Roseburg, OR climate
Roseburg has mild winters and warm summers. A typical July afternoon reaches 86°, a January night drops to 37°, and snow is almost unheard of.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Roseburg feels like
Winter
Spring
Summer
Fall
Roseburg weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 50° | 37° | 5.1" | 0 | 18 | 0 | 39° – 49° |
| February | 54° | 37° | 3.7" | 0 | 16 | 0 | 40° – 51° |
| March | 59° | 38° | 3.8" | 0 | 17 | 0 | 45° – 54° |
| April | 64° | 41° | 2.9" | 0 | 16 | 0 | 48° – 58° |
| May | 71° | 46° | 2.0" | 0 | 10 | 0 | 54° – 63° |
| June | 77° | 51° | 1.0" | 0 | 6 | 0 | 60° – 71° |
| July | 86° | 56° | 0.3" | 0 | 2 | 0 | 64° – 75° |
| August | 86° | 55° | 0.3" | 0 | 2 | 0 | 67° – 75° |
| September | 81° | 50° | 0.9" | 0 | 4 | 0 | 62° – 68° |
| October | 68° | 44° | 2.4" | 0 | 11 | 0 | 51° – 61° |
| November | 55° | 40° | 4.9" | 0 | 18 | 0 | 42° – 52° |
| December | 48° | 36° | 6.4" | 0 | 19 | 0 | 36° – 47° |
| Year | 67° | 44° | 33.6" | 0.0" | 138 | 0 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Roseburg
Roseburg gets 34 inches of rain and melted snow a year. December is the wettest month and July the driest. Rain or snow falls on about 138 days a year.
About 245 frost-free days a year
In half of years the last 32° night comes by March 19 and the first one by November 20. That leaves about 245 frost-free days for gardens, longer than 89% of U.S. towns.
Heating and cooling a home in Roseburg
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Roseburg, 87% of that work is heating and 13% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
How Roseburg compares
Compared with every U.S. town and city on TownTapestry, each counted once.
Warmer than it used to be
The last 30 years in Roseburg averaged 1.8° warmer than the 1900s. The biggest change is in August (+2.9°). The shift is larger than in 87% of U.S. towns.
Change by month1991–2020 average minus 1901–2000 average, at Roseburg’s spot on NOAA’s grid
How much a month can swing
A normal is an average, and real years wander around it. July swings the most: between 1991 and 2020 its average temperature ranged from 64° to 75°. September is the most reliable, staying within 6°.
Common questions about Roseburg’s climate
What is the coldest month in Roseburg?
December, with a typical high of 48° and a low of 36°.
What is the hottest month in Roseburg?
August, with a typical high of 86° and a low of 55°. About 31 days a year reach 90°.
How much snow does Roseburg get?
Almost none. A normal year brings 0.0 inches.
When is the first frost in Roseburg?
In half of years the first 32° night comes by November 20, and the last spring frost by March 19.
What is the rainiest month in Roseburg?
December, with 6.4 inches of rain and melted snow. The year totals 34 inches.
Temperatures and rainfall come from NOAA’s gridded climate normals for Roseburg itself (about a 3-mile square). Snow, frost dates and day counts come from NOAA’s weather station at Roseburg Kqen, OR (1 mi, snow) and Roseburg Rgnl Airport, OR (1 mi, frost, heat and degree days). Normals are 30-year averages, not a forecast. Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000.