Chicago, IL 14-Day Forecast
Illinois, United States 🇺🇸
67°
Overcast right now
Today: high 72°, low 63°
Updated 16 min ago
Chicago weather for the next 14 days
Thursday, September 17
Light rain shower High 82° Low 65°Precipitation
75%
· 0.11 in
Max wind
8 mph
Humidity
83%
UV index
4 - Moderate
Sunrise / sunset
06:32 AM / 06:57 PM
Friday, September 18
Light rain shower High 76° Low 66°Precipitation
85%
· 0.31 in
Max wind
8 mph
Humidity
84%
UV index
5 - Moderate
Sunrise / sunset
06:34 AM / 06:55 PM
Saturday, September 19
Light rain shower High 75° Low 69°Precipitation
88%
· 0.22 in
Max wind
8 mph
Humidity
93%
UV index
2 - Low
Sunrise / sunset
06:35 AM / 06:53 PM
Sunday, September 20
Light rain shower High 83° Low 66°Precipitation
90%
· 0.83 in
Max wind
8 mph
Humidity
89%
UV index
6 - High
Sunrise / sunset
06:36 AM / 06:52 PM
Monday, September 21
Patchy rain nearby High 76° Low 68°Precipitation
75%
· 0.06 in
Max wind
7 mph
Humidity
87%
UV index
5 - Moderate
Sunrise / sunset
06:37 AM / 06:50 PM
Tuesday, September 22
Patchy rain nearby High 75° Low 65°Precipitation
17%
· 0.0 in
Max wind
10 mph
Humidity
71%
UV index
6 - High
Sunrise / sunset
06:38 AM / 06:48 PM
Wednesday, September 23
Sunny High 80° Low 60°Precipitation
17%
· 0.0 in
Max wind
12 mph
Humidity
61%
UV index
7 - High
Sunrise / sunset
06:39 AM / 06:46 PM
Thursday, September 24
Patchy rain nearby High 69° Low 57°Precipitation
68%
· 0.08 in
Max wind
14 mph
Humidity
75%
UV index
4 - Moderate
Sunrise / sunset
06:40 AM / 06:45 PM
Friday, September 25
Sunny High 70° Low 52°Precipitation
4%
· 0.0 in
Max wind
11 mph
Humidity
63%
UV index
6 - High
Sunrise / sunset
06:41 AM / 06:43 PM
Saturday, September 26
Sunny High 75° Low 56°Precipitation
5%
· 0.0 in
Max wind
6 mph
Humidity
60%
UV index
6 - High
Sunrise / sunset
06:42 AM / 06:41 PM
Sunday, September 27
Overcast High 78° Low 61°Precipitation
6%
· 0.0 in
Max wind
10 mph
Humidity
54%
UV index
6 - High
Sunrise / sunset
06:43 AM / 06:39 PM
Monday, September 28
Sunny High 86° Low 66°Precipitation
3%
· 0.0 in
Max wind
9 mph
Humidity
53%
UV index
7 - High
Sunrise / sunset
06:44 AM / 06:38 PM
Tuesday, September 29
Overcast High 77° Low 65°Precipitation
67%
· 0.08 in
Max wind
10 mph
Humidity
71%
UV index
5 - Moderate
Sunrise / sunset
06:45 AM / 06:36 PM
Chicago 14-day outlook: the story
The warmest day of Chicago's 14-day outlook is Monday, September 28 with a high near 86°F (30°C); the coolest night comes Friday, September 25, dipping to 52°F (11°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 77°F (25°C), right in line with the typical September high of 75°F (24°C).
Precipitation is most likely on Wednesday 16, Thursday 17, Friday 18, Saturday 19 and beyond; the wettest day looks like Sunday, September 20 with about 0.83 in (21.1 mm) expected. For the weekend, expect Saturday 75°F (24°C) and light rain shower / Sunday 83°F (28°C) and light rain shower.
For typical conditions month by month, see the Chicago climate & average temperatures guide.
Chicago forecast questions
Will it rain in Chicago this week?
The forecast currently shows meaningful precipitation chances on 8 of the next 14 days, peaking around Sunday, September 20.
What will be the warmest day in Chicago over the next 14 days?
Monday, September 28, with a forecast high near 86°F (30°C).
How accurate is a 14-day forecast for Chicago?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Chicago by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 32° | 20° | 10 | 2.6 in | 4.9 h/day | 76% |
| February | 36° | 20° | 9 | 2.4 in | 6.8 h/day | 73% |
| March | 45° | 31° | 11 | 3.5 in | 7.9 h/day | 74% |
| April | 54° | 39° | 14 | 4.2 in | 8.8 h/day | 73% |
| May | 66° | 50° | 13 | 5.3 in | 10.1 h/day | 76% |
| June | 77° | 61° | 12 | 4.5 in | 11.6 h/day | 73% |
| July | 80° | 67° | 12 | 6.0 in | 11.8 h/day | 77% |
| August | 80° | 66° | 12 | 4.2 in | 11.5 h/day | 76% |
| September | 75° | 62° | 10 | 3.8 in | 9.6 h/day | 74% |
| October | 62° | 49° | 12 | 4.8 in | 7.5 h/day | 72% |
| November | 48° | 36° | 8 | 2.5 in | 6.0 h/day | 73% |
| December | 39° | 28° | 9 | 2.6 in | 5.0 h/day | 75% |