Frederick weather in October

In October, Frederick sees average daytime highs of 66°F and overnight lows near 47°F, with 3.4 in of rain across 7.9 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 40% 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 Frederick's 1st-clearest and 7th-windiest month. For the whole year in context, see Frederick's year-round climate.

Daytime high
66°
6th warmest
Overnight low
47°
7th coldest
Rainfall
3.4 in
7.9 wet days
Daylight
10 h 54 min
6:26 AM – 5:23 PM
Cloud cover
53%
1st clearest
Wind
6 mph
7th windiest
Solar energy
3.29 kWh/m²
Travel score
6.3
out of 10

Frederick is city in Frederick County, Maryland, United States.

Density
1,156/km²
people per km²
Founded
1745

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 Frederick reaches about 66°F in the afternoon and slips back to 47°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 55°F and 77°F. Set against its neighbours, October runs about 12°F cooler than September and about 12°F warmer than November.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17253
27153
37153
47152
57052
67051
76951
86950
96950
106850
116849
126749
136748
146648
156648
166647
176547
186546
196446
206446
216445
226345
236345
246244
256244
266244
276143
286143
296043
306042
316042

How October really feels in Frederick

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.

Frederick 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
Jan40° / 26°3.18.73.39.50.0
Feb43° / 27°2.78.53.610.50.6
Mar52° / 35°3.810.22.511.72.8
Apr64° / 45°3.510.20.2135.6
May73° / 54°3.711.8014.16.4
Jun82° / 64°3.410.8014.75.8
Jul87° / 68°3.610.5014.54.8
Aug85° / 67°3.09.9013.55.4
Sep78° / 59°4.29.2012.36.9
Oct66° / 47°3.47.90116.3
Nov54° / 37°3.07.90.49.83.4
Dec44° / 30°3.48.82.29.30.8

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% 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 45%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25545
35545
45644
55644
65644
75644
85743
95743
105644
115644
125644
135743
145644
155644
165644
175644
185644
195545
205545
215545
225545
235446
245446
255446
265446
275446
285347
295347
305347
315347

Chance of precipitation in October

Any precipitation

Frederick gets around 3.4 in of rain over 7.9 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 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
328
427
526
626
725
825
925
1025
1126
1226
1326
1426
1526
1627
1727
1827
1927
2027
2127
2227
2327
2426
2526
2626
2726
2825
2925
3025
3124

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 79% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
160171670
260171571
363161461
463161461
565161351
667151251
769151141
869151141
971151031
107314931
117414831
127614721
137714621
147913521
158013511
168213410
178312410
188412310
198511310
208611300
218711200
228810200
238810200
24899200
25899200
26899200
27908200
28908200
29917200
30917200
31917200

Wind in October

Winds average 6 mph in October.

Across October, daily wind ranges from about 6 mph on the calmest days to 6 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
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

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 6:11 AM to 6:43 AM, and sunset from 5:46 PM to 5:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.66:115:46
211.56:125:45
311.56:135:43
411.56:145:42
511.46:155:40
611.46:165:38
711.36:175:37
811.36:185:35
911.26:195:34
1011.26:205:32
1111.26:215:30
1211.16:225:29
1311.16:235:27
1411.06:245:26
1511.06:255:25
1610.96:265:23
1710.96:275:22
1810.96:285:20
1910.86:305:19
2010.86:315:17
2110.76:325:16
2210.76:335:15
2310.76:345:13
2410.66:355:12
2510.66:365:11
2610.56:375:09
2710.56:385:08
2810.56:395:07
2910.46:415:06
3010.46:425:05
3110.36:435:04

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 3.29 kWh/m².

For context, solar energy here swings from a low near 1.86 kWh/m² to a high of 6.15 kWh/m² in June across the year — October's 3.29 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
143.3Moderate
153.3Moderate
163.3Moderate
173.2Moderate
183.2Moderate
193.2Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.0Moderate
243.0Moderate
253.0Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in October

Is October a good time to visit Frederick?

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

6.3
Sightseeing
3rd-best month of the year
2.6
Beach & pool
6th-best month of the year

October is a reasonable time to visit Frederick for sightseeing.

What to pack for Frederick in October

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

In October, Frederick sees daytime highs around 66°F and nights near 47°F. Little to plan around — just the basics. About 8 days see rain.

UV index in Frederick 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 Frederick peaks around July 10 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug7High
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Frederick 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 Frederick is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (November, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1317 µg/m³Nov 138 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb11Good
Mar12Moderate
Apr12Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct9Good
Nov8Good
Dec9Good
Location & terrain

Where is Frederick?

Frederick sits at 39.4°N, 77.4°W, 285 ft above sea level, in United States. The nearest listed city is Ballenger Creek, 3.1 mi away.

Topography around Frederick

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

Within 2 miles, the terrain around Frederick has only modest variations in elevation — a maximum elevation change of 482 ft around an average of 312 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,791 ft; within 50 miles, large variations in elevation — a maximum elevation change of 2,756 ft.

The land around Frederick is covered by artificial surfaces (41%), trees (28%) and grassland (23%) within 2 miles, trees (47%), grassland (25%) and cropland (22%) within 10 miles, and trees (59%) and grassland (20%) within 50 miles.

2 miles
482 ft
10 miles
1,791 ft
50 miles
2,756 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Ballenger Creek 3.1 mi · Damascus 14 mi · Germantown 18 mi · Montgomery Village 20 mi · Gaithersburg 22 mi · Leesburg 22 mi · Hagerstown 23 mi · Redland 24 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 Frederick (39.4143°, -77.4105°, elevation 285 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).