October weather forecastGrand Portage, MN
October
Weather in October
October ushers in distinct autumn characteristics in Grand Portage with decreasing temperatures and diminishing daylight hours. The first snow of the season appears, setting a 0.98" (25mm) mark as winter approaches. The sea temperature reflects a significant drop, signaling the halting of water-related activities. Cloud coverage increases, shading the city with the grey hues of winter. The winds pick up the pace, ushering in the chill.Temperature
A decrease in the average high-temperature is observed in Grand Portage, Minnesota, during October, shifting from a refreshing 61.7°F (16.5°C) in September to a frosty 47.5°F (8.6°C). Grand Portage reports an average nighttime low-temperature of 38.3°F (3.5°C) in October.Humidity
In Grand Portage, Minnesota, the average relative humidity in October is 80%.Rainfall
The months with the most rainfall in Grand Portage are May and October, with an average 1.77" (45mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. October is the first month it typically snows in Grand Portage. Throughout October, in the average 2.5 snowfall days, it receives 0.98" (25mm) of snow. Throughout the year, there are 104.1 snowfall days, and 39.84" (1012mm) of snow is accumulated.Ocean temperature
In Grand Portage, the average seawater temperature in October is 46.4°F (8°C).Note: In 46.4°F (8°C), cold shock and rapid breathing can occur when swimming at temperatures below 50°F (10°C).
Daylight
In October, the average length of the day is 10h and 49min.On the first day of October, sunrise is at 6:59 am and sunset at 6:37 pm. On the last day of the month, sunrise is at 7:43 am and sunset at 5:41 pm CDT.
Sunshine
The average sunshine in October is 5.5h.UV index
In Grand Portage, the average daily maximum UV index in October is 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.Note: In October, the maximum UV index of 2 transforms into these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grand Portage, MN
- Average high temperature in October: 47.5°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 October: 38.3°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).
Average pressure in October
Grand Portage, MN
- Average pressure in October: 29.94"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in October
Grand Portage, MN
- Average wind speed in October: 8.5mph
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).
Average humidity in October
Grand Portage, MN
- Average humidity in October: 80%
The months with the highest relative humidity are January and February (90%).
The month with the lowest relative humidity is May (70%).
Average rainfall in October
Grand Portage, MN
- Average rainfall in October: 1.77"
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").
Average rainfall days in October
Grand Portage, MN
- Average rainfall days in October: 11.3 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).
Average snowfall in October
Grand Portage, MN
- Average snowfall in October: 0.98"
The month with the highest snowfall is January (7.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Grand Portage, MN
- Average snowfall days in October: 2.5 days
The month with the highest number of snowfall days is January (21.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Grand Portage, MN
- Average sea temperature in October: 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).
Average daylight in October /
Average sunshine in October
Grand Portage, MN
- Average daylight in October: 10h and 48min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in October: 5h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 0min).
Average sunshine days in October
Grand Portage, MN
- Average sunshine days in October: 16.7 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).
Average UV index in October
Grand Portage, MN
- Average UV index in October: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in October
Grand Portage, MN
- Average cloud cover in October: 50
The month with the most cloud cover is January (Cloud cover 70).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in October
Grand Portage, MN
- Average visibility in October: 6mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
