Trotwood weather in December

In December, Trotwood sees average daytime highs of 41°F and overnight lows near 28°F, with 3.4 in of precipitation across 9.7 wet days and about 9.2 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 44°F in the first days to 39°F by the end. The sky is clear or mostly clear about 18% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 24 min at the start of December to 9 h 12 min by month's end. Set against the rest of the year, December is Trotwood's 11th-clearest and 6th-windiest month. For the whole year in context, see Trotwood's year-round climate.

Daytime high
41°
10th warmest
Overnight low
28°
3rd coldest
Precipitation
3.4 in
9.7 wet days
Daylight
9 h 12 min
7:58 AM – 5:09 PM
Cloud cover
73%
11th clearest
Wind
8 mph
6th windiest
Solar energy
1.64 kWh/m²
Travel score
0.2
out of 10

Trotwood is city in Montgomery County, Ohio, United States.

Density
305/km²
people per km²

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 44°F in the first days to 39°F by the end.

A typical December day in Trotwood reaches about 41°F in the afternoon and slips back to 28°F overnight — a 13°F spread between the day's warmth and the night's chill. On most days the high lands between 27°F and 56°F. Set against its neighbours, December runs about 10°F cooler than November and about 4°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14532
24531
34431
44431
54330
64330
74230
84229
94229
104229
114128
124128
134128
144128
154028
164027
174027
184027
194027
204027
213927
223926
233926
243926
253926
263926
273926
283926
293826
303826
313825

How December really feels in Trotwood

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 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
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Trotwood weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°3.29.84.69.50.0
Feb40° / 25°2.79.24.110.40.2
Mar50° / 33°3.911.12.311.72.2
Apr63° / 44°4.612.70.5135.0
May72° / 54°4.613.3014.26.1
Jun80° / 63°4.212.6014.86.0
Jul83° / 66°3.411.6014.55.6
Aug82° / 65°3.210.1013.66.3
Sep76° / 57°2.77.8012.37.2
Oct64° / 46°2.98.40.210.95.9
Nov51° / 36°3.2919.82.6
Dec41° / 28°3.49.73.39.20.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 18% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13070
22971
32971
42773
52773
62773
72674
82773
92674
102674
112575
122674
132674
142674
152674
162773
172773
182773
192773
202773
212872
222872
232872
242872
252872
262971
272971
282971
292872
302872
312872

Chance of precipitation in December

Any precipitationSnow

Trotwood gets around 3.4 in of rain and snow over 9.7 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 31% and peaks near 33% on the wettest days, and about 3 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1337
2327
3327
4328
5328
6329
7329
83110
93110
103111
113111
123111
133111
143111
153112
163112
173112
183112
193112
203112
213112
223111
233111
243111
253111
263212
273212
283212
293212
303213
313313

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
26991
27991
28991
29991
30991
31991

Wind in December

Winds average 8 mph in December.

Across December, daily wind ranges from about 8 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 24 min at the start of December to 9 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:45 AM to 8:04 AM, and sunset from 5:09 PM to 5:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.47:455:09
29.47:465:08
39.47:475:08
49.37:485:08
59.37:495:08
69.37:505:08
79.37:515:08
89.37:525:08
99.37:525:08
109.27:535:08
119.27:545:08
129.27:555:08
139.27:565:09
149.27:565:09
159.27:575:09
169.27:585:09
179.27:585:10
189.27:595:10
199.27:595:10
209.28:005:11
219.28:005:11
229.28:015:12
239.28:015:12
249.28:025:13
259.28:025:13
269.28:035:14
279.28:035:14
289.28:035:15
299.28:035:16
309.28:045:16
319.28:045:17

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.64 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.64 kWh/m² to a high of 6.22 kWh/m² in June across the year — December's 1.64 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.7Dim
81.7Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.6Dim
261.6Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Is December a good time to visit Trotwood?

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

0.2
Sightseeing
10th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Trotwood.

What to pack for Trotwood in December

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

In December, Trotwood sees daytime highs around 41°F and nights near 28°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Trotwood in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Trotwood peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 21UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun10Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Trotwood in December

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Trotwood is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1117 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb12Good
Mar12Good
Apr12Moderate
May15Moderate
Jun17Moderate
Jul17Moderate
Aug15Moderate
Sep12Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Trotwood?

Trotwood sits at 39.8°N, 84.3°W, 840 ft above sea level, in United States. The nearest listed city is Dayton, 6.8 mi away.

Topography around Trotwood

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

Within 2 miles, the terrain around Trotwood has only modest variations in elevation — a maximum elevation change of 226 ft around an average of 883 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 459 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,040 ft.

The land around Trotwood is covered by trees (43%), cropland (26%) and grassland (23%) within 2 miles, cropland (33%), trees (31%) and grassland (22%) within 10 miles, and cropland (59%) and trees (25%) within 50 miles.

2 miles
226 ft
10 miles
459 ft
50 miles
1,040 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Dayton 6.8 mi · Vandalia 8.7 mi · Riverside 9.9 mi · Huber Heights 11 mi · Kettering 11 mi · Miamisburg 11 mi · Centerville 14 mi · Beavercreek 14 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 Trotwood (39.7973°, -84.3113°, elevation 840 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).