Water Temperature of Keweenaw Bay Near Jacobsville, MI

Current Water Temperature

55.0°F 12.8°C
Cold Thermal Gear Required
55.0°F
Frigid < 50°F
Cold 50°–60°
Cool 60°–70°
Comfortable 70°–80°
Warm 80°+

Cold shock risk with rapid dexterity loss (10–15 mins). Wetsuit or drysuit strongly advised for any immersion.

Measurement Time: Wednesday, October 14, 2026, 1:00 PM EDT

Temperature Locations

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Local Points of Interest

Keweenaw Peninsula; Torch Lake Township, MI

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Keweenaw Bay

Station Name: South Entry Buoy, South Keweenaw Peninsula, MI
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 587 feet

Nearest Address:
Offshore
Jacobsville, MI
Houghton County

GPS Coordinates: 46.969, -88.398

Nearby Water Temperatures

Pilgrim River, Houghton, MI (10.7 mi)
Falls River, L'Anse, MI (16.3 mi)
Sturgeon River, Pelkie, MI (20.9 mi)
Lake Superior, Calumet, MI (23 mi)
Salmon Trout River, Champion, MI (27.8 mi)
East Branch Salmon Trout River, Powell, MI (28.7 mi)
Middle Branch Escanaba River, Humboldt, MI (41.4 mi)
Lake Superior, Marquette, MI (56.4 mi)
West Branch Ontonagon River, Bergland, MI (60.4 mi)
Lake Superior, Lake Superior, MI (70.3 mi)
Presque Isle River, Tula, MI (71.5 mi)
Washington Creek, Windigo, MI (74.5 mi)
Lake Superior, Isle Royale, MI (79.9 mi)
Popple River, Fence, WI (83.3 mi)
Stevenson Creek, Boulder Junction, WI (86.4 mi)

Weather Near Jacobsville, Michigan

Current Weather

44.5°F
Overcast
Conditions: Overcast
Humidity: 62%
Feels Like: 39°F
Wind: SW 10.3 mph
Wind Gusts: 32.2 mph
Pressure: 29.76 in
Precipitation: 0 in
Cloud Cover: 100%
Visibility: 6 mi
UV Index: 0

Weather Forecast

Sunny
Sat
H: 51°F
L: 32°F
Patchy rain nearby
Sun
H: 48°F
L: 44°F
Overcast
Mon
H: 52°F
L: 38°F

Air Quality

EPA Index 1 • Good

Air quality is satisfactory, and air pollution poses little or no risk.

PM2.5
7.7 μg/m³
Good
PM10
7.9 μg/m³
Good
Ozone (O3)
57 μg/m³
Photochemical
NO2
2.5 μg/m³
Nitrogen Dioxide
SO2
0.4 μg/m³
Sulfur Dioxide
CO
142 μg/m³
Carbon Monoxide

Astronomical

Sun
9h 43m daylight
Sunrise 7:45 AM
Solar Noon 12:37 PM
Sunset 5:28 PM
Moon
Waning Crescent • 1%
Moonrise 6:08 AM
Transit 11:18 AM
Moonset 4:18 PM

Best Times for Fishing or Hunting

Major Periods

10:48 AM - 1:18 PM
11:11 PM - 1:41 AM

Minor Periods

5:38 AM - 7:08 AM
3:48 PM - 5:18 PM
Action Rating:
Good Action 3/5

Small Craft Advisory issued November 7 at 3:06PM EST until November 8 at 4:00AM EST by NWS Marquette MI

Effective: Sat November 7, 2026, 3:06 PM
Expires: Sun November 8, 2026, 3:15 AM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. For the Gale Warning, west winds 15 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, from 10 PM this evening to 4 AM EST Sunday. For the Gale Warning, from 4 AM to 7 PM EST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.


Gale Warning issued November 7 at 3:06PM EST until November 8 at 7:00PM EST by NWS Marquette MI

Effective: Sat November 7, 2026, 3:06 PM
Expires: Sun November 8, 2026, 3:15 AM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft expected. For the Gale Warning, west winds 15 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, from 10 PM this evening to 4 AM EST Sunday. For the Gale Warning, from 4 AM to 7 PM EST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.


Gale Warning issued November 7 at 10:17PM EST until November 8 at 7:00PM EST by NWS Marquette MI

Effective: Sat November 7, 2026, 10:17 PM
Expires: Sun November 8, 2026, 10:30 AM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft occurring. For the Gale Warning, west winds 15 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, until 4 AM EST Sunday. For the Gale Warning, from 4 AM to 7 PM EST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.


Small Craft Advisory issued November 7 at 10:17PM EST until November 8 at 4:00AM EST by NWS Marquette MI

Effective: Sat November 7, 2026, 10:17 PM
Expires: Sun November 8, 2026, 10:30 AM

* WHAT...For the Small Craft Advisory, southwest winds 10 to 20 kt with gusts up to 30 kt and waves 1 to 3 ft occurring. For the Gale Warning, west winds 15 to 25 kt with gusts up to 35 kt and waves 2 to 5 ft expected. * WHERE...Manitou Island to Point Isabelle MI, Point Isabelle to Lower Entrance of Portage Canal MI and Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays. * WHEN...For the Small Craft Advisory, until 4 AM EST Sunday. For the Gale Warning, from 4 AM to 7 PM EST Sunday. * IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.
Saturday, November 7, 2026

Weather Forecast

Conditions: Sunny
Average Temperature: 40°F
Average Humidity: 66%
Chance of Rain: 8%
Wind: 10.7 mph
UV Index: 1.6

Astronomical

Sun
9h 43m daylight
Sunrise 7:45 AM
Solar Noon 12:37 PM
Sunset 5:28 PM
Moon
Waning Crescent • 1%
Moonrise 6:08 AM
Transit 11:18 AM
Moonset 4:18 PM

Best Times for Fishing or Hunting

Major Periods

10:48 AM - 1:18 PM
11:11 PM - 1:41 AM

Minor Periods

5:38 AM - 7:08 AM
3:48 PM - 5:18 PM
Action Rating:
Good Action 3/5
Sunday, November 8, 2026

Weather Forecast

Conditions: Patchy rain nearby
Average Temperature: 46.2°F
Average Humidity: 69%
Chance of Rain: 23%
Wind: 19 mph
UV Index: 0.9

Astronomical

Sun
9h 40m daylight
Sunrise 7:47 AM
Solar Noon 12:37 PM
Sunset 5:27 PM
Moon
New • 0%
Moonrise 7:19 AM
Transit 12:04 PM
Moonset 4:41 PM

Best Times for Fishing or Hunting

Major Periods

11:34 AM - 2:04 PM
11:59 PM - 2:29 AM

Minor Periods

6:49 AM - 8:19 AM
4:11 PM - 5:41 PM
Action Rating:
Very Good 4/5
Monday, November 9, 2026

Weather Forecast

Conditions: Overcast
Average Temperature: 44.7°F
Average Humidity: 71%
Chance of Rain: 14%
Wind: 11.2 mph
UV Index: 0.9

Astronomical

Sun
9h 38m daylight
Sunrise 7:48 AM
Solar Noon 12:37 PM
Sunset 5:26 PM
Moon
New • 2%
Moonrise 8:31 AM
Transit 12:52 PM
Moonset 5:07 PM

Best Times for Fishing or Hunting

Major Periods

12:22 PM - 2:52 PM
11:58 PM - 2:28 AM

Minor Periods

8:01 AM - 9:31 AM
4:37 PM - 6:07 PM
Action Rating:
Very Good 4/5
The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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