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
The arrival of May signals an increase in the average high-temperature, moving from a moderate 58.8°F (14.9°C) in April to an agreeable 70.5°F (21.4°C). During May, the temperature is averaged to a low of 53.6°F (12°C) at night.Humidity
The average relative humidity in May is 77%.Rainfall
May is the month with the most rainfall. Rain falls for 18.5 days and accumulates 4.65" (118mm) of precipitation.Snowfall
In Dalzell, snow does not fall in May through September.Daylight
In May, the average length of the day is 14h and 32min.On the first day of the month, sunrise is at 5:52 am and sunset at 7:54 pm. On the last day of May, in Dalzell, sunrise is at 5:25 am and sunset at 8:23 pm CDT.
Sunshine
In Dalzell, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the ordinary person.Note: An average UV index of 5 in May transforms into this advice:
Undertake precautions - It is suggested to shield oneself from sunburn. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature in Dalzell?
What is the average humidity in May in Dalzell?
What is the rainiest month in Dalzell?
How many days does it rain in May in Dalzell?
When it does not snow in Dalzell?
Does it snow in Dalzell in May?
What is the average length of the day in May in Dalzell?
When is the sunrise / sunset in May in Dalzell?
How long on average sun shines in May in Dalzell?
What is the UV index intensity in May in Dalzell?
Average temperature in May
Dalzell, IL
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in May: 53.6°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in May
Dalzell, IL
- Average pressure in May: 29.96"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
Dalzell, IL
- Average wind speed in May: 8.8mph
The windiest months (with the highest average wind speed) are January and April (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Dalzell, 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
Dalzell, IL
- Average rainfall in May: 4.65"
The wettest month (with the highest rainfall) is May (4.65").
The driest month (with the least rainfall) is February (1.57").
Average rainfall days in May
Dalzell, IL
- Average rainfall days in May: 18.5 days
The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is January (5.5 days).
Average snowfall in May
Dalzell, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (4.37").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Dalzell, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (12.1 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
Dalzell, 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 June (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Dalzell, IL
- Average sunshine days in May: 10.4 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in May
Dalzell, 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).
Average cloud cover in May
Dalzell, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in May
Dalzell, 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).
Dalzell, Illinois, USA
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