Illinois Počasí Předpověď
Illinois weather: 20°C, jasno. Po hodinách forecast, 14-day outlook, UV, air quality and the best time do visit.
Will it rain in Illinois?
No - rain is unlikely in Illinois today.
Déšť is very unlikely today - plans do not need a backup.
Over the next 7 days, about 14 mm of precipitation is forecast.
Déšťfall over the next 7 days is close do normal for srpen (14 mm against a typical 11 mm).
16-day forecast for Illinois
Max. / Min.; Srážky; UV
| Den | Podmínky | Max. / Min. | Srážky | Vítr | UV |
|---|---|---|---|---|---|
| po, srp 24 | ☁️ Zataženo | 27° / 12° | 6% | 10 km/h | 7 |
| út, srp 25 | ☁️ Zataženo | 29° / 15° | 1% | 13 km/h | 7 |
| st, srp 26 | ⛈️ Violent showers | 32° / 18° | 26% · 13 mm | 25 km/h | 7 |
| čt, srp 27 | ☀️ Jasná obloha | 30° / 18° | 26% | 14 km/h | 7 |
| pá, srp 28 | ☁️ Zataženo | 29° / 17° | 1% | 12 km/h | 7 |
| so, srp 29 | ☁️ Zataženo | 28° / 17° | 3% | 16 km/h | 5 |
| ne, srp 30 | 🌦️ Light drizzle | 35° / 21° | 6% · 0 mm | 28 km/h | 7 |
| po, srp 31 | 🌦️ Light showers | 35° / 21° | 12% · 13 mm | 22 km/h | 6 |
| út, zář 1 | 🌤️ Většinou jasno | 38° / 25° | 17% | 23 km/h | 7 |
| st, zář 2 | ⛅ Polojasno | 40° / 27° | 14% | 23 km/h | 7 |
| čt, zář 3 | ⛈️ Violent showers | 39° / 20° | 16% · 37 mm | 23 km/h | 7 |
| pá, zář 4 | 🌦️ Light drizzle | 27° / 21° | 13% · 1 mm | 14 km/h | 2 |
| so, zář 5 | 🌦️ Mrholení | 32° / 20° | 16% · 3 mm | 12 km/h | 6 |
| ne, zář 6 | 🌦️ Light showers | 33° / 21° | 22% · 7 mm | 17 km/h | 7 |
| po, zář 7 | 🌦️ Light showers | 27° / 15° | 32% · 5 mm | 14 km/h | 7 |
| út, zář 8 | ☁️ Zataženo | 30° / 15° | 21% | 16 km/h | 7 |
What this means for Illinois
Today is slightly cooler than average for srpen. The forecast high of 27°C is 1.5°C below the 28°C typical for this month.
Déšť is very unlikely today - plans do not need a backup.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in červen do srpen.
The gap between the warmest and coldest month averages 29°C.
What do pack, what do skip
- Lightweight, light-coloured clothing and a refillable water bottle
- neglasses, a brimmed hat and SPF 30+
- If your dates are flexible, avoid leden, únor and prosinec - historically the least comfortable months here.
Zobrazit předpověď pro Illinois podle časového období
Illinois weather - more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
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Frequently asked questions
Where is Illinois?
Illinois is a state in Spojené státy. Its coordinates are 39.7817, -89.6501. It lies in Severní Amerika.
What is the weather like in Illinois právě teď?
It is currently 20°C (68°F) s jasno. Vlhkost is 71% and wind is 5 km/h.
When is the best time do visit Illinois?
srpen, září and říjen offer the most comfortable conditions in Illinois, which has a continental climate. leden, únor and prosinec are usually the hardest months for outdoor plans.
What time zone is Illinois in?
Illinois observes America/Chicago (UTC-05:00). The local time is 10:48 PM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport do Illinois?
The closest airports are O'Hare International Airport (ORD), 284 km away and Nashville International Airport (BNA), 483 km away.
What are the top things do do in Illinois?
Popular options include Starved Rock State Park, Lake Michigan, Gateway Arch National Park and Indiana Dunes National Park.
What places are in Illinois?
Illinois covers 4 places in this atlas, including Chicago, Starved Rock State Park, Cook County and Lake Michigan.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-states) - coordinates, hierarchy and facts. |
|---|---|
| Předpověď and observations | Open-Meteo (ECMWF and national models). |
| Kvalita ovzduší and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klima averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Počasí Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated srpen 24, 2026 at 10:48 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
