Greenville weather in May

In May, Greenville sees average daytime highs of 81°F and overnight lows near 64°F, with 5.9 in of rain across 11.6 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 33% 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 Greenville's 12th-clearest and 4th-windiest month. For the whole year in context, see Greenville's year-round climate.

Daytime high
81°
5th warmest
Overnight low
64°
8th coldest
Rainfall
5.9 in
11.6 wet days
Daylight
13 h 42 min
5:30 AM – 7:12 PM
Cloud cover
57%
12th clearest
Wind
9 mph
4th windiest
Solar energy
5.64 kWh/m²
Travel score
6.1
out of 10

Greenville is city in Hunt County, Texas, United States.

Density
304/km²
people per km²
Founded
1846

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 Greenville reaches about 81°F in the afternoon and slips back to 64°F overnight — a 17°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 88°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)
17759
27859
37860
47860
57860
67861
77961
87961
97962
108062
118062
128063
138063
148163
158164
168164
178164
188265
198265
208265
218266
228366
238366
248367
258367
268467
278467
288468
298568
308568
318569

How May really feels in Greenville

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.

Greenville 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
Jan55° / 37°3.17.40.510.13.8
Feb59° / 40°3.380.610.84.7
Mar66° / 48°4.49.70.311.76.2
Apr74° / 55°5.19.7012.86.9
May81° / 64°5.911.6013.76.1
Jun88° / 72°3.79.4014.14.5
Jul93° / 75°2.26.70143.5
Aug93° / 75°2.05.9013.23.5
Sep87° / 68°3.06.4012.25.5
Oct76° / 57°4.17.9011.27.4
Nov65° / 47°3.67.60.110.36.4
Dec56° / 39°4.17.90.29.94.2

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of May, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15149
25050
35050
44951
54951
64852
74753
84753
94753
104852
114753
124753
134753
144753
154753
164753
174753
184753
194753
204852
214852
224753
234852
244951
254951
265050
274951
285050
295149
305248
315347

Chance of precipitation in May

Any precipitation

Greenville gets around 5.9 in of rain over 11.6 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 36% and peaks near 38% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
137
238
338
438
538
638
737
837
937
1036
1136
1236
1335
1435
1535
1635
1735
1835
1935
2036
2136
2236
2337
2437
2537
2637
2737
2837
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 36% of days. Sticky, muggy-or-worse air turns up on roughly 45% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1381823182
2371823193
3351724213
4331724224
5321724234
6311624244
7291625265
8281625275
9261525286
10251525296
11241426306
12231426316
13221426327
14211326337
15201326347
16181326358
17171325378
18161225388
19151224409
20131224429
211212234310
221011234511
23911224611
24811224712
25710214913
26510215014
27510205015
2849195117
2939195118
3038185219
3128175221

Wind in May

Winds average 9 mph in May.

Across May, 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
159light breeze
169light breeze
179light breeze
189light breeze
198light breeze
208light breeze
218light breeze
228light breeze
238light breeze
248light breeze
258light breeze
268light breeze
278light breeze
288light breeze
298light breeze
308light breeze
318light 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 5:43 AM to 5:22 AM, and sunset from 7:01 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:437:01
213.35:427:01
313.45:417:02
413.45:407:03
513.45:397:04
613.45:387:04
713.55:377:05
813.55:367:06
913.55:357:07
1013.65:347:07
1113.65:337:08
1213.65:337:09
1313.65:327:10
1413.75:317:10
1513.75:307:11
1613.75:307:12
1713.75:297:13
1813.85:287:13
1913.85:287:14
2013.85:277:15
2113.85:267:15
2213.85:267:16
2313.95:257:17
2413.95:257:18
2513.95:247:18
2613.95:247:19
2713.95:237:20
2814.05:237:20
2914.05:227:21
3014.05:227:21
3114.05:227:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.64 kWh/m².

For context, solar energy here swings from a low near 2.47 kWh/m² to a high of 6.7 kWh/m² in July across the year — May's 5.64 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.8Bright
215.8Bright
225.8Bright
235.8Bright
245.8Bright
255.8Bright
265.8Bright
275.9Bright
285.9Bright
295.9Bright
306.0Bright
316.0Bright
Planning a trip in May

Is May a good time to visit Greenville?

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

6.1
Sightseeing
5th-best month of the year
6.5
Beach & pool
5th-best month of the year

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

What to pack for Greenville in May

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

In May, Greenville sees daytime highs around 81°F and nights near 64°F. Pack light clothes. Worth having: rain gear and sun protection. About 12 days see rain.

light clothesrain gearsun protection

UV index in Greenville in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Greenville peaks around June 21 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 — in 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highVery highHighModerateJun 21UV 10Dec 22UV 3
UV index (midday)Level
Jan3Moderate
Feb5Moderate
Mar6High
Apr9Very high
May9Very high
Jun10Extreme
Jul10Very high
Aug10Very high
Sep8Very high
Oct6High
Nov4Moderate
Dec3Moderate

Air quality in Greenville 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 Greenville is worst in July — around 20 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (January, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1519 µg/m³Jan 17 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb8Good
Mar10Good
Apr10Good
May14Moderate
Jun16Moderate
Jul20Moderate
Aug15Moderate
Sep11Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Greenville?

Greenville sits at 33.1°N, 96.1°W, 541 ft above sea level, in United States. The nearest listed city is Rockwall, 25 mi away.

Topography around Greenville

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

Within 2 miles, the terrain around Greenville has only modest variations in elevation — a maximum elevation change of 102 ft around an average of 545 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 269 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 584 ft.

The land around Greenville is covered by trees (40%), grassland (30%) and artificial surfaces (21%) within 2 miles, grassland (58%) and trees (30%) within 10 miles, and grassland (51%) and trees (28%) within 50 miles.

2 miles
102 ft
10 miles
269 ft
50 miles
584 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Rockwall 25 mi · Wylie 26 mi · Terrell 29 mi · McKinney 29 mi · Sulphur Springs 29 mi · Sachse 30 mi · Murphy 30 mi · Rowlett 31 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 Greenville (33.1384°, -96.1108°, elevation 541 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).