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
An increase in the average high-temperature marks May, moving from April's refreshing 61.5°F (16.4°C) to an agreeable 72.7°F (22.6°C). In May, the average low-temperature is a moderate 56.3°F (13.5°C).Humidity
In May, the average relative humidity is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.3 days and typically aggregates up to 2.09" (53mm) of precipitation.Snowfall
May through October are months without snowfall.Daylight
In May, the average length of the day in Monticello, Illinois, is 14h and 25min.On the first day of May, sunrise is at 5:53 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:16 pm CDT.
Sunshine
In Monticello, the average sunshine in May is 9h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index, 5 during May, leads to the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Experience reduced UV exposure by about half when donning a wide-brim hat.
Frequently asked questions
What is the average May temperature in Monticello?
What is the average humidity in May in Monticello?
What is the rainiest month in Monticello?
How much does it rain in Monticello in May?
When it does not snow in Monticello?
Does it snow in Monticello in May?
How many hours of daylight does Monticello have in May?
When is the sunrise / sunset in May in Monticello?
How long on average sun shines in May in Monticello?
What is the UV index intensity in May in Monticello?
Average temperature in May
Monticello, IL
- Average high temperature in May: 72.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (32.4°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
Monticello, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Monticello, IL
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity in May
Monticello, IL
- Average humidity in May: 76%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Monticello, IL
- Average rainfall in May: 2.09"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in May
Monticello, IL
- Average rainfall days in May: 16.3 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Monticello, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Monticello, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.3 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
Monticello, IL
- Average daylight in May: 14h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in May
Monticello, IL
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in May
Monticello, IL
- Average UV index in May: 5
The months with the highest UV index are 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
Monticello, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are June, August and September (Cloud cover 32).
Average visibility in May
Monticello, IL
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Monticello, Illinois, USA
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