Harker Heights weather in May

In May, Harker Heights sees average daytime highs of 84°F and overnight lows near 66°F, with 4.5 in of rain across 10.7 wet days and about 13.6 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 82°F in the first days to 88°F by the end. The sky is clear or mostly clear about 34% of the time in May, and the air most often feels muggy.

Daylight stretches from about 13 h 12 min at the start of May to 13 h 54 min by month's end. Set against the rest of the year, May is Harker Heights's 12th-clearest and 3rd-windiest month. For the whole year in context, see Harker Heights's year-round climate.

Daytime high
84°
5th warmest
Overnight low
66°
8th coldest
Rainfall
4.5 in
10.7 wet days
Daylight
13 h 36 min
5:40 AM – 7:14 PM
Cloud cover
56%
12th clearest
Wind
9 mph
3rd windiest
Solar energy
5.77 kWh/m²
Travel score
5.5
out of 10

Harker Heights is city in Bell County, Texas, United States.

Density
739/km²
people per km²
Founded
1957

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 82°F in the first days to 88°F by the end.

A typical May day in Harker Heights reaches about 84°F in the afternoon and slips back to 66°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 76°F and 92°F. Set against its neighbours, May runs about 7°F warmer than April and about 6°F cooler than June.

60°80°100°151015202531
Avg high (°F)Avg low (°F)
18161
28162
38262
48262
58263
68263
78263
88264
98364
108364
118364
128365
138365
148465
158465
168466
178466
188566
198567
208567
218567
228667
238668
248668
258668
268769
278769
288769
298869
308869
318870

How May really feels in Harker Heights

Once humidity and wind are folded in, May averages 4 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
4
heat index over the day's high
Days feeling ≤ 32°F
0
wind chill below the day's low

The story in May is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Harker Heights 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 daysDaylight (hours)Travel score
Jan60° / 40°2.36.410.25.2
Feb64° / 44°2.4710.96.1
Mar70° / 51°3.18.711.86.8
Apr78° / 58°2.98.112.77.2
May84° / 66°4.510.713.65.5
Jun91° / 73°2.87.9143.9
Jul95° / 75°1.55.413.82.9
Aug95° / 75°2.15.813.12.9
Sep88° / 69°2.76.312.24.9
Oct79° / 59°3.87.411.27.2
Nov69° / 49°2.66.610.47.0
Dec61° / 42°2.96.7105.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 34% of the time in May, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15347
25248
35149
45050
55050
64951
74852
84951
94852
104852
114951
125050
135050
145050
155248
165248
175248
185248
195248
205248
215347
225347
235347
245347
255347
265347
275446
285446
295545
305644
315644

Chance of precipitation in May

Any precipitation

Harker Heights gets around 4.5 in of rain over 10.7 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 34% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
333
433
534
634
734
834
934
1033
1133
1233
1333
1433
1533
1633
1733
1833
1934
2034
2134
2235
2335
2435
2535
2635
2735
2835
2934
3034
3133

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 40% of days. Sticky, muggy-or-worse air turns up on roughly 50% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1331524243
2321524254
3301524274
4291424285
5271424305
6261424316
7241324326
8231324336
9211324347
10201324357
11191325368
12181325378
13171225379
14161225389
15151225399
161412263910
171311264010
181211254111
191110254211
201010254312
2199254413
2289254513
2378244714
2468244815
2557244916
2647234916
2737225117
2836225118
2926215219
3026205220
3126195221

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
129light breeze
139light breeze
149light breeze
159light breeze
169light 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 12 min at the start of May to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over May. Sunrise moves from 5:52 AM to 5:32 AM, and sunset from 7:04 PM to 7:24 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.25:527:04
213.25:517:04
313.35:507:05
413.35:497:06
513.35:487:06
613.35:477:07
713.45:477:08
813.45:467:09
913.45:457:09
1013.45:447:10
1113.55:437:11
1213.55:437:11
1313.55:427:12
1413.55:417:13
1513.55:407:13
1613.65:407:14
1713.65:397:15
1813.65:387:15
1913.65:387:16
2013.75:377:17
2113.75:377:17
2213.75:367:18
2313.75:367:19
2413.75:357:19
2513.85:357:20
2613.85:347:21
2713.85:347:21
2813.85:347:22
2913.85:337:22
3013.85:337:23
3113.95:327:24

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.77 kWh/m².

For context, solar energy here swings from a low near 2.71 kWh/m² to a high of 6.83 kWh/m² in July across the year — May's 5.77 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.8Bright
125.8Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.8Bright
185.8Bright
195.8Bright
205.9Bright
215.9Bright
225.9Bright
235.9Bright
245.9Bright
256.0Bright
266.0Bright
276.0Intense
286.0Intense
296.1Intense
306.1Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Harker Heights?

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

5.5
Sightseeing
7th-best month of the year
6.8
Beach & pool
3rd-best month of the year

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

What to pack for Harker Heights in May

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

In May, Harker Heights sees daytime highs around 84°F and nights near 66°F. Pack light clothes. Worth having: rain gear and sun protection. About 11 days see rain.

light clothesrain gearsun protection

UV index in Harker Heights 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 Harker Heights peaks around July 17 at about 10 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateJul 17UV 10Dec 20UV 4
UV index (midday)Level
Jan4Moderate
Feb6High
Mar6High
Apr9Very high
May10Extreme
Jun10Extreme
Jul10Extreme
Aug10Extreme
Sep8Very high
Oct6High
Nov5Moderate
Dec3Moderate

Air quality in Harker Heights 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 Harker Heights is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.7× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1417 µg/m³Dec 127 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb7Good
Mar9Good
Apr10Good
May14Moderate
Jun15Moderate
Jul18Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Harker Heights?

Harker Heights sits at 31.1°N, 97.7°W, 764 ft above sea level, in United States. The nearest listed city is Killeen, 4.3 mi away.

Topography around Harker Heights

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

Within 2 miles, the terrain around Harker Heights has only modest variations in elevation — a maximum elevation change of 256 ft around an average of 791 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 633 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 1,421 ft.

The land around Harker Heights is covered by grassland (33%), artificial surfaces (33%) and trees (31%) within 2 miles, trees (43%) and grassland (37%) within 10 miles, and grassland (49%) and trees (33%) within 50 miles.

2 miles
256 ft
10 miles
633 ft
50 miles
1,421 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Killeen 4.3 mi · Fort Cavazos 7.5 mi · Belton 12 mi · Copperas Cove 15 mi · Temple 19 mi · Gatesville 25 mi · Georgetown 31 mi · Leander 37 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 Harker Heights (31.0835°, -97.6597°, elevation 764 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).