May weather forecastFort Canby, WA
May
Weather in May
The last month of the spring, May, is a moderate month in Fort Canby, Washington, with an average temperature varying between 55.9°F (13.3°C) and 48.7°F (9.3°C).Temperature
The average high-temperature during May registers at a moderate 55.9°F (13.3°C), closely corresponding to the preceding month. The nighttime temperature in May experiences a minor dip, averaging a frosty 48.7°F (9.3°C).Humidity
The average relative humidity in May in Fort Canby is 81%.Rainfall
In May, the rain falls for 11.1 days. Throughout May, 0.79" (20mm) of precipitation is accumulated. Throughout the year, there are 165.1 rainfall days, and 19.92" (506mm) of precipitation is accumulated.Snowfall
In Fort Canby, snow does not fall in March through August, October through December.Daylight
In May, the average length of the day in Fort Canby is 15h and 1min.On the first day of the month, sunrise is at 6:00 am and sunset at 8:25 pm. On the last day of May, sunrise is at 5:27 am and sunset at 9:00 pm PDT.
Sunshine
In May, the average sunshine is 8.2h.UV index
May through September, with an average maximum UV index of 4, are months with the highest UV index. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.Note: During May, 4 as the daily maximum UV index converts into the following advice:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Fort Canby, WA
- Average high temperature in May: 55.9°F
The warmest month (with the highest average high temperature) is August (63.9°F).
The month with the lowest average high temperature is December (46.8°F).
- Average low temperature in May: 48.7°F
The month with the highest average low temperature is August (55.9°F).
The coldest month (with the lowest average low temperature) is December (41.5°F).
Average pressure in May
Fort Canby, WA
- Average pressure in May: 30.06"Hg
The month with the highest atmospheric pressure is July (30.08"Hg).
The month with the lowest atmospheric pressure is March (30.01"Hg).
Average wind speed in May
Fort Canby, WA
- Average wind speed in May: 8.5mph
The windiest month (with the highest average wind speed) is January (11.9mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity in May
Fort Canby, WA
- Average humidity in May: 81%
The month with the highest relative humidity is August (86%).
The month with the lowest relative humidity is April (80%).
Average rainfall in May
Fort Canby, WA
- Average rainfall in May: 0.79"
The wettest month (with the highest rainfall) is December (3.31").
The driest month (with the least rainfall) is July (0.35").
Average rainfall days in May
Fort Canby, WA
- Average rainfall days in May: 11.1 days
The month with the highest number of rainy days is November (18.5 days).
The month with the least rainy days is August (6.7 days).
Average snowfall in May
Fort Canby, WA
- Average snowfall in May: 0"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are March, April, May, June, July, August, October, November and December (0").
Average snowfall days in May
Fort Canby, WA
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August and October (0 days).
Average daylight in May /
Average sunshine in May
Fort Canby, 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: 8h and 12min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Fort Canby, WA
- Average sunshine days in May: 16.7 days
The month with the most sunshine days is August (20.3 days).
The month with the least sunshine days is November (8.9 days).
Average UV index in May
Fort Canby, WA
- Average UV index in May: 4
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are February, November and December (UV index 2).
Average cloud cover in May
Fort Canby, WA
- Average cloud cover in May: 48
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 37).
Average visibility in May
Fort Canby, WA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





