Climate and monthly weather forecastRoseburg, OR
Climate and monthly weather forecast
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 »Updated: Jun 4, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, February and December, with an average relative humidity of 87%, are most humid months.
In Roseburg, during the entire year, the rain falls for 105 days and collects up to 9.57" (243mm) of precipitation.
January through March, November and December are months with snowfall.
Throughout the year, there are 3.8 snowfall days, and 1.77" (45mm) of snow is accumulated.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
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.
April through October are months without snowfall.
With an average of 15h and 18min of daylight, June has the longest days of the year.
The months with the lowest humidity are July and August, with an average relative humidity of 71%.
The month with the least rainfall is July, when the rain falls for 3.5 days and typically collects 0.16" (4mm) of precipitation.
The month with the highest UV index is July, with an average maximum UV index of 6.
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.
August has the most sunshine of the year, with an average of 11.2h of sunshine.
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.
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).
December is the month with the most rainfall in Roseburg. Rain falls for 12.8 days and accumulates 1.46" (37mm) of precipitation.
With an average of 9h and 0min of daylight, December has the shortest days of the year.
December has the least sunshine of the year, with an average of 4.3h of sunshine.
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 in January:
30.12"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
30.08"Hg - Average pressure in May:
30.04"Hg - Average pressure in June:
30.03"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.11"Hg
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 in January:
3.9mph - Average wind speed in February:
3.7mph - Average wind speed in March:
3.9mph - Average wind speed in April:
3.7mph - Average wind speed in May:
3.7mph - Average wind speed in June:
3.7mph
- Average wind speed in July:
3.6mph - Average wind speed in August:
3.3mph - Average wind speed in September:
3.2mph - Average wind speed in October:
3.2mph - Average wind speed in November:
3.7mph - Average wind speed in December:
3.7mph
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
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 in January:
1.22" - Average rainfall in February:
1.34" - Average rainfall in March:
1.1" - Average rainfall in April:
0.94" - Average rainfall in May:
0.75" - Average rainfall in June:
0.43"
- Average rainfall in July:
0.16" - Average rainfall in August:
0.2" - Average rainfall in September:
0.43" - Average rainfall in October:
0.55" - Average rainfall in November:
0.98" - Average rainfall in December:
1.46"
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 in January:
12 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
11.3 days - Average rainfall days in May:
9.4 days - Average rainfall days in June:
6.1 days
- Average rainfall days in July:
3.5 days - Average rainfall days in August:
3.1 days - Average rainfall days in September:
4.3 days - Average rainfall days in October:
8 days - Average rainfall days in November:
9.7 days - Average rainfall days in December:
12.8 days
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
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 in January:
0.8 days - Average snowfall days in February:
1.5 days - Average snowfall days in March:
0.5 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.4 days - Average snowfall days in December:
0.5 days
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 in January:
9h and 24min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 18min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
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).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 24min - Average sunshine in March:
5h and 36min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 30min - Average sunshine in June:
9h and 30min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
11h and 12min - Average sunshine in September:
9h and 42min - Average sunshine in October:
5h and 48min - Average sunshine in November:
5h and 6min - Average sunshine in December:
4h and 18min
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 in January:
17.2 days - Average sunshine days in February:
14.6 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
16.3 days - Average sunshine days in May:
18.9 days - Average sunshine days in June:
20.6 days
- Average sunshine days in July:
24.3 days - Average sunshine days in August:
25.1 days - Average sunshine days in September:
24.2 days - Average sunshine days in October:
21.6 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
16.6 days
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
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 cloud cover
Roseburg, OR
The month with the most cloud cover is March (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 26).
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).
