Summit weather in October

In October, Summit sees average daytime highs of 64°F and overnight lows near 49°F, with 3.9 in of precipitation across 8.7 wet days and about 10.9 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 69°F in the first days to 59°F by the end. The sky is clear or mostly clear about 38% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 36 min at the start of October to 10 h 18 min by month's end. Set against the rest of the year, October is Summit's 1st-clearest and 7th-windiest month. For the whole year in context, see Summit's year-round climate.

Daytime high
64°
6th warmest
Overnight low
49°
7th coldest
Precipitation
3.9 in
8.7 wet days
Daylight
10 h 54 min
6:16 AM – 5:09 PM
Cloud cover
54%
1st clearest
Wind
7 mph
7th windiest
Solar energy
3.08 kWh/m²
Travel score
5.8
out of 10

Summit is city in Union County, New Jersey, United States.

Density
1,409/km²
people per km²
Founded
1710

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 69°F in the first days to 59°F by the end.

A typical October day in Summit reaches about 64°F in the afternoon and slips back to 49°F overnight — a 15°F spread between the day's warmth and the night's chill. On most days the high lands between 54°F and 73°F. Set against its neighbours, October runs about 11°F cooler than September and about 11°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16955
26954
36954
46854
56853
66753
76753
86752
96652
106651
116651
126551
136550
146450
156449
166449
176349
186348
196248
206247
216247
226147
236147
246046
256046
266046
275945
285945
295944
305844
315844

How October really feels in Summit

Once humidity and wind are folded in, October 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

October sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Summit weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan38° / 25°3.49.24.69.40.0
Feb40° / 26°3.18.43.910.40.1
Mar48° / 34°4.210.23.511.71.8
Apr60° / 44°3.710.80.413.14.6
May70° / 54°3.611.7014.26.2
Jun79° / 64°4.111.2014.96.4
Jul84° / 69°4.211014.65.4
Aug82° / 68°4.010.7013.66.1
Sep75° / 60°4.09.4012.36.9
Oct64° / 49°3.98.70.110.95.8
Nov52° / 39°3.18.20.59.73.0
Dec43° / 31°4.09.739.10.5

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of October, with mostly cloudy or overcast conditions the remaining 47%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25446
35446
45545
55545
65545
75545
85545
95545
105545
115545
125545
135545
145545
155446
165446
175347
185248
195248
205248
215149
225149
235050
245050
255050
264951
275050
285050
295149
305149
315149

Chance of precipitation in October

Any precipitation

Summit gets around 3.9 in of rain and snow over 8.7 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 29% and peaks near 31% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
131
231
330
430
530
630
729
829
929
1029
1129
1229
1330
1430
1530
1630
1729
1829
1929
2029
2129
2228
2328
2428
2527
2627
2726
2826
2926
3025
3125

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 80% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
159191471
261181371
363181261
464171261
566171151
668161051
769161041
87115941
97314931
107414831
117513831
127812721
137912621
148011621
158311510
168410510
178410510
18869410
19878410
20878410
21878410
22887410
23897310
24897310
25897310
26906310
27906310
28926200
29926200
30926200
31926200

Wind in October

Winds average 7 mph in October.

Across October, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247light breeze
257light breeze
267light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over October. Sunrise moves from 5:59 AM to 6:33 AM, and sunset from 5:34 PM to 4:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.65:595:34
211.56:005:32
311.56:015:30
411.46:025:29
511.46:045:27
611.36:055:25
711.36:065:24
811.36:075:22
911.26:085:20
1011.26:095:19
1111.16:105:17
1211.16:115:16
1311.06:125:14
1411.06:135:12
1510.96:145:11
1610.96:165:09
1710.96:175:08
1810.86:185:06
1910.86:195:05
2010.76:205:03
2110.76:215:02
2210.66:225:01
2310.66:244:59
2410.66:254:58
2510.56:264:57
2610.56:274:55
2710.46:284:54
2810.46:294:53
2910.36:314:51
3010.36:324:50
3110.36:334:49

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.08 kWh/m².

For context, solar energy here swings from a low near 1.75 kWh/m² to a high of 5.92 kWh/m² in June across the year — October's 3.08 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.5Moderate
33.5Moderate
43.5Moderate
53.4Moderate
63.4Moderate
73.4Moderate
83.3Moderate
93.3Moderate
103.3Moderate
113.3Moderate
123.2Moderate
133.2Moderate
143.2Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.0Moderate
193.0Moderate
203.0Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.8Moderate
252.8Moderate
262.7Moderate
272.7Moderate
282.7Moderate
292.6Moderate
302.6Moderate
312.6Moderate
Planning a trip in October

Hazard calendar for Summit

In seasonPeak

In October, Summit sits inside its atlantic hurricane season. The full year is below, with each hazard's peak months called out.

Summit sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Summit?

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

5.8
Sightseeing
5th-best month of the year
1.8
Beach & pool
6th-best month of the year

October is a reasonable time to visit Summit for sightseeing.

What to pack for Summit in October

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

In October, Summit sees daytime highs around 64°F and nights near 49°F. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Summit in October

The nearest coast averages about 63°F in October — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 27 mi away) is warmest in August at about 74°F and coldest in February near 40°F.

It's comfortable for a long swim from Jun 30 to Sep 26 — about 2.9 months when the water holds above 68°F.

40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan43Bracing
Feb40Bracing
Mar41Bracing
Apr46Bracing
May55Bracing
Jun65Cool
Jul72Refreshing
Aug74Refreshing
Sep71Refreshing
Oct63Cool
Nov55Bracing
Dec48Bracing

UV index in Summit in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Summit peaks around July 11 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 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 8Dec 22UV 1
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun8Very high
Jul8Very high
Aug6High
Sep6High
Oct3Moderate
Nov2Moderate
Dec1Low

Air quality in Summit in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Summit is worst in July — around 18 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (November, 10 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1318 µg/m³Nov 1410 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar16Moderate
Apr16Moderate
May17Moderate
Jun17Moderate
Jul18Moderate
Aug16Moderate
Sep14Moderate
Oct11Good
Nov10Good
Dec12Good
Location & terrain

Where is Summit?

Summit sits at 40.7°N, 74.4°W, 200 ft above sea level, in United States. The nearest listed city is Millburn, 3.1 mi away.

Topography around Summit

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

Within 2 miles, the terrain around Summit has only modest variations in elevation — a maximum elevation change of 453 ft around an average of 344 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 840 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,008 ft.

The land around Summit is covered by trees (80%) within 2 miles, trees (69%) and artificial surfaces (22%) within 10 miles, and trees (61%) within 50 miles.

2 miles
453 ft
10 miles
840 ft
50 miles
2,008 ft
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Millburn 3.1 mi · Westfield 3.7 mi · Madison 4.3 mi · Scotch Plains 4.3 mi · Maplewood 5.0 mi · Cranford 5.0 mi · Union 5.6 mi · South Orange 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 Summit (40.7156°, -74.3647°, elevation 200 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).