Maryland Heights weather in May

In May, Maryland Heights sees average daytime highs of 75°F and overnight lows near 58°F, with 4.9 in of rain across 13.4 wet days and about 14.1 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs climb over the month, from about 71°F in the first days to 79°F by the end. The sky is clear or mostly clear about 28% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 36 min at the start of May to 14 h 30 min by month's end. Set against the rest of the year, May is Maryland Heights's 8th-clearest and 8th-windiest month. For the whole year in context, see Maryland Heights's year-round climate.

Daytime high
75°
5th warmest
Overnight low
58°
8th coldest
Rainfall
4.9 in
13.4 wet days
Daylight
14 h 06 min
4:55 AM – 7:01 PM
Cloud cover
62%
8th clearest
Wind
7 mph
8th windiest
Solar energy
5.79 kWh/m²
Travel score
6.2
out of 10

Maryland Heights is city in Missouri, United States.

Density
453/km²
people per km²

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 71°F in the first days to 79°F by the end.

A typical May day in Maryland Heights reaches about 75°F in the afternoon and slips back to 58°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 63°F and 86°F. Set against its neighbours, May runs about 9°F warmer than April and about 9°F cooler than June.

40°60°80°151015202531
Avg high (°F)Avg low (°F)
17152
27153
37153
47253
57254
67254
77355
87355
97355
107456
117456
127456
137457
147557
157557
167558
177658
187658
197658
207659
217759
227760
237760
247860
257861
267861
277961
287962
297962
308062
318063

How May really feels in Maryland Heights

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.

Maryland 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 daysSnow daysDaylight (hours)Travel score
Jan39° / 24°2.6839.60.0
Feb44° / 28°2.47.82.810.50.8
Mar55° / 37°3.710.81.411.73.5
Apr66° / 47°4.511.40.2135.8
May75° / 58°4.913.4014.16.2
Jun84° / 67°4.011.2014.75.4
Jul87° / 70°3.39.8014.44.7
Aug86° / 68°2.99013.55.3
Sep79° / 60°3.27.6012.37.1
Oct67° / 48°3.48.40116.6
Nov54° / 37°3.68.70.89.93.5
Dec43° / 28°2.58.12.29.30.6

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 15% of May, with mostly cloudy or overcast conditions the remaining 57%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14357
24357
34357
44456
54357
64357
74357
84357
94357
104357
114357
124456
134456
144456
154456
164357
174357
184258
194357
204357
214357
224357
234258
244258
254258
264357
274357
284357
294357
304555
314555

Chance of precipitation in May

Any precipitation

Maryland Heights gets around 4.9 in of rain over 13.4 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 43% and peaks near 46% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
146
246
345
445
545
645
745
844
944
1044
1143
1243
1343
1443
1543
1643
1743
1843
1943
2043
2142
2242
2342
2442
2542
2642
2741
2841
2941
3040
3140

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 49% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
17019920
269191020
365201230
464201330
562201440
660201550
759201650
859191660
957191770
1056181880
1154181990
12541719100
13521720110
14531620110
15511520131
16501520141
17501420151
18481421161
19471421171
20461421191
21441421201
22421421211
23411521222
24391521232
25371621242
26351721252
27341721262
28321821263
29311921273
30292021283
31282020283

Wind in May

Winds average 7 mph in May.

Across May, daily wind ranges from about 6 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
18light breeze
28light breeze
37light breeze
47light breeze
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 36 min at the start of May to 14 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 54 minutes over May. Sunrise moves from 5:11 AM to 4:45 AM, and sunset from 6:47 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.65:116:47
213.65:106:48
313.75:096:49
413.75:076:50
513.75:066:51
613.85:056:52
713.85:046:53
813.85:036:54
913.95:026:54
1013.95:016:55
1113.95:006:56
1214.04:596:57
1314.04:586:58
1414.04:576:59
1514.14:567:00
1614.14:557:01
1714.14:547:02
1814.24:537:03
1914.24:527:04
2014.24:527:05
2114.24:517:05
2214.34:507:06
2314.34:497:07
2414.34:497:08
2514.34:487:09
2614.44:477:10
2714.44:477:10
2814.44:467:11
2914.44:467:12
3014.54:457:13
3114.54:457:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 5.79 kWh/m².

For context, solar energy here swings from a low near 1.91 kWh/m² to a high of 6.42 kWh/m² in June across the year — May's 5.79 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.4Bright
55.5Bright
65.5Bright
75.5Bright
85.6Bright
95.6Bright
105.7Bright
115.7Bright
125.7Bright
135.8Bright
145.8Bright
155.8Bright
165.8Bright
175.9Bright
185.9Bright
195.9Bright
205.9Bright
215.9Bright
226.0Bright
236.0Bright
246.0Bright
256.0Bright
266.0Intense
276.0Intense
286.0Intense
296.0Intense
306.0Intense
316.1Intense
Planning a trip in May

Is May a good time to visit Maryland Heights?

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

6.2
Sightseeing
3rd-best month of the year
5.2
Beach & pool
5th-best month of the year

May is a reasonable time to visit Maryland Heights for sightseeing.

What to pack for Maryland Heights in May

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

In May, Maryland Heights sees daytime highs around 75°F and nights near 58°F. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Maryland Heights in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Maryland Heights peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highModerateJun 23UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Maryland 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 Maryland Heights is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1616 µg/m³Oct 237 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb11Good
Mar11Good
Apr10Good
May13Moderate
Jun14Moderate
Jul17Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov7Good
Dec8Good
Location & terrain

Where is Maryland Heights?

Maryland Heights sits at 38.7°N, 90.4°W, 528 ft above sea level, in United States. The nearest listed city is Creve Coeur, 3.7 mi away.

Topography around Maryland Heights

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

Within 2 miles, the terrain around Maryland Heights has only modest variations in elevation — a maximum elevation change of 240 ft around an average of 561 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 482 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 984 ft.

The land around Maryland Heights is covered by artificial surfaces (43%) and trees (41%) within 2 miles, trees (46%) and artificial surfaces (28%) within 10 miles, and trees (49%) and cropland (36%) within 50 miles.

2 miles
240 ft
10 miles
482 ft
50 miles
984 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Creve Coeur 3.7 mi · Overland 3.7 mi · Hazelwood 5.0 mi · Saint Charles 5.6 mi · Ferguson 6.8 mi · Clayton 7.5 mi · University City 7.5 mi · Florissant 8.1 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 Maryland Heights (38.7131°, -90.4298°, elevation 528 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).