May weather forecastNeptune, OH
May
Weather in May
The last month of the spring, May, is an agreeable month in Neptune, Ohio, with an average temperature ranging between max 70.7°F (21.5°C) and min 54.1°F (12.3°C).Temperature
The shift from April to May sees an increase in the average high-temperature, transitioning from a refreshing 59.5°F (15.3°C) to a pleasant 70.7°F (21.5°C). Neptune's temperature lowers to a mean of 54.1°F (12.3°C) during the nights in May.Humidity
The average relative humidity in May in Neptune is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 16.7 days and typically aggregates up to 2.4" (61mm) of precipitation.Snowfall
In Neptune, snow does not fall in May through September.Daylight
In May, the average length of the day is 14h and 28min.On the first day of the month, sunrise is at 6:35 am and sunset at 8:34 pm. On the last day of May, sunrise is at 6:09 am and sunset at 9:02 pm EDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In Neptune, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily maximum UV index of 5 in May translates into the following instructions:
Be vigilant - A duty to shield skin and eyes from injury exists. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Always opt for UVA and UVB-resistant sunglasses on radiant days. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Neptune, OH
- Average high temperature in May: 70.7°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.6°F).
- Average low temperature in May: 54.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (19.9°F).
Average pressure in May
Neptune, OH
- Average pressure in May: 29.97"Hg
The months with the highest atmospheric pressure are January and November (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in May
Neptune, OH
- Average wind speed in May: 8.3mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in May
Neptune, OH
- Average humidity in May: 78%
The months with the highest relative humidity are January, February and December (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall in May
Neptune, OH
- Average rainfall in May: 2.4"
The wettest month (with the highest rainfall) is May (2.4").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in May
Neptune, OH
- Average rainfall days in May: 16.7 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in May
Neptune, OH
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Neptune, OH
- Average snowfall days in May: 0.1 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Neptune, OH
- Average daylight in May: 14h and 30min
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 18min).
- Average sunshine in May: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Neptune, OH
- Average sunshine days in May: 11.6 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in May
Neptune, OH
- Average UV index in May: 5
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Neptune, OH
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Neptune, OH
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (6mi).
The months with the lowest visibility are August and September (5mi).





