May weather forecast
Downs, IL

Weather in May

The last month of the spring, May, is a pleasant month in Downs, Illinois, with average temperature ranging between max 72°F (22.2°C) and min 55.6°F (13.1°C).

Temperature

In May, the average high-temperature rises, from a comfortable 61.2°F (16.2°C) in April, to an agreeable 72°F (22.2°C). In May, the average low-temperature is 55.6°F (13.1°C).

Humidity

In Downs, the average relative humidity is 77%.

Rainfall

The month with the most rainfall in Downs is May when the rain falls for 17.5 days and typically aggregates up to 2.87" (73mm) of precipitation.

Snowfall

In Downs snow does not fall through October.

Daylight

The average length of the day in May is 14.4h.

Sunshine

In May, the average sunshine is 9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the average humidity in May in Downs?

The average relative humidity in May in Downs, Illinois, is 77%.

What is the rainiest month in Downs?

The month with the most rainfall in Downs, Illinois, is May when the rain falls for 17.5 days and typically aggregates up to 2.87" (73mm) of precipitation.

How much does it rain in Downs in May?

In Downs, in May, it is raining for 17.5 days, with typically 2.87" (73mm) of accumulated precipitation.

When it does not snow in Downs?

In Downs snow does not fall in May through October.

Does it snow in Downs in May?

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

How many hours of daylight does Downs have in May?

In Downs, Illinois, the average length of the day in May is 14.4h.

How many hours of sunshine does Downs have in May?

In Downs, Illinois, the average sunshine in May is 9h.

What is the UV index reading in May in Downs?

In Downs, Illinois, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV radiation.

Average temperature in May
Downs, IL

Average temperature in May - Downs, IL
  • Average high temperature in May: 72°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (31.3°F).

  • Average low temperature in May: 55.6°F

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).

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Average pressure in May
Downs, IL

Average pressure in May - Downs, IL
  • Average pressure in May: 29.96"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed in May
Downs, IL

Average wind speed in May - Downs, IL
  • Average wind speed in May: 9.1mph

The windiest month (with the highest average wind speed) is January (11mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity in May
Downs, IL

Average humidity in May - Downs, IL
  • Average humidity in May: 77%

The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in May
Downs, IL

Average rainfall in May - Downs, IL
  • Average rainfall in May: 2.87"

The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in May
Downs, IL

Average rainfall days in May - Downs, IL
  • Average rainfall days in May: 17.5 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is January (5.8 days).

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Average snowfall in May
Downs, IL

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

The month with the highest snowfall is January (2.8").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Downs, IL

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

The month with the highest number of snowfall days is January (9.8 days).
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
Downs, IL

Average daylight in May / Average sunshine in May - Downs, IL
  • Average daylight in May: 14.4h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in May: 9h

The month with the most sunshine is June (Average sunshine: 10.1h).
The month with the least sunshine is January (Average sunshine: 3.9h).

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Average sunshine days in May
Downs, IL

Average sunshine days in May - Downs, IL
  • Average sunshine days in May: 10.6 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.3 days).

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Average UV index in May
Downs, IL

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

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

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Average cloud cover in May
Downs, IL

Average cloud cover in May - Downs, IL
  • Average cloud cover in May: 40

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

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Average visibility in May
Downs, IL

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

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

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