Bella Vista weather in September

In September, Bella Vista sees average daytime highs of 81°F and overnight lows near 61°F, with 4.0 in of rain across 8 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 85°F in the first days to 77°F by the end. The sky is clear or mostly clear about 49% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 48 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Bella Vista's 1st-clearest and 10th-windiest month. For the whole year in context, see Bella Vista's year-round climate.

Daytime high
81°
4th warmest
Overnight low
61°
9th coldest
Rainfall
4.0 in
8 wet days
Daylight
12 h 12 min
6:05 AM – 6:18 PM
Cloud cover
44%
1st clearest
Wind
6 mph
10th windiest
Solar energy
4.9 kWh/m²
Travel score
6.8
out of 10

Bella Vista is city in Benton County, Arkansas, United States.

Density
231/km²
people per km²
Founded
2006

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 85°F in the first days to 77°F by the end.

A typical September day in Bella Vista reaches about 81°F in the afternoon and slips back to 61°F overnight — a 20°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 90°F. Set against its neighbours, September runs about 7°F cooler than August and about 11°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18666
28566
38566
48565
58565
68465
78464
88364
98364
108363
118263
128262
138162
148162
158161
168061
178061
188060
197960
207959
217959
227858
237858
247858
257757
267757
277756
287656
297656
307655

How September really feels in Bella Vista

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.

Bella Vista weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan46° / 28°2.67.41.99.81.2
Feb50° / 32°2.67.51.610.62.4
Mar59° / 40°4.310.61.111.74.6
Apr68° / 48°5.411.20.112.96.1
May75° / 58°5.512.80.113.96.4
Jun84° / 67°4.310.9014.45.6
Jul89° / 70°3.39.6014.24.4
Aug88° / 69°3.19013.44.7
Sep81° / 61°4.08012.26.8
Oct69° / 50°4.08.6011.16.9
Nov57° / 39°3.38.20.410.14.4
Dec48° / 31°2.77.71.69.61.8

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% 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 36%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16832
26832
36733
46634
56535
66535
76337
86337
96238
106139
116139
126040
136040
146040
156040
166040
176040
186139
196139
206238
216436
226535
236634
246832
256832
266931
276931
287030
297129
307030

Chance of precipitation in September

Any precipitation

Bella Vista gets around 4.0 in of rain over 8 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 27% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202530
Rain chance (%)
127
227
327
428
528
628
728
829
929
1029
1129
1229
1330
1430
1530
1630
1730
1829
1929
2028
2127
2227
2326
2425
2524
2623
2723
2822
2922
3022

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 29% of days. Sticky, muggy-or-worse air turns up on roughly 31% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1813254013
2914253912
31015253812
41216253611
51317253510
61418253410
7161824339
8171924328
9191924317
10201924307
11211924296
12221924296
13241924285
14251923284
15271923274
16281923264
17291923263
18311922253
19331922242
20341921232
21361921222
22381920212
23411919201
24431818191
25451818181
26471817171
27491816161
28501816151
29521815141
30541815130

Wind in September

Winds average 6 mph in September.

Across September, daily wind ranges from about 6 mph on the calmest days to 6 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
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 48 min at the start of September to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 66 minutes over September. Sunrise moves from 5:52 AM to 6:16 AM, and sunset from 6:41 PM to 5:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:526:41
212.85:536:40
312.75:546:38
412.75:556:37
512.75:566:35
612.65:566:34
712.65:576:32
812.55:586:31
912.55:596:29
1012.56:006:28
1112.46:006:26
1212.46:016:25
1312.36:026:23
1412.36:036:21
1512.36:046:20
1612.26:056:18
1712.26:056:17
1812.16:066:15
1912.16:076:14
2012.16:086:12
2112.06:096:10
2212.06:096:09
2312.06:106:07
2411.96:116:06
2511.96:126:04
2611.86:136:03
2711.86:146:01
2811.86:156:00
2911.76:155:58
3011.76:165:57

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.9 kWh/m².

For context, solar energy here swings from a low near 2.21 kWh/m² to a high of 6.55 kWh/m² in July across the year — September's 4.9 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.0Bright
115.0Bright
125.0Bright
134.9Bright
144.9Bright
154.8Bright
164.8Bright
174.8Bright
184.8Bright
194.7Bright
204.7Bright
214.7Bright
224.7Bright
234.7Bright
244.7Bright
254.6Bright
264.6Bright
274.6Bright
284.6Bright
294.6Bright
304.5Bright
Planning a trip in September

Is September a good time to visit Bella Vista?

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

6.8
Sightseeing
2nd-best month of the year
7.0
Beach & pool
1st-best month of the year

September is a reasonable time to visit Bella Vista for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Bella Vista in September

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

In September, Bella Vista sees daytime highs around 81°F and nights near 61°F. Pack light clothes. Worth having: rain gear and sun protection. About 8 days see rain.

light clothesrain gearsun protection

UV index in Bella Vista in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bella Vista peaks around July 12 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 12UV 10Dec 22UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar6High
Apr8Very high
May8Very high
Jun10Very high
Jul10Very high
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec2Moderate

Air quality in Bella Vista 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 Bella Vista is worst in July — around 17 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (November, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Nov 196 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb8Good
Mar12Good
Apr10Good
May12Moderate
Jun15Moderate
Jul17Moderate
Aug14Moderate
Sep10Good
Oct6Good
Nov6Good
Dec6Good
Location & terrain

Where is Bella Vista?

Bella Vista sits at 36.5°N, 94.3°W, 1,033 ft above sea level, in United States. The nearest listed city is Bentonville, 8.1 mi away.

Topography around Bella Vista

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

Within 2 miles, the terrain around Bella Vista has only modest variations in elevation — a maximum elevation change of 358 ft around an average of 1,142 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 640 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,788 ft.

The land around Bella Vista is covered by trees (80%) within 2 miles, trees (69%) and grassland (24%) within 10 miles, and trees (54%) and grassland (37%) within 50 miles.

2 miles
358 ft
10 miles
640 ft
50 miles
1,788 ft
treesgrasslandcroplandartificial surfaceswater
September weather nearby: Bentonville 8.1 mi · Rogers 13 mi · Springdale 22 mi · Siloam Springs 25 mi · Fayetteville 30 mi · Joplin 43 mi · Tahlequah 55 mi · Republic 62 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 Bella Vista (36.4807°, -94.2713°, elevation 1,033 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).