Newberg weather in September

In September, Newberg sees average daytime highs of 76°F and overnight lows near 53°F, with 1.4 in of rain across 5.2 wet days and about 12.3 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 80°F in the first days to 72°F by the end. The sky is clear or mostly clear about 50% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Newberg's 3rd-clearest and 10th-windiest month. For the whole year in context, see Newberg's year-round climate.

Daytime high
76°
3rd warmest
Overnight low
53°
10th coldest
Rainfall
1.4 in
5.2 wet days
Daylight
12 h 18 min
5:57 AM – 6:16 PM
Cloud cover
41%
3rd clearest
Wind
5 mph
10th windiest
Solar energy
4.55 kWh/m²
Travel score
7.8
out of 10

Newberg is city in Yamhill County, Oregon, United States.

Density
1,515/km²
people per km²
Founded
1889

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 80°F in the first days to 72°F by the end.

A typical September day in Newberg reaches about 76°F in the afternoon and slips back to 53°F overnight — a 23°F spread between the day's warmth and the night's chill. On most days the high lands between 66°F and 88°F. Set against its neighbours, September runs about 7°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18056
28055
38055
47955
57955
67955
77955
87855
97855
107854
117854
127754
137754
147754
157653
167653
177653
187553
197553
207552
217452
227452
237452
247351
257351
267351
277251
287251
297150
307150

How September really feels in Newberg

Once humidity and wind are folded in, September averages 0 days that feel above 90°F and 0 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Newberg weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan47° / 37°6.516.41.18.91.3
Feb51° / 38°4.913.91.210.12.1
Mar55° / 40°5.416.50.411.63.0
Apr60° / 43°4.014.9013.24.2
May67° / 48°2.410014.66.1
Jun73° / 52°1.36.1015.47.3
Jul82° / 57°0.31.8015.17.6
Aug83° / 57°0.42.1013.97.5
Sep76° / 53°1.45.2012.37.8
Oct64° / 46°3.810.8010.75.5
Nov52° / 40°6.516.60.29.32.4
Dec46° / 37°7.6171.58.61.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 50% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 35%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
17228
27129
37129
47030
57030
66931
76832
86733
96634
106535
116535
126436
136337
146238
156238
166337
176238
186238
196238
206238
216337
226337
236337
246337
256337
266337
276337
286337
296238
306139

Chance of precipitation in September

Any precipitation

Newberg gets around 1.4 in of rain over 5.2 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 24% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%151015202530
Rain chance (%)
110
211
311
411
512
612
713
814
915
1016
1117
1218
1318
1419
1519
1619
1720
1820
1920
2021
2121
2221
2321
2421
2521
2622
2722
2823
2923
3024

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 85% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
183170
283170
383170
483170
583170
684160
784160
884160
984160
1084160
1183161
1283161
1383161
1484151
1584151
1684151
1784151
1885141
1985141
2086131
2186131
2287121
2387121
2488111
2589101
2689101
279091
289091
299181
309181

Wind in September

Winds average 5 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:38 AM to 6:15 AM, and sunset from 6:45 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:386:45
213.15:396:43
313.05:416:41
413.05:426:39
512.95:436:37
612.95:446:35
712.85:466:33
812.75:476:31
912.75:486:30
1012.65:496:28
1112.65:516:26
1212.55:526:24
1312.55:536:22
1412.45:546:20
1512.45:566:18
1612.35:576:16
1712.35:586:14
1812.25:596:12
1912.16:016:10
2012.16:026:08
2112.06:036:06
2212.06:046:04
2311.96:066:02
2411.96:076:00
2511.86:085:58
2611.86:095:56
2711.76:115:54
2811.76:125:52
2911.66:135:50
3011.66:155:48

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.55 kWh/m².

For context, solar energy here swings from a low near 1.06 kWh/m² to a high of 6.92 kWh/m² in July across the year — September's 4.55 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.2Bright
45.2Bright
55.1Bright
65.0Bright
75.0Bright
85.0Bright
94.9Bright
104.8Bright
114.8Bright
124.7Bright
134.7Bright
144.6Bright
154.5Bright
164.5Bright
174.4Bright
184.4Bright
194.3Bright
204.3Bright
214.2Bright
224.1Bright
234.1Bright
244.0Bright
254.0Moderate
263.9Moderate
273.9Moderate
283.8Moderate
293.7Moderate
303.6Moderate
Planning a trip in September

Hazard calendar for Newberg

In seasonPeak

None of Newberg's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Newberg's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Newberg?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.8
Sightseeing
1st-best month of the year
6.6
Beach & pool
3rd-best month of the year

September is one of the better times to visit Newberg for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Newberg in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, Newberg sees daytime highs around 76°F and nights near 53°F. Worth packing: light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in Newberg in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Newberg peaks around July 17 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highVery highHighModerateLowJul 17UV 8Dec 17UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5Moderate
May8Very high
Jun7High
Jul8Very high
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in Newberg in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Newberg is worst in September — around 34 µg/m³ PM2.5 (moderate), about 5.1× the cleanest month (January, 7 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodSep 1531 µg/m³Jan 167 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar11Good
Apr11Good
May9Good
Jun8Good
Jul7Good
Aug14Moderate
Sep34Moderate
Oct11Good
Nov10Good
Dec8Good
Location & terrain

Where is Newberg?

Newberg sits at 45.3°N, 123.0°W, 177 ft above sea level, in United States. The nearest listed city is Sherwood, 7.5 mi away.

Topography around Newberg

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Newberg.

Within 2 miles, the terrain around Newberg has only modest variations in elevation — a maximum elevation change of 443 ft around an average of 180 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,647 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,161 ft.

The land around Newberg is covered by trees (46%), grassland (21%) and artificial surfaces (20%) within 2 miles, trees (48%), grassland (24%) and cropland (23%) within 10 miles, and trees (73%) within 50 miles.

2 miles
443 ft
10 miles
1,647 ft
50 miles
5,161 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Sherwood 7.5 mi · Wilsonville 9.9 mi · Tualatin 12 mi · Woodburn 12 mi · McMinnville 12 mi · Tigard 13 mi · Canby 14 mi · Aloha 14 mi

United States travel facts

Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 100% of US
price level, 2025
GDP per capita
$90,027
2025
Happiness
6.8 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
5.8
per 100k, 2023
Road deaths
12.7
per 100k/yr, 2019
Income group
High
World Bank
Religion
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Newberg (45.3001°, -122.9732°, elevation 177 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).