Climate and monthly weather forecast
Jacksonville, OR

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Weather in January

January, like December, is another chilly winter month in Jacksonville, Oregon, with an average temperature fluctuating between 46.4°F (8°C) and 30.7°F (-0.7°C). January brings a marginal elevation to a still frosty 46.4°F (8°C) from December's 44.4°F (6.9°C) in Jacksonville's average high-temperatures. Weather in January »

Weather in February

The last month of the winter, February, is another chilly month in Jacksonville, Oregon, with an average temperature ranging between max 48°F (8.9°C) and min 31.1°F (-0.5°C). February's advent presents an average high-temperature of a still frosty 48°F (8.9°C), indicating a slight variation from the conditions of the previous month. Weather in February »

Weather in March

The first month of the spring, March, is a fresh month in Jacksonville, Oregon, with temperature in the range of an average high of 51.3°F (10.7°C) and an average low of 32.9°F (0.5°C). The commencement of March notes an average high-temperature of a fresh 51.3°F (10.7°C), exhibiting little difference from the previous month. Weather in March »

Weather in April

April in Jacksonville, Oregon, is a mild spring month, with an average temperature varying between 35.1°F (1.7°C) and 57.2°F (14°C). Jacksonville's weather in April shows a minor rise in the average high-temperature, moving slightly up from March's fresh 51.3°F (10.7°C) to a mild 57.2°F (14°C). Weather in April »

Weather in May

May, the last month of the spring in Jacksonville, is a refreshing month, with an average temperature varying between 66°F (18.9°C) and 39.2°F (4°C). May signals a minor shift in the average high-temperature, moving from April's refreshing 57.2°F (14°C) to an enjoyable 66°F (18.9°C). Weather in May »

Weather in June

June, the first month of the summer in Jacksonville, is an agreeable month, with an average temperature varying between 73°F (22.8°C) and 43.5°F (6.4°C). Jacksonville in June denotes a subtle temperature transition, adjusting from an average high of an enjoyable 66°F (18.9°C) in May to a pleasant 73°F (22.8°C). Weather in June »

Weather in July

July is a warm summer month in Jacksonville, Oregon, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 84°F (28.9°C). Jacksonville's weather shows a temperature rise with the arrival of July, moving from an agreeable 73°F (22.8°C) in June to a warm 84°F (28.9°C). Weather in July »

Weather in August

The last month of the summer, August, is another warm month in Jacksonville, Oregon, with an average temperature ranging between min 49.5°F (9.7°C) and max 85.1°F (29.5°C). August, characterized by an average high temperature of 85.1°F (29.5°C) and a low temperature of 49.5°F (9.7°C), is generally the warmest month. The heat index in August is evaluated at a hot 89.6°F (32°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Jacksonville, Oregon, with an average temperature ranging between max 77.5°F (25.3°C) and min 45.7°F (7.6°C). Start of September brings a slight shift in the average high-temperature, dipping a bit from August's 85.1°F (29.5°C) to a still warm 77.5°F (25.3°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Jacksonville, Oregon, with an average temperature fluctuating between 64.8°F (18.2°C) and 40.1°F (4.5°C). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 77.5°F (25.3°C) in September to a comfortable 64.8°F (18.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a fresh month in Jacksonville, Oregon, with an average temperature fluctuating between 34.3°F (1.3°C) and 52.7°F (11.5°C). A subtle decrease in the average high-temperature marks November, falling from October's enjoyable 64.8°F (18.2°C) to a cool 52.7°F (11.5°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Jacksonville, Oregon, with temperature in the range of an average low of 29.3°F (-1.5°C) and an average high of 44.4°F (6.9°C). With an average high-temperature of 44.4°F (6.9°C) and an average low-temperature of 29.3°F (-1.5°C), December is the coldest month. Weather in December »
Updated: Jul 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month in Jacksonville?

The months with the highest humidity are January and December, with an average relative humidity of 83%.

How much does it rain?

In Jacksonville, during the entire year, the rain falls for 130.2 days and collects up to 19.17" (487mm) of precipitation.

When does it snow?

January through April, November and December are months with snowfall.

How many days does it snow?

Throughout the year, in Jacksonville, there are 14.2 snowfall days, and 8.15" (207mm) of snow is accumulated.

What is the month with the lowest UV index?

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

What is the snowiest month?

The month with the most snowfall is February, when snow falls for 4.8 days and typically aggregates up to 2.64" (67mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Jacksonville, snow does not fall in May through October.

When are the longest days?

June has the longest days of the year, with an average of 15h and 12min of daylight.

What is the driest month?

The month with the least rainfall is July, when the rain falls for 3.8 days and typically collects 0.2" (5mm) of precipitation.

What is the month with the most sunshine?

July and August, with an average of 11.9h of sunshine, are months with the most sunshine.

What is the month with the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 6.

What is the hottest time of year?

Temperature readings reach their annual highs in August, averaging 85.1°F (29.5°C) and a minimum average of 49.5°F (9.7°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 59%.

What month is the coldest?

Jacksonville's coldest temperatures are experienced in December, with average high temperatures of 44.4°F (6.9°C) and lows of 29.3°F (-1.5°C).

What is the wettest month?

The month with the most rainfall is December, when the rain falls for 14.4 days and typically aggregates up to 3.11" (79mm) of precipitation.

What is the month with the shortest days?

With an average of 9h and 6min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

With an average of 5.3h of sunshine, December has the least sunshine of the year in Jacksonville.

Average temperature
Jacksonville, OR

Average temperature - Jacksonville, OR

The warmest month (with the highest average high temperature) is August (85.1°F).
The month with the lowest average high temperature is December (44.4°F).

The month with the highest average low temperature is August (49.5°F).
The coldest month (with the lowest average low temperature) is December (29.3°F).

Average pressure
Jacksonville, OR

Average pressure - Jacksonville, OR

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is August (29.98"Hg).

Average wind speed
Jacksonville, OR

Average wind speed - Jacksonville, OR

The windiest months (with the highest average wind speed) are January and March (4.2mph).
The calmest months (with the lowest average wind speed) are August, September and October (3.4mph).

Average humidity
Jacksonville, OR

Average humidity - Jacksonville, OR

The months with the highest relative humidity are January and December (83%).
The month with the lowest relative humidity is August (59%).

Average rainfall
Jacksonville, OR

Average rainfall - Jacksonville, OR

The wettest month (with the highest rainfall) is December (3.11").
The driest month (with the least rainfall) is July (0.2").

Average rainfall days
Jacksonville, OR

Average rainfall days - Jacksonville, OR

The month with the highest number of rainy days is March (17.8 days).
The month with the least rainy days is August (3.7 days).

Average snowfall
Jacksonville, OR

Average snowfall - Jacksonville, OR

The month with the highest snowfall is February (2.64").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days
Jacksonville, OR

Average snowfall days - Jacksonville, OR

The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August and October (0 days).

Average daylight / Average sunshine
Jacksonville, OR

Average daylight / Average sunshine - Jacksonville, OR

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

The months with the most sunshine are July and August (Average sunshine: 11h and 54min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).

Average sunshine days
Jacksonville, OR

Average sunshine days - Jacksonville, OR

The month with the most sunshine days is August (25.3 days).
The month with the least sunshine days is March (11.2 days).

Average UV index
Jacksonville, OR

Average UV index - Jacksonville, OR

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).

Average visibility
Jacksonville, OR

Average visibility - Jacksonville, OR

The months with the highest visibility are July, August, September and October (6mi).
The months with the lowest visibility are January, February, March, April, May, June, November and December (5mi).

Jacksonville, Oregon, USA

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