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
Greenville's May weather shows an increase in high-temperatures, moving from April's refreshing 55.6°F (13.1°C) to a comfortable 67.8°F (19.9°C). In the month of May, Greenville records a consistent average low-temperature of 51.4°F (10.8°C).Humidity
In Greenville, the average relative humidity in May is 69%.Rainfall
In May, in Greenville, the rain falls for 15.5 days. Throughout May, 2.13" (54mm) of precipitation is accumulated. In Greenville, Iowa, during the entire year, the rain falls for 112.3 days and collects up to 15.31" (389mm) of precipitation.Snowfall
Months with snowfall in Greenville are January through May, October through December. May is the last month it regularly snows in Greenville, Iowa. During 0.3 snowfall days, in May, Greenville aggregates 0.12" (3mm) of snow. In Greenville, during the entire year, snow falls for 45.5 days and aggregates up to 11.14" (283mm) of snow.Daylight
In Greenville, the average length of the day in May is 14h and 41min.On the first day of the month, sunrise is at 6:13 am and sunset at 8:22 pm. On the last day of May, in Greenville, Iowa, sunrise is at 5:44 am and sunset at 8:52 pm CDT.
Sunshine
In May, the average sunshine in Greenville is 8.7h.UV index
The average daily maximum UV index in May in Greenville is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: During May, 5 as the daily maximum UV index converts into the following advice:
Act with care - The need to guard against sun damage is communicated. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What are May temperatures in Greenville?
What is the average humidity in May in Greenville?
How much does it rain in Greenville in May?
What is the last month it snows in Greenville?
What is the average length of the day in May in Greenville?
When is the sunrise / sunset in May in Greenville?
How long on average sun shines in May in Greenville?
How high is the UV index in May in Greenville?
Average temperature in May
Greenville, IA
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (10.6°F).
Average pressure in May
Greenville, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed in May
Greenville, IA
- Average wind speed in May: 9.7mph
The windiest months (with the highest average wind speed) are January and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.6mph).
Average humidity in May
Greenville, IA
- Average humidity in May: 69%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Greenville, IA
- Average rainfall in May: 2.13"
The wettest month (with the highest rainfall) is June (2.44").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in May
Greenville, IA
- Average rainfall days in May: 15.5 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in May
Greenville, IA
- Average snowfall in May: 0.12"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Greenville, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Greenville, IA
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in May: 8h and 4min
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 0min).
Average sunshine days in May
Greenville, IA
- Average sunshine days in May: 12.6 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in May
Greenville, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).
Average cloud cover in May
Greenville, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in May
Greenville, IA
- 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).
Greenville, Iowa, USA
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