May weather forecastKeystone Manor, IN
May
Weather in May
The last month of the spring, May, is a pleasant month in Keystone Manor, Indiana, with an average temperature fluctuating between 55.6°F (13.1°C) and 71.8°F (22.1°C).Temperature
The shift into May is accompanied by a temperature increase, with the average high-temperature rising from a refreshing 61.5°F (16.4°C) in April to a pleasant 71.8°F (22.1°C). Keystone Manor experiences an average low-temperature reading of 55.6°F (13.1°C) throughout May.Humidity
In Keystone Manor, the average relative humidity in May is 79%.Rainfall
May is the month with the most rainfall. Rain falls for 17.6 days and accumulates 2.68" (68mm) of precipitation.Snowfall
In Keystone Manor, 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 the month, sunrise is at 6:44 am and sunset at 8:39 pm. On the last day of May, sunrise is at 6:19 am and sunset at 9:06 pm EDT.
Sunshine
In Keystone Manor, the average sunshine in May is 8.8h.UV index
May through August, with an average maximum UV index of 6, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 6 during May leads to these advisories:
Embrace precautions and observe sun safety norms. Evasion of sunburn is a necessity. The hours from 10 a.m. to 4 p.m. have the most intense UV radiation. As much as possible, limit direct sun exposure during this period. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Keystone Manor, IN
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
- Average low temperature in May: 55.6°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Keystone Manor, 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
Keystone Manor, IN
- Average wind speed in May: 7.8mph
The windiest months (with the highest average wind speed) are January and February (9.8mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in May
Keystone Manor, IN
- Average humidity in May: 79%
The month with the highest relative humidity is December (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Keystone Manor, IN
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is May (2.68").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in May
Keystone Manor, IN
- 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 February (6.8 days).
Average snowfall in May
Keystone Manor, IN
- Average snowfall in May: 0"
The month with the highest snowfall is December (2.28").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in May
Keystone Manor, IN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Keystone Manor, IN
- 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 48min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in May
Keystone Manor, IN
- Average sunshine days in May: 11.1 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is May (11.1 days).
Average UV index in May
Keystone Manor, IN
- 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, October, November and December (UV index 2).
Average cloud cover in May
Keystone Manor, IN
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in May
Keystone Manor, IN
- 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).





