May weather forecastJohnsonville, IL
May
Weather in May
May, the last month of the spring in Johnsonville, is a warm month, with an average temperature varying between 57.9°F (14.4°C) and 73.9°F (23.3°C).Temperature
In Johnsonville, stepping into May brings a temperature increase, moving up from April's refreshing 64.4°F (18°C) to a moderately hot 73.9°F (23.3°C). An average low-temperature of 57.9°F (14.4°C) marks the month of May.Humidity
The months with the highest humidity are May and July, with an average relative humidity of 80%.Rainfall
In Johnsonville, Illinois, in May, it is raining for 19.9 days, with typically 4.21" (107mm) of accumulated precipitation. In Johnsonville, Illinois, during the entire year, the rain falls for 167.3 days and collects up to 37.17" (944mm) of precipitation.Snowfall
May through September are months without snowfall.Daylight
In Johnsonville, the average length of the day in May is 14h and 17min.On the first day of May in Johnsonville, sunrise is at 5:55 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:12 pm CDT.
Sunshine
In Johnsonville, the average sunshine in May is 9.1h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: In May, the average maximum UV index of 6 translates into the following recommendations:
Avoid overexposure. Fair-skinned individuals can burn in under 20 minutes. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Johnsonville, IL
- Average high temperature in May: 73.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 57.9°F
The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in May
Johnsonville, IL
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Johnsonville, 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 months (with the lowest average wind speed) are July and August (6mph).
Average humidity in May
Johnsonville, IL
- Average humidity in May: 80%
The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Johnsonville, IL
- Average rainfall in May: 4.21"
The wettest month (with the highest rainfall) is April (4.88").
The driest months (with the least rainfall) are February and September (2.09").
Average rainfall days in May
Johnsonville, IL
- Average rainfall days in May: 19.9 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in May
Johnsonville, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Johnsonville, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (7.1 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
Johnsonville, IL
- Average daylight in May: 14h and 18min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in May: 9h and 6min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in May
Johnsonville, IL
- Average sunshine days in May: 9 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is May (9 days).
Average UV index in May
Johnsonville, IL
- Average UV index in May: 6
The months with the highest UV index are May, 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
Johnsonville, IL
- Average cloud cover in May: 39
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in May
Johnsonville, 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).
