McKinney weather in March

In March, McKinney sees average daytime highs of 66°F and overnight lows near 47°F, with 4.1 in of precipitation across 9.5 wet days and about 11.7 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 63°F in the first days to 70°F by the end. The sky is clear or mostly clear about 38% of the time in March, and the air most often feels dry.

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

Daytime high
66°
8th warmest
Overnight low
47°
5th coldest
Precipitation
4.1 in
9.5 wet days
Daylight
11 h 42 min
6:44 AM – 6:28 PM
Cloud cover
55%
11th clearest
Wind
10 mph
2nd windiest
Solar energy
4.4 kWh/m²
Travel score
6.2
out of 10

McKinney is city in Collin County, Texas, United States.

Density
988/km²
people per km²
Founded
1848

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 63°F in the first days to 70°F by the end.

A typical March day in McKinney reaches about 66°F in the afternoon and slips back to 47°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 53°F and 78°F. Set against its neighbours, March runs about 7°F warmer than February and about 8°F cooler than April.

20°40°60°80°151015202531
Avg high (°F)Avg low (°F)
16243
26243
36343
46344
56344
66444
76445
86445
96546
106546
116546
126547
136647
146647
156648
166748
176748
186749
196749
206849
216849
226850
236950
246950
256950
266950
276951
287051
297051
307051
317051

How March really feels in McKinney

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.

McKinney weather by month

How March compares with the rest of the year at a glance. March is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan55° / 37°2.86.80.510.13.8
Feb59° / 40°2.97.50.610.84.8
Mar66° / 47°4.19.50.311.76.2
Apr74° / 55°4.69.2012.87.0
May81° / 64°5.711.5013.76.1
Jun89° / 72°3.69.1014.24.4
Jul93° / 75°2.06.20143.4
Aug93° / 75°2.05.8013.23.4
Sep87° / 68°3.16.8012.25.4
Oct76° / 57°4.17.9011.27.4
Nov65° / 46°3.77.2010.36.4
Dec56° / 39°3.87.20.39.84.2

Cloud cover in March

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in March.

Beyond those clear spells, partly cloudy skies cover about 11% of March, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
34951
44951
54951
64951
74951
84852
94951
104951
114852
124852
134951
144951
154951
164951
174951
185050
195050
205050
215050
225050
235050
245050
255050
265050
275050
285050
295050
305050
315050

Chance of precipitation in March

Any precipitationSnow

McKinney gets around 4.1 in of rain and snow over 9.5 wet days in March. 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 32% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
1292
2292
3292
4292
5292
6292
7292
8292
9301
10301
11301
12301
13301
14311
15311
16311
17311
18311
19311
20311
21311
22311
23311
24321
25321
26321
27320
28320
29320
30320
31310

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 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
189830
289830
388840
487940
587940
6861040
7851050
8841150
9831250
10831250
11811360
12811360
13801460
14791461
15771571
16771571
17761671
18761671
19751681
20751681
21731782
22731782
23721792
24721693
25721693
26721693
27711694
28721594
297115104
307015105
317015105

Wind in March

Winds average 10 mph in March.

Across March, daily wind ranges from about 10 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light breeze
210light breeze
310light breeze
410light breeze
510light breeze
610light breeze
710light breeze
810light breeze
910light breeze
1010light breeze
1110light breeze
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in March

DaylightNight

Daylight runs from about 11 h 12 min at the start of March to 12 h 18 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over March. Sunrise moves from 7:03 AM to 6:23 AM, and sunset from 6:17 PM to 6:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.27:036:17
211.37:026:17
311.37:006:18
411.36:596:19
511.46:586:20
611.46:576:21
711.46:566:21
811.56:546:22
911.56:536:23
1011.56:526:24
1111.66:506:25
1211.66:496:25
1311.66:486:26
1411.76:466:27
1511.76:456:28
1611.76:446:28
1711.86:426:29
1811.86:416:30
1911.96:406:31
2011.96:386:31
2111.96:376:32
2212.06:366:33
2312.06:346:34
2412.06:336:34
2512.16:326:35
2612.16:306:36
2712.16:296:37
2812.26:276:37
2912.26:266:38
3012.26:256:39
3112.36:236:40

Solar energy in March

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in March, about 4.4 kWh/m².

For context, solar energy here swings from a low near 2.52 kWh/m² to a high of 6.77 kWh/m² in July across the year — March's 4.4 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
14.0Moderate
24.0Moderate
34.0Bright
44.0Bright
54.1Bright
64.1Bright
74.1Bright
84.2Bright
94.2Bright
104.2Bright
114.2Bright
124.3Bright
134.3Bright
144.3Bright
154.3Bright
164.4Bright
174.4Bright
184.4Bright
194.5Bright
204.5Bright
214.5Bright
224.6Bright
234.6Bright
244.6Bright
254.7Bright
264.7Bright
274.7Bright
284.8Bright
294.8Bright
304.9Bright
314.9Bright
Planning a trip in March

Is March a good time to visit McKinney?

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

6.2
Sightseeing
4th-best month of the year
2.8
Beach & pool
8th-best month of the year

March is a reasonable time to visit McKinney for sightseeing.

What to pack for McKinney in March

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

In March, McKinney sees daytime highs around 66°F and nights near 47°F. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in McKinney 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 McKinney peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJul 17UV 10Dec 21UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr9Very high
May9Very high
Jun10Very high
Jul10Extreme
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in McKinney 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 McKinney is worst in July — around 19 µg/m³ PM2.5 (moderate), about 2.6× the cleanest month (October, 8 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1519 µg/m³Oct 248 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb8Good
Mar10Good
Apr11Good
May14Moderate
Jun16Moderate
Jul19Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec8Good
Location & terrain

Where is McKinney?

McKinney sits at 33.2°N, 96.6°W, 630 ft above sea level, in United States. The nearest listed city is Allen, 7.5 mi away.

Topography around McKinney

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

Within 2 miles, the terrain around McKinney has only modest variations in elevation — a maximum elevation change of 164 ft around an average of 594 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 318 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 722 ft.

The land around McKinney is covered by artificial surfaces (38%), trees (27%) and grassland (24%) within 2 miles, grassland (37%), trees (24%) and artificial surfaces (22%) within 10 miles, and grassland (47%) and trees (26%) within 50 miles.

2 miles
164 ft
10 miles
318 ft
50 miles
722 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
March weather nearby: Allen 7.5 mi · Prosper 11 mi · Frisco 12 mi · Murphy 12 mi · Celina 13 mi · Plano 13 mi · Wylie 14 mi · The Trails of Frisco 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 McKinney (33.1976°, -96.6153°, elevation 630 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).