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
As April gives way to May, the average high-temperature displays an increase, moving from a mild 59.7°F (15.4°C) to an agreeable 71.2°F (21.8°C). Pontiac reports an average nighttime low-temperature of 54.7°F (12.6°C) in May.Humidity
In May, the average relative humidity in Pontiac is 76%.Rainfall
May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 2.44" (62mm) of precipitation.Snowfall
In Pontiac, snow does not fall in May through September.Daylight
In Pontiac, Illinois, the average length of the day in May is 14h and 29min.On the first day of May in Pontiac, Illinois, sunrise is at 5:51 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:19 pm CDT.
Sunshine
The average sunshine in May is 8.9h.UV index
In Pontiac, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for average individuals.Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days.
Frequently asked questions
What is the temperature in May in Pontiac?
What is the average humidity in May in Pontiac?
What is the rainiest month in Pontiac?
How much does it rain in Pontiac in May?
When it does not snow in Pontiac?
Does it snow in Pontiac in May?
What is the average length of the day in May in Pontiac?
When is the sunrise / sunset in May in Pontiac?
How many hours of sunshine does Pontiac have in May?
What is the UV index intensity in May in Pontiac?
Average temperature in May
Pontiac, IL
- Average high temperature in May: 71.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in May: 54.7°F
The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in May
Pontiac, 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 (29.92"Hg).
Average wind speed in May
Pontiac, IL
- Average wind speed in May: 9mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Pontiac, 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 (71%).
Average rainfall in May
Pontiac, IL
- Average rainfall in May: 2.44"
The wettest month (with the highest rainfall) is May (2.44").
The driest months (with the least rainfall) are January and February (0.71").
Average rainfall days in May
Pontiac, IL
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.3 days).
Average snowfall in May
Pontiac, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Pontiac, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.2 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
Pontiac, 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 18min).
- Average sunshine in May: 8h and 5min
The months with the most sunshine are June and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Pontiac, IL
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in May
Pontiac, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Pontiac, IL
- Average cloud cover in May: 41
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
Pontiac, 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).
Pontiac, Illinois, USA
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