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As of 12:20 CDT

Weather in Grand Portage, MN

73°Current weather

Grand Portage, Sunday, 9 August, 12:20

Overcast. Feels like 73°. High 73°, low 62°.

Pressure29.88 inHg
Wind2 mph SE
Humidity69%
Visibility6.2 mi
Dew point62°
Mon, 1078° / 60°0Partly cloudy
78 °Partly cloudy

Grand Portage, Monday, 10 August

Partly cloudy. High 78°, low 60°.

Pressure29.88 inHg
Wind4.4 mph W
Humidity48%
Visibility6.2 mi
Dew point49°
Tue, 1168° / 59°0Partly cloudy
68 °Partly cloudy

Grand Portage, Tuesday, 11 August

Partly cloudy. High 68°, low 59°.

Pressure29.88 inHg
Wind4.9 mph SE
Humidity63%
Visibility6.2 mi
Dew point52°
Wed, 1273° / 57°0Mostly clear
73 °Mostly clear

Grand Portage, Wednesday, 12 August

Mostly clear. High 73°, low 57°.

Pressure29.88 inHg
Wind7 mph NW
Humidity41%
Visibility6.2 mi
Dew point45°
Thu, 1364° / 51°0Partly cloudy
64 °Partly cloudy

Grand Portage, Thursday, 13 August

Partly cloudy. High 64°, low 51°.

Pressure30.06 inHg
Wind7.2 mph S
Humidity53%
Visibility6.2 mi
Dew point47°
Fri, 1468° / 55°0Partly cloudy
68 °Partly cloudy

Grand Portage, Friday, 14 August

Partly cloudy. High 68°, low 55°.

Pressure30.21 inHg
Wind9.3 mph S
Humidity52%
Visibility—
Dew point48°
Sat, 1566° / 57°0Overcast
66 °Overcast

Grand Portage, Saturday, 15 August

Overcast. High 66°, low 57°.

Pressure30.24 inHg
Wind5.4 mph SE
Humidity61%
Visibility—
Dew point50°
Sun, 1668° / 56°0.11Light rain
68 °Light rain

Grand Portage, Sunday, 16 August

Light rain. High 68°, low 56°.

Pressure30.06 inHg
Wind7.4 mph W
Humidity96%
Visibility—
Dew point57°
Mon, 1769° / 58°0.09Light rain
69 °Light rain

Grand Portage, Monday, 17 August

Light rain. High 69°, low 58°.

Pressure30.00 inHg
Wind9.4 mph S
Humidity61%
Visibility—
Dew point52°
Tue, 1869° / 58°0.98Heavy rain
69 °Heavy rain

Grand Portage, Tuesday, 18 August

Heavy rain. High 69°, low 58°.

Pressure29.65 inHg
Wind10.6 mph SW
Humidity78%
Visibility—
Dew point60°
Wed, 1966° / 55°0.1Light rain
66 °Light rain

Grand Portage, Wednesday, 19 August

Light rain. High 66°, low 55°.

Pressure29.91 inHg
Wind14.8 mph N
Humidity54%
Visibility—
Dew point47°
Thu, 2070° / 54°0Overcast
70 °Overcast

Grand Portage, Thursday, 20 August

Overcast. High 70°, low 54°.

Pressure29.85 inHg
Wind9.9 mph SW
Humidity46%
Visibility—
Dew point46°
Fri, 2164° / 58°0.33Light rain
64 °Light rain

Grand Portage, Friday, 21 August

Light rain. High 64°, low 58°.

Pressure29.65 inHg
Wind6.5 mph W
Humidity91%
Visibility—
Dew point60°
Sat, 2268° / 57°0.06Light rain
68 °Light rain

Grand Portage, Saturday, 22 August

Light rain. High 68°, low 57°.

Pressure29.88 inHg
Wind7.1 mph N
Humidity56%
Visibility—
Dew point51°
Sun, 2366° / 55°0Partly cloudy
66 °Partly cloudy

Grand Portage, Sunday, 23 August

Partly cloudy. High 66°, low 55°.

Pressure30.12 inHg
Wind9 mph NW
Humidity57%
Visibility—
Dew point49°
Mon, 2474° / 57°0.01Light rain
74 °Light rain

Grand Portage, Monday, 24 August

Light rain. High 74°, low 57°.

Pressure30.00 inHg
Wind11.7 mph SW
Humidity55%
Visibility—
Dew point54°

About the monthly outlook

How accurate is a 30-day forecast?

The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Grand Portage, MN are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.

What does "above normal" mean?

We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.

Where do the 66-year records come from?

They are real temperature extremes recorded in Grand Portage, MN since 1960: the highest and lowest reading for each calendar date, with the year it happened.

How often is it updated?

The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.