Arvin weather in September

In September, Arvin sees average daytime highs of 81°F and overnight lows near 59°F, with 0.1 in of rain across 1 wet days and about 12.2 hours of daylight. It is the 3rd-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 84°F in the first days to 78°F by the end. The sky is clear or mostly clear about 89% 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 Arvin's 2nd-clearest and 10th-windiest month. For the whole year in context, see Arvin's year-round climate.

Daytime high
81°
3rd warmest
Overnight low
59°
9th coldest
Rainfall
0.1 in
1 wet days
Daylight
12 h 12 min
5:43 AM – 5:56 PM
Cloud cover
13%
2nd clearest
Wind
3 mph
10th windiest
Solar energy
6.41 kWh/m²
Travel score
8.5
out of 10

Arvin is city in Kern County, California, United States.

Density
1,672/km²
people per km²
Founded
1960

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 84°F in the first days to 78°F by the end.

A typical September day in Arvin reaches about 81°F in the afternoon and slips back to 59°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 71°F and 89°F. Set against its neighbours, September runs about 5°F cooler than August and about 9°F warmer than October.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
18463
28462
38462
48462
58362
68361
78361
88361
98260
108260
118260
128260
138259
148159
158159
168158
178158
188058
198058
208057
218057
228057
237957
247956
257956
267956
277856
287855
297855
307755

Arvin weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan57° / 38°2.07.20.89.94.3
Feb58° / 40°2.18.21.210.74.6
Mar62° / 43°2.07.80.811.75.8
Apr66° / 46°1.15.20.512.97.1
May73° / 53°0.53013.88.5
Jun81° / 60°0.10.5014.38.6
Jul86° / 66°0.10.8014.16.6
Aug86° / 65°0.10.4013.36.8
Sep81° / 59°0.11012.28.5
Oct72° / 50°0.52.5011.18.7
Nov62° / 42°1.14.30.310.16.4
Dec56° / 38°2.06.70.89.74.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 89% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 6% of September, with mostly cloudy or overcast conditions the remaining 5%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1955
2955
3955
4955
5955
6955
7955
8955
9955
10964
11964
12964
13964
14964
15964
16964
17955
18955
19955
20955
21955
22946
23946
24946
25946
26946
27937
28937
29928
30928

Chance of precipitation in September

Any precipitation

Arvin gets around 0.1 in of rain over 1 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 3% and peaks near 5% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
13
23
33
43
53
63
73
83
93
103
113
123
133
143
153
163
173
183
193
203
213
223
233
244
254
264
274
285
295
305

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 77% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1642682
2652582
3662572
4672571
5692461
6692461
7692461
8712351
9712351
10732241
11742231
12762130
13762130
14782020
15791920
16801820
17801820
18811720
19811720
20821620
21821620
22831520
23831520
24831520
25831520
26831520
27841420
28851410
29851410
30861310

Wind in September

Winds average 3 mph in September.

Across September, daily wind ranges from about 3 mph on the calmest days to 3 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

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 5:32 AM to 5:54 AM, and sunset from 6:18 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:326:18
212.75:326:17
312.75:336:15
412.75:346:14
512.65:356:13
612.65:356:11
712.65:366:10
812.55:376:08
912.55:386:07
1012.45:396:05
1112.45:396:04
1212.45:406:02
1312.35:416:01
1412.35:425:59
1512.35:425:58
1612.25:435:56
1712.25:445:55
1812.15:455:53
1912.15:455:52
2012.15:465:50
2112.05:475:49
2212.05:485:47
2312.05:485:46
2411.95:495:44
2511.95:505:43
2611.85:515:41
2711.85:525:40
2811.85:525:38
2911.75:535:37
3011.75:545:35

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.41 kWh/m².

For context, solar energy here swings from a low near 2.83 kWh/m² to a high of 8.49 kWh/m² in June across the year — September's 6.41 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
17.0Intense
26.9Intense
36.9Intense
46.9Intense
56.8Intense
66.8Intense
76.8Intense
86.7Intense
96.7Intense
106.7Intense
116.6Intense
126.6Intense
136.5Intense
146.5Intense
156.5Intense
166.4Intense
176.4Intense
186.3Intense
196.3Intense
206.2Intense
216.2Intense
226.1Intense
236.1Intense
246.0Intense
256.0Bright
265.9Bright
275.9Bright
285.8Bright
295.8Bright
305.7Bright
Planning a trip in September

Is September a good time to visit Arvin?

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

8.5
Sightseeing
3rd-best month of the year
8.8
Beach & pool
3rd-best month of the year

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

What to pack for Arvin in September

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

In September, Arvin sees daytime highs around 81°F and nights near 59°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Arvin in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arvin peaks around June 20 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeExtremeVery highHighModerateJun 20UV 11Dec 15UV 3
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5High
Apr7Very high
May8Very high
Jun11Extreme
Jul10Very high
Aug11Extreme
Sep8Very high
Oct6High
Nov3Moderate
Dec3Moderate

Air quality in Arvin 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 Arvin is worst in August — around 35 µg/m³ PM2.5 (moderate), about 6.1× the cleanest month (January, 6 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateAug 1633 µg/m³Jan 236 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb7Good
Mar8Good
Apr8Good
May7Good
Jun12Good
Jul19Moderate
Aug35Moderate
Sep17Moderate
Oct12Good
Nov6Good
Dec16Moderate
Location & terrain

Where is Arvin?

Arvin sits at 35.2°N, 118.8°W, 449 ft above sea level, in United States. The nearest listed city is Lamont, 6.2 mi away.

Topography around Arvin

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

Within 2 miles, the terrain around Arvin has only modest variations in elevation — a maximum elevation change of 125 ft around an average of 440 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 6,217 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,579 ft.

The land around Arvin is covered by cropland (47%) within 2 miles, grassland (42%) and cropland (35%) within 10 miles, and grassland (53%) and trees (21%) within 50 miles.

2 miles
125 ft
10 miles
6,217 ft
50 miles
8,579 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Lamont 6.2 mi · Bakersfield 16 mi · Oildale 18 mi · Shafter 32 mi · Wasco 39 mi · Rosamond 45 mi · Delano 45 mi · Castaic 51 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 Arvin (35.2091°, -118.8284°, elevation 449 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).