May weather forecast
Wood River, IL

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Weather in May

May, the last month of the spring in Wood River, is a warm month, with an average temperature ranging between min 57°F (13.9°C) and max 74.1°F (23.4°C).

Temperature

Wood River sees a rise in temperature during May, with average high-temperatures transitioning from a comfortable 64.4°F (18°C) in April to a moderately hot 74.1°F (23.4°C). During May, the average low-temperature is a refreshing 57°F (13.9°C).

Humidity

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

Rainfall

The month with the most rainfall is May, when the rain falls for 16.6 days and typically aggregates up to 3.07" (78mm) of precipitation.

Snowfall

In Wood River, snow does not fall in May through October.

Daylight

In Wood River, the average length of the day in May is 14h and 19min.
On the first day of May, sunrise is at 6:01 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm CDT.

Sunshine

In May, the average sunshine is 9.3h.

UV index

May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A daily maximum UV index of 6 in May translates into the following instructions:
Adhere to precautions and respect sun safety doctrines. Avoiding sunburn is vital. Avoid direct Sun exposure and seek shade between 10 a.m. and 4 p.m., when UV radiation is at its peak, but keep in mind that not all shade structures provide complete protection. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes.

Frequently asked questions

What are May temperatures?

In Wood River, in May, the average high-temperature is 74.1°F (23.4°C), and the average low-temperature is 57°F (13.9°C).

What is the average humidity in May?

In May, the average relative humidity is 79%.

What is the wettest month?

The month with the most rainfall is May, when the rain falls for 16.6 days and typically aggregates up to 3.07" (78mm) of precipitation.

How much does it rain in May?

In Wood River, during May, the rain falls for 16.6 days and regularly aggregates up to 3.07" (78mm) of precipitation.

When it does not snow?

In Wood River, snow does not fall in May through October.

Does it snow 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 May, the average day length in Wood River is 14h and 19min.

What time are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 6:01 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:37 am and sunset at 8:19 pm CDT.

How long on average sun shines in May?

In Wood River, the average sunshine duration in May is 9.3h.

What are the months with the highest UV index in Wood River?

The months with the highest UV index in Wood River, Illinois, are May through August, with an average maximum UV index of 6.

What is the UV index reading in May?

In May, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health threat 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
Wood River, IL

Average temperature in May - Wood River, IL
  • Average high temperature in May: 74.1°F

The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).

  • Average low temperature in May: 57°F

The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in May
Wood River, IL

Average pressure in May - Wood River, IL
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed in May
Wood River, IL

Average wind speed in May - Wood River, IL
  • Average wind speed in May: 7.6mph

The windiest months (with the highest average wind speed) are January and February (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).

Average humidity in May
Wood River, IL

Average humidity in May - Wood River, IL
  • Average humidity in May: 79%

The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Wood River, IL

Average rainfall in May - Wood River, IL
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is February (1.14").

Average rainfall days in May
Wood River, IL

Average rainfall days in May - Wood River, IL
  • Average rainfall days in May: 16.6 days

The month with the highest number of rainy days is May (16.6 days).
The month with the least rainy days is January (5.6 days).

Average snowfall in May
Wood River, IL

Average snowfall in May - Wood River, IL
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Wood River, IL

Average snowfall days in May - Wood River, IL
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Wood River, IL

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

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in May: 9h and 2min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).

Average sunshine days in May
Wood River, IL

Average sunshine days in May - Wood River, IL
  • Average sunshine days in May: 12.5 days

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is July (12.3 days).

Average UV index in May
Wood River, IL

Average UV index in May - Wood River, IL
  • Average UV index in May: 6

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

Average cloud cover in May
Wood River, IL

Average cloud cover in May - Wood River, IL
  • Average cloud cover in May: 38

The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June, July and August (Cloud cover 29).

Average visibility in May
Wood River, IL

Average visibility in May - Wood River, 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).

Wood River, Illinois, USA

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