Capitol Square, Madison Weather
Hourly forecast in Capitol Square
16-day forecast for Capitol Square
Check any date
Capitol Square air quality & conditions
Air quality index
Today's outlook for Capitol Square
Loading today's outlook…
Explore nearby
Weather articles
Weather news
Climate of Capitol Square: monthly averages
Based on 25 years of satellite and reanalysis data (2001-2025), July is usually the hottest month in Capitol Square, with average daytime highs around 28°C. January is the coolest, when nights typically fall to about -12°C and frost is possible on the coldest nights. That is a wide yearly range of roughly 40°C, so the seasons feel very different from each other.
The area receives about 970 mm of rain in a typical year. Most of it falls from May to August, and June is the wettest month at roughly 134 mm.
For outdoor plans and travel, September usually offers the most comfortable weather in Capitol Square, with mild days and relatively little rain.
| Month | Avg high | Avg low | Rainfall | Humidity |
|---|---|---|---|---|
| Jan | -3° | -12° | 36 mm | 89% |
| Feb | -1° | -11° | 41 mm | 87% |
| Mar | 6° | -4° | 59 mm | 81% |
| Apr | 14° | 2° | 98 mm | 77% |
| May | 20° | 8° | 109 mm | 77% |
| Jun | 25° | 15° | 134 mm | 77% |
| Jul | 28° | 17° | 102 mm | 75% |
| Aug | 27° | 16° | 111 mm | 74% |
| Sep | 23° | 11° | 93 mm | 76% |
| Oct | 15° | 4° | 80 mm | 78% |
| Nov | 7° | -2° | 56 mm | 82% |
| Dec | -1° | -9° | 51 mm | 89% |
Source: NASA POWER (MERRA-2 reanalysis), averaged over the roughly 50 km grid area around Capitol Square. Values describe typical conditions, not a forecast.
About Capitol Square weather
Capitol Square is a place in Wisconsin's humid continental climate, with cold winters shaped by its Great Lakes location, located about 122 km west of Milwaukee. Capitol Square gets warm summers (June–August) with highs in the high 20s°C each year. Capitol Square closes out the year with cold, snowy winters (December–February) with lake-effect snow near Lake Michigan. This page shows live, auto-refreshing weather for Capitol Square: current conditions, an hourly breakdown, a 16-day outlook, a date-lookup tool for any past or future date, and real-time air quality, sourced from Open-Meteo. Local timezone: America/Chicago.
Frequently asked questions
Capitol Square is about 122 km west of Milwaukee, in Wisconsin.
Capitol Square sees cold, snowy winters (December–February) with lake-effect snow near Lake Michigan.
The live current conditions, hourly forecast and 16-day outlook above are pulled in real time for Capitol Square's exact coordinates. No fixed schedule, the page updates whenever you load it.
July is usually the hottest month in Capitol Square, with average daytime highs of about 28°C and nights around 17°C.
The coldest nights come in January, when the average low is about -12°C and daytime highs reach around -3°C. Frost is possible on clear, calm nights.
Capitol Square receives about 970 mm of rain in a typical year. June is the wettest month at roughly 134 mm, and the main rainy period is May to August.
September usually offers the most comfortable weather in Capitol Square, with mild daytime temperatures and little rain.
In November Capitol Square typically sees daytime highs near 7°C and lows near -2°C, with about 56 mm of rain over the month and average humidity around 82%. Check the live forecast above for this week's actual conditions.
Up to 16 days ahead using the extended forecast and date picker above; further-out or historical dates use the same date lookup tool.
The current temperature for Capitol Square updates automatically at the top of this page — scroll to the hourly strip below to see how it's expected to change over the day.
Capitol Square's day-to-day weather follows the broader pattern of Wisconsin described above. See the hourly weather forecast or the air quality index for more detail.