May weather forecast
Macomb, IL

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Weather in May

May, the last month of the spring in Macomb, is a pleasant month, with an average temperature fluctuating between 71.6°F (22°C) and 54.9°F (12.7°C).

Temperature

In May, the meteorological conditions change with the average high-temperature moving from a comfortable 61.3°F (16.3°C) in April to an agreeable 71.6°F (22°C). Nighttime temperatures hover around an average low of 54.9°F (12.7°C) in May.

Humidity

The average relative humidity in May is 79%.

Rainfall

May is the month with the most rainfall in Macomb. Rain falls for 16.2 days and accumulates 2.56" (65mm) of precipitation.

Snowfall

May through September are months without snowfall in Macomb.

Daylight

In Macomb, the average length of the day in May is 14h and 27min.
On the first day of the month, sunrise is at 6:00 am and sunset at 7:58 pm. On the last day of May, in Macomb, sunrise is at 5:34 am and sunset at 8:26 pm CDT.

Sunshine

The average sunshine in May in Macomb is 8.9h.

UV index

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the average person.
Note: The daily high UV index of 5 during May translates into the following recommendations:
Take precautions - Protection against sunburn is recommended. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Stay sun-safe with clothing that is both closely woven and worn loosely.
Resources | Updated: Feb 12, 2024 | Published by: Weather U.S.

Frequently asked questions

What are the temperatures in Macomb in May?

Macomb in May has an average high-temperature of 71.6°F (22°C) and an average low-temperature of 54.9°F (12.7°C).

What is the average humidity in May in Macomb?

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

What is the wettest month in Macomb?

The month with the most rainfall is May, when the rain falls for 16.2 days and typically aggregates up to 2.56" (65mm) of precipitation.

How much does it rain in Macomb in May?

In Macomb, during May, the rain falls for 16.2 days and regularly aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in Macomb?

May through September are months without snowfall in Macomb, Illinois.

Does it snow in Macomb in May?

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

How many hours of daylight does Macomb have in May?

In Macomb, Illinois, the average day length in May is 14h and 27min.

When are sunrise and sunset in May in Macomb?

On the first day of May, sunrise is at 6:00 am and sunset at 7:58 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:26 pm CDT.

How many hours of sunshine does Macomb have in May?

The average sunshine duration in May in Macomb, Illinois, is 8.9h.

What is the UV index intensity in May in Macomb?

In Macomb, 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 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
Macomb, IL

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

The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (30.9°F).

  • Average low temperature in May: 54.9°F

The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19°F).

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Average pressure in May
Macomb, IL

Average pressure in May - Macomb, IL
  • Average pressure in May: 29.94"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
Macomb, IL

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

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average humidity in May
Macomb, IL

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in May
Macomb, IL

Average rainfall in May - Macomb, IL
  • Average rainfall in May: 2.56"

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days in May
Macomb, IL

Average rainfall days in May - Macomb, IL
  • Average rainfall days in May: 16.2 days

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in May
Macomb, IL

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

The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Macomb, IL

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

The month with the highest number of snowfall days is January (7.6 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
Macomb, IL

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

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: 8h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days in May
Macomb, IL

Average sunshine days in May - Macomb, IL
  • Average sunshine days in May: 12.9 days

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index in May
Macomb, IL

Average UV index in May - Macomb, 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).

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Average cloud cover in May
Macomb, IL

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

The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).

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Average visibility in May
Macomb, IL

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

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

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Macomb, Illinois, USA

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