May weather forecast
Evanston, IL

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Weather in May

May brings the first touch of summer to Evanston, showing a significant rise in mercury levels. With pleasant temperatures, the city entices every soul to indulge in outdoor fun, be it a picnic or a long coastal walk. High rainfall of 4.41" (112mm) becomes characteristic to this month, enlivening the greenery. Sunshine is more abundant, paving way for clearer skies and brighter days. It marks the end of the cool breeze, making people gear up for the sunny days ahead.

Temperature

The arrival of May brings a change in Evanston's weather, with average high-temperatures moving from April's chilly 49.8°F (9.9°C) to a mild 59.7°F (15.4°C). Throughout May, an average low-temperature of 49.6°F (9.8°C) is expected in Evanston.

Humidity

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

Rainfall

In Evanston, Illinois, in May, during 17.2 rainfall days, 4.41" (112mm) of precipitation is typically accumulated. In Evanston, during the entire year, the rain falls for 154.1 days and collects up to 33.31" (846mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

In Evanston, Illinois, the average length of the day in May is 14h and 35min.
On the first day of May in Evanston, sunrise is at 5:45 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:19 pm CDT.

Sunshine

In May, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in May in Evanston, Illinois, is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: A maximum daily UV index of 4 during May morphs into the following directions:
Ensure safety - Imperative it is to shield skin and eyes from damage. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.
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Frequently asked questions

What are May temperatures in Evanston?

The high-temperature, in May, in Evanston, is 59.7°F (15.4°C), while the low-temperature averages to 49.6°F (9.8°C).

What is the average humidity in May in Evanston?

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

How much does it rain in Evanston in May?

In Evanston, Illinois, in May, it is raining for 17.2 days, with typically 4.41" (112mm) of accumulated precipitation.

When it does not snow in Evanston?

May through September are months without snowfall.

Does it snow in Evanston in May?

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

How many hours of daylight does Evanston have in May?

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

What time are sunrise and sunset in May in Evanston?

On the first day of May in Evanston, Illinois, sunrise is at 5:45 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:17 am and sunset at 8:19 pm CDT.

How long on average sun shines in May in Evanston?

In May, the average sunshine duration in Evanston, Illinois, is 8.7h.

What is the UV index reading in May in Evanston?

In May, the average daily maximum UV index in Evanston, Illinois, is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
Evanston, IL

Average temperature in May - Evanston, IL
  • Average high temperature in May: 59.7°F

The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is January (29.1°F).

  • Average low temperature in May: 49.6°F

The months with the highest average low temperature are July and August (68°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure in May
Evanston, IL

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

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Evanston, IL

Average wind speed in May - Evanston, IL
  • Average wind speed in May: 9.6mph

The windiest month (with the highest average wind speed) is January (12.7mph).
The calmest months (with the lowest average wind speed) are July and August (8mph).

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Average humidity in May
Evanston, IL

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

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).

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Average rainfall in May
Evanston, IL

Average rainfall in May - Evanston, IL
  • Average rainfall in May: 4.41"

The wettest month (with the highest rainfall) is June (4.49").
The driest month (with the least rainfall) is December (1.38").

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Average rainfall days in May
Evanston, IL

Average rainfall days in May - Evanston, IL
  • Average rainfall days in May: 17.2 days

The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (5.6 days).

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Average snowfall in May
Evanston, IL

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

The month with the highest snowfall is January (3.58").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Evanston, IL

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

The month with the highest number of snowfall days is January (11.6 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
Evanston, IL

Average daylight in May / Average sunshine in May - Evanston, 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 4min

The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).

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Average sunshine days in May
Evanston, IL

Average sunshine days in May - Evanston, IL
  • Average sunshine days in May: 11.5 days

The month with the most sunshine days is December (15.3 days).
The months with the least sunshine days are June and July (10.9 days).

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Average UV index in May
Evanston, IL

Average UV index in May - Evanston, IL
  • Average UV index in May: 4

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

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Average cloud cover in May
Evanston, IL

Average cloud cover in May - Evanston, IL
  • Average cloud cover in May: 41

The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July and August (Cloud cover 27).

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Average visibility in May
Evanston, IL

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

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

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Evanston, Illinois, USA

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