McDonough weather in January

In January, McDonough sees average daytime highs of 54°F and overnight lows near 36°F, with 4.0 in of precipitation across 10.1 wet days and about 10 hours of daylight. It is the 12th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 54°F through the month. The sky is clear or mostly clear about 37% 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 McDonough's 6th-clearest and 1st-windiest month. For the whole year in context, see McDonough's year-round climate.

Daytime high
54°
12th warmest
Overnight low
36°
1st coldest
Precipitation
4.0 in
10.1 wet days
Daylight
10 hours
7:46 AM – 5:46 PM
Cloud cover
57%
6th clearest
Wind
8 mph
1st windiest
Solar energy
2.67 kWh/m²
Travel score
3.3
out of 10

McDonough is city in and the county seat of Henry County, Georgia, United States.

Density
706/km²
people per km²

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 54°F through the month.

A typical January day in McDonough reaches about 54°F in the afternoon and slips back to 36°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 40°F and 66°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)
15437
25437
35437
45437
55437
65436
75436
85436
95436
105436
115436
125436
135436
145435
155435
165435
175435
185435
195435
205435
215435
225435
235435
245435
255435
265435
275435
285435
295535
305535
315536

How January really feels in McDonough

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.

McDonough weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan54° / 36°4.010.10.6103.3
Feb58° / 39°4.39.50.310.84.3
Mar65° / 45°4.39.90.111.76.0
Apr73° / 52°3.18.8012.87.0
May81° / 61°2.99.5013.76.4
Jun87° / 69°3.813.9014.24.4
Jul89° / 72°4.015.30143.7
Aug88° / 71°3.813013.24.1
Sep83° / 65°3.68.6012.26.1
Oct74° / 53°2.96.6011.27.5
Nov64° / 43°3.68.2010.36.1
Dec56° / 38°4.29.70.29.83.8

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% 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 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34357
44357
54357
64357
74357
84258
94357
104456
114456
124456
134555
144654
154654
164753
174852
184852
194951
204951
214951
225050
235050
245050
255050
265050
275050
284951
294951
304852
314852

Chance of precipitation in January

Any precipitationSnow

McDonough gets around 4.0 in of rain and snow over 10.1 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 33% and peaks near 33% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1332
2322
3322
4322
5322
6322
7322
8332
9332
10332
11332
12332
13332
14332
15332
16332
17332
18332
19332
20332
21332
22332
23332
24332
25322
26322
27322
28322
29321
30321
31311

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
190811
289911
389911
489911
590910
690910
791810
891810
991810
1092710
1192710
1292710
1393610
1493610
1593610
1693610
1794510
1894510
1994510
2095500
2196400
2296400
2396400
2496400
2596400
2696400
2796400
2896400
2996400
3095410
3195410

Wind in January

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

Across January, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47light breeze
57light breeze
67light 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 7:45 AM to 7:40 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)
19.87:455:34
29.87:455:35
39.87:465:36
49.87:465:36
59.97:465:37
69.97:465:38
79.97:465:39
89.97:465:39
99.97:465:40
109.97:465:41
119.97:465:42
129.97:465:43
1310.07:465:44
1410.07:465:44
1510.07:465:45
1610.07:465:46
1710.07:455:47
1810.07:455:48
1910.17:455:49
2010.17:455:50
2110.17:445:51
2210.17:445:52
2310.17:445:53
2410.27:435:53
2510.27:435:54
2610.27:425:55
2710.27:425:56
2810.37:415:57
2910.37:415:58
3010.37:405:59
3110.37:406:00

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.67 kWh/m².

For context, solar energy here swings from a low near 2.36 kWh/m² to a high of 6.12 kWh/m² in May across the year — January's 2.67 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.4Moderate
22.4Moderate
32.4Moderate
42.4Moderate
52.4Moderate
62.4Moderate
72.5Moderate
82.5Moderate
92.5Moderate
102.5Moderate
112.5Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.8Moderate
202.8Moderate
212.8Moderate
222.8Moderate
232.9Moderate
242.9Moderate
252.9Moderate
262.9Moderate
272.9Moderate
283.0Moderate
293.0Moderate
303.0Moderate
313.0Moderate
Planning a trip in January

Is January a good time to visit McDonough?

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

3.3
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 McDonough.

What to pack for McDonough in January

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

In January, McDonough sees daytime highs around 54°F and nights near 36°F. Worth packing: a warm layer and rain gear. About 10 days see rain.

a warm layerrain gear

UV index in McDonough 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 McDonough peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 highHighModerateJun 23UV 9Dec 19UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep7Very high
Oct5High
Nov4Moderate
Dec3Moderate

Air quality in McDonough 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 McDonough 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 McDonough?

McDonough sits at 33.4°N, 84.1°W, 866 ft above sea level, in United States. The nearest listed city is Stockbridge, 8.1 mi away.

Topography around McDonough

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

Within 2 miles, the terrain around McDonough has only modest variations in elevation — a maximum elevation change of 207 ft around an average of 823 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 489 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,490 ft.

The land around McDonough is covered by trees (56%) and artificial surfaces (22%) within 2 miles, trees (68%) and grassland (21%) within 10 miles, and trees (82%) within 50 miles.

2 miles
207 ft
10 miles
489 ft
50 miles
1,490 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Stockbridge 8.1 mi · Griffin 16 mi · Conyers 17 mi · Forest Park 17 mi · Riverdale 17 mi · Fayetteville 18 mi · Stonecrest 18 mi · Candler-McAfee 21 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 McDonough (33.4473°, -84.1469°, elevation 866 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).