Last updated: June 24, 2025
In August, the average temperature in Fairfield, United States reaches a warm 30°C (86°F), with minimums dipping to 20°C (68°F) and maximums soaring to 40°C (104°F). Expect an average of 86 mm (3.4 in) of precipitation over 8 days, accompanied by a comfortable average humidity of 67%.
In August in Fairfield, the average temperature is 30°C (86°F). Maximums can reach 40°C (104°F), while minimums can be as low as 20°C (68°F). Travelers should be prepared for hot weather and stay hydrated while exploring the area.
In Fairfield in August, the precipitation amount reaches 86 mm (3.4 in) over the course of 8 days.
In Fairfield in August humidity is 67%. With an average temperature of 30°C (86°F), this humidity feels like a warm blanket enveloping you, making outdoor activities a bit sticky and challenging but still manageable with frequent breaks for hydration and shade.
In Fairfield in August, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Fairfield.
UV Risk Categories
Weather in Fairfield varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Fairfield, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 10°C (50°F) | 84 mm (3.3 inches) | 79% | moderate |
February Weather | 11°C (52°F) | 113 mm (4.5 inches) | 80% | high |
March Weather | 17°C (62°F) | 105 mm (4.1 inches) | 78% | very high |
April Weather | 19°C (67°F) | 117 mm (4.6 inches) | 79% | extreme |
May Weather | 24°C (75°F) | 171 mm (6.7 inches) | 81% | extreme |
June Weather | 28°C (82°F) | 82 mm (3.2 inches) | 77% | extreme |
July Weather | 30°C (86°F) | 65 mm (2.6 inches) | 71% | extreme |
August Weather | 30°C (86°F) | 86 mm (3.4 inches) | 67% | extreme |
September Weather | 27°C (81°F) | 100 mm (4.0 inches) | 69% | very high |
October Weather | 21°C (70°F) | 117 mm (4.6 inches) | 73% | very high |
November Weather | 15°C (59°F) | 69 mm (2.7 inches) | 82% | high |
December Weather | 12°C (54°F) | 92 mm (3.6 inches) | 87% | moderate |