May weather forecast
Harrisburg, OR

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Weather in May

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

Temperature

Harrisburg's transition into May is noticed by a slight rise in the average high-temperature, advancing from a moderate 57.7°F (14.3°C) in April to a still refreshing 65.5°F (18.6°C). Harrisburg experiences a consistent, yet significant, drop from daily highs to a low-temperature of 41.2°F (5.1°C) throughout May.

Humidity

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

Rainfall

In Harrisburg, Oregon, in May, during 13.1 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. 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, Oregon.

Daylight

In May, the average length of the day is 14h and 48min.
On the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of May, in Harrisburg, sunrise is at 5:31 am and sunset at 8:49 pm PDT.

Sunshine

In May, the average sunshine in Harrisburg, Oregon, is 8.5h.

UV index

In May, the average daily maximum UV index in Harrisburg is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, a daily maximum UV index of 4 leads to the following instructions:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense.
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Frequently asked questions

What is the average May temperature in Harrisburg?

Harrisburg in May has an average high-temperature of 65.5°F (18.6°C) and an average low-temperature of 41.2°F (5.1°C).

What is the average humidity in May in Harrisburg?

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

How many days does it rain in May in Harrisburg?

In Harrisburg, Oregon, in May, it is raining for 13.1 days, with typically 1.81" (46mm) of accumulated precipitation.

When it does not snow in Harrisburg?

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

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

In May, the average day length in Harrisburg is 14h and 48min.

When are sunrise and sunset in May in Harrisburg?

On the first day of May, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:31 am and sunset at 8:49 pm PDT.

How long on average sun shines in May in Harrisburg?

In May, the average sunshine duration in Harrisburg, Oregon, is 8.5h.

How high is the UV index in May in Harrisburg?

The average daily maximum UV index in May is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to the Sun's 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
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"Hg

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

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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%

The 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").
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
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).
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
Harrisburg, OR

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

The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).

  • Average sunshine in May: 8h and 3min

The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

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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).
The 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).
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
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

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

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Harrisburg, Oregon, USA

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