does Altoona have in May?
What time are sunrise and sunset in May in Altoona?
How many hours of sunshine does Altoona have in May?
What is the month with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Altoona, AL
- Average high temperature in May: 79.3°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is January (49.1°F).
- Average low temperature in May: 59.2°F
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (34°F).
Average pressure in May
Altoona, 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
Altoona, AL
- Average wind speed in May: 5.8mph
The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest months (with the lowest average wind speed) are July and August (4.5mph).
Average humidity in May
Altoona, AL
- Average humidity in May: 76%
The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Altoona, AL
- Average rainfall in May: 3.19"
The wettest month (with the highest rainfall) is August (4.41").
The driest month (with the least rainfall) is October (2.4").
Average rainfall days in May
Altoona, AL
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is July (22.2 days).
The month with the least rainy days is November (10.1 days).
Average snowfall in May
Altoona, AL
- Average snowfall in May: 0"
The month with the highest snowfall is January (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Altoona, AL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Altoona, AL
- Average daylight in May: 13h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 9h and 4min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).
Average sunshine days in May
Altoona, AL
- Average sunshine days in May: 13.4 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (7.8 days).
Average UV index in May
Altoona, AL
- 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 and December (UV index 2).
Average cloud cover in May
Altoona, AL
- Average cloud cover in May: 36
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 32).
Average visibility in May
Altoona, AL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Altoona, Alabama, USA
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