Macomb weather in July

In July, Macomb sees average daytime highs of 85°F and overnight lows near 67°F, with 3.3 in of rain across 9.7 wet days and about 14.6 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 85°F through the month. The sky is clear or mostly clear about 41% of the time in July, and the air most often feels muggy.

Daylight stretches from about 14 h 54 min at the start of July to 14 h 12 min by month's end. Set against the rest of the year, July is Macomb's 3rd-clearest and 11th-windiest month. For the whole year in context, see Macomb's year-round climate.

Daytime high
85°
1st warmest
Overnight low
67°
12th coldest
Rainfall
3.3 in
9.7 wet days
Daylight
14 h 36 min
4:50 AM – 7:27 PM
Cloud cover
50%
3rd clearest
Wind
6 mph
11th windiest
Solar energy
6.42 kWh/m²
Travel score
5.5
out of 10

Macomb is city in and the county seat of McDonough County, Illinois, United States.

Density
644/km²
people per km²
Founded
1830

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

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 85°F through the month.

A typical July day in Macomb reaches about 85°F in the afternoon and slips back to 67°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 77°F and 93°F. Set against its neighbours, July runs about 3°F warmer than June and about 2°F warmer than August.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18466
28467
38467
48467
58467
68467
78567
88567
98567
108567
118567
128567
138568
148568
158568
168568
178568
188568
198568
208568
218568
228567
238567
248567
258567
268567
278567
288567
298467
308467
318466

How July really feels in Macomb

Once humidity and wind are folded in, July 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

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

Macomb weather by month

How July compares with the rest of the year at a glance. July is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan33° / 19°2.07.64.99.40.0
Feb38° / 22°2.173.810.40.1
Mar50° / 32°2.99.6211.72.3
Apr62° / 43°4.611.90.4135.0
May73° / 54°4.713014.26.2
Jun82° / 64°4.811.7014.85.9
Jul85° / 67°3.39.7014.65.5
Aug83° / 65°3.29.1013.66.1
Sep77° / 57°3.47.6012.37.3
Oct64° / 45°2.88.50.210.95.9
Nov50° / 34°2.7819.82.3
Dec38° / 24°2.173.29.20.0

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 19% of July, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35941
45941
55941
66040
76040
86040
96139
106139
116139
126139
136139
146139
156040
166040
175941
185941
195842
205941
215941
225842
235842
245743
255842
265842
275743
285842
295842
305842
315842

Chance of precipitation in July

Any precipitation

Macomb gets around 3.3 in of rain over 9.7 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 32% and peaks near 35% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
135
234
334
434
533
633
733
832
932
1032
1132
1232
1332
1431
1531
1631
1731
1831
1931
2031
2131
2231
2331
2431
2531
2630
2730
2830
2929
3029
3129

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, July lands in the muggy band about 29% of days. Sticky, muggy-or-worse air turns up on roughly 55% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19202032190
28202032201
38192031201
48192031211
57192031221
67182131221
77182131221
86172131231
96162132232
106162231242
115152232242
125142232252
135142231252
144142331262
154142330262
164132330272
174132429272
184132429282
194132428282
204132428292
215132527282
225142526292
235142526292
245142625282
255152625282
265152724271
275152824271
286162825251
296162825241
306162825231
317162826221

Wind in July

Winds average 6 mph in July.

Across July, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 14 h 54 min at the start of July to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 42 minutes over July. Sunrise moves from 4:40 AM to 5:03 AM, and sunset from 7:32 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:407:32
214.84:417:32
314.84:417:32
414.84:427:31
514.84:427:31
614.84:437:31
714.84:437:31
814.84:447:30
914.84:457:30
1014.74:457:30
1114.74:467:29
1214.74:477:29
1314.74:477:29
1414.74:487:28
1514.64:497:28
1614.64:507:27
1714.64:507:26
1814.64:517:26
1914.64:527:25
2014.54:537:25
2114.54:547:24
2214.54:547:23
2314.44:557:22
2414.44:567:21
2514.44:577:21
2614.44:587:20
2714.34:597:19
2814.35:007:18
2914.35:017:17
3014.25:027:16
3114.25:037:15

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 6.42 kWh/m².

For context, solar energy here swings from a low near 1.8 kWh/m² to a high of 6.43 kWh/m² in June across the year — July's 6.42 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.6Intense
26.6Intense
36.6Intense
46.6Intense
56.6Intense
66.5Intense
76.5Intense
86.5Intense
96.5Intense
106.5Intense
116.5Intense
126.5Intense
136.5Intense
146.5Intense
156.5Intense
166.5Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.3Intense
226.3Intense
236.3Intense
246.3Intense
256.3Intense
266.3Intense
276.2Intense
286.2Intense
296.2Intense
306.2Intense
316.2Intense
Planning a trip in July

Is July a good time to visit Macomb?

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

5.5
Sightseeing
6th-best month of the year
7.1
Beach & pool
2nd-best month of the year

July is a reasonable time to visit Macomb for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Macomb in July

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

In July, Macomb sees daytime highs around 85°F and nights near 67°F. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Macomb in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Macomb 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
Oct3Moderate
Nov3Moderate
Dec2Low

Air quality in Macomb in July

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Macomb is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (October, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJul 1815 µg/m³Oct 227 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar12Good
Apr10Good
May13Moderate
Jun13Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct7Good
Nov8Good
Dec9Good
Location & terrain

Where is Macomb?

Macomb sits at 40.5°N, 90.7°W, 705 ft above sea level, in United States. The nearest listed city is Burlington, 34 mi away.

Topography around Macomb

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

Within 2 miles, the terrain around Macomb has only modest variations in elevation — a maximum elevation change of 141 ft around an average of 682 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 256 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 472 ft.

The land around Macomb is covered by trees (32%), cropland (27%) and grassland (23%) within 2 miles, cropland (73%) within 10 miles, and cropland (63%) and trees (27%) within 50 miles.

2 miles
141 ft
10 miles
256 ft
50 miles
472 ft
treesgrasslandcroplandartificial surfaceswater
July weather nearby: Burlington 34 mi · Galesburg 37 mi · Quincy 53 mi · Pekin 55 mi · Jacksonville 55 mi · East Peoria 59 mi · Peoria 59 mi · North Peoria 60 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 Macomb (40.4592°, -90.6718°, elevation 705 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).