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
An upsurge in temperatures occurs as April gives way to May, with average highs shifting from a fresh 52.5°F (11.4°C) to an enjoyable 66°F (18.9°C). During May nights, Portville witnesses a consistent average temperature of 45.1°F (7.3°C).Humidity
May through July, with an average relative humidity of 79%, are the least humid months in Portville.Rainfall
In Portville, in May, it is raining for 18.7 days, with typically 2.68" (68mm) of accumulated precipitation. Throughout the year, in Portville, New York, there are 168.9 rainfall days, and 30" (762mm) of precipitation is accumulated.Snowfall
Months with snowfall in Portville, New York, are January through May, October through December. May is the last month it regularly snows in Portville. During 1 snowfall days, in May, Portville aggregates 0.28" (7mm) of snow. In Portville, during the entire year, snow falls for 92.6 days and aggregates up to 43.58" (1107mm) of snow.Daylight
In May, the average length of the day is 14h and 35min.On the first day of May, sunrise is at 6:08 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:42 pm EDT.
Sunshine
In May, the average sunshine is 8.1h.UV index
May through August, with an average maximum UV index of 5, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In May, a daily UV index of 5 turns into the following recommendations:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
What are May temperatures in Portville?
What are the least humid months in Portville?
What is the average humidity in May in Portville?
How many days does it rain in May in Portville?
What is the last month it snows in Portville?
How many hours of daylight does Portville have in May?
When are sunrise and sunset in May in Portville?
How long on average sun shines in May in Portville?
When is the highest UV index in Portville?
What is the UV index reading in May in Portville?
Average temperature in May
Portville, NY
- Average high temperature in May: 66°F
The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (27.9°F).
- Average low temperature in May: 45.1°F
The month with the highest average low temperature is July (55.9°F).
The coldest month (with the lowest average low temperature) is January (15.8°F).
Average pressure in May
Portville, NY
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Portville, NY
- Average wind speed in May: 7.3mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).
Average humidity in May
Portville, NY
- Average humidity in May: 79%
The months with the highest relative humidity are January and February (89%).
The months with the lowest relative humidity are May, June and July (79%).
Average rainfall in May
Portville, NY
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is April (3.35").
The driest month (with the least rainfall) is September (1.93").
Average rainfall days in May
Portville, NY
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (6.8 days).
Average snowfall in May
Portville, NY
- Average snowfall in May: 0.28"
The month with the highest snowfall is February (10.63").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Portville, NY
- Average snowfall days in May: 1 days
The month with the highest number of snowfall days is January (20.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Portville, NY
- 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: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days in May
Portville, NY
- Average sunshine days in May: 10.1 days
The month with the most sunshine days is September (12.4 days).
The month with the least sunshine days is February (5.9 days).
Average UV index in May
Portville, NY
- Average UV index in May: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in May
Portville, NY
- Average cloud cover in May: 50
The month with the most cloud cover is January (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 43).
Average visibility in May
Portville, NY
- Average visibility in May: 5mi
The months with the highest visibility are March, April, May, June, July, October and November (5mi).
The months with the lowest visibility are January, February, August, September and December (4mi).
Portville, New York, USA
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