May weather forecast
Serena, IL

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Weather in May

May, the last month of the spring in Serena, is an agreeable month, with an average temperature ranging between max 70.3°F (21.3°C) and min 53.1°F (11.7°C).

Temperature

An increase in the average high-temperature marks May, moving from April's moderate 58.5°F (14.7°C) to an agreeable 70.3°F (21.3°C). An average low-temperature of 53.1°F (11.7°C) is noted during the month of May.

Humidity

In May, the average relative humidity in Serena is 77%.

Rainfall

May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 1.14" (29mm) of precipitation.

Snowfall

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

Daylight

The average length of the day in May in Serena, Illinois, is 14h and 32min.
On the first day of the month, sunrise is at 5:50 am and sunset at 7:53 pm. On the last day of May, in Serena, sunrise is at 5:23 am and sunset at 8:21 pm CDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for average individuals.
Note: In May, a regular UV index of 5 translates into these guidelines:
Exercise prevention - Protecting skin and eyes from harm is required. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
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Frequently asked questions

What are the temperatures in Serena in May?

The high-temperature, in May, in Serena, records 70.3°F (21.3°C), while the low-temperature is 53.1°F (11.7°C).

What is the average humidity in May in Serena?

In Serena, the average relative humidity in May is 77%.

What is the wettest month in Serena?

May is the month with the most rainfall. Rain falls for 13.5 days and accumulates 1.14" (29mm) of precipitation.

How many days does it rain in May in Serena?

In May, in Serena, the rain falls for 13.5 days. Throughout May, 1.14" (29mm) of precipitation is accumulated.

When it does not snow in Serena?

May through September are months without snowfall in Serena.

Does it snow in Serena in May?

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

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

The average day length in May in Serena is 14h and 32min.

When is the sunrise / sunset in May in Serena?

In May, on the first day of the month, sunrise is at 5:50 am and sunset at 7:53 pm. On the last day of the month, in Serena, sunrise is at 5:23 am and sunset at 8:21 pm CDT.

How long on average sun shines in May in Serena?

The average sunshine duration in May in Serena, Illinois, is 8.6h.

What is the UV index reading in May in Serena?

In May, the average daily maximum UV index in Serena is 5. A UV Index of 3 to 5 symbolizes a medium health risk 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
Serena, IL

Average temperature in May - Serena, IL
  • Average high temperature in May: 70.3°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in May: 53.1°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).

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Average pressure in May
Serena, IL

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

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Serena, IL

Average wind speed in May - Serena, IL
  • Average wind speed in May: 8.5mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is August (6mph).

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Average humidity in May
Serena, IL

Average humidity in May - Serena, 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 (73%).

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Average rainfall in May
Serena, IL

Average rainfall in May - Serena, IL
  • Average rainfall in May: 1.14"

The wettest month (with the highest rainfall) is May (1.14").
The driest month (with the least rainfall) is November (0.35").

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Average rainfall days in May
Serena, IL

Average rainfall days in May - Serena, IL
  • Average rainfall days in May: 13.5 days

The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3 days).

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Average snowfall in May
Serena, IL

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

The month with the highest snowfall is January (0.98").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in May
Serena, IL

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

The month with the highest number of snowfall days is January (8.3 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
Serena, IL

Average daylight in May / Average sunshine in May - Serena, IL
  • Average daylight in May: 14h and 3min

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

  • Average sunshine in May: 8h and 4min

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

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Average sunshine days in May
Serena, IL

Average sunshine days in May - Serena, IL
  • Average sunshine days in May: 14.7 days

The month with the most sunshine days is December (23 days).
The month with the least sunshine days is May (14.7 days).

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Average UV index in May
Serena, IL

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

The months with the highest UV index are June and July (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
Serena, IL

Average cloud cover in May - Serena, IL
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 33).

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Average visibility in May
Serena, IL

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

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

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Serena, Illinois, USA

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