May weather forecastSaint Joseph, IL
May
Weather in May
The last month of the spring, May, is a pleasant month in Saint Joseph, Illinois, with an average temperature varying between 56.1°F (13.4°C) and 72.1°F (22.3°C).Temperature
Noticing a change, the average high-temperature during May moves from April's comfortable 61.3°F (16.3°C) to a pleasant 72.1°F (22.3°C). Saint Joseph in May experiences a low-temperature average of 56.1°F (13.4°C).Humidity
In May, the average relative humidity in Saint Joseph, Illinois, is 76%.Rainfall
In Saint Joseph, in May, it is raining for 15.3 days, with typically 2.2" (56mm) of accumulated precipitation. Throughout the year, in Saint Joseph, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall in Saint Joseph, Illinois.Daylight
The average length of the day in May in Saint Joseph is 14h and 25min.On the first day of May, sunrise is at 5:50 am and sunset at 7:47 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:14 pm CDT.
Sunshine
In May, the average sunshine is 9h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 5 during May translates into these guidelines:
Make use of precautions - Shielding skin and eyes from injury is a requirement. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Saint Joseph, IL
- Average high temperature in May: 72.1°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 (31.8°F).
- Average low temperature in May: 56.1°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in May
Saint Joseph, IL
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in May
Saint Joseph, IL
- Average wind speed in May: 8.9mph
The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Saint Joseph, IL
- Average humidity in May: 76%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Saint Joseph, IL
- Average rainfall in May: 2.2"
The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").
Average rainfall days in May
Saint Joseph, IL
- Average rainfall days in May: 15.3 days
The month with the highest number of rainy days is May (15.3 days).
The months with the least rainy days are January and February (6 days).
Average snowfall in May
Saint Joseph, IL
- Average snowfall in May: 0"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Saint Joseph, IL
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (8.7 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
Saint Joseph, IL
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 9h and 0min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in May
Saint Joseph, IL
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).
Average UV index in May
Saint Joseph, 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, February, November and December (UV index 2).
Average cloud cover in May
Saint Joseph, IL
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in May
Saint Joseph, 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).
