Auburn weather in September

In September, Auburn sees average daytime highs of 69°F and overnight lows near 54°F, with 3.4 in of rain across 8.6 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 73°F in the first days to 65°F by the end. The sky is clear or mostly clear about 37% 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 Auburn's 1st-clearest and 9th-windiest month. For the whole year in context, see Auburn's year-round climate.

Daytime high
69°
4th warmest
Overnight low
54°
9th coldest
Rainfall
3.4 in
8.6 wet days
Daylight
12 h 18 min
5:26 AM – 5:44 PM
Cloud cover
54%
1st clearest
Wind
6 mph
9th windiest
Solar energy
4.16 kWh/m²
Travel score
6.7
out of 10

Auburn is city in Maine, USA.

Density
134/km²
people per km²
Founded
1842

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 73°F in the first days to 65°F by the end.

A typical September day in Auburn reaches about 69°F in the afternoon and slips back to 54°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 61°F and 78°F. Set against its neighbours, September runs about 8°F cooler than August and about 12°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17458
27458
37358
47357
57357
67357
77256
87256
97256
107155
117155
127155
137055
147054
156954
166953
176953
186853
196852
206852
216752
226751
236751
246651
256650
266550
276550
286549
296449
306449

How September really feels in Auburn

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.

Auburn weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan29° / 14°3.28.96.99.10.0
Feb32° / 16°3.08.66.710.20.0
Mar39° / 25°3.810.3611.60.2
Apr52° / 36°3.810.52.213.22.6
May62° / 46°3.110.50.114.55.2
Jun72° / 56°3.710.7015.26.4
Jul78° / 62°3.110.10156.7
Aug77° / 61°3.19013.87.1
Sep69° / 54°3.48.6012.36.7
Oct57° / 43°4.59.70.310.84.2
Nov46° / 33°3.69.529.41.2
Dec35° / 22°4.010.66.38.80.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in September, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 17% of September, with mostly cloudy or overcast conditions the remaining 46%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15842
25743
35743
45644
55644
65545
75545
85545
95545
105545
115446
125446
135446
145545
155446
165545
175545
185545
195545
205446
215446
225347
235347
245347
255347
265248
275248
285248
295248
305149

Chance of precipitation in September

Any precipitation

Auburn gets around 3.4 in of rain over 8.6 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 29% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
126
226
327
427
527
628
728
829
929
1029
1130
1230
1330
1430
1530
1630
1730
1829
1929
2029
2129
2229
2329
2429
2529
2629
2730
2830
2930
3030

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 56% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
138272213
239272212
340272112
441272111
542272110
64327219
74427209
84527208
94626208
104726207
114925197
125025196
135224186
145324185
155424175
165623174
175723164
185823154
196022153
206122143
216321133
226421123
236520123
246819112
256919102
26711892
27721882
28751771
29761671
30781561

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 5:09 AM to 5:43 AM, and sunset from 6:13 PM to 5:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:096:13
213.05:106:11
313.05:116:09
412.95:126:07
512.95:136:05
612.85:146:03
712.85:166:01
812.75:176:00
912.75:185:58
1012.65:195:56
1112.65:205:54
1212.55:225:52
1312.55:235:50
1412.45:245:48
1512.45:255:46
1612.35:265:44
1712.25:275:42
1812.25:295:40
1912.15:305:38
2012.15:315:36
2112.05:325:35
2212.05:335:33
2311.95:355:31
2411.95:365:29
2511.85:375:27
2611.85:385:25
2711.75:395:23
2811.75:415:21
2911.65:425:19
3011.65:435:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.16 kWh/m².

For context, solar energy here swings from a low near 1.48 kWh/m² to a high of 5.94 kWh/m² in July across the year — September's 4.16 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.3Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Hazard calendar for Auburn

In seasonPeak

In September, Auburn sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Auburn sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Auburn?

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

6.7
Sightseeing
2nd-best month of the year
3.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Auburn for sightseeing.

What to pack for Auburn in September

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

In September, Auburn sees daytime highs around 69°F and nights near 54°F. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Auburn in September

The nearest coast averages about 60°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 33 mi away) is warmest in August at about 63°F and coldest in March near 38°F.

The water stays below 68°F all year — cool enough that most swimmers want a wetsuit.

40°50°60°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan42Bracing
Feb39Bracing
Mar38Bracing
Apr42Bracing
May48Bracing
Jun55Bracing
Jul62Cool
Aug63Cool
Sep60Cool
Oct54Bracing
Nov49Bracing
Dec45Bracing

UV index in Auburn in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Auburn peaks around July 12 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 21 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateModerateLowJul 12UV 7Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul7Very high
Aug4Moderate
Sep6High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Auburn?

Auburn sits at 44.1°N, 70.2°W, 190 ft above sea level, in United States. The nearest listed city is Lewiston, 0.6 mi away.

Topography around Auburn

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

Within 2 miles, the terrain around Auburn has only modest variations in elevation — a maximum elevation change of 374 ft around an average of 269 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 840 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 4,783 ft.

The land around Auburn is covered by trees (59%) and artificial surfaces (25%) within 2 miles, trees (77%) within 10 miles, and trees (75%) within 50 miles.

2 miles
374 ft
10 miles
840 ft
50 miles
4,783 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Lewiston 0.6 mi · Brunswick 18 mi · Augusta 27 mi · Westbrook 30 mi · Portland 30 mi · South Portland 32 mi · South Portland Gardens 32 mi · West Scarborough 37 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 Auburn (44.0979°, -70.2312°, elevation 190 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).