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 brings a slight increase in the average high-temperature, moving from a mild 55.4°F (13°C) in April to a still refreshing 63.7°F (17.6°C). In May, Cathlamet endures a notable temperature shift from day to night, with lows averaging at a cold 40.6°F (4.8°C).Humidity
In May, the average relative humidity is 80%.Rainfall
In Cathlamet, during May, the rain falls for 13.2 days and regularly aggregates up to 0.91" (23mm) of precipitation. Throughout the year, in Cathlamet, there are 141.6 rainfall days, and 11.57" (294mm) of precipitation is accumulated.Snowfall
In Cathlamet, snow does not fall in April through November.Daylight
In Cathlamet, Washington, the average length of the day in May is 15h and 0min.On the first day of May in Cathlamet, Washington, sunrise is at 5:58 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:25 am and sunset at 8:57 pm PDT.
Sunshine
In May, the average sunshine is 7.4h.UV index
In May, the average daily maximum UV index in Cathlamet is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: A daily high UV index of 4 in May leads to these guidelines:
Take precautions - Protection against skin and eye damage is obliged. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Frequently asked questions
What is the average May temperature in Cathlamet?
What is the average humidity in May in Cathlamet?
How much does it rain in Cathlamet in May?
When it does not snow in Cathlamet?
How many hours of daylight does Cathlamet have in May?
What time are sunrise and sunset in May in Cathlamet?
How long on average sun shines in May in Cathlamet?
How high is the UV index in May in Cathlamet?
Average temperature in May
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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
Cathlamet, WA
- 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).
Cathlamet, Washington, USA
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