May weather forecast
South Pekin, IL

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Weather in May

The last month of the spring, May, is an agreeable month in South Pekin, Illinois, with an average temperature varying between 55.2°F (12.9°C) and 72.1°F (22.3°C).

Temperature

South Pekin's transition into May brings a rise in the average high-temperature, moving from an enjoyable 61.3°F (16.3°C) in April to an agreeable 72.1°F (22.3°C). May's nights observe an average temperature of 55.2°F (12.9°C).

Humidity

In May, the average relative humidity is 77%.

Rainfall

The month with the most rainfall in South Pekin is May, when the rain falls for 18.5 days and typically aggregates up to 4.09" (104mm) of precipitation.

Snowfall

In South Pekin, snow does not fall in May through September.

Daylight

In South Pekin, the average length of the day in May is 14h and 27min.
On the first day of May in South Pekin, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:22 pm CDT.

Sunshine

The average sunshine in May in South Pekin, Illinois, is 9.1h.

UV index

In May, the average daily maximum UV index in South Pekin is 5. A UV Index of 3 to 5 symbolizes a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In May, an average UV index of 5 transforms into the following instructions:
Act with care - The need to guard against sun damage is communicated. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
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Frequently asked questions

What is the average May temperature in South Pekin?

The average high-temperature, in May, in South Pekin, is 72.1°F (22.3°C), while the average low-temperature is 55.2°F (12.9°C).

What is the average humidity in May in South Pekin?

In May, the average relative humidity is 77%.

What is the wettest month in South Pekin?

The month with the most rainfall in South Pekin, Illinois, is May, when the rain falls for 18.5 days and typically aggregates up to 4.09" (104mm) of precipitation.

How much does it rain in South Pekin in May?

In South Pekin, Illinois, in May, during 18.5 rainfall days, 4.09" (104mm) of precipitation is typically accumulated.

When it does not snow in South Pekin?

May through September are months without snowfall in South Pekin.

Does it snow in South Pekin in May?

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

What is the average length of the day in May in South Pekin?

In May, the average day length in South Pekin is 14h and 27min.

When is the sunrise / sunset in May in South Pekin?

In May, on the first day of the month, sunrise is at 5:56 am and sunset at 7:54 pm. On the last day of the month, in South Pekin, sunrise is at 5:30 am and sunset at 8:22 pm CDT.

How long on average sun shines in May in South Pekin?

In South Pekin, Illinois, the average sunshine duration in May is 9.1h.

How high is the UV index in May in South Pekin?

In May, the average daily maximum UV index in South Pekin, Illinois, is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's 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
South Pekin, IL

Average temperature in May - South Pekin, IL
  • Average high temperature in May: 72.1°F

The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in May: 55.2°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 (19°F).

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Average pressure in May
South Pekin, IL

Average pressure in May - South Pekin, 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).

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Average wind speed in May
South Pekin, IL

Average wind speed in May - South Pekin, IL
  • Average wind speed in May: 8.9mph

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).

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Average humidity in May
South Pekin, IL

Average humidity in May - South Pekin, IL
  • Average humidity in May: 77%

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

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Average rainfall in May
South Pekin, IL

Average rainfall in May - South Pekin, IL
  • Average rainfall in May: 4.09"

The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (1.54").

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Average rainfall days in May
South Pekin, IL

Average rainfall days in May - South Pekin, IL
  • Average rainfall days in May: 18.5 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is February (6.3 days).

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Average snowfall in May
South Pekin, IL

Average snowfall in May - South Pekin, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is January (3.86").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
South Pekin, IL

Average snowfall days in May - South Pekin, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in May /
Average sunshine in May
South Pekin, IL

Average daylight in May / Average sunshine in May - South Pekin, 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 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in May
South Pekin, IL

Average sunshine days in May - South Pekin, IL
  • Average sunshine days in May: 10.4 days

The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is June (10 days).

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Average UV index in May
South Pekin, IL

Average UV index in May - South Pekin, IL
  • Average UV index in May: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
South Pekin, IL

Average cloud cover in May - South Pekin, IL
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in May
South Pekin, IL

Average visibility in May - South Pekin, 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).

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South Pekin, Illinois, USA

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