Climate and monthly weather forecast
Roseburg, OR

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The climate of Roseburg

Situated in Oregon, USA, Roseburg showcases a Mediterranean climate with warm summers as per Köppen climate classification, specified as Csb. Relatively moderate round the year, this climate offers a pleasant mix of distinct seasons while ensuring the extremes remain at bay.

Throughout the year, temperatures in Roseburg fluctuate from a mild 33.3°F (0.7°C) to a rather warm 80.8°F (27.1°C). Winter gives way to cool temperatures and the months from December to February can expect lows of about 34.3°F (1.3°C) to 33.3°F (0.7°C). But to look at the brighter side, the days do show a rise in temperature, reaching as high as 48.4°F (9.1°C) to 52.7°F (11.5°C). As the year progresses, the mercury level gradually escalates with July and August witnessing the warmest temperatures hovering from 79.3°F (26.3°C) to 80.8°F (27.1°C).

An important factor to consider while assessing the climate in Roseburg is the rainfall which varies between 0.16" (4mm) to 1.46" (37mm) over the year. Winter months record the maximum precipitation, with December and January receiving rainfall of 1.46" (37mm) and 1.22" (31mm) respectively. To balance this out, July gives you a drier atmosphere with a minimal rainfall of just about 0.16" (4mm).

The best time to visit Roseburg

Considering the comfortable weather and ample sunshine hours., the months beneficial for planning a trip to Roseburg would be from mid-June to early September. Temperature during this time maintains a comfortable range, reaching up to a warm 80.8°F (27.1°C) in August while the minimum does not go below 46.9°F (8.3°C) in June. Besides, this season experiences the least amount of precipitation translating to a drier atmosphere suitable for outdoor activities. Sunshine lasts for a whopping 11.1 hours to 11.2 hours per day providing ample daylight to explore the city.

The worst time to visit Roseburg

Tourists might want to avoid visiting Roseburg during the winter season, specifically from December to February. While the average high temperature will not go beyond 52.7°F (11.5°C), the nights can get quite chilly with temperatures dropping to as low as 33.3°F (0.7°C) in December. In addition, December sees significant rainfall of 1.46" (37mm) making outdoor activities somewhat discomforting.

Spring weather in Roseburg

Spring in Roseburg is pleasantly mild with temperatures nudging upwards from 52.7°F (11.5°C) in March to 64.9°F (18.3°C) by May. The minimum temperature too sees an incremental rise from 34.5°F (1.4°C) to 39°F (3.9°C). Rainfall during spring varies from 1.1" (28mm) in March to 0.75" (19mm) in May. March does witness a higher number of rainy days, approximately 13.5 days, which gradually decrease to 9.4 days by May.

Summer weather in Roseburg

Rosseburg's summer months, from June to August, bring a warm, welcoming weather with temperature peaking at 80.8°F (27.1°C) in August whereas 46.9°F (8.3°C) is the lowest recorded in June. Summers witness a significant reduction in the number of rainy days and also in rainfall, reaching as low as 0.16" (4mm) in July. The days are long and sunny with sunlight for almost 11.1 hours in July, offering ample daylight.

Autumn weather in Roseburg

Autumn season in Roseburg experiences a gradual fall in temperature from 74.3°F (23.5°C) in September to 52.7°F (11.5°C) in November. The corresponding minimum temperatures too follow a similar trend, dwindling from 45°F (7.2°C) to as low as 37.2°F (2.9°C). Rainfall during this season gradually increases from 0.43" (11mm) in September to 0.98" (25mm) in November.

Winter weather in Roseburg

Roseburg's winter months - December, January and February - experience lower temperatures, settling at approximately 48.4°F (9.1°C) to 45.9°F (7.7°C) in the day while hitting lows ranging from 34.3°F (1.3°C) to 33.3°F (0.7°C) during nights. Winter is also characterized by the annual peak in rainfall, notably 1.46" (37mm) in December, and sees an increased number of rainy days, around 12.8 days in December.

Weather in January

The chilly presence of winter is felt in Roseburg during January, with average temperatures running low and relative humidity peaking at 87%. Inclement weather comprising both snowfall of 0.28" (7mm) and rainfall of 1.22" (31mm) is observed as cold fronts pass over the region. Weather in January »

Weather in February

Roseburg's February weather experiences a slight change from January, with temperatures beginning to rise. The region records the most substantial snowfall of the year at an average 0.39" (10mm). This winter month likewise welcomes the rainy season, matching the previous month's humidity levels. Weather in February »

Weather in March

As March arrives, Roseburg witnesses the transition from winter to spring. There is a significant decline in snowfall, dropping to a mere 0.12" (3mm) but rainfall continues to be a defining feature with 1.1" (28mm) precipitation on average. Weather in March »

Weather in April

April in Roseburg brings a breath of fresh spring air. The city's weather demonstrates clear signs of warming, with a conspicuous drop in both rainfall and humidity. Despite a decrease in cloud cover percentage, visibility remains consistent at 4 miles. Weather in April »

Weather in May

May is characterized by a warm and dry spell in Roseburg. The declining rainfall - now down to an average of 0.75" (19mm) - ushers in the perfect season for outdoor exploration. Sunshine hours increase substantially, and the UV index also begins to rise. Weather in May »

Weather in June

June announces the arrival of the summer season in Roseburg. The city enjoys the longest daylight hours of the year with 15.3 hours of light each day. The weather is fairly warm and dry as the city registers a mere 0.43" (11mm) of rainfall. Weather in June »

