Galesburg weather in April

In April, Galesburg sees average daytime highs of 61°F and overnight lows near 42°F, with 4.4 in of precipitation across 12 wet days and about 13.1 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 56°F in the first days to 65°F by the end. The sky is clear or mostly clear about 25% 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 42 min by month's end. Set against the rest of the year, April is Galesburg's 8th-clearest and 1st-windiest month. For the whole year in context, see Galesburg's year-round climate.

Daytime high
61°
7th warmest
Overnight low
42°
6th coldest
Precipitation
4.4 in
12 wet days
Daylight
13 h 06 min
5:29 AM – 6:34 PM
Cloud cover
65%
8th clearest
Wind
10 mph
1st windiest
Solar energy
5.02 kWh/m²
Travel score
4.7
out of 10

Galesburg is county seat of Knox County, Illinois, United States.

Density
674/km²
people per km²
Founded
1837

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 56°F in the first days to 65°F by the end.

A typical April day in Galesburg reaches about 61°F in the afternoon and slips back to 42°F overnight — a 19°F spread between the day's warmth and the night's chill. On most days the high lands between 48°F and 75°F. Set against its neighbours, April runs about 12°F warmer than March and about 10°F cooler than May.

20°40°60°80°151015202530
Avg high (°F)Avg low (°F)
15637
25637
35638
45738
55738
65838
75839
85839
95940
105940
116040
126041
136041
146141
156142
166142
176242
186243
196243
206344
216344
226344
236344
246445
256445
266446
276546
286546
296547
306647

How April really feels in Galesburg

Once humidity and wind are folded in, April averages 0 days that feel above 90°F and 6 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
6
wind chill below the day's low

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

Galesburg weather by month

How April compares with the rest of the year at a glance. April is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan32° / 17°2.07.85.29.40.0
Feb36° / 21°2.07.14.310.40.0
Mar49° / 31°2.910.12.211.71.9
Apr61° / 42°4.4120.713.14.7
May71° / 53°4.713.2014.36.1
Jun80° / 63°4.711.6014.96.2
Jul83° / 66°3.59.6014.65.8
Aug82° / 64°3.39.4013.66.5
Sep76° / 56°3.48.5012.37.2
Oct63° / 44°2.98.70.210.95.7
Nov48° / 33°2.67.71.29.72.0
Dec37° / 23°2.17.13.69.10.0

Cloud cover in April

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 25% 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 63%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23862
33862
43862
53862
63862
73862
83961
93961
103862
113862
123862
133862
143862
153763
163763
173763
183862
193763
203763
213763
223763
233664
243664
253664
263664
273763
283763
293763
303862

Chance of precipitation in April

Any precipitationSnow

Galesburg gets around 4.4 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 41% and peaks near 42% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202530
Rain chance (%)Snow chance (%)
1373
2373
3373
4373
5373
6383
7383
8394
9394
10404
11404
12414
13414
14424
15423
16423
17423
18423
19422
20422
21422
22421
23421
24421
25421
26420
27420
28420
29420
30420

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 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
19640
29640
39541
49541
59541
69541
79541
89541
99541
109442
119442
129442
139442
149442
159352
169352
179352
189352
199352
209352
219352
229262
239262
249262
259172
269172
279082
288983
298893
3086104

Wind in April

Winds average 10 mph in April, the windiest month of the year.

Across April, 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.

051015151015202530
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
1210light breeze
1310light breeze
1410light breeze
1510light breeze
1610light breeze
1710light breeze
1810light breeze
1910light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze

Sunrise & sunset in April

DaylightNight

Daylight runs from about 12 h 24 min at the start of April to 13 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 78 minutes over April. Sunrise moves from 5:54 AM to 5:08 AM, and sunset from 6:18 PM to 6:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:546:18
212.55:526:19
312.55:506:21
412.55:496:22
512.65:476:23
612.65:456:24
712.75:446:25
812.75:426:26
912.85:406:27
1012.85:396:28
1112.95:376:29
1212.95:356:30
1313.05:346:31
1413.05:326:32
1513.05:316:33
1613.15:296:34
1713.15:276:36
1813.25:266:37
1913.25:246:38
2013.35:236:39
2113.35:216:40
2213.45:206:41
2313.45:186:42
2413.45:176:43
2513.55:156:44
2613.55:146:45
2713.65:126:46
2813.65:116:47
2913.65:106:48
3013.75:086:49

Solar energy in April

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in April, about 5.02 kWh/m².

For context, solar energy here swings from a low near 1.75 kWh/m² to a high of 6.41 kWh/m² in June across the year — April's 5.02 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
14.6Bright
24.6Bright
34.7Bright
44.7Bright
54.7Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.9Bright
114.9Bright
124.9Bright
135.0Bright
145.0Bright
155.0Bright
165.0Bright
175.1Bright
185.1Bright
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 Galesburg?

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

4.7
Sightseeing
7th-best month of the year
0.9
Beach & pool
7th-best month of the year

April is a reasonable time to visit Galesburg for sightseeing.

What to pack for Galesburg in April

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

In April, Galesburg sees daytime highs around 61°F and nights near 42°F. Worth packing: a warm layer, rain gear and sun protection. About 12 days see rain.

a warm layerrain gearsun protection

UV index in Galesburg 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 Galesburg peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highHighModerateJun 19UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr6High
May8Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep7High
Oct4Moderate
Nov3Moderate
Dec2Low

Air quality in Galesburg 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 Galesburg is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1915 µg/m³Oct 228 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr11Good
May13Moderate
Jun13Moderate
Jul16Moderate
Aug15Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Galesburg?

Galesburg sits at 40.9°N, 90.4°W, 771 ft above sea level, in United States. The nearest listed city is Macomb, 37 mi away.

Topography around Galesburg

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

Within 2 miles, the terrain around Galesburg has only modest variations in elevation — a maximum elevation change of 75 ft around an average of 778 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 259 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 528 ft.

The land around Galesburg is covered by artificial surfaces (31%), trees (26%) and grassland (22%) within 2 miles, cropland (67%) and trees (21%) within 10 miles, and cropland (68%) and trees (21%) within 50 miles.

2 miles
75 ft
10 miles
259 ft
50 miles
528 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
April weather nearby: Macomb 37 mi · East Moline 39 mi · Moline 39 mi · Burlington 40 mi · Rock Island 40 mi · Bettendorf 40 mi · Davenport 41 mi · North Peoria 44 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 Galesburg (40.9478°, -90.3712°, elevation 771 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).