May weather forecast
Monmouth, OR

Weather in May

May, the last month of the spring in Monmouth, is a comfortable month, with an average temperature varying between 65.8°F (18.8°C) and 42.4°F (5.8°C).

Temperature

In Monmouth, Oregon, the average high-temperature in May marginally rises from a moderate 57.7°F (14.3°C) in April to an enjoyable 65.8°F (18.8°C). The average low-temperature, is 42.4°F (5.8°C).

Humidity

In May, the average relative humidity in Monmouth is 77%.

Rainfall

In May, the rain falls for 11 days. Throughout May, 0.63" (16mm) of precipitation is accumulated. Throughout the year, there are 144.6 rainfall days, and 10.04" (255mm) of precipitation is accumulated.

Snowfall

In Monmouth, snow does not fall in April through November.

Daylight

The average length of the day in May is 14h and 52min.
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 Monmouth, sunrise is at 5:30 am and sunset at 8:50 pm PDT.

Sunshine

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

UV index

In Monmouth, the average daily maximum UV index in May is 4. A UV Index estimate of 3 to 5 represents a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in May interpret into the following advice:
Take precautions - Protection against skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
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FAQ

What is the temperature in May in Monmouth?

The average high-temperature, in May, is 65.8°F (18.8°C), while the average low-temperature is 42.4°F (5.8°C).

What is the average humidity in May in Monmouth?

In May, the average relative humidity is 77%.

How much does it rain in Monmouth in May?

In May, the rain falls for 11 days. Throughout May, 0.63" (16mm) of precipitation is accumulated.

When it does not snow in Monmouth?

In Monmouth, snow does not fall in April through November.

How many hours of daylight does Monmouth have in May?

In Monmouth, Oregon, the average day length in May is 14h and 52min.

What time are sunrise and sunset in May in Monmouth?

In May, on the first day of the month, sunrise is at 6:02 am and sunset at 8:17 pm. On the last day of the month, in Monmouth, sunrise is at 5:30 am and sunset at 8:50 pm PDT.

How many hours of sunshine does Monmouth have in May?

The average sunshine duration in May is 8.5h.

How high is the UV index in May in Monmouth?

The average daily maximum UV index in May in Monmouth, Oregon, is 4. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Monmouth, OR

Average temperature in May - Monmouth, OR
  • Average high temperature in May: 65.8°F

The warmest month (with the highest average high temperature) is August (80.8°F).
The month with the lowest average high temperature is December (44.2°F).

  • Average low temperature in May: 42.4°F

The month with the highest average low temperature is August (52.5°F).
The coldest month (with the lowest average low temperature) is December (34.2°F).

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Average pressure in May
Monmouth, OR

Average pressure in May - Monmouth, 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
Monmouth, OR

Average wind speed in May - Monmouth, OR
  • Average wind speed in May: 4.3mph

The windiest month (with the highest average wind speed) is March (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.9mph).

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Average humidity in May
Monmouth, OR

Average humidity in May - Monmouth, OR
  • Average humidity in May: 77%

The months with the highest relative humidity are February and December (88%).
The month with the lowest relative humidity is August (68%).

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Average rainfall in May
Monmouth, OR

Average rainfall in May - Monmouth, OR
  • Average rainfall in May: 0.63"

The wettest month (with the highest rainfall) is December (1.54").
The driest month (with the least rainfall) is July (0.12").

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Average rainfall days in May
Monmouth, OR

Average rainfall days in May - Monmouth, OR
  • Average rainfall days in May: 11 days

The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (4 days).

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Average snowfall in May
Monmouth, OR

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

The month with the highest snowfall is February (0.55").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in May
Monmouth, OR

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

The month with the highest number of snowfall days is February (1.8 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
Monmouth, OR

Average daylight in May / Average sunshine in May - Monmouth, OR
  • Average daylight in May: 14h and 52min

The month with the longest days is June (Average daylight: 15h and 32min).
The month with the shortest days is December (Average daylight: 8h and 52min).

  • Average sunshine in May: 8h and 30min

The months with the most sunshine are July and August (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 0min).

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Average sunshine days in May
Monmouth, OR

Average sunshine days in May - Monmouth, OR
  • Average sunshine days in May: 16.8 days

The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is March (9.7 days).

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Average UV index in May
Monmouth, OR

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

The months with the highest UV index are June, July and August (UV index 5).
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
Monmouth, OR

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

The months with the most cloud cover are February and March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 23).

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Average visibility in May
Monmouth, OR

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

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

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