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 increase in the average high-temperature marks May, moving from April's cool 51.1°F (10.6°C) to a comfortable 61.3°F (16.3°C). Island City registers a significant drop in temperature in May, with average nighttime lows of 37.6°F (3.1°C).Humidity
The average relative humidity in May is 67%.Rainfall
In Island City, in May, it is raining for 15.8 days, with typically 1.57" (40mm) of accumulated precipitation. In Island City, during the entire year, the rain falls for 141.7 days and collects up to 18.43" (468mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Island City aggregates 0.31" (8mm) of snow. In Island City, Oregon, during the entire year, snow falls for 56.6 days and aggregates up to 36.85" (936mm) of snow.Daylight
In May, the average length of the day is 14h and 55min.On the first day of the month, sunrise is at 5:39 am and sunset at 7:59 pm. On the last day of May, sunrise is at 5:07 am and sunset at 8:32 pm PDT.
Sunshine
In May, the average sunshine is 11h.UV index
In May, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 4 in May translates into the following recommendations:
Heed the precautions - Suggestions to avoid sunburn are made. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are May temperatures?
What is the average humidity in May?
How much does it rain in Island City in May?
What is the last month it snows?
What is the average length of the day in May in Island City?
When are sunrise and sunset in May in Island City?
How long on average sun shines in May?
How high is the UV index in May?
Average temperature in May
Island City, OR
- Average high temperature in May: 61.3°F
The warmest month (with the highest average high temperature) is August (81.3°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in May: 37.6°F
The month with the highest average low temperature is August (52.2°F).
The coldest month (with the lowest average low temperature) is December (20.5°F).
Average pressure in May
Island City, OR
- Average pressure in May: 29.95"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.92"Hg).
Average wind speed in May
Island City, OR
- Average wind speed in May: 4.9mph
The windiest month (with the highest average wind speed) is January (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in May
Island City, OR
- Average humidity in May: 67%
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is August (45%).
Average rainfall in May
Island City, OR
- Average rainfall in May: 1.57"
The wettest month (with the highest rainfall) is December (2.48").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Island City, OR
- Average rainfall days in May: 15.8 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (4.8 days).
Average snowfall in May
Island City, OR
- Average snowfall in May: 0.31"
The month with the highest snowfall is February (10.2").
The months with the least snowfall are June, July and August (0").
Average snowfall days in May
Island City, OR
- Average snowfall days in May: 0.8 days
The month with the highest number of snowfall days is December (13.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in May /
Average sunshine in May
Island City, OR
- Average daylight in May: 14h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in May: 11h and 0min
The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The months with the least sunshine are January and February (Average sunshine: 5h and 6min).
Average sunshine days in May
Island City, OR
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is July (23.4 days).
The month with the least sunshine days is February (9.1 days).
Average UV index in May
Island City, OR
- Average UV index in May: 4
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, November and December (UV index 2).
Average cloud cover in May
Island City, OR
- Average cloud cover in May: 29
The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 10).
Average visibility in May
Island City, OR
- Average visibility in May: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (5mi).
Island City, Oregon, USA
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