Bartlett weather in April

In April, Bartlett sees average daytime highs of 58°F and overnight lows near 39°F, with 4.5 in of precipitation across 12 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 2nd-wettest month of the year here.

Highs climb over the month, from about 54°F in the first days to 63°F by the end. The sky is clear or mostly clear about 23% 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 48 min by month's end. Set against the rest of the year, April is Bartlett's 9th-clearest and 1st-windiest month. For the whole year in context, see Bartlett's year-round climate.

Daytime high
58°
7th warmest
Overnight low
39°
6th coldest
Precipitation
4.5 in
12 wet days
Daylight
13 h 06 min
5:19 AM – 6:27 PM
Cloud cover
67%
9th clearest
Wind
9 mph
1st windiest
Solar energy
4.94 kWh/m²
Travel score
4.1
out of 10

Bartlett is village straddling Cook, DuPage and Kane Counties in Illinois, United States of America.

Density
1,011/km²
people per km²
Founded
1891

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 54°F in the first days to 63°F by the end.

A typical April day in Bartlett reaches about 58°F in the afternoon and slips back to 39°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 44°F and 73°F. Set against its neighbours, April runs about 12°F warmer than March and about 11°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15335
25435
35435
45436
55536
65536
75537
85637
95637
105738
115738
125738
135838
145839
155939
165940
175940
186040
196040
206041
216041
226142
236142
246142
256242
266243
276243
286344
296344
306344

How April really feels in Bartlett

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 11 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
11
wind chill below the day's low

The story in April is cold — wind chill drags the overnight "feels like" below the raw low.

Bartlett 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
Jan30° / 16°2.17.95.79.30.0
Feb34° / 20°1.974.910.30.0
Mar46° / 29°2.69.63.111.71.4
Apr58° / 39°4.512113.14.1
May69° / 50°4.612.5014.36.0
Jun79° / 60°4.212.30156.3
Jul82° / 65°3.711.2014.76.1
Aug80° / 62°3.710.6013.76.5
Sep74° / 55°3.18.4012.37.1
Oct61° / 43°3.190.210.95.2
Nov47° / 32°2.481.59.61.5
Dec35° / 22°2.284.490.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in April.

Beyond those clear spells, partly cloudy skies cover about 13% of April, with mostly cloudy or overcast conditions the remaining 64%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13367
23367
33367
43466
53466
63367
73466
83466
93565
103565
113565
123664
133664
143664
153763
163763
173763
183763
193862
203862
213961
223862
233862
243862
253862
263763
273664
283664
293664
303664

Chance of precipitation in April

Any precipitationSnow

Bartlett gets around 4.5 in of rain and snow over 12 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 40% and peaks near 41% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1365
2374
3375
4375
5385
6385
7385
8395
9395
10395
11405
12405
13405
14415
15414
16414
17414
18413
19413
20413
21412
22412
23412
24411
25411
26411
27401
28401
29401
30400

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19820
29820
39820
49820
59820
69820
79820
89721
99721
109721
119721
129721
139721
149721
159721
169721
179631
189631
199631
209631
219631
229541
239640
249640
259550
269550
279550
289361
299361
309271

Wind in April

Winds average 9 mph in April, the windiest month of the year.

Across April, 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.

051015151015202530
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
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light 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 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 84 minutes over April. Sunrise moves from 5:45 AM to 4:57 AM, and sunset from 6:10 PM to 6:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:456:10
212.55:436:11
312.55:416:12
412.65:396:13
512.65:386:15
612.75:366:16
712.75:346:17
812.85:326:18
912.85:316:19
1012.95:296:20
1112.95:276:21
1212.95:266:22
1313.05:246:24
1413.05:226:25
1513.15:216:26
1613.15:196:27
1713.25:176:28
1813.25:166:29
1913.35:146:30
2013.35:136:31
2113.45:116:33
2213.45:096:34
2313.45:086:35
2413.55:066:36
2513.55:056:37
2613.65:036:38
2713.65:026:39
2813.75:006:40
2913.74:596:42
3013.84:576:43

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 4.94 kWh/m².

For context, solar energy here swings from a low near 1.62 kWh/m² to a high of 6.3 kWh/m² in June across the year — April's 4.94 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.6Bright
54.6Bright
64.6Bright
74.7Bright
84.7Bright
94.7Bright
104.8Bright
114.8Bright
124.8Bright
134.9Bright
144.9Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.1Bright
205.1Bright
215.1Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in April

Is April a good time to visit Bartlett?

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

4.1
Sightseeing
7th-best month of the year
0.4
Beach & pool
7th-best month of the year

April is a reasonable time to visit Bartlett for sightseeing.

What to pack for Bartlett in April

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

In April, Bartlett sees daytime highs around 58°F and nights near 39°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

Sea temperature near Bartlett in April

The nearest coast averages about 39°F in April — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 30 mi away) is warmest in August at about 73°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 13 to Sep 15 — about 2.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May45Bracing
Jun57Bracing
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Bartlett in April

LowModerateHighVery highExtreme

Clear-sky midday UV in April peaks around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Bartlett peaks around June 23 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 2 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 23UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Bartlett 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 Bartlett is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1817 µg/m³Oct 229 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar16Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov10Good
Dec11Good
Location & terrain

Where is Bartlett?

Bartlett sits at 42.0°N, 88.2°W, 810 ft above sea level, in United States. The nearest listed city is Hanover Park, 1.9 mi away.

Topography around Bartlett

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

Within 2 miles, the terrain around Bartlett has only modest variations in elevation — a maximum elevation change of 161 ft around an average of 807 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 364 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Bartlett is covered by trees (36%), artificial surfaces (33%) and grassland (26%) within 2 miles, trees (38%), artificial surfaces (30%) and grassland (26%) within 10 miles, and cropland (37%) within 50 miles.

2 miles
161 ft
10 miles
364 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Hanover Park 1.9 mi · Streamwood 1.9 mi · South Elgin 5.6 mi · Roselle 5.6 mi · Elgin 5.6 mi · Schaumburg 5.6 mi · Bloomingdale 6.2 mi · Carol Stream 6.2 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 Bartlett (41.995°, -88.1856°, elevation 810 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).