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, Quincy's weather sees a temperature rise, transitioning from a refreshing 62.4°F (16.9°C) in April to an agreeable 72°F (22.2°C). In Quincy, the nighttime temperature averages to a fresh 55.2°F (12.9°C) during May.Humidity
The average relative humidity in May in Quincy is 80%.Rainfall
May is the month with the most rainfall in Quincy. Rain falls for 16.9 days and accumulates 3.35" (85mm) of precipitation.Snowfall
In Quincy, snow does not fall in May through September.Daylight
In Quincy, Illinois, the average length of the day in May is 14h and 24min.On the first day of the month, sunrise is at 6:04 am and sunset at 8:00 pm. On the last day of May, sunrise is at 5:39 am and sunset at 8:27 pm CDT.
Sunshine
In Quincy, the average sunshine in May is 9h.UV index
The average daily maximum UV index in May in Quincy is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In May, the UV index of 5 transforms into the following advice:
Ensure safety - Sun damage prevention is strongly urged. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures in Quincy?
What is the average humidity in May in Quincy?
What is the wettest month in Quincy?
How many days does it rain in May in Quincy?
When it does not snow in Quincy?
Does it snow in Quincy in May?
What is the average length of the day in May in Quincy?
When are sunrise and sunset in May in Quincy?
How long on average sun shines in May in Quincy?
What is the UV index reading in May in Quincy?
Average temperature in May
Quincy, IL
- Average high temperature in May: 72°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (32.7°F).
- Average low temperature in May: 55.2°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in May
Quincy, IL
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Quincy, IL
- Average wind speed in May: 8.3mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in May
Quincy, IL
- Average humidity in May: 80%
The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall in May
Quincy, IL
- Average rainfall in May: 3.35"
The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are January and December (1.02").
Average rainfall days in May
Quincy, IL
- Average rainfall days in May: 16.9 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (5 days).
Average snowfall in May
Quincy, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Quincy, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.8 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
Quincy, 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 July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Quincy, IL
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in May
Quincy, 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
Quincy, IL
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in May
Quincy, 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).
Quincy, Illinois, USA
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