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
A slight uplift in the average high-temperature marks May, adjusting from April's cold 40.6°F (4.8°C) to a chilly 48.6°F (9.2°C). A modest nighttime temperature average of 40.5°F (4.7°C) characterizes May in Katalla.Humidity
In May, the average relative humidity is 79%.Rainfall
In Katalla, in May, during 17.5 rainfall days, 4.25" (108mm) of precipitation is typically accumulated. Throughout the year, there are 191.3 rainfall days, and 72.4" (1839mm) of precipitation is accumulated.Snowfall
Months with snowfall in Katalla, Alaska, are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Katalla aggregates 0.31" (8mm) of snow. In Katalla, during the entire year, snow falls for 66.1 days and aggregates up to 74.57" (1894mm) of snow.Daylight
The average length of the day in May in Katalla is 17h and 17min.On the first day of May in Katalla, sunrise is at 5:31 am and sunset at 9:38 pm. On the last day of the month, sunrise is at 4:24 am and sunset at 10:46 pm AKDT.
Sunshine
The months with the most sunshine in Katalla are May through July, with an average of 7.6h of sunshine.UV index
The average daily maximum UV index in May in Katalla, Alaska, is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 3 in May translates into these instructions:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What are May temperatures in Katalla?
What is the average humidity in May in Katalla?
How much does it rain in Katalla in May?
What is the last month it snows in Katalla?
How many hours of daylight does Katalla have in May?
When is the sunrise / sunset in May in Katalla?
What is the month with the most sunshine in Katalla?
How many hours of sunshine does Katalla have in May?
How high is the UV index in May in Katalla?
Average temperature in May
Katalla, AK
- Average high temperature in May: 48.6°F
The warmest month (with the highest average high temperature) is July (58.6°F).
The month with the lowest average high temperature is January (30.2°F).
- Average low temperature in May: 40.5°F
The month with the highest average low temperature is August (50°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in May
Katalla, AK
- Average pressure in May: 29.96"Hg
The month with the highest atmospheric pressure is July (30"Hg).
The month with the lowest atmospheric pressure is November (29.65"Hg).
Average wind speed in May
Katalla, AK
- Average wind speed in May: 6.2mph
The windiest months (with the highest average wind speed) are January and November (12.1mph).
The calmest month (with the lowest average wind speed) is June (5.2mph).
Average humidity in May
Katalla, AK
- Average humidity in May: 79%
The month with the highest relative humidity is August (84%).
The month with the lowest relative humidity is November (75%).
Average rainfall in May
Katalla, AK
- Average rainfall in May: 4.25"
The wettest month (with the highest rainfall) is October (9.09").
The driest month (with the least rainfall) is June (2.72").
Average rainfall days in May
Katalla, AK
- Average rainfall days in May: 17.5 days
The month with the highest number of rainy days is August (21 days).
The month with the least rainy days is February (9.6 days).
Average snowfall in May
Katalla, AK
- Average snowfall in May: 0.31"
The month with the highest snowfall is December (17.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Katalla, AK
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is December (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Katalla, AK
- Average daylight in May: 17h and 2min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in May: 7h and 4min
The months with the most sunshine are May, June and July (Average sunshine: 7h and 36min).
The month with the least sunshine is December (Average sunshine: 2h and 6min).
Average sunshine days in May
Katalla, AK
- Average sunshine days in May: 11.5 days
The month with the most sunshine days is July (12.1 days).
The month with the least sunshine days is September (8 days).
Average UV index in May
Katalla, AK
- Average UV index in May: 3
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in May
Katalla, AK
- Average cloud cover in May: 57
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is May (Cloud cover 57).
Average visibility in May
Katalla, AK
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January, August and December (5mi).
Katalla, Alaska, USA
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