Madison weather in August
August in Madison: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Madison · #376 of 897 destinations to visit in August · comfort 84/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Madison in August
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Madison climate normals — August
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 64°F | |
| Rainfall | 83 mm / 3.3 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 72% | 💧 humid |
| Dew point | 17°C / 62°F | |
| Sunshine | 11.1 h/day | |
| Daylight | 13.9 h | |
| Wind | 15 km/h / 9 mph | |
| Air quality (US AQI) | 47 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Madison in August — FAQ
- Is August a good time to visit Madison?
- August in Madison: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Madison on SeasonMap's comfort score (84/100).
- What is the weather like in Madison in August?
- In August, Madison averages a daily high of 27.3°C and a low of 17.8°C, with about 83 mm of rain over roughly 9 rainy days.
- What is the air quality in Madison in August?
- Madison has a mean US Air Quality Index of about 47 in August.