Birkenfeld, Oregon

Birkenfeld has a warm-summer Mediterranean climate (Köppen Csb) with cool and cloudy winters, and warm, dry summers.[7] 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 in northernmost point in mid summer.[8]

According to the Köppen climate classification, Birkenfeld falls within the dry-summer temperate zone (Csb).[8][9] with a USDA Plant Hardiness Zones between 8b and 9a.[10] Other climate systems, such as the Trewartha climate classification, places it within the oceanic zone (Do), like much of the Pacific Northwest and Western Europe.[11]

Winters are cool, cloudy, and rainy. The coldest month is December with an average daily high of 44.0 °F (6.7 °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).

Annual snowfall in Birkenfeld falls during the December-to-March time frame.

Summers in Birkenfeld 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 5.4 inches (137 mm) of total rainfall – of the 54.7 in (1,389 mm) of the precipitation that falls throughout the year. The warmest months are July and August, with an average high temperature of 78.0 °F (25.6 °C). Because of its location 46 miles (74 km) to the coast, as well as the protective nature of the Oregon Coast Range to its west, Birkenfeld summers are less susceptible to the moderating influence of the nearby Pacific Ocean. 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 aare 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.