Climate and monthly weather forecast
Monmouth, OR

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Weather in January

January, like December, is another chilly winter month in Monmouth, Oregon, with temperature in the range of an average high of 46.9°F (8.3°C) and an average low of 35.1°F (1.7°C). Monmouth, Oregon, commences January with an average high-temperature of a still chilly 46.9°F (8.3°C), maintaining a close resemblance to the previous month. Weather in January »

Weather in February

February, the last month of the winter in Monmouth, is another chilly month, with an average temperature ranging between min 35.1°F (1.7°C) and max 48.2°F (9°C). February registers an average high-temperature of a still frosty 48.2°F (9°C), slightly varied from January's 46.9°F (8.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Monmouth, Oregon, with an average temperature fluctuating between 52°F (11.1°C) and 36.9°F (2.7°C). Monmouth experiences a minor change to a fresh 52°F (11.1°C) in average high-temperature during March, closely reflecting February. Weather in March »

Weather in April

April in Monmouth, Oregon, is a mild spring month, with temperature in the range of an average low of 38.3°F (3.5°C) and an average high of 57.7°F (14.3°C). April signifies a subtle uplift in the average high-temperature, adjusting from a cool 52°F (11.1°C) in March to a refreshing 57.7°F (14.3°C). Weather in April »

Weather in May

May, the last month of the spring in Monmouth, is a comfortable month, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 42.4°F (5.8°C). May's arrival signals a modest temperature shift, moving from 57.7°F (14.3°C) in April to a still refreshing 65.8°F (18.8°C). Weather in May »

Weather in June

The first month of the summer, June, is an agreeable month in Monmouth, Oregon, with an average temperature varying between 70.9°F (21.6°C) and 46.8°F (8.2°C). Transitioning into June, Monmouth records an average high-temperature of an agreeable 70.9°F (21.6°C), almost identical to May's 65.8°F (18.8°C). Weather in June »

Weather in July

July is a moderately hot summer month in Monmouth, Oregon, with temperature in the range of an average high of 79.2°F (26.2°C) and an average low of 51.3°F (10.7°C). Monmouth's weather in July presents a minor rise in the average high-temperature, moving from an agreeable 70.9°F (21.6°C) in June to a warm 79.2°F (26.2°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Monmouth, Oregon, with an average temperature fluctuating between 80.8°F (27.1°C) and 52.5°F (11.4°C). Temperature records mark August as the warmest month, with highs averaging 80.8°F (27.1°C) and lows at 52.5°F (11.4°C). In August, the heat index is computed to be 84.2°F (29°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Monmouth, Oregon, with an average temperature varying between 73.8°F (23.2°C) and 50°F (10°C). The arrival of September correlates with a minor temperature reduction, down from August's warm 80.8°F (27.1°C) to a still moderately hot 73.8°F (23.2°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Monmouth, Oregon, with an average temperature ranging between max 61.7°F (16.5°C) and min 44.1°F (6.7°C). October's onset brings a reduction in the average high-temperature, from a moderately hot 73.8°F (23.2°C) in September to a comfortable 61.7°F (16.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another cool month in Monmouth, Oregon, with an average temperature varying between 50.9°F (10.5°C) and 39°F (3.9°C). The transition into November involves a decrease in the average high-temperature, falling from an enjoyable 61.7°F (16.5°C) in October to a cool 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter in Monmouth, is still a chilly month, with an average temperature ranging between max 44.2°F (6.8°C) and min 34.2°F (1.2°C). Monmouth witnesses the coldest weather in December, with temperatures averaging a high of 44.2°F (6.8°C) and a low of 34.2°F (1.2°C). Weather in December »
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Frequently asked questions

How many days does it rain in Monmouth?

In Monmouth, Oregon, during the entire year, the rain falls for 144.6 days and collects up to 10.04" (255mm) of precipitation.

When does it snow in Monmouth?

Months with snowfall in Monmouth, Oregon, are January through March and December.

How much does it snow in Monmouth?

In Monmouth, Oregon, during the entire year, snow falls for 4.5 days and aggregates up to 0.91" (23mm) of snow.

What are the months with the lowest UV index in Monmouth?

The months with the lowest UV index in Monmouth, Oregon, are January, February, November and December, with an average maximum UV index of 2.

What are the most humid months in Monmouth?

February and December, with an average relative humidity of 88%, are most humid months.

What is the snowiest month in Monmouth?

February is the month with the most snowfall. Snow falls for 1.8 days and accumulates 0.55" (14mm) of snow.

What is the month with the least sunshine in Monmouth?

February has the least sunshine of the year, with an average of 4h of sunshine.

When is Daylight Saving Time (DST) in Monmouth?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Monmouth, Oregon, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.

When it does not snow in Monmouth?

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

When are the longest days in Monmouth?

June has the longest days of the year in Monmouth, Oregon, with an average of 15h and 30min of daylight.

When is the highest UV index in Monmouth?

June through August, with an average maximum UV index of 5, are months with the highest UV index.

What is the driest month in Monmouth?

July is the month with the least rainfall in Monmouth, Oregon. Rain falls for 4.3 days and accumulates 0.12" (3mm) of precipitation.

What are the months with the most sunshine in Monmouth?

The months with the most sunshine in Monmouth, Oregon, are July and August, with an average of 10.9h of sunshine.

What part of the year is the hottest in Monmouth?

August, noted for its average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 52.5°F (11.4°C), is considered the warmest month in Monmouth, Oregon.

What is the least humid month in Monmouth?

The least humid month in Monmouth is August, with an average relative humidity of 68%.

What month is the coldest in Monmouth?

December is the month when Monmouth sees the average lowest temperatures, with a high of 44.2°F (6.8°C) and a low of 34.2°F (1.2°C).

What is the wettest month in Monmouth?

December is the month with the most rainfall. Rain falls for 16.5 days and accumulates 1.54" (39mm) of precipitation.

What is the month with the shortest days in Monmouth?

December has the shortest days of the year, with an average of 8h and 54min of daylight.

Average temperature
Monmouth, OR

Average temperature - Monmouth, OR

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).

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
Monmouth, OR

Average pressure - Monmouth, OR

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
Monmouth, OR

Average wind speed - Monmouth, OR

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
Monmouth, OR

Average humidity - Monmouth, OR

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
Monmouth, OR

Average rainfall - Monmouth, OR

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
Monmouth, OR

Average rainfall days - Monmouth, OR

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
Monmouth, OR

Average snowfall - Monmouth, OR

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
Monmouth, OR

Average snowfall days - Monmouth, OR

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 / Average sunshine
Monmouth, OR

Average daylight / Average sunshine - Monmouth, OR

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).

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
Monmouth, OR

Average sunshine days - Monmouth, OR

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
Monmouth, OR

Average UV index - Monmouth, OR

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 visibility
Monmouth, OR

Average visibility - Monmouth, OR

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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Monmouth, Oregon, USA

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