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
As Palo Alto transitions into May, the average high-temperature is observed to rise from a moderate 57.4°F (14.1°C) in April to a pleasant 68.4°F (20.2°C). Palo Alto experiences a mean low-temperature of 49.6°F (9.8°C) during May.Humidity
In May, the average relative humidity in Palo Alto is 81%.Rainfall
May is the month with the most rainfall in Palo Alto. Rain falls for 18.7 days and accumulates 3.39" (86mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Palo Alto. May is the last month it regularly snows. During 0.2 snowfall days, in May, Palo Alto aggregates 0.28" (7mm) of snow. Throughout the year, in Palo Alto, Pennsylvania, there are 39.7 snowfall days, and 20.47" (520mm) of snow is accumulated.Daylight
In Palo Alto, the average length of the day in May is 14h and 28min.On the first day of the month, sunrise is at 6:02 am and sunset at 8:01 pm. On the last day of May, in Palo Alto, sunrise is at 5:35 am and sunset at 8:29 pm EDT.
Sunshine
The average sunshine in May is 8.3h.UV index
In May, the average daily maximum UV index in Palo Alto is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum UV index of 5 during May leads to these instructions:
Undertake protective steps - Preventing sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the average May temperature in Palo Alto?
What is the average humidity in May in Palo Alto?
What is the wettest month in Palo Alto?
How much does it rain in Palo Alto in May?
What is the last month it snows in Palo Alto?
How many hours of daylight does Palo Alto have in May?
When are sunrise and sunset in May in Palo Alto?
How many hours of sunshine does Palo Alto have in May?
What is the UV index reading in May in Palo Alto?
Average temperature in May
Palo Alto, PA
- Average high temperature in May: 68.4°F
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in May: 49.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure in May
Palo Alto, PA
- Average pressure in May: 30.01"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in May
Palo Alto, PA
- Average wind speed in May: 6.3mph
The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity in May
Palo Alto, PA
- Average humidity in May: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is April (77%).
Average rainfall in May
Palo Alto, PA
- Average rainfall in May: 3.39"
The wettest month (with the highest rainfall) is May (3.39").
The driest month (with the least rainfall) is September (2.09").
Average rainfall days in May
Palo Alto, PA
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and November (10.8 days).
Average snowfall in May
Palo Alto, PA
- Average snowfall in May: 0.28"
The month with the highest snowfall is January (5.47").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Palo Alto, PA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Palo Alto, PA
- Average daylight in May: 14h and 3min
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 2min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The months with the least sunshine are January, February and December (Average sunshine: 4h and 24min).
Average sunshine days in May
Palo Alto, PA
- Average sunshine days in May: 9.6 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.6 days).
Average UV index in May
Palo Alto, PA
- 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, March, November and December (UV index 2).
Average cloud cover in May
Palo Alto, PA
- Average cloud cover in May: 48
The months with the most cloud cover are February and December (Cloud cover 53).
The month with the least cloud cover is July (Cloud cover 32).
Average visibility in May
Palo Alto, PA
- Average visibility in May: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Palo Alto, Pennsylvania, USA
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