La Porte weather in December

In December, La Porte sees average daytime highs of 37°F and overnight lows near 26°F, with 2.4 in of precipitation across 9.4 wet days and about 9 hours of daylight. It is the 10th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 41°F in the first days to 35°F by the end. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 12 min at the start of December to 9 hours by month's end. Set against the rest of the year, December is La Porte's 11th-clearest and 6th-windiest month. For the whole year in context, see La Porte's year-round climate.

Daytime high
37°
10th warmest
Overnight low
26°
3rd coldest
Precipitation
2.4 in
9.4 wet days
Daylight
9 hours
7:13 AM – 4:13 PM
Cloud cover
75%
11th clearest
Wind
9 mph
6th windiest
Solar energy
1.56 kWh/m²
Travel score
0.0
out of 10

La Porte is city in LaPorte County, Indiana, United States of America.

Density
684/km²
people per km²
Founded
1832

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 41°F in the first days to 35°F by the end.

A typical December day in La Porte reaches about 37°F in the afternoon and slips back to 26°F overnight — a 12°F spread between the day's warmth and the night's chill. On most days the high lands between 23°F and 51°F. Set against its neighbours, December runs about 11°F cooler than November and about 5°F warmer than January.

20°40°60°151015202531
Avg high (°F)Avg low (°F)
14230
24129
34129
44029
54028
64028
73928
83927
93827
103826
113826
123826
133726
143726
153725
163725
173625
183625
193624
203624
213624
223524
233524
243524
253524
263523
273523
283523
293523
303423
313422

How December really feels in La Porte

Once humidity and wind are folded in, December 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
8 feel bitter (≤ 14°F)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

La Porte weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 20°2.610.57.79.30.0
Feb36° / 22°2.18.25.510.30.0
Mar47° / 30°3.010.83.411.71.4
Apr59° / 41°4.212.2113.14.3
May70° / 51°4.513.2014.36.0
Jun79° / 61°4.212.10156.3
Jul83° / 65°4.111.7014.75.9
Aug81° / 63°4.011.1013.76.5
Sep75° / 56°3.29.3012.36.9
Oct62° / 45°3.210.10.110.95.3
Nov48° / 35°2.99.81.99.71.9
Dec37° / 26°2.49.45.290.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12872
22872
32773
42773
52674
62674
72674
82476
92476
102377
112377
122377
132476
142476
152476
162377
172476
182476
192476
202476
212476
222476
232476
242476
252575
262575
272476
282377
292377
302377
312377

Chance of precipitation in December

Any precipitationSnow

La Porte gets around 2.4 in of rain and snow over 9.4 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 31% and peaks near 34% on the wettest days, and about 5 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
13413
23314
33314
43314
53214
63215
73215
83215
93115
103115
113116
123116
133116
143116
153116
163116
173116
183116
193117
203017
213017
223017
233018
243018
253018
263019
273119
283119
293120
303120
313221

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 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1991
2991
3991
4991
5991
6991
7991
8991
9991
10991
11991
12991
13991
14991
15991
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

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 9 h 12 min at the start of December to 9 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 7:00 AM to 7:19 AM, and sunset from 4:13 PM to 4:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.27:004:13
29.27:014:13
39.27:024:12
49.17:034:12
59.17:044:12
69.17:054:12
79.17:064:12
89.17:074:12
99.17:084:12
109.17:094:12
119.07:094:12
129.07:104:12
139.07:114:12
149.07:124:13
159.07:124:13
169.07:134:13
179.07:144:13
189.07:144:14
199.07:154:14
209.07:154:14
219.07:164:15
229.07:164:15
239.07:174:16
249.07:174:16
259.07:184:17
269.07:184:17
279.07:184:18
289.07:194:19
299.07:194:19
309.07:194:20
319.07:194:21

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.56 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.56 kWh/m² to a high of 6.47 kWh/m² in June across the year — December's 1.56 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.5Dim
181.5Dim
191.5Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.6Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in December

Is December a good time to visit La Porte?

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

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

December is a weaker month for outdoor sightseeing in La Porte.

What to pack for La Porte in December

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

In December, La Porte sees daytime highs around 37°F and nights near 26°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 9 days see rain.

a warm layera heavy coatrain gear

Sea temperature near La Porte in December

The nearest coast averages about 43°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 21 mi away) is warmest in August at about 73°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 11 to Sep 17 — about 2.3 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May46Bracing
Jun58Bracing
Jul70Refreshing
Aug73Refreshing
Sep69Refreshing
Oct59Bracing
Nov49Bracing
Dec43Bracing

UV index in La Porte in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in La Porte peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateLowJun 20UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in La Porte 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 La Porte is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar14Moderate
Apr13Moderate
May15Moderate
Jun15Moderate
Jul17Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is La Porte?

La Porte sits at 41.6°N, 86.7°W, 817 ft above sea level, in United States. The nearest listed city is Michigan City, 12 mi away.

Topography around La Porte

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

Within 2 miles, the terrain around La Porte has only modest variations in elevation — a maximum elevation change of 135 ft around an average of 810 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 417 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 758 ft.

The land around La Porte is covered by trees (39%) and artificial surfaces (20%) within 2 miles, cropland (46%) and trees (38%) within 10 miles, and cropland (41%), water (26%) and trees (22%) within 50 miles.

2 miles
135 ft
10 miles
417 ft
50 miles
758 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Michigan City 12 mi · Valparaiso 21 mi · Portage 24 mi · South Bend 24 mi · Hobart 29 mi · Mishawaka 29 mi · Gary 33 mi · Granger 33 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 La Porte (41.6077°, -86.7139°, elevation 817 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).