Katy weather in March

In March, Katy sees average daytime highs of 73°F and overnight lows near 54°F, with 3.2 in of rain across 9 wet days and about 11.8 hours of daylight. It is the 8th-warmest and 10th-wettest month of the year here.

Highs climb over the month, from about 70°F in the first days to 76°F by the end. The sky is clear or mostly clear about 31% of the time in March, and the air most often feels dry.

Daylight stretches from about 11 h 18 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Katy's 10th-clearest and 2nd-windiest month. For the whole year in context, see Katy's year-round climate.

Daytime high
73°
8th warmest
Overnight low
54°
5th coldest
Rainfall
3.2 in
9 wet days
Daylight
11 h 48 min
6:40 AM – 6:26 PM
Cloud cover
59%
10th clearest
Wind
9 mph
2nd windiest
Solar energy
4.42 kWh/m²
Travel score
6.9
out of 10

Katy is city in Harris, Waller, and Fort Bend counties in Texas, United States.

Density
552/km²
people per km²
Founded
1945

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 70°F in the first days to 76°F by the end.

A typical March day in Katy reaches about 73°F in the afternoon and slips back to 54°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 62°F and 82°F. Set against its neighbours, March runs about 6°F warmer than February and about 6°F cooler than April.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
16951
27051
37051
47051
57051
67052
77152
87152
97153
107153
117253
127253
137254
147254
157354
167355
177355
187355
197455
207456
217456
227456
237556
247556
257557
267557
277557
287657
297657
307657
317658

How March really feels in Katy

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.

Katy weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysDaylight (hours)Travel score
Jan63° / 45°3.79.510.35.7
Feb67° / 48°2.98.610.96.2
Mar73° / 54°3.2911.86.9
Apr79° / 60°3.68.412.76.9
May86° / 68°3.69.713.55.1
Jun91° / 74°4.212.313.93.6
Jul93° / 76°3.111.613.73.0
Aug93° / 75°3.311.513.12.9
Sep89° / 71°3.911.412.24.2
Oct81° / 62°3.9911.36.6
Nov72° / 53°3.78.410.57.0
Dec65° / 46°3.99.310.16.0

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 14% of March, with mostly cloudy or overcast conditions the remaining 55%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14456
24456
34456
44456
54456
64456
74456
84456
94456
104456
114456
124456
134456
144456
154555
164654
174555
184555
194654
204654
214555
224555
234654
244654
254555
264555
274654
284654
294555
304654
314654

Chance of precipitation in March

Any precipitation

Katy gets around 3.2 in of rain over 9 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
831
931
1031
1130
1230
1330
1430
1529
1629
1728
1827
1927
2027
2127
2226
2327
2427
2527
2627
2728
2828
2929
3029
3129

Humidity in March

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, March lands in the dry band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 16% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
162141590
2621315100
3621315100
4611315110
5601316110
6601316110
7581416120
8571417120
9561417130
10541518130
11541518130
12521519140
13511619140
14511619140
15491720140
16481720150
17461821150
18451821150
19441822160
20431822160
21421822170
22421823170
23411823180
24411823190
25401822190
26401722200
27401722211
28391721221
29391721221
30391720231
31391620241

Wind in March

Winds average 9 mph in March.

Across March, daily wind ranges from about 8 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
158light breeze
168light breeze
178light 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 March

DaylightNight

Daylight runs from about 11 h 18 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 54 minutes over March. Sunrise moves from 6:57 AM to 6:21 AM, and sunset from 6:16 PM to 6:35 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.36:576:16
211.46:566:17
311.46:556:18
411.46:546:18
511.46:526:19
611.56:516:20
711.56:506:20
811.56:496:21
911.66:486:22
1011.66:476:22
1111.66:466:23
1211.76:446:24
1311.76:436:24
1411.76:426:25
1511.76:416:26
1611.86:406:26
1711.86:386:27
1811.86:376:28
1911.96:366:28
2011.96:356:29
2111.96:346:29
2212.06:326:30
2312.06:316:31
2412.06:306:31
2512.16:296:32
2612.16:276:32
2712.16:266:33
2812.16:256:34
2912.26:246:34
3012.26:226:35
3112.26:216:35

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.42 kWh/m².

For context, solar energy here swings from a low near 2.61 kWh/m² to a high of 6.28 kWh/m² in July across the year — March's 4.42 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
13.9Moderate
23.9Moderate
33.9Moderate
44.0Moderate
54.0Bright
64.0Bright
74.1Bright
84.1Bright
94.1Bright
104.2Bright
114.2Bright
124.3Bright
134.3Bright
144.3Bright
154.4Bright
164.4Bright
174.5Bright
184.5Bright
194.5Bright
204.6Bright
214.6Bright
224.7Bright
234.7Bright
244.7Bright
254.7Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.9Bright
314.9Bright
Planning a trip in March

Is March a good time to visit Katy?

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

6.9
Sightseeing
2nd-best month of the year
5.2
Beach & pool
8th-best month of the year

March is a reasonable time to visit Katy for sightseeing.

What to pack for Katy in March

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

In March, Katy sees daytime highs around 73°F and nights near 54°F. Worth packing: light clothes and rain gear. About 9 days see rain.

light clothesrain gear

UV index in Katy in March

LowModerateHighVery highExtreme

Clear-sky midday UV in March peaks 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 Katy peaks around August 10 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 11Dec 21UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr10Very high
May10Extreme
Jun10Extreme
Jul11Extreme
Aug11Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec4Moderate

Air quality in Katy 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 Katy is worst in July — around 21 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1520 µg/m³Dec 138 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar11Good
Apr11Good
May15Moderate
Jun17Moderate
Jul21Moderate
Aug15Moderate
Sep12Moderate
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is Katy?

Katy sits at 29.8°N, 95.8°W, 138 ft above sea level, in United States. The nearest listed city is Cinco Ranch, 5.0 mi away.

Topography around Katy

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

Within 2 miles, the terrain around Katy has only modest variations in elevation — a maximum elevation change of 72 ft around an average of 144 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 171 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 492 ft.

The land around Katy is covered by artificial surfaces (35%), trees (31%) and grassland (24%) within 2 miles, grassland (39%) and trees (30%) within 10 miles, and trees (41%) and grassland (37%) within 50 miles.

2 miles
72 ft
10 miles
171 ft
50 miles
492 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Cinco Ranch 5.0 mi · Mission Bend 11 mi · Pecan Grove 12 mi · Alief 15 mi · Cypress 15 mi · New Territory 16 mi · Rosenberg 16 mi · Sugar Land 16 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 Katy (29.7858°, -95.8244°, elevation 138 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).