Georgetown weather in December

In December, Georgetown sees average daytime highs of 61°F and overnight lows near 42°F, with 3.0 in of precipitation across 7.4 wet days and about 10.1 hours of daylight. It is the 11th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 64°F in the first days to 59°F by the end. The sky is clear or mostly clear about 43% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 12 min at the start of December to 10 hours by month's end. Set against the rest of the year, December is Georgetown's 9th-clearest and 6th-windiest month. For the whole year in context, see Georgetown's year-round climate.

Daytime high
61°
11th warmest
Overnight low
42°
2nd coldest
Precipitation
3.0 in
7.4 wet days
Daylight
10 hours
7:26 AM – 5:28 PM
Cloud cover
53%
9th clearest
Wind
9 mph
6th windiest
Solar energy
2.71 kWh/m²
Travel score
5.5
out of 10

Georgetown is city in and county seat of Williamson County, Texas, United States.

Density
491/km²
people per km²
Founded
1848

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 64°F in the first days to 59°F by the end.

A typical December day in Georgetown reaches about 61°F in the afternoon and slips back to 42°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 48°F and 74°F. Set against its neighbours, December runs about 8°F cooler than November and on par with January.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16445
26444
36444
46344
56344
66344
76343
86243
96243
106243
116242
126242
136242
146142
156142
166142
176142
186141
196041
206041
216041
226041
236041
246041
256041
266040
275940
285940
295940
305940
315940

How December really feels in Georgetown

Once humidity and wind are folded in, December 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

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Georgetown weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan60° / 40°2.46.610.25.2
Feb64° / 44°2.57.510.96.0
Mar71° / 51°3.19.111.86.8
Apr78° / 58°2.98.612.77.1
May84° / 66°4.611.313.55.4
Jun91° / 72°2.98.613.93.9
Jul94° / 75°1.65.713.83.0
Aug94° / 74°2.2613.13.0
Sep88° / 69°3.07.212.24.8
Oct79° / 59°3.77.311.27.2
Nov69° / 49°2.7710.57.0
Dec61° / 42°3.07.410.15.5

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 8% of December, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35446
45446
55347
65347
75248
85248
95248
105248
115149
125149
135248
145248
155149
165149
175149
185149
195248
205149
215149
225149
235050
245050
255050
265050
275050
285050
295050
305050
315050

Chance of precipitation in December

Any precipitation

Georgetown gets around 3.0 in of rain and snow over 7.4 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 24% and peaks near 26% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
324
424
524
625
725
825
925
1026
1126
1226
1325
1425
1525
1625
1725
1824
1924
2024
2123
2223
2323
2422
2522
2622
2722
2822
2922
3022
3122

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 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
180983
281973
381973
481973
581973
682963
783962
883962
983962
1085852
1185852
1285852
1386851
1486851
1587841
1687841
1787841
1888741
1988741
2088741
2188741
2288741
2389731
2489731
2589731
2689731
2789731
2890631
2989641
3089641
3189641

Wind in December

Winds average 9 mph in December.

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

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 12 min at the start of December to 10 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:16 AM to 7:33 AM, and sunset from 5:25 PM to 5:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.27:165:25
210.17:165:25
310.17:175:25
410.17:185:25
510.17:195:25
610.17:195:25
710.17:205:26
810.17:215:26
910.17:225:26
1010.17:225:26
1110.17:235:26
1210.07:245:27
1310.07:245:27
1410.07:255:27
1510.07:255:27
1610.07:265:28
1710.07:275:28
1810.07:275:28
1910.07:285:29
2010.07:285:29
2110.07:295:30
2210.07:295:30
2310.07:305:31
2410.07:305:31
2510.07:315:32
2610.07:315:32
2710.07:315:33
2810.07:325:33
2910.07:325:34
3010.07:325:35
3110.07:335:35

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.71 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.71 kWh/m² to a high of 6.81 kWh/m² in July across the year — December's 2.71 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.8Moderate
62.7Moderate
72.7Moderate
82.7Moderate
92.7Moderate
102.7Moderate
112.7Moderate
122.7Moderate
132.7Moderate
142.7Moderate
152.7Moderate
162.7Moderate
172.7Moderate
182.7Moderate
192.7Moderate
202.7Moderate
212.7Moderate
222.7Moderate
232.7Moderate
242.7Moderate
252.7Moderate
262.8Moderate
272.8Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Is December a good time to visit Georgetown?

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

5.5
Sightseeing
6th-best month of the year
0.9
Beach & pool
11th-best month of the year

December is a reasonable time to visit Georgetown for sightseeing.

What to pack for Georgetown in December

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

In December, Georgetown sees daytime highs around 61°F and nights near 42°F. Worth packing: a warm layer. About 7 days see rain.

a warm layer

UV index in Georgetown in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Georgetown peaks around July 24 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 24UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr9Very high
May10Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Georgetown 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 Georgetown is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1417 µg/m³Dec 127 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar9Good
Apr10Good
May14Moderate
Jun15Moderate
Jul18Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Georgetown?

Georgetown sits at 30.6°N, 97.7°W, 755 ft above sea level, in United States. The nearest listed city is Round Rock, 8.7 mi away.

Topography around Georgetown

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

Within 2 miles, the terrain around Georgetown has only modest variations in elevation — a maximum elevation change of 207 ft around an average of 755 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 522 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,463 ft.

The land around Georgetown is covered by trees (34%), grassland (32%) and artificial surfaces (30%) within 2 miles, grassland (40%) and trees (33%) within 10 miles, and grassland (44%) and trees (41%) within 50 miles.

2 miles
207 ft
10 miles
522 ft
50 miles
1,463 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Round Rock 8.7 mi · Brushy Creek 9.3 mi · Hutto 9.9 mi · Leander 11 mi · Cedar Park 12 mi · Pflugerville 14 mi · Jollyville 14 mi · Taylor 17 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 Georgetown (30.6327°, -97.6772°, elevation 755 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).