Catonsville weather in October

In October, Catonsville sees average daytime highs of 66°F and overnight lows near 50°F, with 3.6 in of rain across 8 wet days and about 11 hours of daylight. It is the 6th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 71°F in the first days to 61°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 Catonsville's 1st-clearest and 7th-windiest month. For the whole year in context, see Catonsville's year-round climate.

Daytime high
66°
6th warmest
Overnight low
50°
7th coldest
Rainfall
3.6 in
8 wet days
Daylight
11 hours
6:23 AM – 5:20 PM
Cloud cover
51%
1st clearest
Wind
7 mph
7th windiest
Solar energy
3.3 kWh/m²
Travel score
6.4
out of 10

Catonsville is census-designated place in Baltimore County, Maryland, United States.

Density
1,143/km²
people per km²
Founded
1831

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 71°F in the first days to 61°F by the end.

A typical October day in Catonsville reaches about 66°F in the afternoon and slips back to 50°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 56°F and 77°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)
17256
27255
37155
47154
57154
67054
77053
86953
96952
106952
116852
126851
136751
146750
156750
166649
176649
186549
196548
206548
216447
226447
236447
246347
256346
266246
276246
286245
296145
306144
316044

How October really feels in Catonsville

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.

Catonsville weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan42° / 28°3.18.539.60.2
Feb44° / 29°2.98.53.210.50.9
Mar53° / 36°4.010.32.211.73.0
Apr64° / 47°3.510.30.2135.7
May73° / 56°3.811.4014.16.5
Jun82° / 65°3.711.6014.75.8
Jul86° / 70°4.212.1014.54.7
Aug84° / 69°3.710.9013.55.4
Sep78° / 61°4.69.1012.36.9
Oct66° / 50°3.680116.4
Nov55° / 39°3.07.60.29.83.8
Dec46° / 32°3.791.79.31.2

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 14% of October, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35644
45644
55842
65842
75842
85842
95842
105743
115743
125743
135743
145743
155743
165743
175644
185644
195644
205644
215644
225545
235545
245446
255446
265446
275446
285446
295347
305347
315347

Chance of precipitation in October

Any precipitation

Catonsville gets around 3.6 in of rain over 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 28% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
228
327
427
526
626
725
825
925
1025
1125
1226
1326
1426
1526
1626
1726
1826
1926
2026
2126
2227
2327
2427
2527
2626
2726
2826
2926
3026
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 75% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1551716111
2561715111
3581714101
460171391
561171381
663171271
764161262
865161162
967161052
1068161051
117115941
127115941
137414831
147414831
157614721
167713721
177713721
188112610
198112610
208211610
218311510
228410510
238410510
248510410
258510410
268510410
278610310
288710300
298710300
308810200
31899200

Wind in October

Winds average 7 mph in October.

Across October, daily wind ranges from about 7 mph on the calmest days to 7 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
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 6:08 AM to 6:40 AM, and sunset from 5:44 PM to 5:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:085:44
211.66:095:42
311.56:105:40
411.56:115:39
511.46:125:37
611.46:135:36
711.36:145:34
811.36:155:33
911.26:165:31
1011.26:175:29
1111.26:185:28
1211.16:195:26
1311.16:205:25
1411.06:215:23
1511.06:225:22
1611.06:235:20
1710.96:245:19
1810.96:265:18
1910.86:275:16
2010.86:285:15
2110.76:295:14
2210.76:305:12
2310.76:315:11
2410.66:325:10
2510.66:335:08
2610.56:345:07
2710.56:355:06
2810.56:375:05
2910.46:385:03
3010.46:395:02
3110.46:405:01

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.3 kWh/m².

For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 6.11 kWh/m² in June across the year — October's 3.3 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.8Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.6Moderate
63.6Moderate
73.6Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.4Moderate
133.4Moderate
143.4Moderate
153.3Moderate
163.3Moderate
173.3Moderate
183.2Moderate
193.2Moderate
203.2Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.0Moderate
253.0Moderate
263.0Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Hazard calendar for Catonsville

In seasonPeak

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

Catonsville 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 Catonsville?

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

6.4
Sightseeing
3rd-best month of the year
2.8
Beach & pool
6th-best month of the year

October is a reasonable time to visit Catonsville for sightseeing.

What to pack for Catonsville in October

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

In October, Catonsville sees daytime highs around 66°F and nights near 50°F. Worth packing: rain gear. About 8 days see rain.

rain gear

Sea temperature near Catonsville in October

The nearest coast averages about 65°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 22 mi away) is warmest in August at about 78°F and coldest in February near 36°F.

It's comfortable for a long swim from Jun 16 to Oct 5 — about 3.7 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmtropicalcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar40Bracing
Apr47Bracing
May58Bracing
Jun68Refreshing
Jul76Warm
Aug78Warm
Sep74Refreshing
Oct65Cool
Nov53Bracing
Dec44Bracing

UV index in Catonsville 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 Catonsville peaks around July 10 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 10UV 9Dec 19UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Catonsville 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 Catonsville is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1216 µg/m³Nov 118 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar13Moderate
Apr13Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec10Good
Location & terrain

Where is Catonsville?

Catonsville sits at 39.3°N, 76.7°W, 479 ft above sea level, in United States. The nearest listed city is Arbutus, 1.9 mi away.

Topography around Catonsville

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

Within 2 miles, the terrain around Catonsville has only modest variations in elevation — a maximum elevation change of 466 ft around an average of 407 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 735 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,031 ft.

The land around Catonsville is covered by trees (58%) and artificial surfaces (31%) within 2 miles, trees (57%) and artificial surfaces (28%) within 10 miles, and trees (53%) within 50 miles.

2 miles
466 ft
10 miles
735 ft
50 miles
2,031 ft
treesgrasslandcroplandartificial surfaceswater
October weather nearby: Arbutus 1.9 mi · Ilchester 2.5 mi · Woodlawn 3.7 mi · Ellicott City 3.7 mi · Elkridge 4.3 mi · West Elkridge 4.3 mi · Gwynn Oak 5.0 mi · Lochearn 5.0 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 Catonsville (39.2721°, -76.7319°, elevation 479 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).