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
With the onset of May, Greencastle sees a temperature rise, with the average high-temperature moving from April's enjoyable 61.9°F (16.6°C) to a pleasant 71.8°F (22.1°C). Throughout the month of May, Greencastle expects an average low of 55°F (12.8°C).Humidity
In May, the average relative humidity is 82%.Rainfall
The month with the most rainfall is May, when the rain falls for 15.8 days and typically aggregates up to 1.5" (38mm) of precipitation.Snowfall
In Greencastle, snow does not fall in May through October.Daylight
In May, the average length of the day is 14h and 23min.On the first day of May, sunrise is at 6:47 am and sunset at 8:41 pm. On the last day of the month, sunrise is at 6:21 am and sunset at 9:08 pm EDT.
Sunshine
The average sunshine in May in Greencastle is 8.6h.UV index
In Greencastle, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: The UV index of 5 during May leads to these advisories:
Adopt protective measures - Suggestions to resist sunburn are offered. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the average May temperature in Greencastle?
What is the average humidity in May in Greencastle?
What is the wettest month in Greencastle?
How much does it rain in Greencastle in May?
When it does not snow in Greencastle?
Does it snow in Greencastle in May?
What is the average length of the day in May in Greencastle?
What time are sunrise and sunset in May in Greencastle?
How long on average sun shines in May in Greencastle?
How high is the UV index in May in Greencastle?
Average temperature in May
Greencastle, IN
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 55°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 (20.8°F).
Average pressure in May
Greencastle, IN
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Greencastle, IN
- Average wind speed in May: 8mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.9mph).
Average humidity in May
Greencastle, IN
- Average humidity in May: 82%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Greencastle, IN
- Average rainfall in May: 1.5"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is September (0.67").
Average rainfall days in May
Greencastle, IN
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in May
Greencastle, IN
- Average snowfall in May: 0"
The month with the highest snowfall is December (1.22").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Greencastle, IN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (5.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Greencastle, IN
- 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 24min).
- Average sunshine in May: 8h and 4min
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 12min).
Average sunshine days in May
Greencastle, IN
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in May
Greencastle, IN
- 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, October, November and December (UV index 2).
Average cloud cover in May
Greencastle, IN
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Greencastle, IN
- 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).
Greencastle, Indiana, USA
Weather forecast for your location
2. Allow the app to use your location
