Monthly climate guide
Madison weather in September
September in Madison is typically warm, with average daytime highs around 23°C (73°F) and night-time lows near 12°C (53°F). The month usually brings about 105 mm of rain (wet) and is a mix of sun and cloud. Daytime highs are 4°C cooler than August and 8°C warmer than October.
What stands out in September
- It cools down fast from here: October is about 8°C cooler.
- Just 380 km apart, but Madison runs about 3°C cooler than Des Moines this month.
- September brings early autumn to Madison.
- Skies are at their clearest this time of year.
Avg high
23°C
73°F
Avg low
12°C
53°F
Rainfall
105 mm
wet
Humidity
77%
relative
Sky
49%
cloud · a mix of sun and cloud
Madison weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -3°C / 26°F | -13°C / 9°F | 39 mm | 89% | 69% |
| February | -2°C / 29°F | -12°C / 11°F | 40 mm | 87% | 63% |
| March | 6°C / 43°F | -4°C / 25°F | 56 mm | 81% | 63% |
| April | 13°C / 55°F | 1°C / 34°F | 97 mm | 78% | 65% |
| May | 20°C / 68°F | 8°C / 47°F | 113 mm | 79% | 64% |
| June | 25°C / 77°F | 14°C / 58°F | 139 mm | 78% | 58% |
| July | 28°C / 82°F | 17°C / 63°F | 102 mm | 77% | 48% |
| August | 27°C / 80°F | 16°C / 61°F | 103 mm | 76% | 52% |
| September | 23°C / 73°F | 12°C / 53°F | 105 mm | 77% | 49% |
| October | 15°C / 59°F | 4°C / 40°F | 93 mm | 79% | 62% |
| November | 6°C / 43°F | -3°C / 27°F | 58 mm | 83% | 65% |
| December | 0°C / 32°F | -7°C / 19°F | 50 mm | 88% | 73% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is September a good time to visit Madison?
Compare the months in the chart above to find your ideal window.
Best time to visit Madison →Other United States cities in September
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Madison weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/madison/september
<a href="https://weathercompare.eu/weather/usa/madison/september">Madison weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/madison" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Madison weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/madison/september">Madison weather in September</a> – WeatherCompare</p>
Madison in September: quick answers
Is September a good time to visit Madison?
Yes. September is one of the best months for Madison, with highs around 23°C and about 105 mm of rain.
How warm is Madison in September?
Average highs are about 23°C (73°F) and average lows about 12°C (53°F), based on 10 years of daily data.
Does it rain a lot in Madison in September?
Madison typically gets around 105 mm of rain in September — wet.
Figures are long-term averages for the area around Madison (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.