Greenville weather in January

In January, Greenville sees average daytime highs of 55°F and overnight lows near 37°F, with 3.1 in of precipitation across 7.4 wet days and about 10.1 hours of daylight. It is the 12th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 55°F through the month. The sky is clear or mostly clear about 40% 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 24 min by month's end. Set against the rest of the year, January is Greenville's 8th-clearest and 4th-windiest month. For the whole year in context, see Greenville's year-round climate.

Daytime high
55°
12th warmest
Overnight low
37°
1st coldest
Precipitation
3.1 in
7.4 wet days
Daylight
10 hours
7:33 AM – 5:35 PM
Cloud cover
53%
8th clearest
Wind
9 mph
4th windiest
Solar energy
2.75 kWh/m²
Travel score
3.8
out of 10

Greenville is city in Hunt County, Texas, United States.

Density
304/km²
people per km²
Founded
1846

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 55°F through the month.

A typical January day in Greenville reaches about 55°F in the afternoon and slips back to 37°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 69°F. Set against its neighbours, January runs about 2°F cooler than December and about 4°F cooler than February.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
15437
25437
35437
45437
55437
65437
75437
85437
95437
105437
115437
125437
135437
145437
155537
165537
175537
185537
195537
205537
215537
225537
235537
245637
255637
265637
275638
285638
295638
305638
315638

How January really feels in Greenville

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.

Greenville weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan55° / 37°3.17.40.510.13.8
Feb59° / 40°3.380.610.84.7
Mar66° / 48°4.49.70.311.76.2
Apr74° / 55°5.19.7012.86.9
May81° / 64°5.911.6013.76.1
Jun88° / 72°3.79.4014.14.5
Jul93° / 75°2.26.70143.5
Aug93° / 75°2.05.9013.23.5
Sep87° / 68°3.06.4012.25.5
Oct76° / 57°4.17.9011.27.4
Nov65° / 47°3.67.60.110.36.4
Dec56° / 39°4.17.90.29.94.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 40% 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 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35149
45149
55149
65149
75149
85149
95149
105149
115149
125149
135149
145149
155149
165149
175149
185149
195149
205149
215149
225149
235050
244951
255050
265050
275050
285050
294951
304951
314852

Chance of precipitation in January

Any precipitationSnow

Greenville gets around 3.1 in of rain and snow over 7.4 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 24% and peaks near 25% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1242
2242
3242
4242
5242
6242
7242
8242
9242
10242
11252
12252
13252
14252
15251
16251
17251
18241
19241
20241
21241
22241
23241
24241
25231
26232
27232
28232
29232
30232
31232

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 94% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19343
29343
39343
49343
59343
69343
79343
89343
99442
109442
119442
129442
139541
149631
159631
169631
179631
189631
199631
209622
219622
229622
239622
249622
259622
269622
279622
289622
299523
309523
319523

Wind in January

Winds average 9 mph in January.

Across January, 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
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light 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 24 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 36 minutes over January. Sunrise moves from 7:32 AM to 7:27 AM, and sunset from 5:23 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.87:325:23
29.97:325:24
39.97:335:24
49.97:335:25
59.97:335:26
69.97:335:27
79.97:335:27
89.97:335:28
99.97:335:29
109.97:335:30
1110.07:335:30
1210.07:335:31
1310.07:335:32
1410.07:335:33
1510.07:335:34
1610.07:335:35
1710.17:335:36
1810.17:325:37
1910.17:325:37
2010.17:325:38
2110.17:325:39
2210.17:315:40
2310.27:315:41
2410.27:305:42
2510.27:305:43
2610.27:305:44
2710.37:295:45
2810.37:295:46
2910.37:285:47
3010.37:285:48
3110.47:275:48

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 2.75 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 6.7 kWh/m² in July across the year — January's 2.75 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
12.5Moderate
22.5Moderate
32.5Moderate
42.6Moderate
52.6Moderate
62.6Moderate
72.6Moderate
82.6Moderate
92.6Moderate
102.6Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.8Moderate
172.8Moderate
182.8Moderate
192.8Moderate
202.9Moderate
212.9Moderate
222.9Moderate
232.9Moderate
242.9Moderate
253.0Moderate
263.0Moderate
273.0Moderate
283.0Moderate
293.0Moderate
303.1Moderate
313.1Moderate
Planning a trip in January

Is January a good time to visit Greenville?

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

3.8
Sightseeing
10th-best month of the year
0.0
Beach & pool
12th-best month of the year

January is a weaker month for outdoor sightseeing in Greenville.

What to pack for Greenville in January

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

In January, Greenville sees daytime highs around 55°F and nights near 37°F. Worth packing: a warm layer. About 7 days see rain.

a warm layer

UV index in Greenville 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 Greenville peaks around June 21 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highVery highHighModerateJun 21UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr9Very high
May9Very high
Jun10Extreme
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Greenville 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 Greenville is worst in July — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (January, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1519 µg/m³Jan 17 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr10Good
May14Moderate
Jun16Moderate
Jul20Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Greenville?

Greenville sits at 33.1°N, 96.1°W, 541 ft above sea level, in United States. The nearest listed city is Rockwall, 25 mi away.

Topography around Greenville

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

Within 2 miles, the terrain around Greenville has only modest variations in elevation — a maximum elevation change of 102 ft around an average of 545 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 269 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 584 ft.

The land around Greenville is covered by trees (40%), grassland (30%) and artificial surfaces (21%) within 2 miles, grassland (58%) and trees (30%) within 10 miles, and grassland (51%) and trees (28%) within 50 miles.

2 miles
102 ft
10 miles
269 ft
50 miles
584 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Rockwall 25 mi · Wylie 26 mi · Terrell 29 mi · McKinney 29 mi · Sulphur Springs 29 mi · Sachse 30 mi · Murphy 30 mi · Rowlett 31 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 Greenville (33.1384°, -96.1108°, elevation 541 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).