Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
May brings a slight rise in Grain Valley's average high-temperature, moving from a comfortable 64°F (17.8°C) in April to a pleasant 72.7°F (22.6°C). Grain Valley's average low-temperature for the month of May records at a refreshing 56.1°F (13.4°C).Humidity
The months with the highest humidity are May and June, with an average relative humidity of 79%.Rainfall
The month with the most rainfall is May, when the rain falls for 17.6 days and typically aggregates up to 4.13" (105mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Grain Valley aggregates 0.24" (6mm) of snow. In Grain Valley, Missouri, during the entire year, snow falls for 20.9 days and aggregates up to 10.67" (271mm) of snow.Daylight
In May, the average length of the day is 14h and 20min.On the first day of May in Grain Valley, sunrise is at 6:17 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:52 am and sunset at 8:36 pm CDT.
Sunshine
In Grain Valley, the average sunshine in May is 8.6h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index in Grain Valley. A UV Index reading of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: In May, the maximum UV index of 6 translates into these guidelines:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Grain Valley?
What is the most humid month in Grain Valley?
What is the average humidity in May in Grain Valley?
What is the rainiest month in Grain Valley?
How many days does it rain in May in Grain Valley?
What is the last month it snows in Grain Valley?
How many hours of daylight does Grain Valley have in May?
What time are sunrise and sunset in May in Grain Valley?
How long on average sun shines in May in Grain Valley?
What is the month with the highest UV index in Grain Valley?
How high is the UV index in May in Grain Valley?
Average temperature in May
Grain Valley, MO
- Average high temperature in May: 72.7°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 (37°F).
- Average low temperature in May: 56.1°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (22.8°F).
Average pressure in May
Grain Valley, MO
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Grain Valley, MO
- Average wind speed in May: 8.1mph
The windiest months (with the highest average wind speed) are February and March (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in May
Grain Valley, MO
- Average humidity in May: 79%
The months with the highest relative humidity are May and June (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Grain Valley, MO
- Average rainfall in May: 4.13"
The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days in May
Grain Valley, MO
- Average rainfall days in May: 17.6 days
The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall in May
Grain Valley, MO
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Grain Valley, MO
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Grain Valley, MO
- Average daylight in May: 14h and 2min
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 4min
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 0min).
Average sunshine days in May
Grain Valley, MO
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is December (21.8 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Grain Valley, 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
Grain Valley, MO
- Average cloud cover in May: 40
The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Grain Valley, 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).
Grain Valley, Missouri, USA
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