July is one of the warmer months of the year in Rockford, with average highs near 27.5°C and lows around 16.6°C (mean 22.1°C). It is a relatively wet time of year, averaging 104 mm of rainfall and 76% relative humidity across the period.
July is one of the warmer months of the year in Rockford. Across 45 years of records, the warmest July in Rockford was 2012 — when the month averaged 27.3°C — while the coldest was 2009 at 18.5°C. Typical July days reach 27.5°C with nights near 16.6°C. The long-term July temperature trend is broadly flat.
July is a relatively wet time of year in Rockford, averaging 104 mm of rainfall. The wettest July on record was 2010 with 209 mm, while the driest was 2002 at 39 mm.
Relative humidity in Rockford during July averages 76%. The most humid July was 1993 at 86%, and the least humid was 1988 at 54%.
July receives about 6.1 kWh/m²/day of solar energy in Rockford. The sunniest Julys were 2007 and 2019 at 6.8 kWh/m²/day, and the cloudiest was 1992 at 4.8.
Average wind speed in Rockford during July is 2.4 m/s. The windiest July was 1993 at 2.8 m/s, while the calmest was 2024 at 1.9 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.6°C | 21.3°C | 21.8°C | 22.3°C | 22.7°C | +0.1°C |
| Avg High | 28.4°C | 26.6°C | 27.6°C | 27.5°C | 28.0°C | -0.4°C |
| Avg Low | 16.8°C | 16.0°C | 16.1°C | 17.2°C | 17.3°C | +0.5°C |
| Avg Rain | 107 mm | 99 mm | 90 mm | 110 mm | 127 mm | +20 mm |
July temperatures in Rockford have risen by about 0.8°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 7.4°C (2001) to a record high of 40.2°C (2012).
Rainfall in July is a relatively wet time of year, averaging 104 mm, with a wettest year of 209 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
One of the best times to visit Rockford
July is one of the best times to visit Rockford. Expect days averaging 27.5°C and nights around 16.6°C (mean 22.1°C) — warmer than Rockford's yearly average — with higher rainfall (104 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 28.5°C | 23.4°C | 18.3°C | 33.1°C | 12.8°C | 142 mm | 78% | 2.1 m/s | 5.8 |
| 2024 | 26.5°C | 21.6°C | 16.8°C | 30.4°C | 10.5°C | 145 mm | 80% | 1.9 m/s | 6 |
| 2023 | 28.6°C | 22.8°C | 17.0°C | 33.9°C | 13.1°C | 125 mm | 69% | 2 m/s | 6.4 |
| 2022 | 27.6°C | 22.2°C | 16.7°C | 31.7°C | 13.7°C | 138 mm | 75% | 2.5 m/s | 6.2 |
| 2021 | 28.9°C | 22.9°C | 16.9°C | 34.1°C | 12.1°C | 55 mm | 70% | 2.5 m/s | 5.4 |
| 2020 | 27.7°C | 23.0°C | 18.3°C | 30.6°C | 14.3°C | 154 mm | 81% | 2.1 m/s | 6.6 |
| 2019 | 27.3°C | 22.8°C | 18.4°C | 30.8°C | 13.0°C | 87 mm | 83% | 2.3 m/s | 6.8 |
| 2018 | 26.6°C | 21.5°C | 16.3°C | 30.2°C | 11.5°C | 66 mm | 79% | 2.1 m/s | 6.6 |
| 2017 | 26.2°C | 21.2°C | 16.3°C | 29.3°C | 10.1°C | 190 mm | 83% | 2.2 m/s | 6.3 |
| 2016 | 27.5°C | 22.6°C | 17.7°C | 31.0°C | 12.1°C | 106 mm | 80% | 2.3 m/s | 6 |
| 2015 | 26.4°C | 21.0°C | 15.5°C | 30.9°C | 8.5°C | 97 mm | 77% | 2.2 m/s | 6 |
| 2014 | 24.4°C | 19.1°C | 13.8°C | 29.0°C | 9.2°C | 65 mm | 79% | 2.4 m/s | 6.2 |
| 2013 | 25.7°C | 20.7°C | 15.7°C | 31.2°C | 8.8°C | 70 mm | 82% | 2.2 m/s | 6.5 |
| 2012 🔥 | 34.2°C | 27.3°C | 20.4°C | 40.2°C | 15.9°C | 72 mm | 57% | 2.3 m/s | 6.4 |
| 2011 | 29.0°C | 24.3°C | 19.5°C | 34.3°C | 13.6°C | 136 mm | 79% | 2 m/s | 6.2 |
| 2010 🌧️ | 27.6°C | 22.9°C | 18.2°C | 29.7°C | 10.9°C | 209 mm | 83% | 2.4 m/s | 6.2 |
| 2009 ❄️ | 23.8°C | 18.5°C | 13.3°C | 27.5°C | 10.4°C | 71 mm | 80% | 2.4 m/s | 5.4 |
| 2008 | 26.1°C | 21.0°C | 16.0°C | 28.8°C | 9.1°C | 146 mm | 83% | 2.5 m/s | 6.4 |
