Rockford in Summer
In summer (June, July and August), Rockford sees average daytime highs around 80°F and overnight lows near 62°F, with 10.8 in of rain over about 31 wet days across the season. It is the warmest season of the year and the 2nd-wettest season.
Over the season highs climb from about 75°F in early June to 79°F by late August. The sky is clear or mostly clear about 34% of the time across summer, and the air most often feels muggy.
Summer is Rockford's best season of the year to visit on our travel score. For the whole year in context, see Rockford's year-round climate.
- Avg daytime high
- 80°F
- warmest season of the year
- Avg overnight low
- 62°F
- Rainfall
- 10.8 in
- 31 wet days
- Avg wind
- 7 mph
- Travel score
- 6.5
- best season of the year
- Months
- Jun · Jul · Aug
Temperature in Rockford in Summer
Over the season highs climb from about 75°F in early June to 79°F by late August.
A typical summer day in Rockford reaches about 80°F and drops to 62°F overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Rockford
Once humidity and wind are folded in, summer brings about 0 days that feel above 90°F and 0 that feel at or below 32°F.
summer sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Rockford weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 29° / 15° | 1.9 | 7.4 | 5.6 | 9.3 | 0.0 |
| Feb | 33° / 18° | 1.8 | 6.9 | 5.2 | 10.3 | 0.0 |
| Mar | 46° / 29° | 2.5 | 9.5 | 3.1 | 11.6 | 1.2 |
| Apr | 58° / 39° | 4.2 | 11.9 | 0.9 | 13.1 | 4.0 |
| May | 69° / 50° | 4.3 | 12.7 | 0.1 | 14.4 | 5.9 |
| Jun | 78° / 60° | 4.0 | 11.7 | 0 | 15 | 6.4 |
| Jul | 82° / 64° | 3.4 | 10 | 0 | 14.8 | 6.4 |
| Aug | 80° / 62° | 3.4 | 9.7 | 0 | 13.7 | 6.7 |
| Sep | 73° / 54° | 3.3 | 8.7 | 0 | 12.3 | 7.0 |
| Oct | 60° / 42° | 2.9 | 8.7 | 0.2 | 10.8 | 5.1 |
| Nov | 46° / 31° | 2.4 | 7.9 | 1.8 | 9.6 | 1.3 |
| Dec | 34° / 21° | 2.1 | 7.6 | 4.6 | 9 | 0.0 |
Cloud cover in Summer
The sky is clear or mostly clear about 34% of the time across summer.
Chance of precipitation in Summer
Rockford gets around 10.8 in of rain over 31 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 7 mph across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 h 54 min in early June to 13 h 06 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.0 kWh/m².
Is summer a good time to visit Rockford?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit Rockford for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Rockford in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Rockford sees daytime highs around 80°F and nights near 62°F. Pack light clothes and sun protection. Worth having: rain gear. About 31 days see rain.
UV index in Rockford in Summer
Clear-sky midday UV across summer averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Rockford 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 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 2 | 3 | 4 | 6 | 8 | 9 | 8 | 8 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | High | Very high | Very high | Very high | Very high | High | Moderate | Moderate | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 2 | Low |
| Feb | 3 | Moderate |
| Mar | 4 | Moderate |
| Apr | 6 | High |
| May | 8 | Very high |
| Jun | 9 | Very high |
| Jul | 8 | Very high |
| Aug | 8 | Very high |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Moderate |
| Dec | 1 | Low |
Air quality in Rockford in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer falls, not just the annual average.
Air quality in Rockford 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 11 | 13 | 13 | 12 | 13 | 14 | 16 | 14 | 11 | 8 | 8 | 9 |
| Level | Good | Moderate | Moderate | Good | Moderate | Moderate | Moderate | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 11 | Good |
| Feb | 13 | Moderate |
| Mar | 13 | Moderate |
| Apr | 12 | Good |
| May | 13 | Moderate |
| Jun | 14 | Moderate |
| Jul | 16 | Moderate |
| Aug | 14 | Moderate |
| Sep | 11 | Good |
| Oct | 8 | Good |
| Nov | 8 | Good |
| Dec | 9 | Good |
Where is Rockford?
Rockford sits at 42.3°N, 89.1°W, 715 ft above sea level, in United States. The nearest listed city is Loves Park, 3.7 mi away.
Topography around Rockford
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Rockford.
Within 2 miles, the terrain around Rockford has only modest variations in elevation — a maximum elevation change of 161 ft around an average of 751 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 338 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 673 ft.
The land around Rockford is covered by artificial surfaces (44%) and trees (39%) within 2 miles, cropland (42%) and trees (26%) within 10 miles, and cropland (67%) within 50 miles.
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
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 Rockford (42.2711°, -89.094°, elevation 715 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.