Weslaco in Winter

In winter (December, January and February), Weslaco sees average daytime highs around 73°F and overnight lows near 54°F, with 3.4 in of rain over about 15 wet days across the season. It is the coldest season of the year and the driest season of the year.

Across winter, daytime highs hold fairly steady around 73°F. The sky is clear or mostly clear about 37% of the time across winter, and the air most often feels dry.

Winter is Weslaco's best season of the year to visit on our travel score. For the whole year in context, see Weslaco's year-round climate.

Avg daytime high
73°F
coldest season of the year
Avg overnight low
54°F
Rainfall
3.4 in
15 wet days
Avg wind
10 mph
Travel score
7.5
best season of the year
Months
Dec · Jan · Feb

Temperature in Weslaco in Winter

Average highAverage lowShaded bands: 10–90% of days

Across winter, daytime highs hold fairly steady around 73°F.

A typical winter day in Weslaco reaches about 73°F and drops to 54°F overnight. The warmest of the three months is February, the coolest January.

40°60°80°DecJanFeb

How winter really feels in Weslaco

Once humidity and wind are folded in, winter brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.

Days feeling ≥ 90°F
0
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

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

Weslaco weather by month

How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan72° / 53°1.14.810.57.4
Feb76° / 56°1.04.811.17.7
Mar81° / 62°1.55.511.87.0
Apr87° / 68°1.75.512.65.3
May91° / 73°2.16.913.33.8
Jun95° / 77°2.17.713.62.7
Jul97° / 78°2.2713.52.3
Aug97° / 78°1.77.712.92.1
Sep92° / 75°3.61312.23.2
Oct87° / 68°2.57.211.45.3
Nov79° / 60°1.56.210.77.4
Dec73° / 54°1.35.410.47.5

Cloud cover in Winter

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time across winter.

0%25%50%75%100%DecJanFeb

Chance of precipitation in Winter

Any precipitation

Weslaco gets around 3.4 in of rain over 15 wet days across winter. The line is the day-by-day chance of measurable precipitation.

0%10%20%30%DecJanFeb

Humidity in Winter

DryComfortableHumidMuggyOppressiveMiserable

Most of winter feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

0%25%50%75%100%DecJanFeb

Wind in Winter

Winds average 10 mph across winter.

051015DecJanFeb

Sunrise & sunset in Winter

DaylightNight

Daylight runs from about 10 h 30 min in early December to 11 h 24 min by late February. The lit band spans sunrise to sunset each day.

12 AM4 AM8 AM12 PM4 PM8 PM12 AMDecJanFeb

Solar energy in Winter

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day across winter, about 3.4 kWh/m².

012345DecJanFeb
Planning a trip in winter

Is winter a good time to visit Weslaco?

Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.

7.5
Sightseeing
1st-best month of the year
5.8
Beach & pool
3rd-best month of the year

winter is one of the better times to visit Weslaco for general sightseeing.

What to pack for Weslaco in Winter

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

In winter, Weslaco sees daytime highs around 73°F and nights near 54°F. Worth packing: light clothes. About 15 days see rain.

light clothes

UV index in Weslaco in Winter

LowModerateHighVery highExtreme

Clear-sky midday UV across winter averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Weslaco peaks around June 21 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 5 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highExtremeVery highHighJun 21UV 12Dec 22UV 5
UV index (midday)Level
Jan5Moderate
Feb7High
Mar8Very high
Apr11Extreme
May9Very high
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec5Moderate

Air quality in Weslaco in Winter

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.

Air quality in Weslaco is worst in July — around 26 µg/m³ PM2.5 (moderate), about 3.5× the cleanest month (November, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1625 µg/m³Nov 107 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb10Good
Mar11Good
Apr13Moderate
May20Moderate
Jun21Moderate
Jul26Moderate
Aug19Moderate
Sep12Moderate
Oct8Good
Nov7Good
Dec9Good
Location & terrain

Where is Weslaco?

Weslaco sits at 26.2°N, 98.0°W, 79 ft above sea level, in United States. The nearest listed city is Donna, 3.7 mi away.

Topography around Weslaco

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

Within 2 miles, the terrain around Weslaco has only modest variations in elevation — a maximum elevation change of 59 ft around an average of 79 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 167 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 735 ft.

The land around Weslaco is covered by artificial surfaces (42%) and trees (29%) within 2 miles, cropland (49%) and grassland (20%) within 10 miles, and cropland (40%) and grassland (24%) within 50 miles.

2 miles
59 ft
10 miles
167 ft
50 miles
735 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
Winter weather nearby: Donna 3.7 mi · Mercedes 5.0 mi · Alamo 8.1 mi · San Juan 11 mi · Pharr 12 mi · Ciudad Río Bravo 14 mi · Edinburg 14 mi · McAllen 15 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 Weslaco (26.1595°, -97.9908°, elevation 79 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.