May weather forecast
Bartonville, IL

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Weather in May

The last month of the spring, May, is a pleasant month in Bartonville, Illinois, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 55°F (12.8°C).

Temperature

In May, the meteorological conditions change with the average high-temperature moving from an enjoyable 60.8°F (16°C) in April to an agreeable 71.6°F (22°C). Throughout May, Bartonville registers a consistent average low-temperature of 55°F (12.8°C).

Humidity

The average relative humidity in May is 78%.

Rainfall

May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 2.64" (67mm) of precipitation.

Snowfall

In Bartonville, snow does not fall in May through September.

Daylight

In Bartonville, the average length of the day in May is 14h and 28min.
On the first day of the month, sunrise is at 5:56 am and sunset at 7:55 pm. On the last day of May, sunrise is at 5:29 am and sunset at 8:23 pm CDT.

Sunshine

The average sunshine in May is 9.1h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index of 5 in May interprets into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly.

Frequently asked questions

What is the temperature in May?

May temperatures vary between a high-temperature of 71.6°F (22°C) and a low-temperature of 55°F (12.8°C).

What is the average humidity in May?

In May, the average relative humidity is 78%.

What is the rainiest month in Bartonville?

The month with the most rainfall is May, when the rain falls for 16.8 days and typically aggregates up to 2.64" (67mm) of precipitation.

How much does it rain in May?

In Bartonville, during May, the rain falls for 16.8 days and regularly aggregates up to 2.64" (67mm) of precipitation.

When it does not snow?

In Bartonville, snow does not fall in May through September.

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 Bartonville have in May?

The average day length in May is 14h and 28min.

What time are sunrise and sunset in May?

On the first day of May, sunrise is at 5:56 am and sunset at 7:55 pm. On the last day of the month, sunrise is at 5:29 am and sunset at 8:23 pm CDT.

How long on average sun shines in May?

In Bartonville, the average sunshine duration in May is 9.1h.

What is the UV index intensity in May?

In Bartonville, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
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
Bartonville, IL

Average temperature in May - Bartonville, IL
  • Average high temperature in May: 71.6°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (30.7°F).

  • Average low temperature in May: 55°F

The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

Average pressure in May
Bartonville, IL

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

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Bartonville, IL

Average wind speed in May - Bartonville, IL
  • Average wind speed in May: 8.8mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

Average humidity in May
Bartonville, IL

Average humidity in May - Bartonville, IL
  • Average humidity in May: 78%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Bartonville, IL

Average rainfall in May - Bartonville, IL
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is May (2.64").
The driest month (with the least rainfall) is January (0.75").

Average rainfall days in May
Bartonville, IL

Average rainfall days in May - Bartonville, IL
  • Average rainfall days in May: 16.8 days

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (4.6 days).

Average snowfall in May
Bartonville, IL

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

The month with the highest snowfall is January (2.36").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Bartonville, IL

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

The month with the highest number of snowfall days is January (9 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
Bartonville, IL

Average daylight in May / Average sunshine in May - Bartonville, IL
  • Average daylight in May: 14h and 3min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in May: 9h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

Average sunshine days in May
Bartonville, IL

Average sunshine days in May - Bartonville, IL
  • Average sunshine days in May: 11.3 days

The month with the most sunshine days is November (19.8 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in May
Bartonville, IL

Average UV index in May - Bartonville, IL
  • Average UV index in May: 5

The months with the highest UV index are 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
Bartonville, IL

Average cloud cover in May - Bartonville, IL
  • Average cloud cover in May: 39

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).

Average visibility in May
Bartonville, IL

Average visibility in May - Bartonville, IL
  • Average visibility in May: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

Bartonville, Illinois, USA

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