Weathermondo.com
United StatesThe weather in May in Alton
It's hot in May in Alton with an average temperature of 30°C. Temperatures this month range from a low of 27°C to a high of 32°C. At night, you can expect temperatures between 14°C and 23°C.
Looking for sun? May isn’t a good month to be in Alton. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in May for Alton, Louisiana. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 35°C in 2018, Alton reached the highest temperature in May over the past 10 years. The lowest daytime temperature in this month was 20°C in 2017. The extreme nighttime temperatures ranged from a lowest recorded value of 8°C to a highest value of 27°C.
Rainfall amount
In May, there is an average of 220 mm of precipitation, spread over 22 days. The wind speed is around 4 Bft, mostly coming from the South.
Daily weather in May for Alton
Click on any day in May to get detailed info about the usual weather on that day in Alton. Check out the historical temperatures and precipitation over the past 10 years on this day.
May weather comparison
| Alton | New York | |
|---|---|---|
| Average temperature | 30°C | 22°C |
| Max. temperature | 32°C | 28°C |
| Min. temperature | 14°C | -5°C |
| Total precipitation | 220 mm | 105 mm |
| Rainy days | 22 days | 14 days |
Start of May
The month of May starts in Alton with hot temps, averaging around 29°C during the day and nights around 17°C.
Mid May
By mid-May, daytime temps rise to around 31°C, with nights around 21°C. There’s a high chance of precipitation during this time.
End of May
By the end of May, the average daytime temperature in Alton is around 31°C, while nighttime temps are about 21°C. There’s a significant chance of many days with precipitation.
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UV index
The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.
The hurricane season in Alton runs from June to November.
Check out the climate of Alton for all months and discover the best travel time
Temperature charts
These charts show the average temperatures in May in Alton, Louisiana. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in May in Alton
Temperature in May in Alton over the years
Precipitation charts
These charts show the average amount of precipitation in May in Alton, Louisiana. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in May in Alton
Total precipitation in May in Alton over the years
Daily UV index in May in Alton
This chart shows the average daily UV index in May in Alton, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in May in Alton
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Average weather in Alton by month
Click on a month below to see detailed weather info for Alton. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.