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
With the onset of May, the average high-temperature subtly transitions from a mild 55.4°F (13°C) in April to an enjoyable 63.7°F (17.6°C). Despite drastic daily temperature oscillations, Clatskanie cools down to an average low-temperature of 40.6°F (4.8°C) in May.Humidity
In Clatskanie, the average relative humidity in May is 80%.Rainfall
In Clatskanie, in May, during 13.2 rainfall days, 0.91" (23mm) of precipitation is typically accumulated. Throughout the year, there are 141.6 rainfall days, and 11.57" (294mm) of precipitation is accumulated.Snowfall
April through November are months without snowfall in Clatskanie.Daylight
In May, the average length of the day is 14h and 59min.On the first day of May, sunrise is at 5:57 am and sunset at 8:21 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:56 pm PDT.
Sunshine
In Clatskanie, the average sunshine in May is 7.4h.UV index
In Clatskanie, the average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 4 during May translates into these guidelines:
Ensure safety - Imperative it is to shield skin and eyes from damage. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes.
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 many days does it rain in May?
When it does not snow?
What is the average length of the day in May?
When are sunrise and sunset in May?
How many hours of sunshine does Clatskanie have in May?
What is the UV index reading in May?
Average temperature in May
Clatskanie, OR
- Average high temperature in May: 63.7°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in May: 40.6°F
The month with the highest average low temperature is August (49.8°F).
The coldest month (with the lowest average low temperature) is December (32.9°F).
Average pressure in May
Clatskanie, OR
- Average pressure in May: 30.04"Hg
The months with the highest atmospheric pressure are January and December (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.02"Hg).
Average wind speed in May
Clatskanie, OR
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).
Average humidity in May
Clatskanie, OR
- Average humidity in May: 80%
The months with the highest relative humidity are February, November and December (89%).
The month with the lowest relative humidity is July (75%).
Average rainfall in May
Clatskanie, OR
- Average rainfall in May: 0.91"
The wettest month (with the highest rainfall) is January (1.77").
The driest month (with the least rainfall) is August (0.24").
Average rainfall days in May
Clatskanie, OR
- Average rainfall days in May: 13.2 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (4.7 days).
Average snowfall in May
Clatskanie, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").
Average snowfall days in May
Clatskanie, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Clatskanie, OR
- Average daylight in May: 15h and 0min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in May: 7h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 12min).
Average sunshine days in May
Clatskanie, OR
- Average sunshine days in May: 16 days
The month with the most sunshine days is August (24.6 days).
The month with the least sunshine days is April (11.7 days).
Average UV index in May
Clatskanie, OR
- Average UV index in May: 4
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
Clatskanie, OR
- Average cloud cover in May: 59
The months with the most cloud cover are February and March (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in May
Clatskanie, OR
- Average visibility in May: 4mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (4mi).
Clatskanie, Oregon, USA
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