Shafter weather in September

In September, Shafter sees average daytime highs of 90°F and overnight lows near 66°F, with 0.0 in of rain across 0.4 wet days and about 12.2 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 94°F in the first days to 86°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 Shafter's 2nd-clearest and 8th-windiest month. For the whole year in context, see Shafter's year-round climate.

Daytime high
90°
4th warmest
Overnight low
66°
10th coldest
Rainfall
0.0 in
0.4 wet days
Daylight
12 h 12 min
5:45 AM – 5:58 PM
Cloud cover
12%
2nd clearest
Wind
3 mph
8th windiest
Solar energy
6.26 kWh/m²
Travel score
5.3
out of 10

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

Density
253/km²
people per km²
Founded
1938

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 94°F in the first days to 86°F by the end.

A typical September day in Shafter reaches about 90°F in the afternoon and slips back to 66°F overnight — a 24°F spread between the day's warmth and the night's chill. On most days the high lands between 81°F and 98°F. Set against its neighbours, September runs about 6°F cooler than August and about 11°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
19469
29469
39469
49369
59369
69369
79268
89268
99268
109267
119167
129167
139167
149066
159066
169066
179066
188965
198965
208965
218965
228865
238864
248864
258764
268764
278764
288663
298663
308562

How September really feels in Shafter

Once humidity and wind are folded in, September averages 17 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
17
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Shafter weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan60° / 43°1.86.69.95.4
Feb64° / 46°1.87.110.76.2
Mar69° / 49°1.75.911.77.2
Apr75° / 53°0.93.812.98.2
May83° / 60°0.4213.87.4
Jun91° / 66°0.10.514.44.8
Jul97° / 72°0.00.314.22.6
Aug96° / 71°0.00.213.32.9
Sep90° / 66°0.00.412.25.3
Oct79° / 58°0.4211.18.4
Nov67° / 48°0.83.710.17.5
Dec60° / 42°1.55.79.65.4

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 5% of September, with mostly cloudy or overcast conditions the remaining 6%. 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
10955
11955
12955
13955
14955
15955
16946
17946
18946
19946
20946
21937
22937
23937
24937
25937
26937
27937
28937
29937
30937

Chance of precipitation in September

Any precipitation

Shafter gets around 0.0 in of rain over 0.4 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 1% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
41
51
61
71
81
91
101
111
121
131
141
151
161
171
181
191
201
211
222
232
242
252
262
273
283
293
303

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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1682462
2682462
3692452
4702352
5702352
6712342
7712342
8712342
9742231
10742231
11742231
12742231
13752221
14762220
15772120
16772120
17772120
18772120
19782020
20782020
21782020
22791920
23791920
24791920
25801820
26801820
27801820
28811720
29811720
30821620

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 5:33 AM to 5:56 AM, and sunset from 6:20 PM to 5:37 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.85:336:20
212.75:346:19
312.75:356:17
412.75:366:16
512.65:366:15
612.65:376:13
712.65:386:12
812.55:396:10
912.55:396:09
1012.45:406:07
1112.45:416:06
1212.45:426:04
1312.35:426:03
1412.35:436:01
1512.35:446:00
1612.25:455:58
1712.25:465:57
1812.15:465:55
1912.15:475:53
2012.15:485:52
2112.05:495:50
2212.05:495:49
2312.05:505:47
2411.95:515:46
2511.95:525:44
2611.85:535:43
2711.85:535:41
2811.85:545:40
2911.75:555:38
3011.75:565:37

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.26 kWh/m².

For context, solar energy here swings from a low near 2.62 kWh/m² to a high of 8.3 kWh/m² in June across the year — September's 6.26 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.9Intense
26.8Intense
36.8Intense
46.8Intense
56.7Intense
66.7Intense
76.6Intense
86.6Intense
96.5Intense
106.5Intense
116.5Intense
126.4Intense
136.4Intense
146.3Intense
156.3Intense
166.3Intense
176.2Intense
186.2Intense
196.1Intense
206.1Intense
216.0Intense
226.0Bright
235.9Bright
245.9Bright
255.8Bright
265.8Bright
275.7Bright
285.7Bright
295.6Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Shafter?

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

5.3
Sightseeing
9th-best month of the year
8.5
Beach & pool
2nd-best month of the year

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

What to pack for Shafter in September

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

In September, Shafter sees daytime highs around 90°F and nights near 66°F. Pack light clothes and sun protection.

light clothessun protection

UV index in Shafter 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 Shafter peaks around June 20 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJun 20UV 10Dec 16UV 2
UV index (midday)Level
Jan3Moderate
Feb4Moderate
Mar5Moderate
Apr7High
May8Very high
Jun11Extreme
Jul10Very high
Aug10Very high
Sep7Very high
Oct5High
Nov3Moderate
Dec2Moderate

Air quality in Shafter 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 Shafter is worst in December — around 44 µg/m³ PM2.5 (poor), about 6.1× the cleanest month (June, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodDec 1740 µg/m³Jun 107 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar11Good
Apr9Good
May8Good
Jun7Good
Jul10Good
Aug14Moderate
Sep11Good
Oct11Good
Nov9Good
Dec44Poor
Location & terrain

Where is Shafter?

Shafter sits at 35.5°N, 119.3°W, 348 ft above sea level, in United States. The nearest listed city is Wasco, 7.5 mi away.

Topography around Shafter

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

Within 2 miles, the terrain around Shafter has only modest variations in elevation — a maximum elevation change of 69 ft around an average of 348 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 427 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,635 ft.

The land around Shafter is covered by trees (36%), cropland (21%) and artificial surfaces (21%) within 2 miles, trees (35%) and cropland (33%) within 10 miles, and grassland (55%) within 50 miles.

2 miles
69 ft
10 miles
427 ft
50 miles
8,635 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Wasco 7.5 mi · Oildale 16 mi · Bakersfield 17 mi · Delano 19 mi · Lamont 26 mi · Arvin 32 mi · Porterville 42 mi · Corcoran 44 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 Shafter (35.5005°, -119.2718°, elevation 348 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).