Dunwoody weather in January

In January, Dunwoody sees average daytime highs of 52°F and overnight lows near 34°F, with 4.6 in of precipitation across 10.4 wet days and about 10 hours of daylight. It is the 12th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 52°F through the month. The sky is clear or mostly clear about 35% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 h 48 min at the start of January to 10 h 18 min by month's end. Set against the rest of the year, January is Dunwoody's 7th-clearest and 1st-windiest month. For the whole year in context, see Dunwoody's year-round climate.

Daytime high
52°
12th warmest
Overnight low
34°
1st coldest
Precipitation
4.6 in
10.4 wet days
Daylight
10 hours
7:47 AM – 5:46 PM
Cloud cover
58%
7th clearest
Wind
8 mph
1st windiest
Solar energy
2.6 kWh/m²
Travel score
2.8
out of 10

Dunwoody is city in DeKalb County, Georgia, United States.

Density
1,429/km²
people per km²
Founded
2008

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 52°F through the month.

A typical January day in Dunwoody reaches about 52°F in the afternoon and slips back to 34°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 39°F and 65°F. Set against its neighbours, January runs about 2°F cooler than December and about 4°F cooler than February.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
15236
25236
35235
45235
55235
65235
75235
85235
95235
105235
115235
125235
135234
145234
155234
165234
175234
185234
195234
205234
215234
225234
235234
245234
255234
265234
275234
285334
295334
305334
315334

How January really feels in Dunwoody

Once humidity and wind are folded in, January 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 January is cold — wind chill drags the overnight "feels like" below the raw low.

Dunwoody weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan52° / 34°4.610.40.7102.8
Feb56° / 37°4.6100.510.73.7
Mar64° / 44°4.710.30.111.75.6
Apr72° / 51°4.09.6012.86.7
May79° / 60°3.49.8013.76.7
Jun85° / 68°4.113.7014.24.8
Jul88° / 71°4.114.60144.1
Aug87° / 70°4.112.7013.34.5
Sep82° / 64°3.68.7012.26.4
Oct72° / 53°3.47.2011.17.3
Nov62° / 42°3.98.5010.25.6
Dec54° / 37°4.610.30.39.83.3

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14159
24159
34159
44159
54159
64159
74159
84258
94258
104258
114357
124456
134555
144555
154555
164654
174753
184753
194753
204852
214951
224951
234951
245050
254951
264951
274951
284852
294852
304852
314753

Chance of precipitation in January

Any precipitationSnow

Dunwoody gets around 4.6 in of rain and snow over 10.4 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 34% and peaks near 36% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1342
2342
3342
4342
5342
6352
7352
8352
9352
10352
11352
12362
13362
14362
15352
16352
17352
18342
19342
20342
21332
22332
23332
24332
25332
26322
27322
28322
29322
30322
31322

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19451
29451
39451
49451
59451
69451
79451
89451
99451
109451
119541
129541
139541
149541
159541
169541
179640
189640
199730
209730
219730
229730
239730
249730
259730
269730
279730
289730
299730
309730
319730

Wind in January

Winds average 8 mph in January, the windiest month of the year.

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

0246810151015202531
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
298light breeze
308light breeze
318light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 h 48 min at the start of January to 10 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over January. Sunrise moves from 7:47 AM to 7:42 AM, and sunset from 5:34 PM to 6:00 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:475:34
29.87:475:34
39.87:485:35
49.87:485:36
59.87:485:37
69.87:485:37
79.87:485:38
89.87:485:39
99.97:485:40
109.97:485:41
119.97:485:41
129.97:485:42
139.97:485:43
149.97:485:44
1510.07:485:45
1610.07:475:46
1710.07:475:47
1810.07:475:48
1910.07:475:48
2010.07:475:49
2110.17:465:50
2210.17:465:51
2310.17:455:52
2410.17:455:53
2510.27:455:54
2610.27:445:55
2710.27:445:56
2810.27:435:57
2910.37:435:58
3010.37:425:59
3110.37:426:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.6 kWh/m².

For context, solar energy here swings from a low near 2.29 kWh/m² to a high of 6.05 kWh/m² in May across the year — January's 2.6 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.3Moderate
22.3Moderate
32.3Moderate
42.3Moderate
52.3Moderate
62.4Moderate
72.4Moderate
82.4Moderate
92.4Moderate
102.4Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.5Moderate
152.6Moderate
162.6Moderate
172.6Moderate
182.6Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.8Moderate
232.8Moderate
242.8Moderate
252.8Moderate
262.9Moderate
272.9Moderate
282.9Moderate
292.9Moderate
302.9Moderate
313.0Moderate
Planning a trip in January

Is January a good time to visit Dunwoody?

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

2.8
Sightseeing
12th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Dunwoody.

What to pack for Dunwoody in January

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

In January, Dunwoody sees daytime highs around 52°F and nights near 34°F. Pack a warm layer. Worth having: rain gear. About 10 days see rain.

a warm layerrain gear

UV index in Dunwoody in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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 Dunwoody peaks around July 10 at about 10 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJul 10UV 10Dec 20UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun10Very high
Jul10Very high
Aug8Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in Dunwoody in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Dunwoody is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (January, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1621 µg/m³Jan 118 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr12Moderate
May15Moderate
Jun18Moderate
Jul21Moderate
Aug18Moderate
Sep13Moderate
Oct11Good
Nov10Good
Dec8Good
Location & terrain

Where is Dunwoody?

Dunwoody sits at 33.9°N, 84.3°W, 1,132 ft above sea level, in United States. The nearest listed city is Sandy Springs, 3.1 mi away.

Topography around Dunwoody

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

Within 2 miles, the terrain around Dunwoody has only modest variations in elevation — a maximum elevation change of 256 ft around an average of 1,060 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 686 ft; within 50 miles, large variations in elevation — a maximum elevation change of 3,222 ft.

The land around Dunwoody is covered by trees (69%) and artificial surfaces (27%) within 2 miles, trees (72%) and artificial surfaces (23%) within 10 miles, and trees (81%) within 50 miles.

2 miles
256 ft
10 miles
686 ft
50 miles
3,222 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Sandy Springs 3.1 mi · Chamblee 4.3 mi · Roswell 5.6 mi · Brookhaven 6.2 mi · Peachtree Corners 6.8 mi · Norcross 6.8 mi · North Druid Hills 9.3 mi · Alpharetta 9.3 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 Dunwoody (33.9462°, -84.3346°, elevation 1,132 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).