May weather forecastPorter, WA
May
Weather in May
The last month of the spring, May, is a comfortable month in Porter, Washington, with temperature in the range of an average low of 41.5°F (5.3°C) and an average high of 64°F (17.8°C).Temperature
A soft shift in the average high-temperature is noticeable in May, transitioning from a mild 55.4°F (13°C) in April to an enjoyable 64°F (17.8°C). May nights are characterized by a notable drop from daytime highs, with an average low-temperature of 41.5°F (5.3°C).Humidity
The average relative humidity in May is 79%.Rainfall
In Porter, in May, it is raining for 14.2 days, with typically 2.01" (51mm) of accumulated precipitation. In Porter, during the entire year, the rain falls for 183.5 days and collects up to 44.17" (1122mm) of precipitation.Snowfall
April through October are months without snowfall.Daylight
In May, the average length of the day in Porter is 15h and 5min.On the first day of the month, sunrise is at 5:56 am and sunset at 8:24 pm. On the last day of May, sunrise is at 5:22 am and sunset at 8:59 pm PDT.
Sunshine
The average sunshine in May in Porter is 8.3h.UV index
In May, the average daily maximum UV index in Porter is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 4 during May leads to these instructions:
Put precautions into practice - Guidance to elude sunburn is provided. Minimize direct exposure to the Sun during midday when its radiation is at its peak. In bright sunlight, prioritize sunglasses that grant protection from UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Porter, WA
- Average high temperature in May: 64°F
The warmest month (with the highest average high temperature) is August (76.6°F).
The month with the lowest average high temperature is December (42.3°F).
- Average low temperature in May: 41.5°F
The month with the highest average low temperature is August (50.2°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).
Average pressure in May
Porter, WA
- Average pressure in May: 30.04"Hg
The month with the highest atmospheric pressure is January (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in May
Porter, WA
- Average wind speed in May: 4.3mph
The windiest month (with the highest average wind speed) is June (4.5mph).
The calmest month (with the lowest average wind speed) is September (3.5mph).
Average humidity in May
Porter, WA
- Average humidity in May: 79%
The month with the highest relative humidity is December (91%).
The month with the lowest relative humidity is July (73%).
Average rainfall in May
Porter, WA
- Average rainfall in May: 2.01"
The wettest month (with the highest rainfall) is January (7.32").
The driest month (with the least rainfall) is July (0.43").
Average rainfall days in May
Porter, WA
- Average rainfall days in May: 14.2 days
The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (5.7 days).
Average snowfall in May
Porter, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
Porter, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (3.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in May /
Average sunshine in May
Porter, WA
- Average daylight in May: 15h and 6min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in May: 8h and 18min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in May
Porter, WA
- Average sunshine days in May: 14.8 days
The month with the most sunshine days is August (22.4 days).
The month with the least sunshine days is March (7.8 days).
Average UV index in May
Porter, 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
Porter, WA
- Average cloud cover in May: 53
The months with the most cloud cover are January and December (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 36).
Average visibility in May
Porter, 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).
