Montclair weather in October

In October, Montclair sees average daytime highs of 68°F and overnight lows near 52°F, with 3.4 in of rain across 7.8 wet days and about 11 hours of daylight. It is the 6th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 73°F in the first days to 63°F by the end. The sky is clear or mostly clear about 42% 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 24 min by month's end. Set against the rest of the year, October is Montclair's 1st-clearest and 7th-windiest month. For the whole year in context, see Montclair's year-round climate.

Daytime high
68°
6th warmest
Overnight low
52°
7th coldest
Rainfall
3.4 in
7.8 wet days
Daylight
11 hours
6:25 AM – 5:24 PM
Cloud cover
51%
1st clearest
Wind
6 mph
7th windiest
Solar energy
3.38 kWh/m²
Travel score
6.7
out of 10

Montclair is census designated place in Prince William County, Virginia, United States.

Density
1,224/km²
people per km²

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 73°F in the first days to 63°F by the end.

A typical October day in Montclair reaches about 68°F in the afternoon and slips back to 52°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 57°F and 79°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)
17458
27357
37357
47356
57256
67256
77155
87155
97154
107054
117054
127053
136953
146952
156852
166851
176851
186751
196750
206650
216649
226649
236549
246548
256548
266448
276447
286447
296347
306346
316246

How October really feels in Montclair

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.

Montclair 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
Jan44° / 30°3.18.52.79.60.9
Feb47° / 31°2.88.22.310.51.6
Mar56° / 39°3.910.21.611.73.8
Apr67° / 49°3.39.40136.2
May75° / 58°3.510.9014.16.6
Jun84° / 67°3.511.2014.65.5
Jul88° / 72°3.711.7014.44.3
Aug85° / 70°3.510.2013.55.1
Sep79° / 63°4.29.5012.36.7
Oct68° / 52°3.47.80116.7
Nov57° / 41°2.97.30.19.94.4
Dec48° / 34°3.48.81.49.41.9

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25545
35545
45644
55644
65644
75644
85644
95644
105644
115644
125644
135644
145644
155644
165644
175743
185743
195743
205743
215743
225743
235743
245644
255545
265545
275545
285545
295545
305545
315347

Chance of precipitation in October

Any precipitation

Montclair gets around 3.4 in of rain over 7.8 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 26% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
326
426
526
625
725
825
925
1025
1126
1226
1326
1426
1526
1626
1726
1826
1926
2026
2126
2226
2327
2427
2526
2626
2726
2826
2926
3026
3126

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 70% of days. Sticky, muggy-or-worse air turns up on roughly 6% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1471818152
2491817142
3511816132
4521816122
5551815102
656181493
758181383
860181372
961181272
1062181262
1165171152
1266171142
1368161042
1469161032
157115932
167315921
177514821
187514821
197613821
207913710
218012710
228012710
238112610
248211610
258311510
268311510
278411410
288411410
298411410
308511310
318511310

Wind in October

Winds average 6 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
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
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 36 min at the start of October to 10 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 72 minutes over October. Sunrise moves from 6:10 AM to 6:41 AM, and sunset from 5:46 PM to 5:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:105:46
211.66:115:45
311.56:125:43
411.56:135:42
511.46:145:40
611.46:155:39
711.36:165:37
811.36:175:35
911.36:185:34
1011.26:195:32
1111.26:205:31
1211.16:215:29
1311.16:225:28
1411.16:235:27
1511.06:245:25
1611.06:255:24
1710.96:265:22
1810.96:275:21
1910.96:285:20
2010.86:295:18
2110.86:305:17
2210.76:315:16
2310.76:325:14
2410.76:345:13
2510.66:355:12
2610.66:365:10
2710.56:375:09
2810.56:385:08
2910.56:395:07
3010.46:405:06
3110.46:415:05

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.38 kWh/m².

For context, solar energy here swings from a low near 2.01 kWh/m² to a high of 6.15 kWh/m² in June across the year — October's 3.38 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.8Moderate
33.8Moderate
43.7Moderate
53.7Moderate
63.7Moderate
73.6Moderate
83.6Moderate
93.6Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.4Moderate
153.4Moderate
163.4Moderate
173.4Moderate
183.3Moderate
193.3Moderate
203.3Moderate
213.2Moderate
223.2Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.0Moderate
273.0Moderate
283.0Moderate
293.0Moderate
302.9Moderate
312.9Moderate
Planning a trip in October

Hazard calendar for Montclair

In seasonPeak

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

Montclair 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 Montclair?

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

6.7
Sightseeing
1st-best month of the year
3.5
Beach & pool
6th-best month of the year

October is a reasonable time to visit Montclair for sightseeing.

What to pack for Montclair in October

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

In October, Montclair sees daytime highs around 68°F and nights near 52°F. Little to plan around — just the basics. About 8 days see rain.

UV index in Montclair in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Montclair peaks around July 11 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJul 11UV 9Dec 19UV 2
UV index (midday)Level
Jan2Moderate
Feb3Moderate
Mar5High
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Montclair 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 Montclair is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (November, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1416 µg/m³Nov 187 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar12Good
Apr13Moderate
May14Moderate
Jun15Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov7Good
Dec8Good
Location & terrain

Where is Montclair?

Montclair sits at 38.6°N, 77.3°W, 125 ft above sea level, in United States. The nearest listed city is Dale City, 2.5 mi away.

Topography around Montclair

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

Within 2 miles, the terrain around Montclair has only modest variations in elevation — a maximum elevation change of 302 ft around an average of 230 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 577 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,514 ft.

The land around Montclair is covered by trees (78%) within 2 miles, trees (74%) within 10 miles, and trees (69%) within 50 miles.

2 miles
302 ft
10 miles
577 ft
50 miles
3,514 ft
treesgrasslandcroplandartificial surfaceswaterwetland
October weather nearby: Dale City 2.5 mi · Cherry Hill 5.0 mi · Lake Ridge 5.6 mi · Lorton 8.7 mi · Buckhall 9.9 mi · Manassas 12 mi · West Springfield 13 mi · Burke 13 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 Montclair (38.611°, -77.3397°, elevation 125 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). 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).