May weather forecastMerlin, OR

May

Weather in May

The last month of the spring, May, is an enjoyable month in Merlin, Oregon, with an average temperature varying between 39.7°F (4.3°C) and 66.7°F (19.3°C).

Temperature

May's onset brings a minor rise in the average high-temperature, moving from a refreshing 57.9°F (14.4°C) in April to an enjoyable 66.7°F (19.3°C). Marked by a significant drop from the daytime highs, Merlin's average low-temperature in May stands at an icy 39.7°F (4.3°C).

Humidity

The average relative humidity in May is 74%.

Rainfall

In May, the rain falls for 11.8 days. Throughout May, 1.69" (43mm) of precipitation is accumulated. In Merlin, during the entire year, the rain falls for 135.3 days and collects up to 23.54" (598mm) of precipitation.

Snowfall

May through October are months without snowfall.

Daylight

In May, the average length of the day is 14h and 38min.
On the first day of May, sunrise is at 6:07 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:44 pm PDT.

Sunshine

In Merlin, the average sunshine in May is 9.9h.

UV index

The average daily maximum UV index in May 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: In May, the maximum UV index of 4 suggests these recommendations:
Proceed with care. Light skin individuals may be exposed to burns in fewer than 30 minutes. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.

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

Frequently asked questions

Merlin in May has an average high-temperature of 66.7°F (19.3°C) and an average low-temperature of 39.7°F (4.3°C).

In May, the average relative humidity is 74%.

In Merlin, in May, it is raining for 11.8 days, with typically 1.69" (43mm) of accumulated precipitation.

May through October are months without snowfall.

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

The average day length in May is 14h and 38min.

In May, on the first day of the month, sunrise is at 6:07 am and sunset at 8:14 pm. On the last day of the month, sunrise is at 5:38 am and sunset at 8:44 pm PDT.

In Merlin, the average sunshine duration in May is 9.9h.

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

Today

Tomorrow

Long-term

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

Apr

May

Jun

Average high temperature

57.9°F

66.7°F

73.8°F

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

4.4mph

4.2mph

4.5mph

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

11.7

16.3

19.1

Average UV index

Average cloud cover

Average visibility

Average temperature in May
Merlin, OR

Average high temperature in May: 66.7°F

The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).

Average low temperature in May: 39.7°F

The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).

Average pressure in May
Merlin, OR

Average pressure in May: 30.03"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

Average wind speed in May
Merlin, OR

Average wind speed in May: 3.7mph

The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).

Average humidity in May
Merlin, OR

Average humidity in May: 74%

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).

Average rainfall in May
Merlin, OR

Average rainfall in May: 1.69"

The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").

Average rainfall days in May
Merlin, OR

Average rainfall days in May: 11.8 days

The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).

Average snowfall in May
Merlin, OR

Average snowfall in May: 0"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in May
Merlin, OR

Average snowfall days in May: 0 days

The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in May /
Average sunshine in May
Merlin, OR

Average daylight in May: 14h and 36min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

Average sunshine in May: 9h and 54min

The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).

Average sunshine days in May
Merlin, OR

Average sunshine days in May: 16.3 days

The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).

Average UV index in May
Merlin, 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).