Amherst Center weather in September

In September, Amherst Center sees average daytime highs of 72°F and overnight lows near 53°F, with 3.8 in of rain across 8.3 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 77°F in the first days to 67°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 hours at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Amherst Center's 1st-clearest and 9th-windiest month. For the whole year in context, see Amherst Center's year-round climate.

Daytime high
72°
4th warmest
Overnight low
53°
9th coldest
Rainfall
3.8 in
8.3 wet days
Daylight
12 h 18 min
5:36 AM – 5:53 PM
Cloud cover
56%
1st clearest
Wind
6 mph
9th windiest
Solar energy
4.15 kWh/m²
Travel score
6.9
out of 10

Amherst Center is census-designated place in Hampshire County, Massachusetts, United States.

Density
1,484/km²
people per km²

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 77°F in the first days to 67°F by the end.

A typical September day in Amherst Center reaches about 72°F in the afternoon and slips back to 53°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 82°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)
17758
27758
37758
47657
57657
67657
77556
87556
97556
107455
117455
127455
137354
147354
157354
167253
177253
187153
197152
207152
217051
227051
236951
246950
256950
266850
276849
286749
296749
306648

How September really feels in Amherst Center

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.

Amherst Center weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan33° / 18°3.49.66.69.30.0
Feb36° / 19°3.08.96.310.30.0
Mar44° / 27°4.010.65.411.60.8
Apr57° / 38°3.711.11.513.13.8
May67° / 48°3.3110.114.46.0
Jun77° / 57°3.510.80156.6
Jul82° / 63°3.49.9014.86.4
Aug80° / 61°3.39.2013.76.7
Sep72° / 53°3.88.3012.36.9
Oct60° / 43°4.39.50.310.84.9
Nov48° / 33°3.59.71.79.61.8
Dec38° / 24°4.210.55.490.0

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 15% of September, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15347
25347
35248
45248
55149
65149
75149
85149
95248
105248
115248
125248
135248
145347
155347
165248
175347
185347
195347
205248
215248
225248
235248
245149
255149
265149
275149
285149
295149
305149

Chance of precipitation in September

Any precipitation

Amherst Center gets around 3.8 in of rain over 8.3 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
124
225
325
425
526
626
727
827
927
1028
1128
1228
1328
1428
1528
1628
1728
1828
1928
2028
2128
2228
2328
2429
2529
2629
2729
2829
2929
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 57% of days. Sticky, muggy-or-worse air turns up on roughly 9% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1402817142
2412717132
3422717132
4432617131
5442616131
6452616121
7462516121
8472516121
9482516111
10492415111
11512315110
12522215110
13542115100
14542115100
1556201590
1657191590
1760181480
1860181480
1962171470
2063161470
2165161360
2266151360
2367151350
2469141250
2571141140
2671141140
2773131040
2874131030
297513930
307712830

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 5 mph on the calmest days to 6 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
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 hours 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 84 minutes over September. Sunrise moves from 5:20 AM to 5:52 AM, and sunset from 6:20 PM to 5:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.05:206:20
213.05:216:18
312.95:226:16
412.95:236:15
512.85:246:13
612.85:256:11
712.75:266:09
812.75:276:07
912.65:286:06
1012.65:296:04
1112.55:306:02
1212.55:326:00
1312.45:335:58
1412.45:345:57
1512.35:355:55
1612.35:365:53
1712.25:375:51
1812.25:385:49
1912.15:395:47
2012.15:405:45
2112.05:415:44
2212.05:435:42
2311.95:445:40
2411.95:455:38
2511.85:465:36
2611.85:475:34
2711.75:485:33
2811.75:495:31
2911.65:505:29
3011.65:525:27

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.15 kWh/m².

For context, solar energy here swings from a low near 1.59 kWh/m² to a high of 5.92 kWh/m² in July across the year — September's 4.15 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.8Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.5Bright
94.4Bright
104.4Bright
114.3Bright
124.3Bright
134.3Bright
144.2Bright
154.2Bright
164.2Bright
174.1Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.5Moderate
Planning a trip in September

Is September a good time to visit Amherst Center?

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

6.9
Sightseeing
1st-best month of the year
4.9
Beach & pool
4th-best month of the year

September is a reasonable time to visit Amherst Center for sightseeing.

What to pack for Amherst Center in September

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

In September, Amherst Center sees daytime highs around 72°F and nights near 53°F. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

UV index in Amherst Center 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 Amherst Center peaks around July 11 at about 7 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 23 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 7Dec 23UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar4Moderate
Apr5High
May7Very high
Jun7Very high
Jul8Very high
Aug5High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low
Location & terrain

Where is Amherst Center?

Amherst Center sits at 42.4°N, 72.5°W, 305 ft above sea level, in United States. The nearest listed city is Amherst, 0.6 mi away.

Topography around Amherst Center

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

Within 2 miles, the terrain around Amherst Center has only modest variations in elevation — a maximum elevation change of 374 ft around an average of 226 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,260 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,675 ft.

The land around Amherst Center is covered by trees (58%) and grassland (23%) within 2 miles, trees (79%) within 10 miles, and trees (91%) within 50 miles.

2 miles
374 ft
10 miles
1,260 ft
50 miles
3,675 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Amherst 0.6 mi · Northampton 6.8 mi · South Hadley 8.7 mi · Easthampton 11 mi · Holyoke 13 mi · North Chicopee 14 mi · Ludlow 15 mi · Greenfield 15 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 Amherst Center (42.3754°, -72.5192°, elevation 305 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).