Weather Almanac: Berwyn, IL 60402

🗓️ Historical norms for September 2025

September avg. precipitation
🌧️ 3.31"
September days below freezing
📉 ≈0.0 days
Average September lows 55°F – 60°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
Mon. September 1 Labor Day  

🌅 6:17 a.m.

H: 73°F – 87°F

L: 57°F – 70°F

🌇 7:23 p.m.

Tue. September 2  

🌅 6:18 a.m.

H: 73°F – 87°F

L: 57°F – 69°F

🌇 7:22 p.m.

Wed. September 3  

🌅 6:19 a.m.

H: 72°F – 87°F

L: 57°F – 69°F

🌇 7:20 p.m.

Thu. September 4  

🌅 6:20 a.m.

H: 72°F – 87°F

L: 56°F – 69°F

🌇 7:18 p.m.

Fri. September 5  

🌅 6:21 a.m.

H: 72°F – 87°F

L: 56°F – 68°F

🌇 7:17 p.m.

Sat. September 6  

🌅 6:22 a.m.

H: 71°F – 86°F

L: 55°F – 68°F

🌇 7:15 p.m.

Sun. September 7 🌕

🌅 6:23 a.m.

H: 71°F – 86°F

L: 55°F – 68°F

🌇 7:13 p.m.

Mon. September 8  

🌅 6:24 a.m.

H: 71°F – 86°F

L: 54°F – 67°F

🌇 7:12 p.m.

Tue. September 9  

🌅 6:25 a.m.

H: 70°F – 86°F

L: 54°F – 67°F

🌇 7:10 p.m.

Wed. September 10  

🌅 6:26 a.m.

H: 70°F – 85°F

L: 54°F – 67°F

🌇 7:08 p.m.

Thu. September 11  

🌅 6:27 a.m.

H: 70°F – 85°F

L: 53°F – 66°F

🌇 7:06 p.m.

Fri. September 12  

🌅 6:28 a.m.

H: 69°F – 85°F

L: 53°F – 66°F

🌇 7:05 p.m.

Sat. September 13  

🌅 6:29 a.m.

H: 69°F – 85°F

L: 52°F – 66°F

🌇 7:03 p.m.

Sun. September 14 Holy Cross 🌗

🌅 6:30 a.m.

H: 68°F – 84°F

L: 52°F – 65°F

🌇 7:01 p.m.

Mon. September 15  

🌅 6:31 a.m.

H: 68°F – 84°F

L: 51°F – 65°F

🌇 6:59 p.m.

Tue. September 16  

🌅 6:32 a.m.

H: 67°F – 84°F

L: 50°F – 64°F

🌇 6:58 p.m.

Wed. September 17  

🌅 6:33 a.m.

H: 67°F – 83°F

L: 50°F – 64°F

🌇 6:56 p.m.

Thu. September 18  

🌅 6:34 a.m.

H: 66°F – 83°F

L: 49°F – 64°F

🌇 6:54 p.m.

Fri. September 19  

🌅 6:35 a.m.

H: 66°F – 83°F

L: 49°F – 63°F

🌇 6:52 p.m.

Sat. September 20  

🌅 6:36 a.m.

H: 65°F – 82°F

L: 48°F – 63°F

🌇 6:51 p.m.

Sun. September 21 🌑

🌅 6:37 a.m.

H: 65°F – 82°F

L: 48°F – 62°F

🌇 6:49 p.m.

Mon. September 22 Autumn Equinox  

🌅 6:38 a.m.

H: 64°F – 82°F

L: 47°F – 62°F

🌇 6:47 p.m.

Tue. September 23  

🌅 6:40 a.m.

H: 64°F – 81°F

L: 47°F – 62°F

🌇 6:46 p.m.

Wed. September 24  

🌅 6:41 a.m.

H: 63°F – 81°F

L: 46°F – 61°F

🌇 6:44 p.m.

Thu. September 25  

🌅 6:42 a.m.

H: 63°F – 81°F

L: 46°F – 61°F

🌇 6:42 p.m.

Fri. September 26  

🌅 6:43 a.m.

H: 62°F – 80°F

L: 45°F – 60°F

🌇 6:40 p.m.

Sat. September 27  

🌅 6:44 a.m.

H: 62°F – 80°F

L: 45°F – 60°F

🌇 6:39 p.m.

Sun. September 28  

🌅 6:45 a.m.

H: 61°F – 79°F

L: 44°F – 60°F

🌇 6:37 p.m.

Mon. September 29 🌓

🌅 6:46 a.m.

H: 61°F – 79°F

L: 44°F – 59°F

🌇 6:35 p.m.

Tue. September 30  

🌅 6:47 a.m.

H: 60°F – 79°F

L: 43°F – 59°F

🌇 6:33 p.m.


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

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

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