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Islands: Mackinac/Bois Blanc
 Details for Islands: Mackinac/Bois Blanc Frost Advisory

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Frost Advisory FROST ADVISORY - Islands: Mackinac/Bois Blanc

Updated: @ 22-Sep-2026 8:55pm - next update at 9:00pm  
Summary / Temperature Wind Rain Outlook
Clear Clear
Currently: 47.9°F, Max: 61.1°F, Min: 47.9°F 47.9°F
Colder 3.5°F than last hour.

---

Feels like: 48°F

24-hr difference
-0.2°FColder 0.2°F than yesterday at this time.
  Today Yesterday
High: 61.1°F
3:32pm 		56.6°F
2:08pm
Low: 47.9°F
8:54pm 		45.7°F
10:31pm
Calm S
0
Gust:
 0 mph
0 Bft - Calm
Today: 7 mph 3:43am
Gust Month: 10.0 mph September 15
Rain Today: 0 in
Rain Rate (/hr): 0 in
Rain Yesterday: 0 in
Storm Rain: 0 in
This Month: 1.03 in
Season Total: 24.12 in
5 rain days in September.
Wednesday

Wednesday: Sunny
Sunny
Humidity & Barometer Almanac Moon
Humidity: 88 % Increased 5.0% since last hour.
Dew Point: 44.5°F Decreased 2.0°F since last hour.
Barometer: 30.494 inHg Rising 0.01 inHg/hr
Baro Trend: Steady
Sunrise: 7:25am
Sunset: 7:32pm
Moonset: 3:48am
Moonrise: 6:23pm
Waxing Gibbous
Waxing Gibbous, Moon at 11 days in cycle
86%
Illuminated
UV Index Forecast UV Index Forecast
22-Sep-2026
4.6     Medium 
23-Sep-2026
4.3     Medium 
 NWS Weather Forecast  - Outlook: Tonight & Wednesday
Tonight

Tonight: Clear
Clear

Lo 45 °F		 NWS forecast: Clear. Low around 45, with temperatures rising to around 48 overnight. East wind 5 to 10 mph.
 
Wednesday

Wednesday: Sunny
Sunny

Hi 62 °F		 NWS forecast: Sunny, with a high near 62. East wind 10 to 15 mph.
  3 Day Forecast
Wednesday
Night
Wednesday Night: Mostly Clear
Mostly Clear
Thursday

Thursday: Sunny
Sunny
Thursday
Night
Thursday Night: Partly Cloudy
Partly Cloudy
Friday

Friday: Sunny
Sunny
Friday
Night
Friday Night: Mostly Clear
Mostly Clear
Saturday

Saturday: Mostly Sunny
Mostly Sunny
Lo 46 °FHi 65 °FLo 46 °FHi 66 °FLo 45 °FHi 67 °F