May weather forecast
Elgin, IL

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Weather in May

May in Elgin documents a significant shift in weather conditions. The arrival of spring's peak marks a farewell to the cold and mellow welcoming of the warmth. Rainfall persists albeit with reduced frequency, maintaining a stable supply of water for flora and fauna. Furthermore, longer daylight hours and reasonable visibility offer ideal conditions for outdoor exploration and activities. The impact of these changes is felt widely as people venture outdoors enjoying the blooming of flowers, clear skies and the occasional soft puddle underfoot from the spring showers.

Temperature

May's onset in Elgin is marked by a temperature increase, moving from a moderate 55.4°F (13°C) in April to an enjoyable 67.6°F (19.8°C). Elgin, during the nights of May, experiences an average temperature drop to a cool 50.5°F (10.3°C).

Humidity

The average relative humidity in May in Elgin, Illinois, is 78%.

Rainfall

In Elgin, during May, the rain falls for 17.4 days and regularly aggregates up to 2.95" (75mm) of precipitation. Throughout the year, in Elgin, there are 149.2 rainfall days, and 24.02" (610mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Elgin. During 0.1 snowfall days, in May, Elgin aggregates 0.04" (1mm) of snow. Throughout the year, there are 47.4 snowfall days, and 13.07" (332mm) of snow is accumulated.

Daylight

In May, the average length of the day in Elgin, Illinois, is 14h and 35min.
On the first day of the month, sunrise is at 5:47 am and sunset at 7:52 pm. On the last day of May, in Elgin, sunrise is at 5:19 am and sunset at 8:21 pm CDT.

Sunshine

The average sunshine in May in Elgin, Illinois, is 8.3h.

UV index

In Elgin, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for the average person.
Note: The UV index of 5 in May translates into these instructions:
Take necessary precautions - Suggestions to elude sunburn are provided. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Frequently asked questions

What are May temperatures in Elgin?

May temperatures in Elgin vary between a high-temperature of 67.6°F (19.8°C) and a low-temperature of 50.5°F (10.3°C).

What is the average humidity in May in Elgin?

The average relative humidity in May in Elgin, Illinois, is 78%.

How many days does it rain in May in Elgin?

In Elgin, during May, the rain falls for 17.4 days and regularly aggregates up to 2.95" (75mm) of precipitation.

What is the last month it snows in Elgin?

May is the last month it regularly snows in Elgin, Illinois. During 0.1 snowfall days, in May, Elgin aggregates 0.04" (1mm) of snow.

How many hours of daylight does Elgin have in May?

In Elgin, Illinois, the average day length in May is 14h and 35min.

When is the sunrise / sunset in May in Elgin?

In May, on the first day of the month, sunrise is at 5:47 am and sunset at 7:52 pm. On the last day of the month, in Elgin, Illinois, sunrise is at 5:19 am and sunset at 8:21 pm CDT.

How long on average sun shines in May in Elgin?

In Elgin, the average sunshine duration in May is 8.3h.

What is the UV index intensity in May in Elgin?

The average daily maximum UV index in May in Elgin is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Elgin, IL

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

The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in May: 50.5°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

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Average pressure in May
Elgin, IL

Average pressure in May - Elgin, IL
  • Average pressure in May: 29.96"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Elgin, IL

Average wind speed in May - Elgin, IL
  • Average wind speed in May: 8.3mph

The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).

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Average humidity in May
Elgin, IL

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

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).

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Average rainfall in May
Elgin, IL

Average rainfall in May - Elgin, IL
  • Average rainfall in May: 2.95"

The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").

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Average rainfall days in May
Elgin, IL

Average rainfall days in May - Elgin, IL
  • Average rainfall days in May: 17.4 days

The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall in May
Elgin, IL

Average snowfall in May - Elgin, IL
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Elgin, IL

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

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in May / Average sunshine in May - Elgin, 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 12min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in May
Elgin, IL

Average sunshine days in May - Elgin, IL
  • Average sunshine days in May: 10.5 days

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).

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Average UV index in May
Elgin, IL

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

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

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Average cloud cover in May
Elgin, IL

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

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).

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Average visibility in May
Elgin, IL

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

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

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Elgin, Illinois, USA

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