Rowlett weather in May

In May, Rowlett sees average daytime highs of 82°F and overnight lows near 65°F, with 5.4 in of rain across 11.3 wet days and about 13.7 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 78°F in the first days to 85°F by the end. The sky is clear or mostly clear about 35% of the time in May, and the air most often feels muggy.

Daylight stretches from about 13 h 18 min at the start of May to 14 hours by month's end. Set against the rest of the year, May is Rowlett's 12th-clearest and 3rd-windiest month. For the whole year in context, see Rowlett's year-round climate.

Daytime high
82°
5th warmest
Overnight low
65°
8th coldest
Rainfall
5.4 in
11.3 wet days
Daylight
13 h 42 min
5:32 AM – 7:13 PM
Cloud cover
56%
12th clearest
Wind
9 mph
3rd windiest
Solar energy
5.7 kWh/m²
Travel score
6.0
out of 10

Rowlett is city in Dallas and Rockwall counties in Texas, United States.

Density
1,110/km²
people per km²
Founded
1952

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 78°F in the first days to 85°F by the end.

A typical May day in Rowlett reaches about 82°F in the afternoon and slips back to 65°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 74°F and 89°F. Set against its neighbours, May runs about 7°F warmer than April and about 7°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17860
27860
37860
47961
57961
67961
77962
88062
98062
108063
118063
128163
138164
148164
158164
168265
178265
188265
198265
208366
218366
228367
238367
248467
258467
268468
278568
288568
298569
308569
318669

How May really feels in Rowlett

Once humidity and wind are folded in, May 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

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

Rowlett weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan56° / 37°2.87.20.410.14.0
Feb60° / 41°3.07.80.610.85.0
Mar67° / 48°4.19.50.211.76.3
Apr74° / 56°4.59.1012.87.1
May82° / 65°5.411.3013.76.0
Jun89° / 72°3.48.9014.14.3
Jul93° / 76°1.96.2013.93.3
Aug93° / 75°2.15.6013.23.4
Sep87° / 69°2.76.6012.25.3
Oct77° / 57°4.07.9011.27.4
Nov66° / 47°3.77.30.110.36.5
Dec57° / 39°3.87.50.29.94.4

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 50%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15248
25149
35050
45050
54951
64951
74852
84852
94852
104852
114852
124852
134852
144951
154951
164852
174951
185050
195050
204951
214951
225050
235149
245149
255149
265248
275248
285347
295446
305446
315545

Chance of precipitation in May

Any precipitation

Rowlett gets around 5.4 in of rain over 11.3 wet days in May, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
236
336
436
536
636
736
836
936
1036
1135
1235
1334
1434
1534
1634
1734
1834
1934
2034
2135
2235
2335
2436
2536
2636
2736
2836
2936
3036
3136

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the muggy band about 38% of days. Sticky, muggy-or-worse air turns up on roughly 47% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1371921202
2351921223
3341921233
4321822244
5301722264
6291723274
7281623285
8261524305
9251524315
10241424326
11231425326
12221425336
13211325347
14201325357
15191325368
16181325378
17171225388
18151224399
19141224409
201312244210
211112234311
221011234511
23911224612
24711224812
25610214913
26510215014
2749205215
2839205216
2938195317
3027195319
3127185320

Wind in May

Winds average 9 mph in May.

Across May, daily wind ranges from about 9 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
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 May

DaylightNight

Daylight runs from about 13 h 18 min at the start of May to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:45 AM to 5:24 AM, and sunset from 7:02 PM to 7:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:457:02
213.35:447:03
313.35:437:03
413.45:427:04
513.45:417:05
613.45:407:06
713.55:397:06
813.55:387:07
913.55:377:08
1013.55:367:09
1113.65:367:09
1213.65:357:10
1313.65:347:11
1413.65:337:12
1513.75:337:12
1613.75:327:13
1713.75:317:14
1813.75:307:15
1913.85:307:15
2013.85:297:16
2113.85:297:17
2213.85:287:17
2313.85:277:18
2413.95:277:19
2513.95:267:19
2613.95:267:20
2713.95:267:21
2813.95:257:21
2914.05:257:22
3014.05:247:23
3114.05:247:23

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.7 kWh/m².

For context, solar energy here swings from a low near 2.53 kWh/m² to a high of 6.77 kWh/m² in July across the year — May's 5.7 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.6Bright
45.6Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.9Bright
255.9Bright
265.9Bright
275.9Bright
286.0Bright
296.0Bright
306.0Intense
316.0Intense
Planning a trip in May

Hazard calendar for Rowlett

In seasonPeak

None of Rowlett's seasonal hazards are active in May. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Rowlett sits in the Atlantic hurricane belt; the season peaks August–October.

Atlantic hurricane
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Rowlett?

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

6.0
Sightseeing
5th-best month of the year
6.6
Beach & pool
5th-best month of the year

May is a reasonable time to visit Rowlett for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Rowlett in May

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

In May, Rowlett sees daytime highs around 82°F and nights near 65°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Rowlett in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rowlett peaks around June 23 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 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 highHighModerateJun 23UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr10Very high
May10Very high
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Rowlett in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Rowlett 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 Rowlett?

Rowlett sits at 32.9°N, 96.6°W, 505 ft above sea level, in United States. The nearest listed city is Garland, 4.3 mi away.

Topography around Rowlett

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

Within 2 miles, the terrain around Rowlett has only modest variations in elevation — a maximum elevation change of 115 ft around an average of 476 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 617 ft.

The land around Rowlett is covered by artificial surfaces (38%), trees (26%) and grassland (21%) within 2 miles, artificial surfaces (37%), grassland (27%) and trees (22%) within 10 miles, and grassland (48%) and trees (25%) within 50 miles.

2 miles
115 ft
10 miles
318 ft
50 miles
617 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Garland 4.3 mi · Sachse 5.6 mi · Rockwall 6.2 mi · Wylie 8.1 mi · Murphy 8.1 mi · Mesquite 9.3 mi · Richardson 9.9 mi · Plano 11 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 Rowlett (32.9029°, -96.5639°, elevation 505 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). 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).