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 start of May brings a shift in the average high-temperature, increasing from April's refreshing 60.1°F (15.6°C) to a pleasant 71.8°F (22.1°C). Irwin usually reports an average low-temperature of 51.4°F (10.8°C) during the month of May.Humidity
In Irwin, the average relative humidity in May is 78%.Rainfall
The month with the most rainfall is May, when the rain falls for 18.3 days and typically aggregates up to 2.28" (58mm) of precipitation.Snowfall
In Irwin, 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 May, sunrise is at 6:17 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:51 am and sunset at 8:42 pm EDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.Note: A maximum daily UV index of 6 during May morphs into the following directions:
Adopt measures and apply sun safety strategies. Shielding from skin and eye damage is necessary. Between 10 a.m. and 4 p.m., UV radiation is strongest. Make an effort to avoid direct sunlight during this time, remembering that shade structures may not provide full sun protection. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in May?
What is the average humidity in May?
What is the rainiest month?
How many days does it rain in May in Irwin?
When it does not snow?
Does it snow in May?
How many hours of daylight does Irwin have in May?
What time are sunrise and sunset in May?
How long on average sun shines in May?
What is the month with the highest UV index?
What is the UV index reading in May?
Average temperature in May
Irwin, PA
- Average high temperature in May: 71.8°F
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (33.6°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (61.5°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in May
Irwin, PA
- Average pressure in May: 30"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in May
Irwin, PA
- Average wind speed in May: 6.1mph
The windiest month (with the highest average wind speed) is January (8mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in May
Irwin, PA
- Average humidity in May: 78%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are April, July and August (76%).
Average rainfall in May
Irwin, PA
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is May (2.28").
The driest months (with the least rainfall) are January and November (1.14").
Average rainfall days in May
Irwin, PA
- 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 January (9.1 days).
Average snowfall in May
Irwin, PA
- Average snowfall in May: 0"
The month with the highest snowfall is January (2.13").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in May
Irwin, PA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is January (14.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Irwin, PA
- 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 month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in May
Irwin, PA
- Average sunshine days in May: 10.3 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is February (9 days).
Average UV index in May
Irwin, PA
- Average UV index in May: 6
The months with the highest UV index are May, June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in May
Irwin, PA
- Average cloud cover in May: 44
The month with the most cloud cover is January (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in May
Irwin, PA
- Average visibility in May: 5mi
The months with the highest visibility are April, June, July, August and November (6mi).
The months with the lowest visibility are January, February, March, May, September, October and December (5mi).
Irwin, Pennsylvania, USA
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