May weather forecastCornelius, OR

May

Weather in May

May, the last month of the spring in Cornelius, is a comfortable month, with an average temperature fluctuating between 44.4°F (6.9°C) and 67.1°F (19.5°C).

Temperature

May signifies a subtle uplift in the average high-temperature, adjusting from a mild 58.3°F (14.6°C) in April to a still refreshing 67.1°F (19.5°C). May, marked by an average low-temperature of 44.4°F (6.9°C), indicates a large temperature drop from the daytime peak.

Humidity

In Cornelius, the average relative humidity in May is 73%.

Rainfall

In Cornelius, during May, the rain falls for 13.6 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 173 rainfall days, and 29.49" (749mm) of precipitation is accumulated.

Snowfall

In Cornelius, snow does not fall in April through October.

Daylight

In May, the average length of the day is 14h and 56min.
On the first day of the month, sunrise is at 5:58 am and sunset at 8:19 pm. On the last day of May, in Cornelius, Oregon, sunrise is at 5:26 am and sunset at 8:53 pm PDT.

Sunshine

The average sunshine in May is 8.3h.

UV index

In May, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in May transforms into the following instructions:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. Stay sun-safe with clothing that is both closely woven and worn loosely.

Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The high-temperature, in May, in Cornelius, records 67.1°F (19.5°C), while the low-temperature is 44.4°F (6.9°C).

In Cornelius, the average relative humidity in May is 73%.

In May, the rain falls for 13.6 days. Throughout May, 1.73" (44mm) of precipitation is accumulated.

In Cornelius, snow does not fall in April through October.

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

On the first day of May, sunrise is at 5:58 am and sunset at 8:19 pm. On the last day of the month, sunrise is at 5:26 am and sunset at 8:53 pm PDT.

In May, the average sunshine duration is 8.3h.

In Cornelius, the average daily maximum UV index in May is 4. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A May J J A S O N D

Apr

May

Jun

Average high temperature

58.3°F

67.1°F

72.7°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

5.2mph

4.9mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

18.6

13.6

11.4

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

16.2

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Cornelius, OR

Average high temperature in May: 67.1°F

The warmest month (with the highest average high temperature) is August (81.5°F).
The month with the lowest average high temperature is December (43.9°F).

Average low temperature in May: 44.4°F

The month with the highest average low temperature is August (55.4°F).
The coldest month (with the lowest average low temperature) is December (34°F).

Average pressure in May
Cornelius, 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).

Average wind speed in May
Cornelius, OR

Average wind speed in May: 4.4mph

The windiest month (with the highest average wind speed) is March (5mph).
The calmest months (with the lowest average wind speed) are June, August and September (4.3mph).

Average humidity in May
Cornelius, OR

Average humidity in May: 73%

The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is August (64%).

Average rainfall in May
Cornelius, OR

Average rainfall in May: 1.73"

The wettest month (with the highest rainfall) is January (4.57").
The driest month (with the least rainfall) is August (0.31").

Average rainfall days in May
Cornelius, OR

Average rainfall days in May: 13.6 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (4.4 days).

Average snowfall in May
Cornelius, 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").

Average snowfall days in May
Cornelius, OR

Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.4 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
Cornelius, 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: 8h and 18min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).

Average sunshine days in May
Cornelius, OR

Average sunshine days in May: 16.2 days

The month with the most sunshine days is July (24.4 days).
The month with the least sunshine days is March (8.5 days).

Average UV index in May
Cornelius, 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).