May weather forecastZion, IL
May
Weather in May
May, the last month of the spring in Zion, is a refreshing month, with an average temperature ranging between min 48.6°F (9.2°C) and max 61.3°F (16.3°C).Temperature
Entering May, Zion sees a temperature rise, with the average high-temperature advancing from April's fresh 50.7°F (10.4°C) to an enjoyable 61.3°F (16.3°C). Zion usually reports an average low-temperature of 48.6°F (9.2°C) during the month of May.Humidity
In May, the average relative humidity is 80%.Rainfall
In Zion, in May, it is raining for 16 days, with typically 2.48" (63mm) of accumulated precipitation. In Zion, during the entire year, the rain falls for 142.5 days and collects up to 21.5" (546mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 37min.On the first day of May, sunrise is at 5:45 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:16 am and sunset at 8:21 pm CDT.
Sunshine
The average sunshine in May in Zion is 8.7h.UV index
In Zion, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Boost your sun resistance with garments that are densely woven yet spacious. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Zion, IL
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is July (77.5°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 48.6°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in May
Zion, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Zion, IL
- Average wind speed in May: 9.2mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.3mph).
Average humidity in May
Zion, IL
- Average humidity in May: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are October and November (75%).
Average rainfall in May
Zion, IL
- Average rainfall in May: 2.48"
The wettest months (with the highest rainfall) are June and August (2.68").
The driest month (with the least rainfall) is December (0.91").
Average rainfall days in May
Zion, IL
- Average rainfall days in May: 16 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in May
Zion, IL
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.6").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Zion, IL
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (12.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Zion, 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 6min).
- Average sunshine in May: 8h and 42min
The months with the most sunshine are July and August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in May
Zion, IL
- Average sunshine days in May: 12.2 days
The month with the most sunshine days is November (16.5 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in May
Zion, IL
- Average UV index in May: 4
The months with the highest UV index are 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
Zion, IL
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in May
Zion, 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).
