Joliet, Illinois weather

United States · America/Chicago · 41.53, -88.08

“Use my location” asks your browser for your coordinates so we can load your local forecast and any official warnings for your area. Your coordinates are used for that request only: they are not stored on our servers, sold, or used to build a profile. If your browser blocks location, we fall back to an approximate city-level lookup from your IP address.

Joliet, Illinois 7 day forecast

A week of highs, lows, rain chances, wind, and UV for Joliet, Illinois, with a plain note about how much to trust each day.

The week at a glance

No day this week currently shows a strong rain signal.

Source updated: 9:15:20 PM · WeatherSignal checked: 9:15:20 PM

Source: Open-Meteo (national weather-service models)

Today
Partly cloudy
55° / 52°
Rain:
0% · 0.01″
Wind:
16 mph
UV:
0.9
Sun:
1:00 AM to 1:00 PM
High confidence: temperatures should be close, timing may shift by an hour or two.
Tomorrow
Clear sky
56° / 38°
Rain:
0% · 0.00″
Wind:
14 mph
UV:
4.1
Sun:
1:00 AM to 1:00 PM
High confidence: temperatures should be close, timing may shift by an hour or two.
Sunday, Oct 18
Clear sky
62° / 42°
Rain:
0% · 0.00″
Wind:
12 mph
UV:
4.3
Sun:
1:00 AM to 1:00 PM
Moderate confidence: the pattern is reliable, the details are not settled.
Monday, Oct 19
Clear sky
62° / 42°
Rain:
0% · 0.00″
Wind:
8 mph
UV:
0.0
Sun:
1:00 AM to 1:00 PM
Moderate confidence: the pattern is reliable, the details are not settled.
Tuesday, Oct 20
Clear sky
65° / 42°
Rain:
0% · 0.00″
Wind:
5 mph
UV:
0.0
Sun:
1:00 AM to 1:00 PM
Lower confidence: a long range outlook, useful for planning direction, not for exact numbers.
Wednesday, Oct 21
Clear sky
64° / 44°
Rain:
0% · 0.00″
Wind:
6 mph
UV:
0.0
Sun:
1:00 AM to 1:00 PM
Lower confidence: a long range outlook, useful for planning direction, not for exact numbers.
Thursday, Oct 22
Clear sky
67° / 46°
Rain:
0% · 0.00″
Wind:
5 mph
UV:
0.0
Sun:
1:00 AM to 1:00 PM
Lower confidence: a long range outlook, useful for planning direction, not for exact numbers.

Forecast confidence drops the further out you look. Use days five through seven to decide whether to keep a plan flexible, not to schedule around an exact hour.

Planning your week in Joliet, Illinois

The warmest afternoon ahead is Thursday, reaching about 67°F.
The coldest night ahead dips to about 38°F.
This is a dry stretch — most days show rain chances under 20%, good for outdoor plans.
The breeziest day looks like today, with sustained wind near 16 mph.

Common questions about Joliet, Illinois weather

How accurate is the Joliet, Illinois forecast?: The next 48 hours are usually reliable on temperature and sky cover, with timing that can shift by an hour or two. Days three and four are dependable for the overall pattern. Beyond that, treat the numbers as a planning direction rather than a promise — we label confidence on every day so you can judge for yourself.
What is the best day this week in Joliet, Illinois?: No day in the current outlook has a rain chance above 40%, so conditions look favorable for outdoor plans across the week.
Where does this forecast come from?: Forecast values come from national weather model data, and official warnings come from the National Weather Service. We show the source and the last-updated time on every page, and we never invent a number the source did not publish — missing measurements are hidden, not guessed.
How often is this page updated?: The forecast refreshes whenever the source model publishes new data, typically several times a day. The freshness note near the top of the page shows exactly when the numbers you are looking at were issued.

More weather for Joliet, Illinois

Weather in nearby cities

Naperville, IL weather · about 16 miles away
Aurora, IL weather · about 20 miles away
Chicago, IL weather · about 34 miles away
Elgin, IL weather · about 37 miles away
Rockford, IL weather · about 73 miles away
Kenosha, WI weather · about 74 miles away