July weather forecast
Grand Portage, MN

Weather in July

July in Grand Portage, Minnesota, is an agreeable summer month, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 53.6°F (12°C).

Temperature

July and August, with an average high-temperature of 70°F (21.1°C), are the warmest months.

Humidity

In Grand Portage, the average relative humidity is 75%.

Rainfall

In July, the rain falls for 12.9 days. Throughout July, 1.61" (41mm) of precipitation is accumulated. In Grand Portage, during the entire year, the rain falls for 115 days and collects up to 18.19" (462mm) of precipitation.

Snowfall

In Grand Portage snow does not fall in June through September.

Ocean temperature

In July, the average ocean temperature in Grand Portage is 46.4°F (8°C).
Note: At temperatures below 50°F (10°C), swimming in a suitably protected swimsuit is feasible; otherwise, cold shock and loss of breathing control are imminent. Even a short swim, without thermal protection, at temperatures around 55.4°F (13°C) is not comfortable.

Daylight

In Grand Portage, Minnesota, the average length of the day in July is 15.6h.

Sunshine

The average sunshine in Grand Portage is 10.3h.

UV index

The month with the highest UV index in Grand Portage is July, with an average maximum UV index of 5. A UV Index reading of 3 to 5 represents a moderate health risk from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the warmest month in Grand Portage?

July and August, with an average high-temperature of 70°F (21.1°C), are warmest months in Grand Portage, Minnesota.

What is the average humidity in July in Grand Portage?

In Grand Portage, Minnesota, the average relative humidity in July is 75%.

How many days does it rain in July in Grand Portage?

In Grand Portage, during July, the rain falls for 12.9 days and regularly aggregates up to 1.61" (41mm) of precipitation.

When it does not snow in Grand Portage?

June through September are months without snowfall.

What is the water temperature in July in Grand Portage?

In July, the average ocean temperature is 46.4°F (8°C). Swimming in 46.4°F (8°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.

How many hours of daylight does Grand Portage have in July?

The average length of the day in July is 15.6h.

How long on average sun shines in July in Grand Portage?

The average sunshine in July in Grand Portage is 10.3h.

When is the highest UV index in Grand Portage?

With an average maximum UV index of 5, July is the month with the highest UV index in Grand Portage, Minnesota.

How high is the UV index in July in Grand Portage?

In July, the average daily maximum UV index in Grand Portage, Minnesota, is 5. A UV Index reading of 3 to 5 represents a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in July
Grand Portage, MN

Average temperature in July - Grand Portage, MN
  • Average high temperature in July: 70°F

The warmest months (with the highest average high temperature) are July and August (70°F).
The month with the lowest average high temperature is January (16.2°F).

  • Average low temperature in July: 53.6°F

The month with the highest average low temperature is August (54.3°F).
The coldest month (with the lowest average low temperature) is January (3.7°F).

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Average pressure in July
Grand Portage, MN

Average pressure in July - Grand Portage, MN
  • Average pressure in July: 29.91"

The month with the highest atmospheric pressure is March (30.09").
The month with the lowest atmospheric pressure is June (29.9").

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Average wind speed in July
Grand Portage, MN

Average wind speed in July - Grand Portage, MN
  • Average wind speed in July: 6.3mph

The windiest month (with the highest average wind speed) is December (9.2mph).
The calmest month (with the lowest average wind speed) is June (6.2mph).

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Average humidity in July
Grand Portage, MN

Average humidity in July - Grand Portage, MN
  • Average humidity in July: 75%

Months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).

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Average rainfall in July
Grand Portage, MN

Average rainfall in July - Grand Portage, MN
  • Average rainfall in July: 1.61"

The wettest months (with the highest rainfall) are May and October (1.77").
The driest months (with the least rainfall) are January and February (1.06").

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Average rainfall days in July
Grand Portage, MN

Average rainfall days in July - Grand Portage, MN
  • Average rainfall days in July: 12.9 days

The month with the highest number of rainy days is July (12.9 days).
The month with the least rainy days is February (4.2 days).

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Average snowfall in July
Grand Portage, MN

Average snowfall in July - Grand Portage, MN
  • Average snowfall in July: 0"

The month with the highest snowfall is January (7.76").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in July
Grand Portage, MN

Average snowfall days in July - Grand Portage, MN
  • Average snowfall days in July: 0 days

The month with the highest number of snowfall days is January (21.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average sea temperature in July
Grand Portage, MN

Average sea temperature in July - Grand Portage, MN
  • Average sea temperature in July: 46°F

The best month for swimming (with the highest average sea temperature) is August (59°F).
The coldest months (with the lowest average sea temperature) are January, February, March and April (36°F).

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Average daylight in July /
Average sunshine in July
Grand Portage, MN

Average daylight in July / Average sunshine in July - Grand Portage, MN
  • Average daylight in July: 15.6h

The month with the longest days is June (Average daylight: 16h).
The month with the shortest days is December (Average daylight: 8.5h).

  • Average sunshine in July: 10.3h

The month with the most sunshine is June (Average sunshine: 10.4h).
The month with the least sunshine is January (Average sunshine: 3h).

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Average sunshine days in July
Grand Portage, MN

Average sunshine days in July - Grand Portage, MN
  • Average sunshine days in July: 17.1 days

The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is March (9.8 days).

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Average UV index in July
Grand Portage, MN

Average UV index in July - Grand Portage, MN
  • Average UV index in July: 5

The month with the highest UV index is July (UV index 5).
Months with the lowest UV index are January, February, March, November and December (UV index 1).

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Average cloud cover in July
Grand Portage, MN

Average cloud cover in July - Grand Portage, MN
  • Average cloud cover in July: 33

The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 33).

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Average visibility in July
Grand Portage, MN

Average visibility in July - Grand Portage, MN
  • Average visibility in July: 6mi

Months with the highest visibility are May, June, July, August, September, October and November (6mi).
Months with the lowest visibility are January, February, March, April and December (5mi).

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