Mercedes weather in March

In March, Mercedes sees average daytime highs of 81°F and overnight lows near 62°F, with 1.5 in of rain across 5.5 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 8th-wettest month of the year here.

Highs climb over the month, from about 79°F in the first days to 84°F by the end. The sky is clear or mostly clear about 37% of the time in March, and the air most often feels muggy.

Daylight stretches from about 11 h 24 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Mercedes's 9th-clearest and 4th-windiest month. For the whole year in context, see Mercedes's year-round climate.

Daytime high
81°
8th warmest
Overnight low
62°
5th coldest
Rainfall
1.5 in
5.5 wet days
Daylight
11 h 48 min
6:47 AM – 6:36 PM
Cloud cover
54%
9th clearest
Wind
11 mph
4th windiest
Solar energy
4.76 kWh/m²
Travel score
7.0
out of 10

Mercedes is city in Texas, USA.

Density
559/km²
people per km²
Founded
1907

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in March

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 79°F in the first days to 84°F by the end.

A typical March day in Mercedes reaches about 81°F in the afternoon and slips back to 62°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 70°F and 90°F. Set against its neighbours, March runs about 5°F warmer than February and about 6°F cooler than April.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17859
27959
37959
47959
57960
67960
77960
87960
98060
108061
118061
128061
138061
148062
158162
168162
178162
188163
198263
208263
218263
228264
238264
248364
258364
268364
278365
288365
298465
308465
318465

How March really feels in Mercedes

Once humidity and wind are folded in, March 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

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

Mercedes weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 8th-wettest month here — the current month is highlighted below.

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 March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 15% of March, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25248
35149
45149
55050
65050
74951
84951
94951
104951
114951
125050
135149
145248
155347
165347
175446
185446
195545
205545
215545
225446
235545
245446
255446
265248
275248
285149
295149
305050
315050

Chance of precipitation in March

Any precipitation

Mercedes gets around 1.5 in of rain over 5.5 wet days in March. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 18% and peaks near 21% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
116
216
316
416
517
617
718
819
919
1020
1120
1221
1321
1420
1520
1620
1719
1819
1919
2018
2118
2217
2317
2416
2516
2616
2716
2817
2917
3017
3118

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the muggy band about 32% of days. Sticky, muggy-or-worse air turns up on roughly 36% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1421319261
2421318261
3421318261
4421317261
5411417271
6401417271
7391418272
8381418282
9371518282
10361519292
11351519292
12341520302
13331520302
14321520302
15311521313
16301521313
17291422323
18281422333
19271422344
20261422344
21251322355
22241322365
23231322366
24231322366
25221322377
26221221378
27211221379
28211221379
292012203810
302011203811
312011193811

Wind in March

Winds average 11 mph in March.

Across March, daily wind ranges from about 11 mph on the calmest days to 12 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
111light breeze
211light breeze
311light breeze
411light breeze
511light breeze
611light breeze
711light breeze
811light breeze
911light breeze
1011light breeze
1111light breeze
1211light breeze
1311light breeze
1411light breeze
1511light breeze
1611light breeze
1711light breeze
1811light breeze
1911light breeze
2011light breeze
2111light breeze
2211light breeze
2311light breeze
2411light breeze
2511light breeze
2611light breeze
2711light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 24 min at the start of March to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over March. Sunrise moves from 7:02 AM to 6:30 AM, and sunset from 6:28 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.47:026:28
211.47:016:28
311.57:006:29
411.56:596:29
511.56:586:30
611.56:576:30
711.66:566:31
811.66:556:31
911.66:546:32
1011.76:536:33
1111.76:526:33
1211.76:516:34
1311.76:506:34
1411.86:496:35
1511.86:486:35
1611.86:476:36
1711.86:466:36
1811.96:456:37
1911.96:446:37
2011.96:436:38
2111.96:426:38
2212.06:406:39
2312.06:396:39
2412.06:386:39
2512.06:376:40
2612.16:366:40
2712.16:356:41
2812.16:346:41
2912.26:336:42
3012.26:326:42
3112.26:306:43

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.76 kWh/m².

For context, solar energy here swings from a low near 2.99 kWh/m² to a high of 6.73 kWh/m² in July across the year — March's 4.76 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
14.3Bright
24.3Bright
34.4Bright
44.4Bright
54.4Bright
64.4Bright
74.5Bright
84.5Bright
94.5Bright
104.5Bright
114.6Bright
124.6Bright
134.6Bright
144.7Bright
154.7Bright
164.7Bright
174.8Bright
184.8Bright
194.9Bright
204.9Bright
214.9Bright
225.0Bright
235.0Bright
245.0Bright
255.1Bright
265.1Bright
275.1Bright
285.2Bright
295.2Bright
305.2Bright
315.3Bright
Planning a trip in March

Is March a good time to visit Mercedes?

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

7.0
Sightseeing
5th-best month of the year
7.4
Beach & pool
2nd-best month of the year

March is one of the better times to visit Mercedes for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Mercedes in March

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

In March, Mercedes sees daytime highs around 81°F and nights near 62°F. Pack light clothes. Worth having: sun protection. About 6 days see rain.

light clothessun protection

UV index in Mercedes in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mercedes 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 Mercedes in March

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mercedes 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 Mercedes?

Mercedes sits at 26.1°N, 97.9°W, 69 ft above sea level, in United States. The nearest listed city is Weslaco, 5.0 mi away.

Topography around Mercedes

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

Within 2 miles, the terrain around Mercedes has only modest variations in elevation — a maximum elevation change of 39 ft around an average of 66 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 174 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 617 ft.

The land around Mercedes is covered by grassland (31%), cropland (26%) and trees (20%) within 2 miles, cropland (52%) and grassland (20%) within 10 miles, and cropland (40%) and grassland (24%) within 50 miles.

2 miles
39 ft
10 miles
174 ft
50 miles
617 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetland
March weather nearby: Weslaco 5.0 mi · Donna 8.7 mi · Alamo 13 mi · Harlingen 14 mi · San Juan 16 mi · Ciudad Río Bravo 16 mi · Pharr 17 mi · San Benito 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 Mercedes (26.1498°, -97.9136°, elevation 69 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).