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
With the arrival of May, the average high-temperature transitions from an enjoyable 62.8°F (17.1°C) in April to a pleasant 73°F (22.8°C). May brings Casey a consistent average low-temperature of 56.7°F (13.7°C).Humidity
In May, the average relative humidity in Casey, Illinois, is 80%.Rainfall
In Casey, in May, it is raining for 14.9 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, in Casey, there are 115.9 rainfall days, and 11.26" (286mm) of precipitation is accumulated.Snowfall
In Casey, snow does not fall in May through October.Daylight
In Casey, the average length of the day in May is 14h and 21min.On the first day of May in Casey, sunrise is at 5:52 am and sunset at 7:45 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:12 pm CDT.
Sunshine
In May, the average sunshine in Casey is 8.9h.UV index
The average daily maximum UV index in May in Casey is 5. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The average daily UV index of 5 in May transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage.
Frequently asked questions
What are the temperatures in Casey in May?
What is the average humidity in May in Casey?
How much does it rain in Casey in May?
When it does not snow in Casey?
Does it snow in Casey in May?
How many hours of daylight does Casey have in May?
When are sunrise and sunset in May in Casey?
How many hours of sunshine does Casey have in May?
How high is the UV index in May in Casey?
Average temperature in May
Casey, IL
- Average high temperature in May: 73°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (34.7°F).
- Average low temperature in May: 56.7°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (22.6°F).
Average pressure in May
Casey, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Casey, IL
- Average wind speed in May: 8.4mph
The windiest months (with the highest average wind speed) are January and February (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in May
Casey, IL
- Average humidity in May: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Casey, IL
- Average rainfall in May: 1.34"
The wettest month (with the highest rainfall) is April (1.54").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in May
Casey, IL
- Average rainfall days in May: 14.9 days
The month with the highest number of rainy days is May (14.9 days).
The month with the least rainy days is February (6 days).
Average snowfall in May
Casey, IL
- Average snowfall in May: 0"
The month with the highest snowfall is December (0.47").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Casey, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Casey, IL
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Casey, IL
- Average sunshine days in May: 12.4 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.4 days).
Average UV index in May
Casey, IL
- Average UV index in May: 5
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).
Average cloud cover in May
Casey, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility in May
Casey, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Casey, Illinois, USA
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