May weather forecast
Edwardsville, IL

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Weather in May

The last month of the spring, May, is a warm month in Edwardsville, Illinois, with an average temperature fluctuating between 74.1°F (23.4°C) and 57°F (13.9°C).

Temperature

An escalation in the average high-temperature is seen with the onset of May, moving from a refreshing 64.4°F (18°C) in April to a warm 74.1°F (23.4°C). During May, an average low-temperature of 57°F (13.9°C) is observed.

Humidity

In Edwardsville, the average relative humidity in May is 79%.

Rainfall

The month with the most rainfall is May, when the rain falls for 16.6 days and typically aggregates up to 3.07" (78mm) of precipitation.

Snowfall

In Edwardsville, snow does not fall in May through October.

Daylight

The average length of the day in May is 14h and 19min.
On the first day of the month, sunrise is at 6:01 am and sunset at 7:52 pm. On the last day of May, sunrise is at 5:36 am and sunset at 8:18 pm CDT.

Sunshine

In May, the average sunshine is 9.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 6 in May transforms into the following instructions:
Elude overexposure. Fair-skinned people could get burnt in less than 20 minutes. It's important to stay in the shade and limit exposure to the sun from 10 a.m. to 4 p.m., when UV radiation is most intense, although remember that shade structures may not provide full sun protection. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
Updated: Aug 28, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The high-temperature, in May, in Edwardsville, is 74.1°F (23.4°C), while the low-temperature averages to 57°F (13.9°C).

What is the average humidity in May?

In May, the average relative humidity in Edwardsville is 79%.

What is the rainiest month?

May is the month with the most rainfall. Rain falls for 16.6 days and accumulates 3.07" (78mm) of precipitation.

How much does it rain in Edwardsville in May?

In Edwardsville, Illinois, in May, during 16.6 rainfall days, 3.07" (78mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

Does it snow in May?

In May, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does Edwardsville have in May?

The average day length in May in Edwardsville is 14h and 19min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:01 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 8:18 pm CDT.

How long on average sun shines in May?

The average sunshine duration in May is 9.3h.

When is the highest UV index?

The months with the highest UV index are May through August, with an average maximum UV index of 6.

What is the UV index intensity in May?

In May, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health threat 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
Edwardsville, IL

Average temperature in May - Edwardsville, IL
  • Average high temperature in May: 74.1°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in May: 57°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in May
Edwardsville, IL

Average pressure in May - Edwardsville, IL
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Edwardsville, IL

Average wind speed in May - Edwardsville, IL
  • Average wind speed in May: 7.6mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in May
Edwardsville, IL

Average humidity in May - Edwardsville, IL
  • Average humidity in May: 79%

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

Average rainfall in May
Edwardsville, IL

Average rainfall in May - Edwardsville, IL
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in May
Edwardsville, IL

Average rainfall days in May - Edwardsville, IL
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in May
Edwardsville, IL

Average snowfall in May - Edwardsville, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Edwardsville, IL

Average snowfall days in May - Edwardsville, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (6 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
Edwardsville, IL

Average daylight in May / Average sunshine in May - Edwardsville, IL
  • Average daylight in May: 14h and 2min

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in May
Edwardsville, IL

Average sunshine days in May - Edwardsville, IL
  • Average sunshine days in May: 12.5 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in May
Edwardsville, IL

Average UV index in May - Edwardsville, IL
  • 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, February, November and December (UV index 2).

Average cloud cover in May
Edwardsville, IL

Average cloud cover in May - Edwardsville, IL
  • Average cloud cover in May: 38

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in May
Edwardsville, IL

Average visibility in May - Edwardsville, IL
  • 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).

Edwardsville, Illinois, USA

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