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
May indicates a change in the average high-temperature, moving up from a cool 54.9°F (12.7°C) in April to a comfortable 67.1°F (19.5°C). In May, Palatine experiences an average nighttime temperature of 50.5°F (10.3°C).Humidity
In May, the average relative humidity is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 14.7 days and typically aggregates up to 1.77" (45mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Palatine. May is the last month it regularly snows. During 0.1 snowfall days, in May, Palatine aggregates 0.04" (1mm) of snow. Throughout the year, there are 37.9 snowfall days, and 6.89" (175mm) of snow is accumulated.Daylight
In Palatine, Illinois, the average length of the day in May is 14h and 35min.On the first day of May, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:21 pm CDT.
Sunshine
In Palatine, the average sunshine in May is 8.4h.UV index
In Palatine, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
What is the rainiest month?
How much does it rain in May?
What is the last month it snows?
What is the average length of the day in May?
When is the sunrise / sunset in May in Palatine?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Palatine, IL
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.9°F).
Average pressure in May
Palatine, 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
Palatine, IL
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Palatine, IL
- Average humidity in May: 76%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Palatine, IL
- Average rainfall in May: 1.77"
The wettest month (with the highest rainfall) is May (1.77").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in May
Palatine, IL
- Average rainfall days in May: 14.7 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in May
Palatine, IL
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Palatine, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Palatine, 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 2min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Palatine, IL
- Average sunshine days in May: 13.3 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is July (12.1 days).
Average UV index in May
Palatine, 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 and December (UV index 1).
Average cloud cover in May
Palatine, IL
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July, August and September (Cloud cover 31).
Average visibility in May
Palatine, 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).
Palatine, Illinois, USA
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