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
The average high-temperature increases in May, moving from a fresh 50.9°F (10.5°C) in April to an enjoyable 62.4°F (16.9°C). In May, Jefferson reports a consistent average low-temperature of 48.9°F (9.4°C) during the nights.Humidity
In May, the average relative humidity is 80%.Rainfall
In May, the rain falls for 18.4 days. Throughout May, 3.58" (91mm) of precipitation is accumulated. In Jefferson, during the entire year, the rain falls for 181 days and collects up to 36.34" (923mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Jefferson. During 0.4 snowfall days, in May, Jefferson aggregates 0.08" (2mm) of snow. In Jefferson, during the entire year, snow falls for 71.4 days and aggregates up to 25.28" (642mm) of snow.Daylight
In Jefferson, Ohio, the average length of the day in May is 14h and 34min.On the first day of the month, sunrise is at 6:18 am and sunset at 8:21 pm. On the last day of May, in Jefferson, sunrise is at 5:50 am and sunset at 8:50 pm EDT.
Sunshine
The average sunshine in May is 9.1h.UV index
In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.Note: In May, the maximum UV index of 5 suggests this advice:
Exercise prevention - Warding off sunburn is urged. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Jefferson in May?
What is the average humidity in May in Jefferson?
How much does it rain in Jefferson in May?
What is the last month it snows in Jefferson?
What is the average length of the day in May in Jefferson?
When are sunrise and sunset in May in Jefferson?
How long on average sun shines in May in Jefferson?
How high is the UV index in May in Jefferson?
Average temperature in May
Jefferson, OH
- Average high temperature in May: 62.4°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in May: 48.9°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure in May
Jefferson, OH
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Jefferson, OH
- Average wind speed in May: 7.9mph
The windiest month (with the highest average wind speed) is January (11.4mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in May
Jefferson, OH
- Average humidity in May: 80%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are July, August and September (78%).
Average rainfall in May
Jefferson, OH
- Average rainfall in May: 3.58"
The wettest month (with the highest rainfall) is June (3.94").
The driest months (with the least rainfall) are February and November (2.4").
Average rainfall days in May
Jefferson, OH
- Average rainfall days in May: 18.4 days
The month with the highest number of rainy days is August (18.8 days).
The month with the least rainy days is January (7.9 days).
Average snowfall in May
Jefferson, OH
- Average snowfall in May: 0.08"
The month with the highest snowfall is January (6.69").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Jefferson, OH
- Average snowfall days in May: 0.4 days
The month with the highest number of snowfall days is January (18.4 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, OH
- Average daylight in May: 14h and 4min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 30min).
Average sunshine days in May
Jefferson, OH
- Average sunshine days in May: 10 days
The month with the most sunshine days is September (11 days).
The month with the least sunshine days is January (5.9 days).
Average UV index in May
Jefferson, OH
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Jefferson, OH
- Average cloud cover in May: 40
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in May
Jefferson, OH
- Average visibility in May: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Jefferson, Ohio, USA
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