May weather forecastBlackburn, MO
May
Weather in May
May, the last month of the spring in Blackburn, is a warm month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 73.4°F (23°C).Temperature
As Blackburn, Missouri, enters May, the average high-temperature marginally increases from the a refreshing 64.6°F (18.1°C) of April to a moderately hot 73.4°F (23°C). During May, Blackburn's temperature falls to a steady low-temperature average of 56.3°F (13.5°C).Humidity
The most humid month is May, with an average relative humidity of 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 13.5 days and typically aggregates up to 1.89" (48mm) of precipitation.Snowfall
April through September are months without snowfall.Daylight
In May, the average length of the day is 14h and 20min.On the first day of May in Blackburn, sunrise is at 6:14 am and sunset at 8:07 pm. On the last day of the month, sunrise is at 5:49 am and sunset at 8:33 pm CDT.
Sunshine
The average sunshine in May in Blackburn is 8.8h.UV index
In Blackburn, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: In May, the maximum UV index of 5 translates into these guidelines:
Undertake precautions - It is suggested to shield oneself from sunburn. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Blackburn, MO
- Average high temperature in May: 73.4°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (36.7°F).
- Average low temperature in May: 56.3°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in May
Blackburn, MO
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in May
Blackburn, MO
- Average wind speed in May: 8.3mph
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 (6.4mph).
Average humidity in May
Blackburn, MO
- Average humidity in May: 79%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Blackburn, MO
- Average rainfall in May: 1.89"
The wettest month (with the highest rainfall) is May (1.89").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in May
Blackburn, MO
- Average rainfall days in May: 13.5 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in May
Blackburn, MO
- Average snowfall in May: 0"
The month with the highest snowfall is February (1.1").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in May
Blackburn, MO
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Blackburn, MO
- Average daylight in May: 14h and 18min
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 30min).
- Average sunshine in May: 8h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in May
Blackburn, MO
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is May (14.8 days).
Average UV index in May
Blackburn, MO
- 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
Blackburn, MO
- Average cloud cover in May: 39
The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Blackburn, 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).





