Dixon weather in August

In August, Dixon sees average daytime highs of 81°F and overnight lows near 63°F, with 3.3 in of rain across 9.3 wet days and about 13.7 hours of daylight. It is the 2nd-warmest and 6th-wettest month of the year here.

Day-to-day highs hold fairly steady near 81°F through the month. The sky is clear or mostly clear about 38% of the time in August, and the air most often feels muggy.

Daylight stretches from about 14 h 18 min at the start of August to 13 hours by month's end. Set against the rest of the year, August is Dixon's 2nd-clearest and 12th-windiest month. For the whole year in context, see Dixon's year-round climate.

Daytime high
81°
2nd warmest
Overnight low
63°
11th coldest
Rainfall
3.3 in
9.3 wet days
Daylight
13 h 42 min
5:11 AM – 6:53 PM
Cloud cover
53%
2nd clearest
Wind
6 mph
12th windiest
Solar energy
5.52 kWh/m²
Travel score
6.7
out of 10

Dixon is city and county seat of Lee County, Illinois, United States.

Density
752/km²
people per km²
Founded
1828

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 81°F through the month.

A typical August day in Dixon reaches about 81°F in the afternoon and slips back to 63°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 73°F and 88°F. Set against its neighbours, August runs about 2°F cooler than July and about 6°F warmer than September.

50°60°70°80°90°151015202531
Avg high (°F)Avg low (°F)
18264
28264
38264
48264
58164
68164
78164
88164
98164
108163
118163
128163
138163
148163
158163
168163
178063
188063
198063
208063
218062
228062
238062
248062
258062
268062
278062
288062
298061
308061
318061

How August really feels in Dixon

Once humidity and wind are folded in, August 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

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

Dixon weather by month

How August compares with the rest of the year at a glance. August is the 2nd-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 16°2.07.75.39.30.0
Feb34° / 19°1.96.64.410.30.0
Mar47° / 30°2.79.42.511.71.6
Apr60° / 41°4.511.60.913.14.5
May71° / 51°4.813.2014.36.0
Jun80° / 61°4.411.90156.3
Jul82° / 65°3.710.2014.76.2
Aug81° / 63°3.39.3013.76.7
Sep75° / 55°3.48.6012.37.1
Oct62° / 43°3.08.70.210.95.4
Nov47° / 32°2.67.81.49.61.6
Dec35° / 22°2.27.54.190.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 18% of August, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35743
45743
55644
65644
75644
85644
95545
105545
115446
125446
135446
145545
155545
165545
175545
185545
195545
205545
215446
225545
235644
245545
255644
265743
275842
285842
295941
305941
315941

Chance of precipitation in August

Any precipitation

Dixon gets around 3.3 in of rain over 9.3 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 30% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
130
230
330
430
530
630
730
830
930
1030
1130
1230
1330
1430
1530
1630
1730
1830
1930
2031
2131
2231
2331
2430
2530
2630
2729
2829
2929
3029
3129

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the muggy band about 25% of days. Sticky, muggy-or-worse air turns up on roughly 38% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
19232626151
29232626151
39242626151
49242626150
510242625140
610242625140
710242625140
811242625140
911242625140
1012242624130
1112242624130
1213242624130
1313242624130
1413242625120
1514242525120
1614242525120
1714232525120
1814232526120
1914232526120
2014222527120
2114222527120
2215222427120
2315232427110
2415232427110
2516242326110
2616242326110
2717252225110
2818252225100
2919262224100
302026212390
312127212390

Wind in August

Winds average 6 mph in August, the calmest month.

Across August, 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
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 14 h 18 min at the start of August to 13 hours by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 78 minutes over August. Sunrise moves from 4:55 AM to 5:27 AM, and sunset from 7:13 PM to 6:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.34:557:13
214.34:567:11
314.24:577:10
414.24:587:09
514.14:597:08
614.15:007:07
714.15:027:05
814.05:037:04
914.05:047:03
1013.95:057:02
1113.95:067:00
1213.95:076:59
1313.85:086:57
1413.85:096:56
1513.75:106:55
1613.75:116:53
1713.75:126:52
1813.65:136:50
1913.65:146:49
2013.55:156:47
2113.55:166:45
2213.45:176:44
2313.45:186:42
2413.45:196:41
2513.35:216:39
2613.35:226:37
2713.25:236:36
2813.25:246:34
2913.15:256:32
3013.15:266:31
3113.05:276:29

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.52 kWh/m².

For context, solar energy here swings from a low near 1.71 kWh/m² to a high of 6.34 kWh/m² in June across the year — August's 5.52 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Bright
36.0Bright
45.9Bright
55.9Bright
65.8Bright
75.8Bright
85.8Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.4Bright
205.4Bright
215.4Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.2Bright
275.2Bright
285.2Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Is August a good time to visit Dixon?

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

6.7
Sightseeing
2nd-best month of the year
6.8
Beach & pool
2nd-best month of the year

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

What to pack for Dixon in August

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

In August, Dixon sees daytime highs around 81°F and nights near 63°F. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Dixon in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Dixon peaks around June 19 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 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 highHighModerateLowJun 19UV 9Dec 20UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Dixon in August

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Dixon is worst in July — around 16 µg/m³ PM2.5 (moderate), about 2.0× the cleanest month (October, 8 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodJul 1915 µg/m³Oct 238 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb13Moderate
Mar13Moderate
Apr12Good
May13Moderate
Jun14Moderate
Jul16Moderate
Aug14Moderate
Sep11Good
Oct8Good
Nov8Good
Dec9Good
Location & terrain

Where is Dixon?

Dixon sits at 41.8°N, 89.5°W, 682 ft above sea level, in United States. The nearest listed city is Sterling, 12 mi away.

Topography around Dixon

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

Within 2 miles, the terrain around Dixon has only modest variations in elevation — a maximum elevation change of 203 ft around an average of 735 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 299 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 886 ft.

The land around Dixon is covered by trees (30%), cropland (24%) and grassland (22%) within 2 miles, cropland (74%) within 10 miles, and cropland (77%) within 50 miles.

2 miles
203 ft
10 miles
299 ft
50 miles
886 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
August weather nearby: Sterling 12 mi · Freeport 32 mi · Rockford 36 mi · Clinton 37 mi · DeKalb 38 mi · Loves Park 40 mi · Machesney Park 42 mi · Sycamore 42 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 Dixon (41.8389°, -89.4796°, elevation 682 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).