Freeport weather in June

In June, Freeport sees average daytime highs of 79°F and overnight lows near 60°F, with 4.3 in of rain across 12 wet days and about 15 hours of daylight. It is the 3rd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 75°F in the first days to 81°F by the end. The sky is clear or mostly clear about 32% of the time in June, and the air most often feels dry.

Daylight stretches from about 14 h 54 min at the start of June to 15 h 06 min by month's end. Set against the rest of the year, June is Freeport's 5th-clearest and 10th-windiest month. For the whole year in context, see Freeport's year-round climate.

Daytime high
79°
3rd warmest
Overnight low
60°
10th coldest
Rainfall
4.3 in
12 wet days
Daylight
15 h 06 min
4:26 AM – 7:31 PM
Cloud cover
59%
5th clearest
Wind
7 mph
10th windiest
Solar energy
6.32 kWh/m²
Travel score
6.3
out of 10

Freeport is city and county seat and largest city of Stephenson County, Illinois, United States.

Density
802/km²
people per km²
Founded
1827

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

Temperature in June

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 75°F in the first days to 81°F by the end.

A typical June day in Freeport reaches about 79°F in the afternoon and slips back to 60°F overnight — a 18°F spread between the day's warmth and the night's chill. On most days the high lands between 69°F and 88°F. Set against its neighbours, June runs about 10°F warmer than May and about 3°F cooler than July.

40°60°80°151015202530
Avg high (°F)Avg low (°F)
17556
27556
37557
47657
57657
67658
77758
87758
97759
107859
117860
127860
137860
147960
157961
167961
178061
188062
198062
208062
218062
228062
238063
248163
258163
268163
278163
288163
298163
308164

How June really feels in Freeport

Once humidity and wind are folded in, June 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

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

Freeport weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan29° / 15°1.87.55.89.30.0
Feb33° / 18°1.86.65.110.30.0
Mar46° / 29°2.69.52.911.61.2
Apr58° / 39°4.311.91.113.14.0
May69° / 50°4.413.1014.45.9
Jun79° / 60°4.3120156.3
Jul82° / 64°3.610.4014.86.4
Aug80° / 62°3.79.9013.76.7
Sep73° / 54°3.68.8012.37.0
Oct60° / 42°2.98.80.210.85.0
Nov46° / 31°2.47.81.79.61.3
Dec34° / 21°2.17.64.690.0

Cloud cover in June

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 32% of the time in June.

Beyond those clear spells, partly cloudy skies cover about 15% of June, with mostly cloudy or overcast conditions the remaining 53%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14357
24357
34357
44357
54456
64456
74456
84456
94555
104456
114456
124555
134456
144456
154555
164555
174555
184654
194753
204852
215050
225050
235149
245149
255248
265347
275446
285446
295545
305545

Chance of precipitation in June

Any precipitation

Freeport gets around 4.3 in of rain over 12 wet days in June. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 42% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202530
Rain chance (%)
142
242
342
442
542
641
741
841
941
1041
1141
1241
1341
1441
1541
1641
1741
1841
1940
2039
2139
2238
2338
2437
2537
2636
2736
2835
2935
3035

Humidity in June

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, June lands in the dry band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 25% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1532015111
2532015111
3502116121
4492216121
5482217131
6462317131
7452317141
8432418151
9412418161
10392518171
11372519181
12352519192
13332519202
14322520212
15302520232
16282521243
17272521243
18262421253
19252422264
20242422264
21242322274
22232322275
23232222275
24222222286
25222122287
26222122287
27212122288
28212022279
29202022289
302020222710

Wind in June

Winds average 7 mph in June.

Across June, daily wind ranges from about 7 mph on the calmest days to 8 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (mph)Feels
18light breeze
27light breeze
37light breeze
47light breeze
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

Sunrise & sunset in June

DaylightNight

Daylight runs from about 14 h 54 min at the start of June to 15 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over June. Sunrise moves from 4:30 AM to 4:30 AM, and sunset from 7:22 PM to 7:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
114.94:307:22
214.94:307:22
314.94:297:23
414.94:297:24
514.94:297:25
615.04:287:25
715.04:287:26
815.04:287:27
915.04:277:27
1015.04:277:28
1115.04:277:29
1215.04:277:29
1315.04:277:30
1415.14:277:30
1515.14:277:31
1615.14:267:31
1715.14:267:31
1815.14:277:32
1915.14:277:32
2015.14:277:32
2115.14:277:33
2215.14:277:33
2315.14:277:33
2415.14:287:33
2515.14:287:33
2615.14:287:34
2715.14:287:34
2815.14:297:34
2915.14:297:34
3015.14:307:34

Solar energy in June

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in June, about 6.32 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.66 kWh/m² to a high of 6.32 kWh/m² in June across the year — June's 6.32 kWh/m² sits near the top of that range.

0246151015202530
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.0Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.2Intense
106.2Intense
116.2Intense
126.2Intense
136.3Intense
146.3Intense
156.3Intense
166.3Intense
176.3Intense
186.4Intense
196.4Intense
206.4Intense
216.4Intense
226.4Intense
236.4Intense
246.5Intense
256.5Intense
266.5Intense
276.5Intense
286.5Intense
296.5Intense
306.5Intense
Planning a trip in June

Is June a good time to visit Freeport?

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

6.3
Sightseeing
4th-best month of the year
6.0
Beach & pool
3rd-best month of the year

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

What to pack for Freeport in June

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

In June, Freeport sees daytime highs around 79°F and nights near 60°F. Pack sun protection. Worth having: light clothes and rain gear. About 12 days see rain.

sun protectionlight clothesrain gear

UV index in Freeport in June

LowModerateHighVery highExtreme

Clear-sky midday UV in June 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 Freeport peaks around June 19 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 19UV 9Dec 22UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Freeport in June

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Freeport 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 Freeport?

Freeport sits at 42.3°N, 89.6°W, 778 ft above sea level, in United States. The nearest listed city is Rockford, 27 mi away.

Topography around Freeport

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

Within 2 miles, the terrain around Freeport has only modest variations in elevation — a maximum elevation change of 177 ft around an average of 797 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 472 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 853 ft.

The land around Freeport is covered by trees (33%), grassland (24%) and cropland (21%) within 2 miles, cropland (75%) within 10 miles, and cropland (67%) within 50 miles.

2 miles
177 ft
10 miles
472 ft
50 miles
853 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
June weather nearby: Rockford 27 mi · Loves Park 29 mi · Machesney Park 30 mi · Dixon 32 mi · Beloit 34 mi · Sterling 35 mi · Belvidere 40 mi · Janesville 40 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 Freeport (42.2967°, -89.6212°, elevation 778 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).