Lennox weather in September

In September, Lennox sees average daytime highs of 85°F and overnight lows near 63°F, with 0.1 in of rain across 0.5 wet days and about 12.2 hours of daylight. It is the 2nd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 87°F in the first days to 84°F by the end. The sky is clear or mostly clear about 86% of the time in September, and the air most often feels comfortable.

Daylight stretches from about 12 h 42 min at the start of September to 11 h 42 min by month's end. Set against the rest of the year, September is Lennox's 2nd-clearest and 10th-windiest month. For the whole year in context, see Lennox's year-round climate.

Daytime high
85°
2nd warmest
Overnight low
63°
10th coldest
Rainfall
0.1 in
0.5 wet days
Daylight
12 h 12 min
5:41 AM – 5:54 PM
Cloud cover
16%
2nd clearest
Wind
4 mph
10th windiest
Solar energy
6.17 kWh/m²
Travel score
7.0
out of 10

Lennox is census designated place in Los Angeles County, California, United States.

Density
8,035/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 87°F in the first days to 84°F by the end.

A typical September day in Lennox reaches about 85°F in the afternoon and slips back to 63°F overnight — a 22°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 95°F. Set against its neighbours, September runs about 2°F cooler than August and about 6°F warmer than October.

60°80°100°151015202530
Avg high (°F)Avg low (°F)
18865
28865
38765
48765
58765
68765
78765
88665
98664
108664
118664
128564
138564
148564
158563
168563
178563
188563
198563
208463
218462
228462
238462
248462
258462
268462
278462
288462
298361
308361

Lennox weather by month

How September compares with the rest of the year at a glance. September is the 2nd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan66° / 46°3.25.5106.9
Feb66° / 48°3.45.910.76.8
Mar69° / 50°2.25.211.77.3
Apr73° / 53°0.82.512.88.3
May76° / 57°0.31.513.78.9
Jun80° / 60°0.10.314.28.7
Jul85° / 64°0.10.4147.0
Aug87° / 65°0.00.113.36.4
Sep85° / 63°0.10.512.27.0
Oct80° / 58°0.6211.18.4
Nov72° / 51°0.82.210.28.4
Dec65° / 46°2.04.69.87.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 86% 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 8%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1955
2955
3955
4946
5946
6937
7937
8937
9937
10937
11937
12937
13937
14937
15937
16928
17928
18928
19928
20928
21928
22919
239010
249010
259010
269010
279010
289010
298911
308911

Chance of precipitation in September

Any precipitation

Lennox gets around 0.1 in of rain over 0.5 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 2% and peaks near 3% on the wettest days.

0%10%20%30%151015202530
Rain chance (%)
11
21
31
42
52
62
72
82
92
102
112
122
132
142
152
162
172
182
192
202
212
222
232
242
252
263
273
283
293
303

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the comfortable band about 52% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
11348354
21348344
31449334
41449324
51550314
61651294
71751284
81851274
91852264
101953253
112053243
122153233
132155222
142255212
152354212
162454202
172455201
182554201
192654191
202654191
212753191
222852191
232952181
243052171
253250171
263350161
273550150
283749140
293948130
304147120

Wind in September

Winds average 4 mph in September.

Across September, daily wind ranges from about 4 mph on the calmest days to 4 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 42 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 60 minutes over September. Sunrise moves from 5:31 AM to 5:52 AM, and sunset from 6:15 PM to 5:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.75:316:15
212.75:326:14
312.75:326:13
412.65:336:11
512.65:346:10
612.65:346:08
712.55:356:07
812.55:366:06
912.55:376:04
1012.45:376:03
1112.45:386:01
1212.45:396:00
1312.35:395:58
1412.35:405:57
1512.25:415:55
1612.25:415:54
1712.25:425:53
1812.15:435:51
1912.15:445:50
2012.15:445:48
2112.05:455:47
2212.05:465:45
2312.05:475:44
2411.95:475:42
2511.95:485:41
2611.85:495:39
2711.85:495:38
2811.85:505:37
2911.75:515:35
3011.75:525:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 6.17 kWh/m².

For context, solar energy here swings from a low near 2.96 kWh/m² to a high of 8 kWh/m² in June across the year — September's 6.17 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.8Intense
26.8Intense
36.7Intense
46.7Intense
56.6Intense
66.6Intense
76.5Intense
86.5Intense
96.5Intense
106.4Intense
116.4Intense
126.3Intense
136.3Intense
146.3Intense
156.2Intense
166.2Intense
176.1Intense
186.1Intense
196.0Intense
206.0Bright
215.9Bright
225.9Bright
235.8Bright
245.8Bright
255.8Bright
265.7Bright
275.7Bright
285.6Bright
295.6Bright
305.5Bright
Planning a trip in September

Is September a good time to visit Lennox?

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

7.0
Sightseeing
8th-best month of the year
9.2
Beach & pool
2nd-best month of the year

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

What to pack for Lennox in September

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

In September, Lennox sees daytime highs around 85°F and nights near 63°F. Pack light clothes and sun protection.

light clothessun protection

Sea temperature near Lennox in September

The nearest coast averages about 68°F in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 68°F and coldest in February near 59°F.

It's comfortable for a long swim from Aug 4 to Sep 13 — about 1.3 months when the water holds above 68°F.

60°65°70°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°F)Comfort
Jan59Bracing
Feb59Bracing
Mar59Bracing
Apr59Cool
May62Cool
Jun65Cool
Jul67Cool
Aug68Refreshing
Sep68Refreshing
Oct66Cool
Nov63Cool
Dec60Cool

UV index in Lennox 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 Lennox peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highExtremeVery highHighModerateJun 23UV 11Dec 16UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar5Moderate
Apr7Very high
May7Very high
Jun11Extreme
Jul11Extreme
Aug10Very high
Sep8Very high
Oct5High
Nov3Moderate
Dec3Moderate

Air quality in Lennox 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 Lennox is worst in November — around 37 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (May, 14 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateModerateNov 1736 µg/m³May 2114 µg/m³
PM2.5 (µg/m³)Level
Jan26Moderate
Feb24Moderate
Mar22Moderate
Apr20Moderate
May14Moderate
Jun16Moderate
Jul24Moderate
Aug20Moderate
Sep32Moderate
Oct24Moderate
Nov37Poor
Dec27Moderate
Location & terrain

Where is Lennox?

Lennox sits at 33.9°N, 118.4°W, 72 ft above sea level, in United States. The nearest listed city is Hawthorne, 1.2 mi away.

Topography around Lennox

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

Within 2 miles, the terrain around Lennox has only modest variations in elevation — a maximum elevation change of 197 ft around an average of 102 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 702 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 10,013 ft.

The land around Lennox is covered by artificial surfaces (92%) within 2 miles, artificial surfaces (73%) and water (20%) within 10 miles, and water (40%) and artificial surfaces (22%) within 50 miles.

2 miles
197 ft
10 miles
702 ft
50 miles
10,013 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Hawthorne 1.2 mi · Inglewood 1.9 mi · Westmont 3.1 mi · Lawndale 3.7 mi · El Segundo 3.7 mi · Gardena 4.3 mi · Manhattan Beach 5.0 mi · Vermont Square 5.6 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 Lennox (33.9381°, -118.3526°, elevation 72 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. 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. 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).