Illinois Väder Prognos
Illinois weather: 23°C, mulet. Varje timme forecast, 14-day outlook, UV, air quality and the best time och visit.
Sammanfattning
Illinois is a state in USA. Illinois is a US state med huvudstad Springfield. Befolkningen är cirka 12.6 million. Huvudstaden är Springfield.
Just nu är det 23°C (73°F) in Illinois med mulet. Det känns som 24°C. I dag varierar temperaturen mellan 19°C och 28°C. Risken för nederbörd är 18%. Sightseeing conditions score 9.2/10 - utmärkt — åk nu.
Bästa tiden att besöka Illinois is augusti, september and oktober. Klimatet är continental. januari, februari and december tend och be the least comfortable months. juli is the warmest month med average highs near 29°C, while januari is the coldest med lows near -7°C.
The closest major airport is O'Hare International Airport (ORD), about 284 km away. Nearby highlights include Starved Rock State Park, Lake Michigan, Gateway Arch National Park and Indiana Dunes National Park.
Enkelt förklarat. Today is about average for september. The forecast high of 28°C is in line med the 28°C typical for this month. The best window och be outside is roughly 7 AM och 10 AM, when temperature, rain chance and wind line up best. fishing is the strongest bet in Illinois today at 9.4/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Vädret i Illinois just nu
Open-Meteo Updated 8:24 PM, sep 30 local time.
Se prognosen för Illinois per tidsintervall
Nästa 24 timmar
Temperatur, nederbörd och vind timme för timme.
16-day forecast for Illinois
Max / Min; Nederb.; UV
| Dag | Förhållanden | Max / Min | Nederb. | Vind | UV |
|---|---|---|---|---|---|
| ons, sep 30 | ☁️ Mulet | 28° / 19° | 18% | 12 km/h | 2 |
| tor, okt 1 | 🌧️ Heavy rain | 30° / 19° | 61% · 21 mm | 29 km/h | 2 |
| fre, okt 2 | 🌧️ Heavy drizzle | 21° / 12° | 66% · 2 mm | 22 km/h | 5 |
| lör, okt 3 | ☀️ Klart | 23° / 9° | 1% | 14 km/h | 5 |
| sön, okt 4 | ☀️ Klart | 23° / 12° | 1% | 18 km/h | 5 |
| mån, okt 5 | ☀️ Klart | 20° / 9° | 0% | 15 km/h | 5 |
| tis, okt 6 | 🌤️ Mest klart | 20° / 6° | 0% | 14 km/h | 5 |
| ons, okt 7 | 🌦️ Light drizzle | 24° / 11° | 2% · 1 mm | 21 km/h | 4 |
| tor, okt 8 | ☀️ Klart | 23° / 9° | 2% | 12 km/h | 5 |
| fre, okt 9 | ☁️ Mulet | 27° / 11° | 1% | 18 km/h | 5 |
| lör, okt 10 | ☁️ Mulet | 29° / 15° | 4% | 27 km/h | 5 |
| sön, okt 11 | 🌧️ Regn | 21° / 15° | 16% · 19 mm | 19 km/h | 0 |
| mån, okt 12 | 🌦️ Light drizzle | 17° / 12° | 17% · 0 mm | 23 km/h | 3 |
| tis, okt 13 | 🌦️ Light drizzle | 18° / 11° | 3% · 1 mm | 10 km/h | 5 |
| ons, okt 14 | ☁️ Mulet | 23° / 10° | 10% | 15 km/h | 5 |
| tor, okt 15 | 🌦️ Light showers | 16° / 6° | 11% · 16 mm | 36 km/h | 0 |
Klimat in Illinois month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Månad | Avg high | Avg low | Regnfall | Rating |
|---|---|---|---|---|
| januari | 1° | -7° | 62 mm | ★★☆☆☆ |
| februari | 8° | -3° | 20 mm | ★★★☆☆ |
| mars | 15° | 4° | 90 mm | ★★★☆☆ |
| april | 19° | 9° | 135 mm | ★★★☆☆ |
| maj | 24° | 13° | 100 mm | ★★★★☆ |
| juni | 28° | 19° | 117 mm | ★★★★☆ |
| juli | 29° | 21° | 129 mm | ★★★★☆ |
| augusti | 29° | 19° | 75 mm | ★★★★☆ |
| september | 28° | 17° | 33 mm | ★★★★★ |
| oktober | 20° | 10° | 37 mm | ★★★★☆ |
| november | 12° | 4° | 79 mm | ★★★☆☆ |
| december | 6° | -2° | 62 mm | ★★☆☆☆ |
Klimat type: Kontinental. Källa: Open-Meteo archive (ERA5).
Väder map for Illinois
Animated model layers. Pick a layer och load it.
Animated layers by Vindy. For pin-level detail and nearby places, see the interactive map below.
Luftkvalitet and pollen in Illinois
Luftkvalitet: Open-Meteo (CAMS). US AQI scale.
sön, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Bästa tiden att besöka Illinois
Go in augusti, september and oktober. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: januari, februari and december - expect the least comfortable mix of heat, cold or rain.
Väder by city in Illinois
1 cities mapped in this atlas
Väder by state park in Illinois
1 state and provincial parks mapped in this atlas
Väder by county in Illinois
1 counties mapped in this atlas
Väder by lake in Illinois
1 lakes mapped in this atlas
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
Väder for related places
Frequently asked questions
Where is Illinois?
Illinois is a state in USA. Its coordinates are 39.7817, -89.6501. It lies in Nordamerika.
What is the weather like in Illinois just nu?
It is currently 23°C (73°F) med mulet. Luftfuktighet is 65% and wind is 10 km/h.
When is the best time och visit Illinois?
augusti, september and oktober offer the most comfortable conditions in Illinois, which has a continental climate. januari, februari and december 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 8:24 PM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport och 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 och 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. |
|---|---|
| Prognos and observations | Open-Meteo (ECMWF and national models). |
| Luftkvalitet and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Klimat averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Väder 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 september 30, 2026 at 8:24 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
