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 is marked by a rise in the average high-temperature, moving from April's icy 35.2°F (1.8°C) to a frosty 46.2°F (7.9°C). Port Chilkoot's temperature tends to fall to an average low of 33.8°F (1°C) during the nights of May.Humidity
With an average relative humidity of 78%, May is the least humid month.Rainfall
In Port Chilkoot, in May, it is raining for 17.7 days, with typically 2.28" (58mm) of accumulated precipitation. In Port Chilkoot, during the entire year, the rain falls for 200.4 days and collects up to 48.03" (1220mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.5 snowfall days, in May, Port Chilkoot aggregates 0.08" (2mm) of snow. In Port Chilkoot, during the entire year, snow falls for 83.4 days and aggregates up to 86.57" (2199mm) of snow.Daylight
In Port Chilkoot, the average length of the day in May is 17h and 2min.On the first day of the month, sunrise is at 5:00 am and sunset at 8:57 pm. On the last day of May, sunrise is at 3:57 am and sunset at 10:01 pm AKDT.
Sunshine
In May, the average sunshine is 8.9h.UV index
In May, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the average person.Note: A typical high UV index of 2 in May suggests the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in May?
What is the least humid month?
What is the average humidity in May?
How many days does it rain in May?
What is the last month it snows?
How many hours of daylight does Port Chilkoot have in May?
When is the sunrise / sunset in May?
How many hours of sunshine does Port Chilkoot have in May?
What is the UV index intensity in May?
Average temperature in May
Port Chilkoot, AK
- Average high temperature in May: 46.2°F
The warmest month (with the highest average high temperature) is July (56.5°F).
The month with the lowest average high temperature is January (21.6°F).
- Average low temperature in May: 33.8°F
The month with the highest average low temperature is August (44.1°F).
The coldest month (with the lowest average low temperature) is February (12.4°F).
Average pressure in May
Port Chilkoot, AK
- Average pressure in May: 29.98"Hg
The month with the highest atmospheric pressure is July (30.01"Hg).
The month with the lowest atmospheric pressure is November (29.81"Hg).
Average wind speed in May
Port Chilkoot, AK
- Average wind speed in May: 4.7mph
The windiest month (with the highest average wind speed) is January (6.7mph).
The calmest month (with the lowest average wind speed) is May (4.7mph).
Average humidity in May
Port Chilkoot, AK
- Average humidity in May: 78%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is May (78%).
Average rainfall in May
Port Chilkoot, AK
- Average rainfall in May: 2.28"
The wettest month (with the highest rainfall) is November (5.87").
The driest month (with the least rainfall) is June (2.2").
Average rainfall days in May
Port Chilkoot, AK
- Average rainfall days in May: 17.7 days
The month with the highest number of rainy days is October (20.2 days).
The month with the least rainy days is February (9.3 days).
Average snowfall in May
Port Chilkoot, AK
- Average snowfall in May: 0.08"
The month with the highest snowfall is December (21.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Port Chilkoot, AK
- Average snowfall days in May: 0.5 days
The month with the highest number of snowfall days is December (17.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Port Chilkoot, AK
- Average daylight in May: 17h and 0min
The month with the longest days is June (Average daylight: 18h and 30min).
The month with the shortest days is December (Average daylight: 6h and 18min).
- Average sunshine in May: 8h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in May
Port Chilkoot, AK
- Average sunshine days in May: 10 days
The month with the most sunshine days is February (10.4 days).
The month with the least sunshine days is June (6.3 days).
Average UV index in May
Port Chilkoot, AK
- Average UV index in May: 2
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February, November and December (UV index 1).
Average cloud cover in May
Port Chilkoot, AK
- Average cloud cover in May: 47
The month with the most cloud cover is December (Cloud cover 63).
The month with the least cloud cover is May (Cloud cover 47).
Average visibility in May
Port Chilkoot, AK
- Average visibility in May: 5mi
The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).
Port Chilkoot, Alaska, USA
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