July is one of the warmer months of the year in Fairfield, with average highs near 26.4°C and lows around 19.8°C (mean 23.1°C). It is about average for rainfall, averaging 102 mm of rainfall and 78% relative humidity across the period.
July is one of the warmer months of the year in Fairfield. Across 45 years of records, the warmest July in Fairfield was 2020 — when the month averaged 25.1°C — while the coldest was 1984 at 20.5°C. Typical July days reach 26.4°C with nights near 19.8°C. The long-term trend is warming, about 0.6°C per decade.
July is about average for rainfall in Fairfield, averaging 102 mm of rainfall. The wettest July on record was 2021 with 206 mm, while the driest was 1999 at 34 mm.
Relative humidity in Fairfield during July averages 78%. The most humid July was 1984 at 86%, and the least humid was 1999 at 68%.
July receives about 5.9 kWh/m²/day of solar energy in Fairfield. The sunniest July was 2001 at 6.5 kWh/m²/day, and the cloudiest was 2021 at 5.
Average wind speed in Fairfield during July is 1.9 m/s. The windiest Julys were 2001 and 2014 at 2.2 m/s, while the calmest were 1982 and 2019 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 22.2°C | 22.8°C | 22.5°C | 24.0°C | 24.4°C | +2.2°C |
| Avg High | 25.6°C | 26.2°C | 25.7°C | 27.2°C | 27.6°C | +2°C |
| Avg Low | 18.8°C | 19.4°C | 19.3°C | 20.8°C | 21.4°C | +2.6°C |
| Avg Rain | 114 mm | 85 mm | 95 mm | 98 mm | 127 mm | +13 mm |
July temperatures in Fairfield have risen by about 2.4°C between 1981–1985 and 2021–2025.
July has ranged from a record low of 11.2°C (1982) to a record high of 36.1°C (2010).
Rainfall in July is about average for rainfall, averaging 102 mm, with a wettest year of 206 mm.
One of the best times to visit Fairfield
July is one of the best times to visit Fairfield. Expect days averaging 26.4°C and nights around 19.8°C (mean 23.1°C) — warmer than Fairfield's yearly average — with higher rainfall (102 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 | 28.4°C | 25.0°C | 21.7°C | 34.0°C | 17.2°C | 90 mm | 78% | 1.8 m/s | 6.1 |
| 2024 | 27.2°C | 24.3°C | 21.5°C | 30.6°C | 16.6°C | 106 mm | 82% | 1.9 m/s | 5.9 |
| 2023 | 27.6°C | 24.6°C | 21.7°C | 30.6°C | 18.1°C | 186 mm | 82% | 1.9 m/s | 5.7 |
| 2022 | 28.0°C | 24.7°C | 21.5°C | 32.4°C | 17.7°C | 66 mm | 74% | 2 m/s | 6.4 |
| 2021 🌧️ | 25.9°C | 22.9°C | 20.0°C | 29.5°C | 15.0°C | 206 mm | 83% | 2 m/s | 5 |
| 2020 🔥 | 28.2°C | 25.1°C | 22.0°C | 31.7°C | 18.5°C | 109 mm | 78% | 2 m/s | 6.2 |
| 2019 | 27.8°C | 24.6°C | 21.4°C | 31.5°C | 18.1°C | 122 mm | 80% | 1.7 m/s | 6.4 |
| 2018 | 26.9°C | 23.9°C | 20.8°C | 31.3°C | 17.0°C | 129 mm | 79% | 2 m/s | 6.4 |
| 2017 | 25.9°C | 22.9°C | 19.9°C | 30.1°C | 16.2°C | 110 mm | 79% | 1.9 m/s | 5.8 |
| 2016 | 27.8°C | 24.3°C | 20.8°C | 31.7°C | 17.3°C | 108 mm | 75% | 2 m/s | 6.2 |
| 2015 | 26.9°C | 23.6°C | 20.4°C | 31.6°C | 17.1°C | 63 mm | 76% | 1.9 m/s | 6.1 |
| 2014 | 25.5°C | 22.6°C | 19.7°C | 27.4°C | 16.6°C | 101 mm | 79% | 2.2 m/s | 6.1 |
| 2013 | 27.1°C | 24.4°C | 21.7°C | 32.1°C | 17.5°C | 76 mm | 83% | 2 m/s | 5.9 |
| 2012 | 27.8°C | 24.6°C | 21.3°C | 32.0°C | 18.2°C | 112 mm | 74% | 1.9 m/s | 6 |
| 2011 | 27.7°C | 24.3°C | 20.8°C | 34.1°C | 16.1°C | 67 mm | 77% | 1.8 m/s | 6.3 |
| 2010 | 28.8°C | 25.0°C | 21.3°C | 36.1°C | 15.6°C | 92 mm | 72% | 1.8 m/s | 6.3 |
| 2009 | 23.9°C | 21.2°C | 18.5°C | 27.1°C | 15.0°C | 162 mm | 83% | 2 m/s | 5.8 |
| 2008 | 27.1°C | 23.9°C | 20.7°C | 31.5°C | 17.8°C | 105 mm | 78% | 1.8 m/s | 6 |
| 2007 | 25.7°C | 22.4°C | 19.2°C | 29.9°C | 14.0°C | 102 mm | 78% | 1.9 m/s | 6 |
