East Saint Louis weather in April

In April, East Saint Louis sees average daytime highs of 67°F and overnight lows near 48°F, with 4.7 in of precipitation across 11.3 wet days and about 13 hours of daylight. It is the 7th-warmest and 2nd-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 30% of the time in April, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of April to 13 h 36 min by month's end. Set against the rest of the year, April is East Saint Louis's 7th-clearest and 1st-windiest month. For the whole year in context, see East Saint Louis's year-round climate.

Daytime high
67°
7th warmest
Overnight low
48°
6th coldest
Precipitation
4.7 in
11.3 wet days
Daylight
13 hours
5:31 AM – 6:31 PM
Cloud cover
60%
7th clearest
Wind
8 mph
1st windiest
Solar energy
5.19 kWh/m²
Travel score
5.9
out of 10

East Saint Louis is city in St. Clair County, Illinois, United States.

Density
730/km²
people per km²
Founded
1820

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

Temperature in April

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 April day in East Saint Louis reaches about 67°F in the afternoon and slips back to 48°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 80°F. Set against its neighbours, April runs about 11°F warmer than March and about 9°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
16243
26243
36344
46344
56444
66445
76445
86545
96546
106646
116646
126647
136747
146747
156748
166748
176848
186849
196849
206849
216849
226950
236950
246950
256951
266951
277051
287052
297052
307153

How April really feels in East Saint Louis

Once humidity and wind are folded in, April 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

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

East Saint Louis weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan40° / 25°2.98.32.89.60.0
Feb45° / 28°2.57.52.710.51.0
Mar56° / 37°3.810.71.211.73.7
Apr67° / 48°4.711.30.2135.9
May76° / 58°5.013.3014.16.3
Jun84° / 67°4.111014.65.3
Jul88° / 71°3.410014.44.6
Aug86° / 68°2.99.3013.55.1
Sep80° / 60°3.27.7012.37.0
Oct68° / 48°3.58.20116.7
Nov55° / 38°3.78.60.79.93.6
Dec44° / 29°2.78.32.29.40.8

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 14% of April, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24456
34456
44555
54654
64654
74654
84753
94753
104654
114753
124654
134654
144654
154555
164654
174555
184456
194456
204456
214456
224456
234258
244258
254258
264258
274258
284357
294258
304159

Chance of precipitation in April

Any precipitationSnow

East Saint Louis gets around 4.7 in of rain and snow over 11.3 wet days in April. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 38% and peaks near 45% on the wettest days, and about 0 day brings snow. The odds climb toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)Snow chance (%)
1362
2352
3351
4351
5351
6351
7351
8351
9351
10351
11351
12351
13351
14361
15361
16370
17380
18380
19390
20400
21400
22410
23420
24430
25430
26440
27450
28450
29450
30450

Humidity in April

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, April lands in the dry band about 83% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
190730
290730
390730
489740
589740
688840
788840
887940
986950
1086950
11851050
12851050
13841150
14841150
15831250
16831250
17831250
18821350
19821350
20821350
21811450
22801460
23801460
24791560
25791560
26781660
27761671
28751771
29741781
30711892

Wind in April

Winds average 8 mph in April, the windiest month of the year.

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

051015151015202530
Wind speed (mph)Feels
18light breeze
28light breeze
38light breeze
48light breeze
58light breeze
68light breeze
78light breeze
88light breeze
98light breeze
108light breeze
118light breeze
128light breeze
138light breeze
148light breeze
158light breeze
168light breeze
178light breeze
188light 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

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 72 minutes over April. Sunrise moves from 5:54 AM to 5:11 AM, and sunset from 6:17 PM to 6:45 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:546:17
212.45:526:17
312.55:516:18
412.55:496:19
512.55:486:20
612.65:466:21
712.65:446:22
812.75:436:23
912.75:416:24
1012.85:406:25
1112.85:386:26
1212.85:376:27
1312.95:356:28
1412.95:346:29
1513.05:326:30
1613.05:316:31
1713.05:296:32
1813.15:286:33
1913.15:266:34
2013.25:256:35
2113.25:236:36
2213.25:226:37
2313.35:216:38
2413.35:196:39
2513.45:186:40
2613.45:176:41
2713.45:156:42
2813.55:146:43
2913.55:136:44
3013.65:116:45

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.19 kWh/m².

For context, solar energy here swings from a low near 1.92 kWh/m² to a high of 6.45 kWh/m² in June across the year — April's 5.19 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.9Bright
54.9Bright
65.0Bright
75.0Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in April

Is April a good time to visit East Saint Louis?

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

5.9
Sightseeing
4th-best month of the year
2.7
Beach & pool
7th-best month of the year

April is a reasonable time to visit East Saint Louis for sightseeing.

What to pack for East Saint Louis in April

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

In April, East Saint Louis sees daytime highs around 67°F and nights near 48°F. Worth packing: rain gear and sun protection. About 11 days see rain.

rain gearsun protection

UV index in East Saint Louis in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in East Saint Louis peaks around June 21 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 23 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 21UV 9Dec 23UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr7High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in East Saint Louis in April

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in East Saint Louis is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1418 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb12Good
Mar12Good
Apr11Good
May14Moderate
Jun16Moderate
Jul18Moderate
Aug15Moderate
Sep12Moderate
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is East Saint Louis?

East Saint Louis sits at 38.6°N, 90.2°W, 417 ft above sea level, in United States. The nearest listed city is St. Louis, 2.5 mi away.

Topography around East Saint Louis

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

Within 2 miles, the terrain around East Saint Louis has only modest variations in elevation — a maximum elevation change of 121 ft around an average of 417 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 397 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 981 ft.

The land around East Saint Louis is covered by trees (33%), artificial surfaces (33%) and grassland (20%) within 2 miles, trees (36%) and artificial surfaces (26%) within 10 miles, and trees (43%) and cropland (42%) within 50 miles.

2 miles
121 ft
10 miles
397 ft
50 miles
981 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: St. Louis 2.5 mi · Granite City 5.6 mi · University City 8.7 mi · Fairview Heights 8.7 mi · Lemay 9.3 mi · Clayton 9.3 mi · Collinsville 9.3 mi · Affton 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 East Saint Louis (38.6245°, -90.1509°, elevation 417 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).