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 onset of May, Marengo's average high-temperature experiences a rise, moving from April's 55.6°F (13.1°C) to a still refreshing 67.6°F (19.8°C). In the month of May, Marengo records a consistent average low-temperature of 50.2°F (10.1°C).Humidity
In May, the average relative humidity is 79%.Rainfall
In Marengo, in May, it is raining for 18.8 days, with typically 3.74" (95mm) of accumulated precipitation. Throughout the year, there are 154.6 rainfall days, and 30.31" (770mm) of precipitation is accumulated.Snowfall
In Marengo, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 37min.On the first day of May, sunrise is at 5:48 am and sunset at 7:54 pm. On the last day of the month, sunrise is at 5:20 am and sunset at 8:23 pm CDT.
Sunshine
The average sunshine in May is 8.5h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 5 in May, converts into the following recommendations:
Undertake precautions - Obligation exists to protect against skin and eye damage. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Marengo in May?
What is the average humidity in May?
How many days does it rain in May?
When it does not snow?
Does it snow in May?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Marengo have in May?
What is the month with the highest UV index?
What is the UV index intensity in May in Marengo?
Average temperature in May
Marengo, IL
- Average high temperature in May: 67.6°F
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in May: 50.2°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in May
Marengo, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Marengo, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in May
Marengo, IL
- Average humidity in May: 79%
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (76%).
Average rainfall in May
Marengo, IL
- Average rainfall in May: 3.74"
The wettest month (with the highest rainfall) is June (4.21").
The driest months (with the least rainfall) are February and November (1.5").
Average rainfall days in May
Marengo, IL
- Average rainfall days in May: 18.8 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (4.8 days).
Average snowfall in May
Marengo, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Marengo, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (12.3 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
Marengo, IL
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 3min
The month with the most sunshine is July (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in May
Marengo, IL
- Average sunshine days in May: 10.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in May
Marengo, IL
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Marengo, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 63).
The months with the least cloud cover are August and September (Cloud cover 35).
Average visibility in May
Marengo, IL
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Marengo, Illinois, USA
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