Weather Almanac: Mackinac Island, MI 49757

🗓️ Historical norms for August 2026

July September

Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

August avg. precipitation

🌧️ 2.73"

August days below freezing

📉 ≈0.0 days

Average August lows 56°F – 61°F

USDA Zone

Annual extreme lows -15°F to -10°F

Last Spring Frost (36°F)

🌷 May 27

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First Fall Frost (36°F)

🍂 Sep 30

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F: Forecast

H: Normal High Temp

L: Normal Low Temp

Sunday

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sat. August 1

🌅 6:21 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:07 p.m.

Sun. August 2

🌅 6:22 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:06 p.m.

Mon. August 3

🌅 6:23 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:04 p.m.

Tue. August 4

🌅 6:25 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:03 p.m.

Wed. August 5

🌅 6:26 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:01 p.m.

Thu. August 6

🌅 6:27 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 9:00 p.m.

Fri. August 7

🌅 6:28 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:59 p.m.

Sat. August 8

🌅 6:29 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:57 p.m.

Sun. August 9

🌅 6:31 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:56 p.m.

Mon. August 10

🌅 6:32 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:54 p.m.

Tue. August 11

🌅 6:33 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:52 p.m.

Wed. August 12

🌅 6:34 a.m.

H: 71°F – 81°F

L: 54°F – 65°F

🌇 8:51 p.m.

Thu. August 13

🌅 6:36 a.m.

H: 71°F – 80°F

L: 54°F – 65°F

🌇 8:49 p.m.

Fri. August 14

🌅 6:37 a.m.

H: 71°F – 80°F

L: 54°F – 65°F

🌇 8:48 p.m.

Sat. August 15

🌅 6:38 a.m.

H: 70°F – 80°F

L: 54°F – 65°F

🌇 8:46 p.m.

Sun. August 16

🌅 6:39 a.m.

H: 70°F – 80°F

L: 54°F – 65°F

🌇 8:44 p.m.

Mon. August 17

🌅 6:41 a.m.

H: 70°F – 80°F

L: 53°F – 65°F

🌇 8:43 p.m.

Tue. August 18

🌅 6:42 a.m.

H: 70°F – 80°F

L: 53°F – 65°F

🌇 8:41 p.m.

Wed. August 19

🌅 6:43 a.m.

H: 70°F – 80°F

L: 53°F – 65°F

🌇 8:39 p.m.

Thu. August 20

🌅 6:44 a.m.

H: 70°F – 80°F

L: 53°F – 65°F

🌇 8:38 p.m.

Fri. August 21

🌅 6:45 a.m.

H: 70°F – 80°F

L: 53°F – 64°F

🌇 8:36 p.m.

Sat. August 22

🌅 6:47 a.m.

H: 69°F – 80°F

L: 53°F – 64°F

🌇 8:34 p.m.

Sun. August 23

🌅 6:48 a.m.

H: 69°F – 80°F

L: 53°F – 64°F

🌇 8:32 p.m.

Mon. August 24

🌅 6:49 a.m.

H: 69°F – 80°F

L: 52°F – 64°F

🌇 8:31 p.m.

Tue. August 25

🌅 6:50 a.m.

H: 69°F – 80°F

L: 52°F – 64°F

🌇 8:29 p.m.

Wed. August 26

🌅 6:52 a.m.

H: 69°F – 79°F

L: 52°F – 64°F

🌇 8:27 p.m.

Thu. August 27

🌅 6:53 a.m.

H: 69°F – 79°F

L: 52°F – 63°F

🌇 8:25 p.m.

Fri. August 28

🌅 6:54 a.m.

H: 68°F – 79°F

L: 52°F – 63°F

🌇 8:23 p.m.

Sat. August 29

🌅 6:55 a.m.

H: 68°F – 79°F

L: 51°F – 63°F

🌇 8:22 p.m.

Sun. August 30

🌅 6:57 a.m.

H: 68°F – 79°F

L: 51°F – 63°F

🌇 8:20 p.m.

Mon. August 31

🌅 6:58 a.m.

H: 67°F – 79°F

L: 51°F – 63°F

🌇 8:18 p.m.

July September

Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.

Temperature climatic data from weather station: ST IGNACE MACKINAC BR (USC00207274)

Precipitation climatic data from weather station: ST IGNACE MACKINAC BR (USC00207274)

Agricultural climatic data from weather station: ST IGNACE MACKINAC BR (USC00207274)