May weather forecastDe Kalb, MO
May
Weather in May
The last month of the spring, May, is a pleasant month in De Kalb, Missouri, with temperature in the range of an average low of 55.4°F (13°C) and an average high of 72.5°F (22.5°C).Temperature
The start of May brings a subtle shift in the average high-temperature, edging up from April's comfortable 63.9°F (17.7°C) to a pleasant 72.5°F (22.5°C). During May, De Kalb witnesses a consistent average low-temperature of 55.4°F (13°C).Humidity
May and June, with an average relative humidity of 78%, are the most humid months.Rainfall
May is the month with the most rainfall. Rain falls for 15.9 days and accumulates 3.58" (91mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. May is the last month it regularly snows in De Kalb. During 0.1 snowfall days, in May, De Kalb aggregates 0.04" (1mm) of snow. In De Kalb, during the entire year, snow falls for 19.9 days and aggregates up to 7.87" (200mm) of snow.Daylight
The average length of the day in May is 14h and 22min.On the first day of the month, sunrise is at 6:19 am and sunset at 8:14 pm. On the last day of May, sunrise is at 5:54 am and sunset at 8:40 pm CDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily maximum UV index of 6 in May interprets into the following advice:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Experience reduced UV exposure by about half when donning a wide-brim hat. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
De Kalb, MO
- Average high temperature in May: 72.5°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (36°F).
- Average low temperature in May: 55.4°F
The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (21.2°F).
Average pressure in May
De Kalb, MO
- Average pressure in May: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
De Kalb, MO
- Average wind speed in May: 8.4mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in May
De Kalb, MO
- Average humidity in May: 78%
The months with the highest relative humidity are May and June (78%).
The months with the lowest relative humidity are October and November (69%).
Average rainfall in May
De Kalb, MO
- Average rainfall in May: 3.58"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is January (0.79").
Average rainfall days in May
De Kalb, MO
- Average rainfall days in May: 15.9 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is January (3.7 days).
Average snowfall in May
De Kalb, MO
- Average snowfall in May: 0.04"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
De Kalb, MO
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
De Kalb, MO
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 36min
The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in May
De Kalb, MO
- Average sunshine days in May: 13.2 days
The month with the most sunshine days is December (22.4 days).
The month with the least sunshine days is June (12.6 days).
Average UV index in May
De Kalb, MO
- 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
De Kalb, MO
- Average cloud cover in May: 40
The month with the most cloud cover is March (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in May
De Kalb, MO
- 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).
