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 beginning of May marks a shift in the average high-temperature, moving from April's refreshing 66°F (18.9°C) to a moderately hot 75.2°F (24°C). During the month of May, an average low-temperature of 58.3°F (14.6°C) is recorded in Herald.Humidity
May and July, with an average relative humidity of 79%, are the most humid months.Rainfall
In Herald, in May, it is raining for 11.9 days, with typically 0.98" (25mm) of accumulated precipitation. In Herald, during the entire year, the rain falls for 100.2 days and collects up to 8.7" (221mm) of precipitation.Snowfall
In Herald, snow does not fall in April through October.Daylight
In Herald, the average length of the day in May is 14h and 14min.On the first day of May in Herald, Illinois, sunrise is at 5:55 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:09 pm CDT.
Sunshine
In Herald, the average sunshine in May is 9.2h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Herald. A UV Index of 6 to 7 symbolizes a high health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 6 in May interprets into the following recommendations:
Skirt overexposure. People with light complexions might get scorched in under 20 minutes. The Sun emits the most powerful UV radiation between 10 a.m. and 4 p.m. Try to avoid direct sunlight during this period. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Frequently asked questions
What are the temperatures in Herald in May?
What are the most humid months in Herald?
What is the average humidity in May in Herald?
How much does it rain in Herald in May?
When it does not snow in Herald?
What is the average length of the day in May in Herald?
What time are sunrise and sunset in May in Herald?
How long on average sun shines in May in Herald?
When is the highest UV index in Herald?
What is the UV index intensity in May in Herald?
Average temperature in May
Herald, IL
- Average high temperature in May: 75.2°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in May: 58.3°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in May
Herald, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Herald, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Herald, IL
- Average humidity in May: 79%
The months with the highest relative humidity are May and July (79%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Herald, IL
- Average rainfall in May: 0.98"
The wettest month (with the highest rainfall) is April (1.06").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in May
Herald, IL
- Average rainfall days in May: 11.9 days
The month with the highest number of rainy days is May (11.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in May
Herald, IL
- Average snowfall in May: 0"
The months with the highest snowfall are January and February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Herald, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (3.3 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
Herald, IL
- Average daylight in May: 14h and 1min
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 36min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Herald, IL
- Average sunshine days in May: 15.8 days
The month with the most sunshine days is October (23.4 days).
The month with the least sunshine days is May (15.8 days).
Average UV index in May
Herald, 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
Herald, IL
- Average cloud cover in May: 38
The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 27).
Average visibility in May
Herald, 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).
Herald, Illinois, USA
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