May weather forecast
The Dalles, OR

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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

The beginning of May in The Dalles signals a rise in the average high-temperature, moving from a moderate 55.8°F (13.2°C) in April to a comfortable 65.8°F (18.8°C). The Dalles reports a marked divergence from daytime peaks throughout May, with lows averaging at a frosty 43.3°F (6.3°C).

Humidity

In The Dalles, the average relative humidity in May is 63%.

Rainfall

In May, the rain falls for 9.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated. Throughout the year, there are 133.5 rainfall days, and 16.93" (430mm) of precipitation is accumulated.

Snowfall

In The Dalles, Oregon, snow does not fall in April through October.

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, in The Dalles, sunrise is at 5:18 am and sunset at 8:46 pm PDT.

Sunshine

In The Dalles, the average sunshine in May is 10.9h.

UV index

In May, the average daily maximum UV index in The Dalles is 5. A UV Index estimate of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 5 in May translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
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Frequently asked questions

What is the average May temperature in The Dalles?

In The Dalles, in May, the average high-temperature is 65.8°F (18.8°C), and the average low-temperature is 43.3°F (6.3°C).

What is the average humidity in May in The Dalles?

In May, the average relative humidity in The Dalles, Oregon, is 63%.

How much does it rain in The Dalles in May?

In May, in The Dalles, the rain falls for 9.8 days. Throughout May, 0.87" (22mm) of precipitation is accumulated.

When it does not snow in The Dalles?

April through October are months without snowfall in The Dalles, Oregon.

How many hours of daylight does The Dalles have in May?

In May, the average day length in The Dalles is 14h and 56min.

When are sunrise and sunset in May in The Dalles?

On the first day of May, sunrise is at 5:51 am and sunset at 8:12 pm. On the last day of the month, sunrise is at 5:18 am and sunset at 8:46 pm PDT.

How many hours of sunshine does The Dalles have in May?

The average sunshine duration in May in The Dalles, Oregon, is 10.9h.

What is the UV index intensity in May in The Dalles?

In May, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
The Dalles, OR

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).

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Average pressure in May
The Dalles, OR

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).

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Average wind speed in May
The Dalles, OR

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).

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Average humidity in May
The Dalles, OR

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%).

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Average rainfall in May
The Dalles, OR

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").

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Average rainfall days in May
The Dalles, OR

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).

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Average snowfall in May
The Dalles, OR

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").

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Average snowfall days in May
The Dalles, OR

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).

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Average daylight in May /
Average sunshine in May
The Dalles, OR

Average daylight in May / Average sunshine in May - The Dalles, OR
  • Average daylight in May: 14h and 5min

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 5min

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).

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Average sunshine days in May
The Dalles, OR

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).

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Average UV index in May
The Dalles, OR

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).

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Average cloud cover in May
The Dalles, OR

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).

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Average visibility in May
The Dalles, OR

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).

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The Dalles, Oregon, USA

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