May weather forecastThe Dalles, OR
May
Weather in May
May signifies the farewell of spring and embraces the arrival of early summer in The Dalles, Oregon. Throughout May, the city experiences relatively lower rainfall of around 0.87" (22mm) spread across almost ten days. An increase in temperature and sunshine hours establishes a warm, bright, and comfortable environment. The weather during this time supports a host of outdoor activities including bird watching, boating, and fishing, making May an inviting season for nature enthusiasts.Temperature
May's arrival coincides with a rise in the average high-temperature, moving from April's refreshing 55.8°F (13.2°C) to a comfortable 65.8°F (18.8°C). Despite the significant gap from daytime peaks, The Dalles experiences an average low-temperature of 43.3°F (6.3°C) in May.Humidity
In May, the average relative humidity is 63%.Rainfall
In May, the rain falls for 9.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated. Throughout the year, in The Dalles, there are 133.5 rainfall days, and 16.93" (430mm) of precipitation is accumulated.Snowfall
April through October are months without snowfall.Daylight
The average length of the day in May is 14h and 56min.On the first day of the month, sunrise is at 5:51 am and sunset at 8:12 pm. On the last day of May, sunrise is at 5:18 am and sunset at 8:46 pm PDT.
Sunshine
The average sunshine in May is 10.9h.UV index
In The Dalles, the average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: A typical high UV index of 5 in May suggests the following recommendations:
Put precautions into practice - Protective measures against sun-induced damage are advised. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
The Dalles, OR
- Average high temperature in May: 65.8°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (37°F).
- Average low temperature in May: 43.3°F
The month with the highest average low temperature is August (55.8°F).
The coldest month (with the lowest average low temperature) is December (27.1°F).
Average pressure in May
The Dalles, OR
- Average pressure in May: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is August (29.96"Hg).
Average wind speed in May
The Dalles, OR
- Average wind speed in May: 6.5mph
The windiest month (with the highest average wind speed) is June (7.1mph).
The calmest months (with the lowest average wind speed) are January and December (4.8mph).
Average humidity in May
The Dalles, OR
- Average humidity in May: 63%
The months with the highest relative humidity are January and December (85%).
The months with the lowest relative humidity are July and August (51%).
Average rainfall in May
The Dalles, OR
- Average rainfall in May: 0.87"
The wettest month (with the highest rainfall) is January (2.99").
The driest month (with the least rainfall) is July (0.16").
Average rainfall days in May
The Dalles, OR
- Average rainfall days in May: 9.8 days
The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (3.2 days).
Average snowfall in May
The Dalles, OR
- Average snowfall in May: 0"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in May
The Dalles, OR
- Average snowfall days in May: 0 days
The month with the highest number of snowfall days is December (4.4 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
The Dalles, OR
- Average daylight in May: 14h and 54min
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: 10h and 54min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in May
The Dalles, OR
- Average sunshine days in May: 18.4 days
The month with the most sunshine days is July (26.8 days).
The month with the least sunshine days is March (10.6 days).
Average UV index in May
The Dalles, OR
- Average UV index in May: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in May
The Dalles, OR
- Average cloud cover in May: 28
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 10).
Average visibility in May
The Dalles, 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).
