Weather Almanac: Copper Harbor, MI 49918

🗓️ Historical norms for September 2026

September avg. precipitation
🌧️ 3.32"
September days below freezing
📉 ≈0.1 days
Average September lows 48°F – 53°F
USDA Zone
6a
Annual extreme lows -10°F to -5°F
Last Spring Frost (36°F)
🌷 Jun 10
First Fall Frost (36°F)
🍂 Sep 27
Tue. September 1  

🌅 7:10 a.m.

H: 64°F – 79°F

L: 49°F – 61°F

🌇 8:31 p.m.

Wed. September 2  

🌅 7:11 a.m.

H: 64°F – 79°F

L: 49°F – 61°F

🌇 8:29 p.m.

Thu. September 3  

🌅 7:12 a.m.

H: 63°F – 78°F

L: 48°F – 61°F

🌇 8:27 p.m.

Fri. September 4  

🌅 7:14 a.m.

H: 63°F – 78°F

L: 48°F – 61°F

🌇 8:25 p.m.

Sat. September 5  

🌅 7:15 a.m.

H: 63°F – 78°F

L: 48°F – 60°F

🌇 8:23 p.m.

Sun. September 6  

🌅 7:16 a.m.

H: 62°F – 78°F

L: 47°F – 60°F

🌇 8:21 p.m.

Mon. September 7 Labor Day  

🌅 7:18 a.m.

H: 62°F – 77°F

L: 47°F – 60°F

🌇 8:19 p.m.

Tue. September 8  

🌅 7:19 a.m.

H: 62°F – 77°F

L: 47°F – 60°F

🌇 8:17 p.m.

Wed. September 9  

🌅 7:20 a.m.

H: 61°F – 77°F

L: 46°F – 59°F

🌇 8:15 p.m.

Thu. September 10  

🌅 7:22 a.m.

H: 61°F – 76°F

L: 46°F – 59°F

🌇 8:13 p.m.

Fri. September 11  

🌅 7:23 a.m.

H: 60°F – 76°F

L: 46°F – 59°F

🌇 8:11 p.m.

Sat. September 12  

🌅 7:24 a.m.

H: 60°F – 76°F

L: 45°F – 59°F

🌇 8:09 p.m.

Sun. September 13  

🌅 7:26 a.m.

H: 59°F – 75°F

L: 45°F – 58°F

🌇 8:07 p.m.

Mon. September 14 Holy Cross  

🌅 7:27 a.m.

H: 59°F – 75°F

L: 45°F – 58°F

🌇 8:05 p.m.

Tue. September 15  

🌅 7:28 a.m.

H: 59°F – 75°F

L: 44°F – 58°F

🌇 8:03 p.m.

Wed. September 16  

🌅 7:30 a.m.

H: 58°F – 74°F

L: 44°F – 57°F

🌇 8:00 p.m.

Thu. September 17  

🌅 7:31 a.m.

H: 58°F – 74°F

L: 44°F – 57°F

🌇 7:58 p.m.

Fri. September 18  

🌅 7:32 a.m.

H: 57°F – 73°F

L: 43°F – 57°F

🌇 7:56 p.m.

Sat. September 19  

🌅 7:34 a.m.

H: 57°F – 73°F

L: 43°F – 56°F

🌇 7:54 p.m.

Sun. September 20  

🌅 7:35 a.m.

H: 56°F – 73°F

L: 42°F – 56°F

🌇 7:52 p.m.

Mon. September 21  

🌅 7:36 a.m.

H: 56°F – 72°F

L: 42°F – 55°F

🌇 7:50 p.m.

Tue. September 22 Autumn Equinox  

🌅 7:38 a.m.

H: 55°F – 72°F

L: 42°F – 55°F

🌇 7:48 p.m.

Wed. September 23  

🌅 7:39 a.m.

H: 55°F – 71°F

L: 41°F – 55°F

🌇 7:46 p.m.

Thu. September 24  

🌅 7:40 a.m.

H: 54°F – 71°F

L: 41°F – 54°F

🌇 7:44 p.m.

Fri. September 25  

🌅 7:42 a.m.

H: 54°F – 70°F

L: 40°F – 54°F

🌇 7:42 p.m.

Sat. September 26 🌕

🌅 7:43 a.m.

H: 53°F – 70°F

L: 40°F – 54°F

🌇 7:40 p.m.

Sun. September 27  

🌅 7:44 a.m.

H: 52°F – 69°F

L: 40°F – 53°F

🌇 7:38 p.m.

Mon. September 28  

🌅 7:46 a.m.

H: 52°F – 69°F

L: 39°F – 53°F

🌇 7:36 p.m.

Tue. September 29  

🌅 7:47 a.m.

H: 52°F – 69°F

L: 39°F – 52°F

🌇 7:34 p.m.

Wed. September 30  

🌅 7:49 a.m.

H: 51°F – 68°F

L: 38°F – 52°F

🌇 7:32 p.m.


Temperature climatic data from weather station: COPPER HBR FT WILKINS (USC00201780)

Precipitation climatic data from weather station: COPPER HARBOR (USW00094899)

Agricultural climatic data from weather station: COPPER HBR FT WILKINS (USC00201780)