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 shift into May brings an increase in the average high-temperature, moving from a refreshing 60.1°F (15.6°C) in April to a pleasant 70.5°F (21.4°C). Johnstown temperatures generally rest at a low of 52.5°F (11.4°C) during the May nights.Humidity
The average relative humidity in May is 80%.Rainfall
May is the month with the most rainfall in Johnstown. Rain falls for 20.2 days and accumulates 3.86" (98mm) of precipitation.Snowfall
Months with snowfall in Johnstown are January through May, October through December. May is the last month it regularly snows in Johnstown. During 0.2 snowfall days, in May, Johnstown aggregates 0.04" (1mm) of snow. Throughout the year, in Johnstown, there are 47.1 snowfall days, and 15.43" (392mm) of snow is accumulated.Daylight
In May, the average length of the day is 14h and 25min.On the first day of May, sunrise is at 6:29 am and sunset at 8:26 pm. On the last day of the month, sunrise is at 6:03 am and sunset at 8:53 pm EDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for average individuals.Note: The UV index of 5 during May translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. The Sun's radiation is especially intense around midday; try to stay in shade during this period. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May in Johnstown?
What is the average humidity in May in Johnstown?
What is the rainiest month in Johnstown?
How many days does it rain in May in Johnstown?
What is the last month it snows in Johnstown?
How many hours of daylight does Johnstown have in May?
When is the sunrise / sunset in May in Johnstown?
How long on average sun shines in May in Johnstown?
What is the UV index intensity in May in Johnstown?
Average temperature in May
Johnstown, OH
- Average high temperature in May: 70.5°F
The warmest month (with the highest average high temperature) is July (81.3°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in May: 52.5°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (20.3°F).
Average pressure in May
Johnstown, OH
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Johnstown, OH
- Average wind speed in May: 7.5mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest months (with the lowest average wind speed) are July and August (5.6mph).
Average humidity in May
Johnstown, OH
- Average humidity in May: 80%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is November (76%).
Average rainfall in May
Johnstown, OH
- Average rainfall in May: 3.86"
The wettest month (with the highest rainfall) is May (3.86").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in May
Johnstown, OH
- Average rainfall days in May: 20.2 days
The month with the highest number of rainy days is May (20.2 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in May
Johnstown, OH
- Average snowfall in May: 0.04"
The month with the highest snowfall is January (4.02").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Johnstown, OH
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Johnstown, OH
- Average daylight in May: 14h and 2min
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 5min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in May
Johnstown, OH
- Average sunshine days in May: 8.2 days
The month with the most sunshine days is November (16.4 days).
The month with the least sunshine days is May (8.2 days).
Average UV index in May
Johnstown, OH
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Johnstown, OH
- Average cloud cover in May: 41
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in May
Johnstown, OH
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, October, November and December (6mi).
The months with the lowest visibility are January, February and September (5mi).
Johnstown, Ohio, USA
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