Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Grand Marais/Cook County Airport (KCKC)

Lat: 47.84°NLon: 90.39°WElev: 1784ft.

Fair

N/A

Humidity	NA
Wind Speed	E 8 mph
Barometer	30.18 in
Dewpoint	N/A
Visibility	10.00 mi
Last update	18 Aug 12:35 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

5 Miles WSW Grand Portage MN

Overnight
Low: 53 °F⇑
Slight Chance
Showers
Monday
High: 65 °F
Showers
Likely
Monday Night
Low: 59 °F
Chance
Showers and
Patchy Fog
then Patchy
Fog
Tuesday
High: 73 °F
Patchy Fog
then Mostly
Sunny
Tuesday Night
Low: 57 °F
Mostly Clear
Wednesday
High: 75 °F
Sunny
Wednesday Night
Low: 59 °F
Partly Cloudy
Thursday
High: 76 °F
Mostly Sunny
Thursday Night
Low: 62 °F
Slight Chance
T-storms then
Chance
Showers

Detailed Forecast

Overnight

A 10 percent chance of showers after 5am. Mostly cloudy, with a temperature rising to around 57 by 5am. East wind around 10 mph, with gusts as high as 15 mph.

Monday

A chance of showers and thunderstorms before 9am, then showers likely and possibly a thunderstorm between 9am and 5pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 65. East wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

A 30 percent chance of showers, mainly before 9pm. Patchy fog after 8pm. Otherwise, mostly cloudy, with a low around 59. East wind around 5 mph becoming north after midnight. Winds could gust as high as 20 mph.

Tuesday

Patchy fog before 9am. Otherwise, partly sunny, with a high near 73. North wind 5 to 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 57. Calm wind.

Wednesday

Sunny, with a high near 75. Northwest wind around 5 mph becoming southeast in the morning.

Wednesday Night

Partly cloudy, with a low around 59. Southwest wind around 5 mph.

Thursday

Mostly sunny, with a high near 76. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.

Thursday Night

A chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 62. Southwest wind around 5 mph, with gusts as high as 20 mph.

Friday

A chance of showers, mainly before 1pm. Mostly sunny, with a high near 77. West wind around 10 mph, with gusts as high as 20 mph.

Friday Night

Mostly clear, with a low around 57. West wind 5 to 10 mph, with gusts as high as 20 mph.

Saturday

A chance of showers. Mostly sunny, with a high near 69. West wind around 10 mph, with gusts as high as 20 mph.

Saturday Night

Partly cloudy, with a low around 52. Northwest wind around 10 mph, with gusts as high as 20 mph.

Sunday

A slight chance of showers. Mostly sunny, with a high near 69. Northwest wind around 10 mph, with gusts as high as 20 mph.