May weather forecast
Stockton, IL

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Weather in May

The last month of the spring, May, is an enjoyable month in Stockton, Illinois, with temperature in the range of an average low of 50.5°F (10.3°C) and an average high of 67.6°F (19.8°C).

Temperature

Stockton experiences a temperature shift with the start of May, with average high-temperatures moving from a moderate 56.1°F (13.4°C) in April to a comfortable 67.6°F (19.8°C). During May, Stockton's temperature falls to a steady low-temperature average of 50.5°F (10.3°C).

Humidity

The average relative humidity in May is 80%.

Rainfall

The wettest months in Stockton are May and June, with an average 3.66" (93mm) of rainfall.

Snowfall

May through September are months without snowfall.

Daylight

In May, the average length of the day is 14h and 37min.
On the first day of the month, sunrise is at 5:53 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:25 am and sunset at 8:29 pm CDT.

Sunshine

In May, the average sunshine in Stockton is 8.3h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature in Stockton?

In May, the average high-temperature and low-temperature in Stockton are 67.6°F (19.8°C) and 50.5°F (10.3°C) respectively.

What is the average humidity in May in Stockton?

The average relative humidity in May is 80%.

What is the rainiest month in Stockton?

The wettest months in Stockton, Illinois, are May and June, with an average 3.66" (93mm) of rainfall.

How many days does it rain in May in Stockton?

In Stockton, Illinois, in May, during 17.8 rainfall days, 3.66" (93mm) of precipitation is typically accumulated.

When it does not snow in Stockton?

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

Does it snow in Stockton in May?

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

What is the average length of the day in May in Stockton?

The average day length in May in Stockton, Illinois, is 14h and 37min.

When is the sunrise / sunset in May in Stockton?

On the first day of May in Stockton, Illinois, sunrise is at 5:53 am and sunset at 8:00 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:29 pm CDT.

How many hours of sunshine does Stockton have in May?

The average sunshine duration in May in Stockton is 8.3h.

What is the UV index reading in May in Stockton?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate 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
Stockton, IL

Average temperature in May - Stockton, IL
  • Average high temperature in May: 67.6°F

The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (12.7°F).

Average pressure in May
Stockton, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in May
Stockton, IL

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

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity in May
Stockton, IL

Average humidity in May - Stockton, IL
  • Average humidity in May: 80%

The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (75%).

Average rainfall in May
Stockton, IL

Average rainfall in May - Stockton, IL
  • Average rainfall in May: 3.66"

The wettest months (with the highest rainfall) are May and June (3.66").
The driest months (with the least rainfall) are January and February (1.26").

Average rainfall days in May
Stockton, IL

Average rainfall days in May - Stockton, IL
  • Average rainfall days in May: 17.8 days

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (4.8 days).

Average snowfall in May
Stockton, IL

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

The month with the highest snowfall is January (4.84").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Stockton, IL

Average snowfall days in May - Stockton, IL
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Stockton, IL

Average daylight in May / Average sunshine in May - Stockton, IL
  • Average daylight in May: 14h and 4min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 8h and 2min

The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

Average sunshine days in May
Stockton, IL

Average sunshine days in May - Stockton, IL
  • Average sunshine days in May: 11.8 days

The month with the most sunshine days is November (18.2 days).
The month with the least sunshine days is June (10.2 days).

Average UV index in May
Stockton, IL

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

The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

Average cloud cover in May
Stockton, IL

Average cloud cover in May - Stockton, IL
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 33).

Average visibility in May
Stockton, IL

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

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

Stockton, Illinois, USA

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