May weather forecastFrankfort, IL
May
Weather in May
The last month of the spring, May, is an agreeable month in Frankfort, Illinois, with an average temperature fluctuating between 52.5°F (11.4°C) and 68.7°F (20.4°C).Temperature
In May, the average high-temperature increases from a moderate 57°F (13.9°C) in April to an agreeable 68.7°F (20.4°C). Nightly temperatures drop to an average low of 52.5°F (11.4°C) in May.Humidity
The average relative humidity in May is 76%.Rainfall
The month with the most rainfall is May, when the rain falls for 12.4 days and typically aggregates up to 1.54" (39mm) of precipitation.Snowfall
In Frankfort, snow does not fall in May through September.Daylight
The average length of the day in May in Frankfort is 14h and 32min.On the first day of May, sunrise is at 5:47 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:18 pm CDT.
Sunshine
In Frankfort, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Frankfort, IL
- Average high temperature in May: 68.7°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 (29.7°F).
- Average low temperature in May: 52.5°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 (18.7°F).
Average pressure in May
Frankfort, 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
Frankfort, IL
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in May
Frankfort, IL
- Average humidity in May: 76%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Frankfort, IL
- Average rainfall in May: 1.54"
The wettest month (with the highest rainfall) is May (1.54").
The driest months (with the least rainfall) are January, February and December (0.55").
Average rainfall days in May
Frankfort, IL
- Average rainfall days in May: 12.4 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in May
Frankfort, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Frankfort, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (10.3 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
Frankfort, IL
- Average daylight in May: 14h and 30min
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 12min).
- Average sunshine in May: 8h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Frankfort, IL
- Average sunshine days in May: 15 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in May
Frankfort, 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
Frankfort, IL
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Frankfort, 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).
