Leander weather in December

In December, Leander sees average daytime highs of 62°F and overnight lows near 43°F, with 2.8 in of rain across 7.5 wet days and about 10.1 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 64°F in the first days to 60°F by the end. The sky is clear or mostly clear about 41% 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 Leander's 9th-clearest and 6th-windiest month. For the whole year in context, see Leander's year-round climate.

Daytime high
62°
11th warmest
Overnight low
43°
2nd coldest
Rainfall
2.8 in
7.5 wet days
Daylight
10 hours
7:27 AM – 5:29 PM
Cloud cover
54%
9th clearest
Wind
8 mph
6th windiest
Solar energy
2.69 kWh/m²
Travel score
5.7
out of 10

Leander is city in Wiliamson Couty, Texas, United States.

Density
768/km²
people per km²
Founded
1882

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 60°F by the end.

A typical December day in Leander reaches about 62°F in the afternoon and slips back to 43°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)
16545
26545
36445
46445
56444
66444
76344
86344
96344
106343
116243
126243
136243
146243
156242
166242
176242
186142
196142
206142
216142
226142
236042
246041
256041
266041
276041
286041
296041
306041
316041

How December really feels in Leander

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.

Leander weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan60° / 41°2.36.810.25.4
Feb64° / 45°2.47.310.96.2
Mar71° / 51°2.98.811.86.9
Apr78° / 58°3.08.212.77.1
May85° / 66°4.310.813.55.3
Jun91° / 73°2.88.713.93.8
Jul95° / 75°1.65.813.82.9
Aug95° / 75°2.15.813.12.9
Sep89° / 69°2.97.412.24.6
Oct80° / 60°3.47.111.27.1
Nov69° / 50°2.76.610.57.1
Dec62° / 43°2.87.510.15.7

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 49%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15644
25545
35446
45347
55446
65347
75347
85248
95248
105248
115248
125248
135149
145149
155248
165149
175149
185149
195149
205050
215050
224951
235050
244951
254951
264951
274951
284951
294951
304951
315050

Chance of precipitation in December

Any precipitation

Leander gets around 2.8 in of rain over 7.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 24% and peaks near 27% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
123
223
324
424
525
625
726
826
926
1027
1127
1227
1327
1427
1526
1626
1726
1825
1925
2024
2124
2223
2323
2422
2522
2622
2722
2821
2921
3021
3121

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 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1781093
279993
379993
479993
580983
680983
780983
880983
982972
1082972
1182972
1282972
1383962
1484961
1584961
1684961
1785951
1885951
1985951
2085951
2185951
2285951
2386941
2486941
2586941
2687841
2787841
2886842
2986842
3088741
3188741

Wind in December

Winds average 8 mph in December.

Across December, 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.

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
298light breeze
308light breeze
318light 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 5:26 PM to 5:36 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.27:165:26
210.27:175:26
310.17:185:26
410.17:195:26
510.17:195:26
610.17:205:26
710.17:215:26
810.17:215:27
910.17:225:27
1010.17:235:27
1110.17:235:27
1210.17:245:27
1310.07:255:28
1410.07:255:28
1510.07:265:28
1610.07:275:29
1710.07:275:29
1810.07:285:29
1910.07:285:30
2010.07:295:30
2110.07:295:31
2210.07:305:31
2310.07:305:31
2410.07:315:32
2510.07:315:33
2610.07:315:33
2710.07:325:34
2810.07:325:34
2910.07:335:35
3010.07:335:35
3110.07:335:36

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 2.69 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 2.69 kWh/m² to a high of 6.77 kWh/m² in July across the year — December's 2.69 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
12.8Moderate
22.8Moderate
32.8Moderate
42.8Moderate
52.7Moderate
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
262.7Moderate
272.7Moderate
282.8Moderate
292.8Moderate
302.8Moderate
312.8Moderate
Planning a trip in December

Is December a good time to visit Leander?

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

5.7
Sightseeing
6th-best month of the year
1.1
Beach & pool
11th-best month of the year

December is a reasonable time to visit Leander for sightseeing.

What to pack for Leander in December

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

In December, Leander sees daytime highs around 62°F and nights near 43°F. Worth packing: a warm layer. About 8 days see rain.

a warm layer

UV index in Leander 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 Leander peaks around August 10 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 highHighModerateAug 10UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar7High
Apr10Very high
May10Extreme
Jun10Extreme
Jul10Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Leander 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 Leander 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 Leander?

Leander sits at 30.6°N, 97.9°W, 978 ft above sea level, in United States. The nearest listed city is Cedar Park, 5.6 mi away.

Topography around Leander

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

Within 2 miles, the terrain around Leander has only modest variations in elevation — a maximum elevation change of 223 ft around an average of 994 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 709 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,604 ft.

The land around Leander is covered by artificial surfaces (35%), grassland (31%) and trees (26%) within 2 miles, trees (59%) and grassland (24%) within 10 miles, and trees (46%) and grassland (42%) within 50 miles.

2 miles
223 ft
10 miles
709 ft
50 miles
1,604 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Cedar Park 5.6 mi · Brushy Creek 8.1 mi · Jollyville 11 mi · Georgetown 11 mi · Round Rock 11 mi · Pflugerville 17 mi · Hutto 19 mi · University of Texas 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 Leander (30.5788°, -97.8531°, elevation 978 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).