Alpena & Thunder Bay

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Lighthouse at the Alpena Marina

Today’s Forecast:

79°F
Current Temperature
Mostly Clear
Station: KAPN
Observed at: 4:00 pm
Wind: 8 mph | Humidity: 37%

This Afternoon:Sunny, with a high near 76. South wind around 10 mph.
Tonight:Mostly clear. Low around 55, with temperatures rising to around 59 overnight. Southwest wind around 5 mph.
Friday:Sunny, with a high near 80. Southwest wind 5 to 15 mph.

Today’s Report:

Boating

Excellent
  100 /100

Ideal conditions for boating. Comfortable temperature (high near 76°F), light wind, and clear forecast.

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 46/100

🛶 Paddling

Excellent
  100 /100

Ideal conditions for paddling. Comfortable temperature (high near 76°F), light wind, and clear forecast.

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 45/100

🥾 Hiking

Excellent
  98 /100

Ideal conditions for hiking. Comfortable temperature (high near 76°F), light wind, and clear forecast.

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 92/100

🐟 Fishing

Excellent
  99 /100

Ideal conditions for fishing. Comfortable temperature (high near 76°F), light wind, and clear forecast.

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 46/100

About Alpena & Thunder Bay

Alpena & Thunder Bay is a northeast Michigan gateway for Lake Huron shoreline, shipwreck-focused boating, paddling, trails, parks, and quieter outdoor weekends. The bay setting makes weather planning essential because wind, fog, waves, and storm timing can change water plans fast. It is a good destination for flexible days that combine shoreline, trail, and town options.

Make the Most of a Alpena & Thunder Bay Day

Use marine conditions to decide whether the day belongs on the water or along the shore. Calm, clear periods favor boating, kayaking in appropriate areas, and beach walks, while breezy or foggy weather is better for trails, overlooks, and town-based stops. Keep thunderstorm timing in mind before heading to exposed beaches or launches.

Weather Tips for Alpena & Thunder Bay

  • Thunder Bay can become choppy with persistent wind, which affects small craft and paddling comfort.
  • Fog can reduce visibility on the water and along the shoreline.
  • Cool lake air can make spring and fall walks feel colder than inland forecasts.
  • Storms should move plans away from beaches, docks, and open water immediately.

Plan Around the Conditions

Use the forecast as a way to choose the best version of Alpena & Thunder Bay, not as a simple yes-or-no answer. Match the wind, rain timing, temperature, and water or trail conditions to the activity that gives your group the safest and most comfortable day.

7-Day Forecast for Alpena & Thunder Bay

79°F
Current Temperature
Mostly Clear
Station: KAPN
Observed at: 4:00 pm
Wind: 8 mph | Humidity: 37%
Thu
76° 55°
0%
Fri
80° 61°
0%
Sat 🌧
82° 64°
28%
Sun 🌧
81° 64°
19%
Mon
81° 63°
64%
Tue
77° 60°
10%
Wed
75° 60°
9%

7-Day High Temperature Trend

76° Thu 80° Fri 82° Sat 81° Sun 81° Mon 77° Tue 75° Wed

7-Day Low Temperature Trend

55° Thu 61° Fri 64° Sat 64° Sun 63° Mon 60° Tue 60° Wed

📊 7-Day Outdoor Outlook

Good Fair Poor 94 Thu 70 Fri 20 Sat 20 Sun 4 Mon 88 Tue 100 Wed
Forecast data from the National Weather Service  |  Last Updated: July 23, 2026 4:40 pm CDT