May weather forecastJefferson, IN
May
Weather in May
The last month of the spring, May, is a pleasant month in Jefferson, Indiana, with an average temperature ranging between min 55°F (12.8°C) and max 71.4°F (21.9°C).Temperature
The shift from April to May is marked by an increase in the average high-temperature, moving from a mild 60.3°F (15.7°C) to a pleasant 71.4°F (21.9°C). Jefferson's average low-temperature for the month of May records at a cool 55°F (12.8°C).Humidity
The average relative humidity in May is 78%.Rainfall
In Jefferson, in May, during 18.3 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 139.5 rainfall days, and 18.07" (459mm) of precipitation is accumulated.Snowfall
In Jefferson, snow does not fall in May through September.Daylight
The average length of the day in May is 14h and 26min.On the first day of the month, sunrise is at 6:44 am and sunset at 8:42 pm. On the last day of May, sunrise is at 6:18 am and sunset at 9:09 pm EDT.
Sunshine
In May, the average sunshine is 8.6h.UV index
In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 5 during May translates into the following guidance:
Be vigilant - A duty to shield skin and eyes from injury exists. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Jefferson, IN
- Average high temperature in May: 71.4°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (32°F).
- Average low temperature in May: 55°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).
Average pressure in May
Jefferson, IN
- Average pressure in May: 29.97"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Jefferson, IN
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in May
Jefferson, IN
- Average humidity in May: 78%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall in May
Jefferson, IN
- Average rainfall in May: 2.24"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in May
Jefferson, IN
- Average rainfall days in May: 18.3 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in May
Jefferson, IN
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Jefferson, IN
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Jefferson, IN
- Average daylight in May: 14h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in May: 8h and 36min
The months with the most sunshine are June and July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Jefferson, IN
- Average sunshine days in May: 10.8 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in May
Jefferson, 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
Jefferson, IN
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Jefferson, 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).
