May weather forecast
Harrisburg, OR

Weather in May

May, the last month of the spring, in Harrisburg, is an enjoyable month, with average temperature varying between 65.5°F (18.6°C) and 41.2°F (5.1°C).

Temperature

In Harrisburg, the average high-temperature slightly increases, from a mild 57.7°F (14.3°C) in April, to a comfortable 65.5°F (18.6°C). In May, the average low-temperature is 41.2°F (5.1°C).

Humidity

In May, the average relative humidity is 78%.

Rainfall

In Harrisburg, Oregon,, it is raining for 13.1 days, with typically 1.81" (46mm) of accumulated precipitation. In Harrisburg, during the entire year, the rain falls for 161.8 days and collects up to 28.82" (732mm) of precipitation.

Snowfall

April through October are months without snowfall in Harrisburg.

Daylight

In May, the average length of the day is 14.8h.

Sunshine

In Harrisburg, the average sunshine is 8.5h.

UV index

In Harrisburg, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for the average person.
Note: The average daily UV index of 4 transform into the following instructions:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.
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FAQ

What is the average humidity in May in Harrisburg?

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

How much does it rain in Harrisburg in May?

In May, the rain falls for 13.1 days. Throughout May, 1.81" (46mm) of precipitation is accumulated.

When it does not snow in Harrisburg?

In Harrisburg snow does not fall in April through October.

What is the average length of the day in May in Harrisburg?

The average length of the day in May is 14.8h.

How many hours of sunshine does Harrisburg have in May?

The average sunshine in May is 8.5h.

What is the UV index reading in May in Harrisburg?

In May, the average daily maximum UV index in Harrisburg, Oregon, is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe exposure to the Sun's UV rays.

Average temperature in May
Harrisburg, OR

Average temperature in May - Harrisburg, OR
  • Average high temperature in May: 65.5°F

The warmest month (with the highest average high temperature) is August (81.1°F).
The month with the lowest average high temperature is December (45.7°F).

  • Average low temperature in May: 41.2°F

The month with the highest average low temperature is August (51.1°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure in May
Harrisburg, OR

Average pressure in May - Harrisburg, OR
  • Average pressure in May: 30.04"

The month with the highest atmospheric pressure is January (30.11").
Months with the lowest atmospheric pressure are August and September (30.01").

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Average wind speed in May
Harrisburg, OR

Average wind speed in May - Harrisburg, OR
  • Average wind speed in May: 4.2mph

The windiest month (with the highest average wind speed) is March (4.8mph).
The calmest month (with the lowest average wind speed) is September (3.8mph).

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Average humidity in May
Harrisburg, OR

Average humidity in May - Harrisburg, OR
  • Average humidity in May: 78%

Months with the highest relative humidity are January, February, March and December (87%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in May
Harrisburg, OR

Average rainfall in May - Harrisburg, OR
  • Average rainfall in May: 1.81"

The wettest month (with the highest rainfall) is December (4.37").
The driest month (with the least rainfall) is July (0.2").

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Average rainfall days in May
Harrisburg, OR

Average rainfall days in May - Harrisburg, OR
  • Average rainfall days in May: 13.1 days

The month with the highest number of rainy days is March (20 days).
The month with the least rainy days is August (3.6 days).

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Average snowfall in May
Harrisburg, OR

Average snowfall in May - Harrisburg, OR
  • Average snowfall in May: 0"

The month with the highest snowfall is February (1.81").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in May
Harrisburg, OR

Average snowfall days in May - Harrisburg, OR
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2 days).
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
Harrisburg, OR

Average daylight in May / Average sunshine in May - Harrisburg, OR
  • Average daylight in May: 14.8h

The month with the longest days is June (Average daylight: 15.5h).
The month with the shortest days is December (Average daylight: 8.9h).

  • Average sunshine in May: 8.5h

The month with the most sunshine is August (Average sunshine: 11.1h).
The month with the least sunshine is February (Average sunshine: 4h).

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Average sunshine days in May
Harrisburg, OR

Average sunshine days in May - Harrisburg, OR
  • Average sunshine days in May: 15.3 days

The month with the most sunshine days is July (26.2 days).
Months with the least sunshine days are February and March (9.4 days).

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Average UV index in May
Harrisburg, OR

Average UV index in May - Harrisburg, OR
  • Average UV index in May: 4

The month with the highest UV index is July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in May
Harrisburg, OR

Average cloud cover in May - Harrisburg, OR
  • Average cloud cover in May: 49

The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 22).

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Average visibility in May
Harrisburg, OR

Average visibility in May - Harrisburg, OR
  • Average visibility in May: 5mi

Months with the highest visibility are May, June, July, August, September, October and November (5mi).
Months with the lowest visibility are January, February, March, April and December (4mi).

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