Weather in July

Summer is in full swing in Roseburg during July. With average peak temperatures soaring to 79.3°F (26.3°C), July stands as the hottest month of the year. The UV index reaches its annual high, nudging residents towards necessary protective measures. Weather in July »

Weather in August

Following in the footsteps of July, August maintains high summer temperatures in Roseburg. While the days remain warm, the city prepares to bid summer farewell, as daylight hours start to slightly recede. The wind speed takes a slight dip, adding to the serene summer evenings. Weather in August »

Weather in September

September witnesses the arrival of autumn in Roseburg, bringing a noticeable drop in temperature. Rainfall occurrences increase to 0.43" (11mm), marking the end of the dry season. Despite shorter daylight spans, Roseburg still basks in ample sunshine, making it an enjoyable time for outdoor activities. Weather in September »

Weather in October

In October, Roseburg embraces a definitive autumn atmosphere. The weather undergoes subsequent cooling, and the rainfall is now at a noticeable 0.55" (14mm). Daylight hours continue to recede, giving way to lengthier nights. A marked increase in cloud cover, along with a resurgence in wind speed, accentuates the autumnal mood. Weather in October »

Weather in November

November brings Roseburg to the fringe of winter. The city witnesses a substantial surge in rainfall, reaching almost 1 inch, and temperatures plateau towards lower averages. With the UV index returning to a low, locals transition into their winter routines. Weather in November »

Weather in December

In December, Roseburg finds itself in the midst of winter. There's a notable increase in both snowfall and rainfall, with precipitation totals of 0.47" (12mm) and 1.46" (37mm) respectively. The city experiences the shortest daylight hours of the year, cutting down on outdoor activities. Weather in December »

Frequently asked questions

What is the most humid month?

January, February and December, with an average relative humidity of 87%, are most humid months.

How much does it rain?

In Roseburg, during the entire year, the rain falls for 105 days and collects up to 9.57" (243mm) of precipitation.

When does it snow?

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

How much does it snow?

Throughout the year, there are 3.8 snowfall days, and 1.77" (45mm) of snow is accumulated.

What are the months with the lowest UV index?

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

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?

April through October are months without snowfall.

When are the longest days?

With an average of 15h and 18min of daylight, June has the longest days of the year.

What are the least humid months in Roseburg?

The months with the lowest humidity are July and August, with an average relative humidity of 71%.

What is the driest month?

The month with the least rainfall is July, when the rain falls for 3.5 days and typically collects 0.16" (4mm) of precipitation.

When is the highest UV index?

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

What is the hottest time of year in Roseburg?

August, with an average high of 80.8°F (27.1°C) and a low of 47.8°F (8.8°C), signifies the warmest month of the year.

What month has the most sunshine?

August has the most sunshine of the year, with an average of 11.2h of sunshine.

When does it snow the most?

The month with the most snowfall is November, when snow falls for 0.4 days and typically aggregates up to 0.51" (13mm) of snow.

What are the coldest months?

December proves to be the coldest month in Roseburg, recording an average maximum temperature of 45.9°F (7.7°C) and a minimum temperature of 33.3°F (0.7°C).

What is the wettest month?

December is the month with the most rainfall in Roseburg. Rain falls for 12.8 days and accumulates 1.46" (37mm) of precipitation.

What is the month with the shortest days in Roseburg?

With an average of 9h and 0min of daylight, December has the shortest days of the year.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 4.3h of sunshine.

Average temperature
Roseburg, OR

Average temperature - Roseburg, 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 (45.9°F).

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (33.3°F).

Average pressure
Roseburg, OR

Average pressure - Roseburg, OR

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

Average wind speed
Roseburg, OR

Average wind speed - Roseburg, OR

The windiest months (with the highest average wind speed) are January and March (3.9mph).
The calmest months (with the lowest average wind speed) are September and October (3.2mph).

Average humidity
Roseburg, OR

Average humidity - Roseburg, OR

The months with the highest relative humidity are January, February and December (87%).
The months with the lowest relative humidity are July and August (71%).

Average rainfall
Roseburg, OR

Average rainfall - Roseburg, OR

The wettest month (with the highest rainfall) is December (1.46").
The driest month (with the least rainfall) is July (0.16").

Average rainfall days
Roseburg, OR

Average rainfall days - Roseburg, OR

The month with the highest number of rainy days is March (13.5 days).
The month with the least rainy days is August (3.1 days).

Average snowfall
Roseburg, OR

Average snowfall - Roseburg, OR

The month with the highest snowfall is November (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days
Roseburg, OR

Average snowfall days - Roseburg, OR

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

Average daylight / Average sunshine
Roseburg, OR

Average daylight / Average sunshine - Roseburg, OR

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 0min).

The month with the most sunshine is August (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 4h and 18min).

Average sunshine days
Roseburg, OR

Average sunshine days - Roseburg, OR

The month with the most sunshine days is August (25.1 days).
The month with the least sunshine days is February (14.6 days).

Average UV index
Roseburg, OR

Average UV index - Roseburg, 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
Roseburg, OR

Average visibility - Roseburg, OR

The months with the highest visibility are July and August (5mi).
The months with the lowest visibility are January, February, March, April, May, June, September, October, November and December (4mi).

Roseburg, Oregon, USA

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