May weather forecastFlat Rock, AL
May
Weather in May
The last month of the spring, May, is a warm month in Flat Rock, Alabama, with an average temperature varying between 77.5°F (25.3°C) and 57.2°F (14°C).Temperature
The beginning of May signals a minor rise in the average high-temperature, moving from a pleasant 69.8°F (21°C) in April to a warm 77.5°F (25.3°C). Throughout the month of May, Flat Rock sees a steady low-temperature average of 57.2°F (14°C).Humidity
In Flat Rock, the average relative humidity in May is 78%.Rainfall
In May, the rain falls for 17.7 days. Throughout May, 4.37" (111mm) of precipitation is accumulated. In Flat Rock, during the entire year, the rain falls for 191.1 days and collects up to 48.94" (1243mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in May is 14h and 0min.On the first day of May, sunrise is at 5:51 am and sunset at 7:28 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 7:50 pm CDT.
Sunshine
In May, the average sunshine 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 reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 6 in May leads to these guidelines:
Persist in precautions and follow sun safety policies. Keeping sunburn at bay is imperative. 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. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Flat Rock, AL
- Average high temperature in May: 77.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (46.8°F).
- Average low temperature in May: 57.2°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (31.8°F).
Average pressure in May
Flat Rock, AL
- Average pressure in May: 30.02"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
Flat Rock, AL
- Average wind speed in May: 5.6mph
The windiest month (with the highest average wind speed) is February (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.3mph).
Average humidity in May
Flat Rock, AL
- Average humidity in May: 78%
The month with the highest relative humidity is December (81%).
The month with the lowest relative humidity is October (75%).
Average rainfall in May
Flat Rock, AL
- Average rainfall in May: 4.37"
The wettest month (with the highest rainfall) is July (5.24").
The driest month (with the least rainfall) is November (2.76").
Average rainfall days in May
Flat Rock, AL
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is July (22.4 days).
The month with the least rainy days is November (10.3 days).
Average snowfall in May
Flat Rock, AL
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.02").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Flat Rock, AL
- Average snowfall days in May: 0 days
The months with the highest number of snowfall days are January and February (2.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Flat Rock, AL
- Average daylight in May: 14h and 0min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in May: 9h and 36min
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 36min).
Average sunshine days in May
Flat Rock, AL
- Average sunshine days in May: 11 days
The month with the most sunshine days is October (18.3 days).
The month with the least sunshine days is July (7 days).
Average UV index in May
Flat Rock, 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
Flat Rock, AL
- Average cloud cover in May: 37
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
Flat Rock, AL
- Average visibility in May: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
