Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May brings a temperature increase, with average high-temperatures moving from April's mild 59.4°F (15.2°C) to an agreeable 71.1°F (21.7°C). During the month of May, the temperature generally drops to a low average of 54°F (12.2°C).Humidity
The average relative humidity in May is 77%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.4 days and typically aggregates up to 4.41" (112mm) of precipitation.Snowfall
In Henry, snow does not fall in May through September.Daylight
In May, the average length of the day is 14h and 30min.On the first day of May, sunrise is at 5:54 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:23 pm CDT.
Sunshine
In May, the average sunshine is 8.8h.UV index
In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Take precautions. Light skin individuals may get burned in less than 30 minutes. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Henry in May?
What is the average humidity in May?
What is the wettest month in Henry?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
How many hours of daylight does Henry have in May?
When are sunrise and sunset in May?
How many hours of sunshine does Henry have in May?
What is the UV index reading in May?
Average temperature in May
Henry, IL
- Average high temperature in May: 71.1°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in May: 54°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (17.4°F).
Average pressure in May
Henry, IL
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Henry, IL
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in May
Henry, 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 (72%).
Average rainfall in May
Henry, IL
- Average rainfall in May: 4.41"
The wettest month (with the highest rainfall) is May (4.41").
The driest months (with the least rainfall) are January and December (1.57").
Average rainfall days in May
Henry, IL
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is May (18.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in May
Henry, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Henry, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (11.2 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
Henry, 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 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Henry, IL
- Average sunshine days in May: 10.7 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in May
Henry, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Henry, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in May
Henry, IL
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Henry, Illinois, USA
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