| 2007 | 27.6°C | 21.6°C | 15.6°C | 32.6°C | 10.7°C | 110 mm | 71% | 2.4 m/s | 6.8 |
| 2006 | 28.7°C | 23.1°C | 17.5°C | 36.1°C | 12.4°C | 85 mm | 75% | 2.4 m/s | 6.2 |
| 2005 | 30.8°C | 24.0°C | 17.2°C | 38.0°C | 11.4°C | 72 mm | 62% | 2.5 m/s | 6.2 |
| 2004 | 25.3°C | 20.2°C | 15.2°C | 29.8°C | 9.4°C | 74 mm | 81% | 2.4 m/s | 5.6 |
| 2003 | 28.8°C | 22.4°C | 16.0°C | 34.4°C | 11.9°C | 125 mm | 67% | 2.5 m/s | 6.3 |
| 2002 | 30.1°C | 24.1°C | 18.1°C | 35.7°C | 13.5°C | 39 mm | 69% | 2.4 m/s | 6.3 |
| 2001 | 29.1°C | 23.0°C | 16.8°C | 34.8°C | 7.4°C | 60 mm | 69% | 2.2 m/s | 6.5 |
| 2000 | 25.3°C | 20.3°C | 15.3°C | 28.7°C | 11.1°C | 113 mm | 80% | 2.4 m/s | 5.7 |
| 1999 | 28.5°C | 23.5°C | 18.5°C | 33.9°C | 11.6°C | 96 mm | 80% | 2.7 m/s | 6.4 |
| 1998 | 26.6°C | 21.3°C | 15.9°C | 30.2°C | 12.2°C | 65 mm | 77% | 2.1 m/s | 6.5 |
| 1997 | 27.2°C | 21.4°C | 15.6°C | 32.8°C | 9.7°C | 71 mm | 75% | 2.5 m/s | 6 |
| 1996 | 24.3°C | 19.0°C | 13.7°C | 29.3°C | 9.0°C | 123 mm | 79% | 2.3 m/s | 6 |
| 1995 | 27.8°C | 22.7°C | 17.6°C | 32.7°C | 10.5°C | 105 mm | 77% | 2.6 m/s | 6.4 |
| 1994 | 26.3°C | 21.0°C | 15.7°C | 30.0°C | 11.0°C | 94 mm | 78% | 2.6 m/s | 5.6 |
| 1993 | 25.6°C | 21.0°C | 16.4°C | 29.3°C | 12.1°C | 121 mm | 86% | 2.8 m/s | 5.1 |
| 1992 | 24.8°C | 19.5°C | 14.2°C | 31.6°C | 11.0°C | 154 mm | 79% | 2.5 m/s | 4.8 |
| 1991 | 29.1°C | 22.9°C | 16.7°C | 35.3°C | 11.6°C | 57 mm | 67% | 2.5 m/s | 6.3 |
| 1990 | 25.7°C | 20.5°C | 15.3°C | 31.1°C | 10.6°C | 100 mm | 78% | 2.7 m/s | 5.7 |
| 1989 | 29.8°C | 23.4°C | 17.0°C | 37.4°C | 12.5°C | 165 mm | 68% | 2.3 m/s | 6 |
| 1988 | 32.5°C | 24.9°C | 17.2°C | 38.0°C | 8.8°C | 52 mm | 54% | 2.2 m/s | 6.5 |
| 1987 | 29.6°C | 24.1°C | 18.6°C | 35.1°C | 10.6°C | 126 mm | 73% | 2.4 m/s | 5.9 |
| 1986 | 27.1°C | 22.2°C | 17.3°C | 31.0°C | 10.1°C | 112 mm | 82% | 2.5 m/s | 6 |
| 1985 | 27.5°C | 21.4°C | 15.4°C | 33.0°C | 11.0°C | 96 mm | 69% | 2.6 m/s | 6 |
| 1984 | 26.2°C | 20.5°C | 14.8°C | 30.8°C | 8.0°C | 76 mm | 74% | 2.4 m/s | 6.1 |
| 1983 | 28.0°C | 23.3°C | 18.5°C | 32.2°C | 9.5°C | 86 mm | 81% | 2.3 m/s | — |
| 1982 | 26.7°C | 21.6°C | 16.5°C | 29.8°C | 9.5°C | 183 mm | 81% | 2.5 m/s | — |
| 1981 | 28.1°C | 22.2°C | 16.3°C | 33.9°C | 9.8°C | 65 mm | 71% | 2.3 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 27.5°C with lows near 16.6°C (mean 22.1°C), based on 45 years of NASA POWER data.
July averages 104 mm of rainfall in Rockford, a relatively wet time of year. The wettest on record was 209 mm in 2010.
The hottest July reached 40.2°C in 2012. The coldest dipped to 7.4°C in 2001.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 0.8°C. Daytime highs moved from 27.3°C to 28°C and overnight lows from 16.3°C to 17.1°C over the same span.
July is one of the warmer months of the year in Rockford and a relatively wet time of year, so plan for around 27.5°C daytime highs and 16.6°C at night.
Not quite — July is the 12th coolest month in Rockford, averaging 22.1°C.
For July in Rockford, pack light layers you can adjust through the day, with typical highs of 27.5°C and lows of 16.6°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 76% — quite humid.
Average wind speed in July is 2.4 m/s. The windiest July on record averaged 2.8 m/s (1993).
The wettest July on record was 2010 with 209 mm. On average, July sees 104 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Rockford behaves each July, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for July specifically, along with year-by-year records and how the month has changed over the decades.
