Weather Almanac: Chicago, IL 60641

🗓️ Historical norms for October 2025

October avg. precipitation
🌧️ 3.24"
October days below freezing
📉 ≈0.2 days
Average October lows ≈49.2°F
USDA Zone
6a
Annual extreme lows -10°F to -5°F
Last Spring Frost (36°F)
🌷 Apr 30
First Fall Frost (36°F)
🍂 Oct 12
Wed. October 1  

🌅 6:48 a.m.

H: ≈68.5°F

L: ≈54.2°F

🌇 6:31 p.m.

Thu. October 2  

🌅 6:49 a.m.

H: ≈68.1°F

L: ≈53.8°F

🌇 6:30 p.m.

Fri. October 3  

🌅 6:50 a.m.

H: ≈67.8°F

L: ≈53.4°F

🌇 6:28 p.m.

Sat. October 4  

🌅 6:51 a.m.

H: ≈67.4°F

L: ≈53.0°F

🌇 6:26 p.m.

Sun. October 5  

🌅 6:52 a.m.

H: ≈67.0°F

L: ≈52.6°F

🌇 6:25 p.m.

Mon. October 6 🌕

🌅 6:53 a.m.

H: ≈66.6°F

L: ≈52.3°F

🌇 6:23 p.m.

Tue. October 7  

🌅 6:54 a.m.

H: ≈66.2°F

L: ≈51.9°F

🌇 6:21 p.m.

Wed. October 8  

🌅 6:55 a.m.

H: ≈65.8°F

L: ≈51.6°F

🌇 6:20 p.m.

Thu. October 9  

🌅 6:57 a.m.

H: ≈65.4°F

L: ≈51.2°F

🌇 6:18 p.m.

Fri. October 10  

🌅 6:58 a.m.

H: ≈65.1°F

L: ≈50.9°F

🌇 6:16 p.m.

Sat. October 11  

🌅 6:59 a.m.

H: ≈64.7°F

L: ≈50.6°F

🌇 6:15 p.m.

Sun. October 12  

🌅 7:00 a.m.

H: ≈64.3°F

L: ≈50.3°F

🌇 6:13 p.m.

Mon. October 13 Columbus Day 🌗

🌅 7:01 a.m.

H: ≈63.9°F

L: ≈50.0°F

🌇 6:12 p.m.

Tue. October 14  

🌅 7:02 a.m.

H: ≈63.6°F

L: ≈49.7°F

🌇 6:10 p.m.

Wed. October 15  

🌅 7:03 a.m.

H: ≈63.2°F

L: ≈49.4°F

🌇 6:08 p.m.

Thu. October 16  

🌅 7:04 a.m.

H: ≈62.8°F

L: ≈49.1°F

🌇 6:07 p.m.

Fri. October 17  

🌅 7:06 a.m.

H: ≈62.5°F

L: ≈48.8°F

🌇 6:05 p.m.

Sat. October 18  

🌅 7:07 a.m.

H: ≈62.1°F

L: ≈48.5°F

🌇 6:04 p.m.

Sun. October 19  

🌅 7:08 a.m.

H: ≈61.7°F

L: ≈48.2°F

🌇 6:02 p.m.

Mon. October 20  

🌅 7:09 a.m.

H: ≈61.3°F

L: ≈48.0°F

🌇 6:01 p.m.

Tue. October 21 🌑

🌅 7:10 a.m.

H: ≈61.0°F

L: ≈47.7°F

🌇 5:59 p.m.

Wed. October 22  

🌅 7:11 a.m.

H: ≈60.6°F

L: ≈47.4°F

🌇 5:58 p.m.

Thu. October 23  

🌅 7:13 a.m.

H: ≈60.2°F

L: ≈47.1°F

🌇 5:56 p.m.

Fri. October 24  

🌅 7:14 a.m.

H: ≈59.8°F

L: ≈46.8°F

🌇 5:55 p.m.

Sat. October 25  

🌅 7:15 a.m.

H: ≈59.4°F

L: ≈46.5°F

🌇 5:53 p.m.

Sun. October 26  

🌅 7:16 a.m.

H: ≈59.0°F

L: ≈46.2°F

🌇 5:52 p.m.

Mon. October 27  

🌅 7:17 a.m.

H: ≈58.6°F

L: ≈45.9°F

🌇 5:51 p.m.

Tue. October 28  

🌅 7:19 a.m.

H: ≈58.2°F

L: ≈45.6°F

🌇 5:49 p.m.

Wed. October 29 🌓

🌅 7:20 a.m.

H: ≈57.8°F

L: ≈45.2°F

🌇 5:48 p.m.

Thu. October 30  

🌅 7:21 a.m.

H: ≈57.4°F

L: ≈44.9°F

🌇 5:47 p.m.

Fri. October 31 Halloween  

🌅 7:22 a.m.

H: ≈56.9°F

L: ≈44.5°F

🌇 5:45 p.m.


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

Precipitation climatic data from weather station: CHICAGO MIDWAY AP (USW00014819)

Agricultural climatic data from weather station: CHICAGO MIDWAY AP (USW00014819)