May weather forecast
Blue River, OR

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Weather in May

The last month of the spring, May, is a refreshing month in Blue River, Oregon, with an average temperature ranging between min 40.6°F (4.8°C) and max 63.9°F (17.7°C).

Temperature

In Blue River, the onset of May comes with a modest high-temperature shift, transitioning from April's moderate 55.9°F (13.3°C) to a comfortable 63.9°F (17.7°C). Nighttime temperatures throughout May in Blue River, Oregon, register a significant deviation from the day's highs, averaging at a cold 40.6°F (4.8°C).

Humidity

In May, the average relative humidity in Blue River is 78%.

Rainfall

In Blue River, in May, it is raining for 13.8 days, with typically 2.17" (55mm) of accumulated precipitation. In Blue River, during the entire year, the rain falls for 167.6 days and collects up to 36.54" (928mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

The average length of the day in May is 14h and 47min.
On the first day of May, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:28 am and sunset at 8:45 pm PDT.

Sunshine

The average sunshine in May is 8.3h.

UV index

The average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum UV index of 4 during May translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses.
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Frequently asked questions

What is the usual temperature for Blue River in May?

The high-temperature, in May, in Blue River, is 63.9°F (17.7°C), while the low-temperature averages to 40.6°F (4.8°C).

What is the average humidity in May in Blue River?

The average relative humidity in May in Blue River, Oregon, is 78%.

How much does it rain in Blue River in May?

In May, in Blue River, Oregon, the rain falls for 13.8 days. Throughout May, 2.17" (55mm) of precipitation is accumulated.

When it does not snow in Blue River?

In Blue River, snow does not fall in May through October.

Does it snow in Blue River in May?

In May, in Blue River, Oregon, it doesn't snow. April is the latest month when it typically snows.

What is the average length of the day in May in Blue River?

The average day length in May in Blue River is 14h and 47min.

When are sunrise and sunset in May in Blue River?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 8:13 pm. On the last day of the month, in Blue River, sunrise is at 5:28 am and sunset at 8:45 pm PDT.

How many hours of sunshine does Blue River have in May?

In Blue River, the average sunshine duration in May is 8.3h.

What is the UV index reading in May in Blue River?

The average daily maximum UV index in May in Blue River, Oregon, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from exposure to Sun's UV rays.
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
Blue River, OR

Average temperature in May - Blue River, OR
  • Average high temperature in May: 63.9°F

The warmest month (with the highest average high temperature) is August (79.5°F).
The month with the lowest average high temperature is December (44.4°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).

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Average pressure in May
Blue River, OR

Average pressure in May - Blue River, OR
  • Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

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Average wind speed in May
Blue River, OR

Average wind speed in May - Blue River, OR
  • Average wind speed in May: 4.1mph

The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in May
Blue River, OR

Average humidity in May - Blue River, OR
  • Average humidity in May: 78%

The months with the highest relative humidity are February, March and December (86%).
The month with the lowest relative humidity is August (66%).

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Average rainfall in May
Blue River, OR

Average rainfall in May - Blue River, OR
  • Average rainfall in May: 2.17"

The wettest month (with the highest rainfall) is December (5.47").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in May
Blue River, OR

Average rainfall days in May - Blue River, OR
  • Average rainfall days in May: 13.8 days

The month with the highest number of rainy days is March (21.1 days).
The month with the least rainy days is July (4.1 days).

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Average snowfall in May
Blue River, OR

Average snowfall in May - Blue River, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is February (3.7").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in May
Blue River, OR

Average snowfall days in May - Blue River, OR
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (3.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in May /
Average sunshine in May
Blue River, OR

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

The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 2min

The month with the most sunshine is August (Average sunshine: 11h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 6min).

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Average sunshine days in May
Blue River, OR

Average sunshine days in May - Blue River, OR
  • Average sunshine days in May: 15.6 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is February (8.4 days).

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Average UV index in May
Blue River, OR

Average UV index in May - Blue River, OR
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is November (UV index 1).

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Average cloud cover in May
Blue River, OR

Average cloud cover in May - Blue River, OR
  • Average cloud cover in May: 49

The months with the most cloud cover are February and March (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 19).

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Average visibility in May
Blue River, OR

Average visibility in May - Blue River, OR
  • Average visibility in May: 5mi

The month with the highest visibility is August (6mi).
The months with the lowest visibility are February and April (4mi).

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Blue River, Oregon, USA

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