May weather forecastOswego, IL
May
Weather in May
The last month of the spring, May, is a pleasant month in Oswego, Illinois, with an average temperature ranging between min 52.3°F (11.3°C) and max 69.4°F (20.8°C).Temperature
The arrival of May brings a temperature shift, with the average high-temperature escalating from a mild 57°F (13.9°C) in April to a pleasant 69.4°F (20.8°C). An average low-temperature of 52.3°F (11.3°C) is observed during May nights.Humidity
The average relative humidity in May in Oswego is 77%.Rainfall
In Oswego, in May, during 15.3 rainfall days, 2.13" (54mm) of precipitation is typically accumulated. Throughout the year, in Oswego, there are 133.1 rainfall days, and 16.93" (430mm) of precipitation is accumulated.Snowfall
In Oswego, Illinois, snow does not fall in May through September.Daylight
In Oswego, the average length of the day in May is 14h and 34min.On the first day of May in Oswego, Illinois, sunrise is at 5:48 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:21 am and sunset at 8:21 pm CDT.
Sunshine
In May, the average sunshine is 8.7h.UV index
In May, the average daily maximum UV index in Oswego, Illinois, is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: An average UV index of 5 in May transforms into this advice:
Exercise care. People with light skin might get burns in fewer than 30 minutes. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Oswego, IL
- Average high temperature in May: 69.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in May
Oswego, 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
Oswego, IL
- Average wind speed in May: 8.2mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Oswego, IL
- Average humidity in May: 77%
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Oswego, IL
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days in May
Oswego, IL
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in May
Oswego, 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
Oswego, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Oswego, IL
- Average daylight in May: 14h and 36min
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 42min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Oswego, IL
- Average sunshine days in May: 12.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in May
Oswego, IL
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Oswego, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility in May
Oswego, 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).
