Climate

Newberg, like Portland, has a warm-summer Mediterranean climate (Köppen Csb) with cool and cloudy winters, and warm and dry summers.^[13] This climate is characterized by having overcast, wet, and changing weather conditions in fall, winter, and spring, as Newberg lies in the direct path of the stormy westerly flow, and mild and dry summers when the Pacific High reaches its northernmost point in mid summer.^[14] According to the Köppen climate classification, Newberg falls within the dry-summer temperate zone (Csb).^[14][15] with a USDA Plant Hardiness Zones between 8b and 9a.^[16] Other climate systems, such as the Trewartha climate classification, place it within the oceanic zone (Do), like much of the Pacific Northwest and Western Europe.^[17]

Winters are cool, cloudy, and rainy. The coldest months are December and January, with an average daily high of 46.0 °F (7.8 °C), although overnight lows usually remain above freezing by a few degrees. Evening temperatures fall to or below freezing 33 nights per year on average, but very rarely to or below 18 °F (−8 °C). There are only 2.1 days per year where the daytime high temperature fails to rise above freezing. The lowest overnight temperature ever recorded was −3 °F (−19 °C).

Annual snowfall in Newberg falls during the December-to-March time frame. Newport, for example, has more frequent snow than Portland, due in part to higher elevations near the West Hills and Mount Tabor, so can experience a dusting of snow while downtown Portland receives no accumulation at all.

Summers in Newberg are warm, occasionally hot, dry, and sunny, though the sunny warm weather is short-lived, from mid June through early September. The months of June, July, August and September account for a combined 4.78 inches (121 mm) of total rainfall – of the 39.95 in (1,015 mm) of the precipitation that falls throughout the year. The warmest month is July, with an average high temperature of 80.0 °F (26.7 °C). Because of its inland location 70 miles (110 km) from the coast, as well as the protective nature of the Oregon Coast Range to its west, Newberg summers are less susceptible to the moderating influence of the nearby Pacific Ocean. Consequently, Portland experiences heat waves on rare occasion, with temperatures rising into the 90 °F (32 °C) for a few days. However, on average, temperatures reach or exceed 80 °F (27 °C) on only 56 days per year, of which about 12 days will reach 90 °F (32 °C) and only 1–2 days will reach 100 °F (38 °C).

Spring and fall can bring variable weather, including warm fronts that send temperatures surging above 80 °F (27 °C) and cold snaps that plunge daytime temperatures into the 40s °F (4–9 °C). However, lengthy stretches of overcast days beginning in mid fall and continuing into mid spring are most common. Rain often falls as a light drizzle for several consecutive days at a time, contributing to 152 days on average with measurable (≥0.01 in or 0.25 mm) precipitation annually.

2010 census

As of the census^[24] of 2010, there were 22,068 people, 7,736 households, and 5,398 families living in the city. The population density was 3,798.3 inhabitants per square mile (1,466.5/km²). There were 8,265 housing units at an average density of 1,422.5 per square mile (549.2/km²). The racial makeup of the city was 85.9% White, 0.8% African American, 0.8% Native American, 2.2% Asian, 0.2% Pacific Islander, 7.0% from other races, and 3.1% from two or more races. Hispanic or Latino of any race were 13.5% of the population.

There were 7,736 households, of which 37.4% had children under the age of 18 living with them, 53.1% were married couples living together, 12.0% had a female householder with no husband present, 4.7% had a male householder with no wife present, and 30.2% were non-families. 23.2% of all households were made up of individuals, and 9.8% had someone living alone who was 65 years of age or older. The average household size was 2.66 and the average family size was 3.12.

The median age in the city was 32.8 years. 25.2% of residents were under the age of 18; 13.8% were between the ages of 18 and 24; 27.1% were from 25 to 44; 21.9% were from 45 to 64; and 12% were 65 years of age or older. The gender makeup of the city was 48.6% male and 51.4% female.

2000 census

As of the census^[4] of 2000, there were 18,064 people, 6,099 households, and 4,348 families living in the city. The population density was 3,599.4 inhabitants per square mile (1,389.7/km²). There were 6,435 housing units at an average density of 1,282.2 per square mile (495.1/km²). The racial makeup of the city was 90.49% White, 0.35% African American, 0.64% Native American, 1.04% Asian, 0.17% Pacific Islander, 5.06% from other races, and 2.24% from two or more races. Hispanic or Latino of any race were 10.52% of the population.

There were 6,099 households, out of which 40.2% had children under the age of 18 living with them, 54.5% were married couples living together, 11.9% had a female householder with no husband present, and 28.7% were non-families. 21.7% of all households were made up of individuals, and 8.8% had someone living alone who was 65 years of age or older. The average household size was 2.76 and the average family size was 3.20.

In the city, the population was spread out, with 27.7% under the age of 18, 15.0% from 18 to 24, 29.8% from 25 to 44, 16.9% from 45 to 64, and 10.6% who were 65 years of age or older. The median age was 30 years. For every 100 females, there were 93.7 males. For every 100 females age 18 and over, there were 89.8 males.

The median income for a household in the city was $44,206.00, and the median income for a family was $51,084. Males had a median income of $34,099 versus $23,571 for females. The per capita income for the city was $16,873. About 4.3% of families and 6.6% of the population were below the poverty line, including 7.0% of those under age 18 and 6.1% of those age 65 or over.

Road

	OR 18 is an east-west route connecting with US 101 in Otis Junction to the west, and OR 219 near Newberg. The highway was expanded and named as the Newberg-Dundee Bypass.
	OR 99W (formerly US 99W) is a major north-south route which follows an east-west alignment through Newberg. It connects with Portland to the northeast, Dundee and McMinnville to the southwest, and the western Willamette Valley to the south. In combination with OR 18, this is the main route for traffic between Portland and the central Oregon Coast.
	OR 219 is a north-south route connecting with St. Paul and Woodburn to the south, and Scholls and Hillsboro to the north.
	OR 240 is an east-west route connecting with OR 47 in the town of Yamhill.

Air

• Chehalem Airpark
• Sportsman Airpark

Rail

Converted Russell traction engine of the Pacific Brick Face Co. in 1907

Newberg is served by the Portland & Western Railroad which offers freight service as needed. The railroad was originally part of the Southern Pacific Railroad and was built in the 1870s. Newberg has not had regular passenger railroad service since the 1930s; however there have been several studies to consider bringing commuter rail service to the Portland metropolitan area.