Weather Almanac: Chicago, IL 60608

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 3.13"
September days below freezing
📉 ≈0.0 days
Average September lows ≈61.1°F
USDA Zone
6a
Annual extreme lows -10°F to -5°F
Last Spring Frost (36°F)
🌷 Apr 29
First Fall Frost (36°F)
🍂 Oct 17
Mon. September 1 Labor Day  

🌅 6:16 a.m.

H: ≈79.2°F

L: ≈66.7°F

🌇 7:23 p.m.

Tue. September 2  

🌅 6:17 a.m.

H: ≈78.9°F

L: ≈66.5°F

🌇 7:21 p.m.

Wed. September 3  

🌅 6:18 a.m.

H: ≈78.7°F

L: ≈66.2°F

🌇 7:20 p.m.

Thu. September 4  

🌅 6:19 a.m.

H: ≈78.4°F

L: ≈65.9°F

🌇 7:18 p.m.

Fri. September 5  

🌅 6:20 a.m.

H: ≈78.2°F

L: ≈65.6°F

🌇 7:16 p.m.

Sat. September 6  

🌅 6:21 a.m.

H: ≈77.9°F

L: ≈65.2°F

🌇 7:15 p.m.

Sun. September 7 🌕

🌅 6:23 a.m.

H: ≈77.6°F

L: ≈64.9°F

🌇 7:13 p.m.

Mon. September 8  

🌅 6:24 a.m.

H: ≈77.3°F

L: ≈64.5°F

🌇 7:11 p.m.

Tue. September 9  

🌅 6:25 a.m.

H: ≈77.0°F

L: ≈64.1°F

🌇 7:09 p.m.

Wed. September 10  

🌅 6:26 a.m.

H: ≈76.7°F

L: ≈63.7°F

🌇 7:08 p.m.

Thu. September 11  

🌅 6:27 a.m.

H: ≈76.3°F

L: ≈63.3°F

🌇 7:06 p.m.

Fri. September 12  

🌅 6:28 a.m.

H: ≈76.0°F

L: ≈62.9°F

🌇 7:04 p.m.

Sat. September 13  

🌅 6:29 a.m.

H: ≈75.7°F

L: ≈62.5°F

🌇 7:02 p.m.

Sun. September 14 Holy Cross 🌗

🌅 6:30 a.m.

H: ≈75.3°F

L: ≈62.0°F

🌇 7:01 p.m.

Mon. September 15  

🌅 6:31 a.m.

H: ≈74.9°F

L: ≈61.6°F

🌇 6:59 p.m.

Tue. September 16  

🌅 6:32 a.m.

H: ≈74.6°F

L: ≈61.1°F

🌇 6:57 p.m.

Wed. September 17  

🌅 6:33 a.m.

H: ≈74.2°F

L: ≈60.6°F

🌇 6:56 p.m.

Thu. September 18  

🌅 6:34 a.m.

H: ≈73.8°F

L: ≈60.2°F

🌇 6:54 p.m.

Fri. September 19  

🌅 6:35 a.m.

H: ≈73.4°F

L: ≈59.7°F

🌇 6:52 p.m.

Sat. September 20  

🌅 6:36 a.m.

H: ≈73.0°F

L: ≈59.2°F

🌇 6:50 p.m.

Sun. September 21 🌑

🌅 6:37 a.m.

H: ≈72.6°F

L: ≈58.7°F

🌇 6:49 p.m.

Mon. September 22 Autumn Equinox  

🌅 6:38 a.m.

H: ≈72.2°F

L: ≈58.3°F

🌇 6:47 p.m.

Tue. September 23  

🌅 6:39 a.m.

H: ≈71.8°F

L: ≈57.8°F

🌇 6:45 p.m.

Wed. September 24  

🌅 6:40 a.m.

H: ≈71.4°F

L: ≈57.3°F

🌇 6:43 p.m.

Thu. September 25  

🌅 6:41 a.m.

H: ≈71.0°F

L: ≈56.9°F

🌇 6:42 p.m.

Fri. September 26  

🌅 6:42 a.m.

H: ≈70.6°F

L: ≈56.4°F

🌇 6:40 p.m.

Sat. September 27  

🌅 6:43 a.m.

H: ≈70.2°F

L: ≈55.9°F

🌇 6:38 p.m.

Sun. September 28  

🌅 6:44 a.m.

H: ≈69.8°F

L: ≈55.5°F

🌇 6:36 p.m.

Mon. September 29 🌓

🌅 6:45 a.m.

H: ≈69.4°F

L: ≈55.1°F

🌇 6:35 p.m.

Tue. September 30  

🌅 6:46 a.m.

H: ≈69.0°F

L: ≈54.6°F

🌇 6:33 p.m.


Temperature climatic data from weather station: CHICAGO NORTHERLY IS (USC00111550)

Precipitation climatic data from weather station: CHICAGO UNIV (USW00014892)

Agricultural climatic data from weather station: CHICAGO UNIV (USW00014892)