| 2006 | 26.3°C | 23.5°C | 20.6°C | 31.8°C | 17.0°C | 105 mm | 84% | 1.9 m/s | 5.9 |
| 2005 | 26.8°C | 23.4°C | 20.0°C | 31.6°C | 15.7°C | 82 mm | 78% | 1.9 m/s | 5.8 |
| 2004 | 25.5°C | 22.5°C | 19.4°C | 29.0°C | 17.3°C | 110 mm | 80% | 2.1 m/s | 5.2 |
| 2003 | 25.1°C | 22.2°C | 19.4°C | 27.5°C | 16.4°C | 66 mm | 84% | 1.9 m/s | 5.9 |
| 2002 | 27.7°C | 23.8°C | 19.9°C | 32.9°C | 15.3°C | 38 mm | 68% | 1.9 m/s | 6.3 |
| 2001 | 25.0°C | 21.4°C | 17.8°C | 31.0°C | 14.0°C | 50 mm | 72% | 2.2 m/s | 6.5 |
| 2000 | 24.2°C | 21.0°C | 17.8°C | 27.2°C | 14.8°C | 135 mm | 78% | 2 m/s | 5.3 |
| 1999 | 28.8°C | 24.8°C | 20.7°C | 33.5°C | 16.6°C | 34 mm | 68% | 1.9 m/s | 6.1 |
| 1998 | 25.3°C | 22.1°C | 19.0°C | 29.3°C | 15.6°C | 41 mm | 79% | 1.8 m/s | 6.1 |
| 1997 | 26.3°C | 22.5°C | 18.6°C | 32.9°C | 15.0°C | 105 mm | 72% | 2 m/s | 6.3 |
| 1996 | 23.8°C | 20.9°C | 18.1°C | 27.1°C | 15.1°C | 176 mm | 83% | 2.1 m/s | 5.4 |
| 1995 | 26.9°C | 23.4°C | 20.0°C | 31.5°C | 14.1°C | 73 mm | 76% | 1.8 m/s | 5.6 |
| 1994 | 27.3°C | 24.1°C | 21.0°C | 30.9°C | 17.6°C | 73 mm | 80% | 1.8 m/s | 5.7 |
| 1993 | 27.5°C | 23.6°C | 19.7°C | 33.6°C | 16.7°C | 53 mm | 69% | 1.9 m/s | 6 |
| 1992 | 24.5°C | 21.2°C | 17.9°C | 28.3°C | 14.0°C | 136 mm | 79% | 2 m/s | 6.2 |
| 1991 | 26.8°C | 23.2°C | 19.5°C | 33.3°C | 16.1°C | 74 mm | 71% | 1.9 m/s | 5.6 |
| 1990 | 25.0°C | 22.0°C | 19.1°C | 28.3°C | 15.2°C | 83 mm | 81% | 2 m/s | 5.5 |
| 1989 | 24.3°C | 21.4°C | 18.6°C | 28.1°C | 16.0°C | 132 mm | 84% | 1.8 m/s | 5.5 |
| 1988 | 27.0°C | 23.4°C | 19.9°C | 32.0°C | 11.3°C | 147 mm | 79% | 1.8 m/s | 5.4 |
| 1987 | 26.8°C | 23.2°C | 19.7°C | 30.8°C | 15.6°C | 62 mm | 77% | 1.8 m/s | 5.9 |
| 1986 | 25.9°C | 22.4°C | 18.9°C | 31.4°C | 12.7°C | 145 mm | 77% | 1.9 m/s | 5.8 |
| 1985 | 25.7°C | 22.3°C | 18.8°C | 28.8°C | 14.8°C | 113 mm | 76% | 2 m/s | 6.2 |
| 1984 ❄️ | 23.3°C | 20.5°C | 17.7°C | 26.8°C | 13.5°C | 194 mm | 86% | 1.8 m/s | 5.6 |
| 1983 | 25.5°C | 21.8°C | 18.1°C | 28.9°C | 13.3°C | 68 mm | 79% | 1.8 m/s | — |
| 1982 | 25.0°C | 21.4°C | 17.7°C | 29.6°C | 11.2°C | 70 mm | 78% | 1.7 m/s | — |
| 1981 | 27.1°C | 23.3°C | 19.5°C | 31.0°C | 16.1°C | 98 mm | 72% | 2.1 m/s | — |
Actual recorded July data for each year, 1981–2025 — sourced from NASA POWER.
The average high in July is around 26.4°C with lows near 19.8°C (mean 23.1°C), based on 45 years of NASA POWER data.
July averages 102 mm of rainfall in Fairfield, about average for rainfall. The wettest on record was 206 mm in 2021.
The hottest July reached 36.1°C in 2010. The coldest dipped to 11.2°C in 1982.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average July temperatures have risen by about 2.4°C. Daytime highs moved from 25.3°C to 27.4°C and overnight lows from 18.4°C to 21.3°C over the same span.
July is one of the warmer months of the year in Fairfield and about average for rainfall, so plan for around 26.4°C daytime highs and 19.8°C at night.
Not quite — July is the 12th coolest month in Fairfield, averaging 23.1°C.
For July in Fairfield, pack light layers you can adjust through the day, with typical highs of 26.4°C and lows of 19.8°C. Bring an umbrella or light rain jacket too.
Relative humidity in July averages 78% — quite humid.
Average wind speed in July is 1.9 m/s. The windiest July on record averaged 2.2 m/s (2001).
The wettest July on record was 2021 with 206 mm. On average, July sees 102 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 Fairfield 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.
