Illinois מזג אוויר תחזית
Illinois weather: 16°C, בהיר. לפי שעה forecast, 14-day outlook, UV, air quality and the best time ל- visit.
Illinois weather in יולי
A good month ל- visit Illinois.
יולי runs 12°C warmer than the annual average in Illinois.
מזג אוויר map for Illinois
Animated model layers. Pick a layer ל- load it.
Animated layers by רוחy. For pin-level detail and nearby places, see the interactive map below.
אקלים in Illinois month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| חודש | Avg high | Avg low | גשםfall | Rating |
|---|---|---|---|---|
| ינואר | 1° | -7° | 62 mm | ★★☆☆☆ |
| פברואר | 8° | -3° | 20 mm | ★★★☆☆ |
| מרץ | 15° | 4° | 90 mm | ★★★☆☆ |
| אפריל | 19° | 9° | 135 mm | ★★★☆☆ |
| מאי | 24° | 13° | 100 mm | ★★★★☆ |
| יוני | 28° | 19° | 117 mm | ★★★★☆ |
| יולי | 29° | 21° | 129 mm | ★★★★☆ |
| אוגוסט | 29° | 19° | 75 mm | ★★★★☆ |
| ספטמבר | 28° | 17° | 33 mm | ★★★★★ |
| אוקטובר | 20° | 10° | 37 mm | ★★★★☆ |
| נובמבר | 12° | 4° | 79 mm | ★★★☆☆ |
| דצמבר | 6° | -2° | 62 mm | ★★☆☆☆ |
אקלים type: יבשתal. מקור: Open-Meteo archive (ERA5).
הזמן הטוב ביותר לביקור Illinois
Go in אוגוסט, ספטמבר and אוקטובר. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: ינואר, פברואר and דצמבר - expect the least comfortable mix of heat, cold or rain.
What ל- pack, what ל- skip
- א׳glasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 18°C, so mornings feel nothing like afternoons
- If your dates are flexible, avoid ינואר, פברואר and דצמבר - historically the least comfortable months here.
How Illinois compares עם nearby places
Annual averages, and the difference against Illinois.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Gateway Arch National Park | 137 km | 15°C | +1°C warmer | 1156 mm |
| St. Louis | 137 km | 15°C | +1°C warmer | 1156 mm |
| Missouri | 255 km | 15°C | +1°C warmer | 1006 mm |
| Indianapolis | 298 km | 13°C | 1°C cooler | 1135 mm |
| Indiana | 298 km | 13°C | 1°C cooler | 1135 mm |
הצג תחזית עבור Illinois לפי טווח זמן
Illinois weather - more answers
Explore Illinois
Every topic we hold for this place, and the same topic for the places around it.
מזג אוויר for related places
Frequently asked questions
Where is Illinois?
Illinois is a state in ארצות הברית. Its coordinates are 39.7817, -89.6501. It lies in צפון אמריקה.
What is the weather like in Illinois עכשיו?
It is currently 16°C (61°F) עם בהיר. לחות is 56% and wind is 6 km/h.
When is the best time ל- visit Illinois?
אוגוסט, ספטמבר and אוקטובר offer the most comfortable conditions in Illinois, which has a continental climate. ינואר, פברואר and דצמבר 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 12:17 AM.
How many people live in Illinois?
Illinois has a population of approximately 12.6 million.
What is the nearest airport ל- 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 ל- 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. |
|---|---|
| תחזית and observations | Open-Meteo (ECMWF and national models). |
| איכות האוויר and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| אקלים averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National מזג אוויר 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 אוקטובר 27, 2026 at 12:17 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
