October weather forecastGrand Marais, MI
October
Weather in October
October brings about a sharp change in Grand Marais’ weather with a significant drop in temperature and the first signs of snowfall since May. The number of sunshine hours are limited, signaling shorter days. The strong winds add a chill in the air, giving a hint of the forthcoming winter. October experiences a considerable temperature swing from 42.3°F (5.7°C) to 51.1°F (10.6°C) and anticipates the first snowfall events of the season totaling 1.42" (36mm). This shift marks the full transition into fall and the onset of colder months.Temperature
The onset of October is marked by a decrease in temperature, transitioning from a refreshing 65.1°F (18.4°C) in September to a cool 51.1°F (10.6°C). Grand Marais logs an average low-temperature of 42.3°F (5.7°C) during the nights of October, subtly lower than its daytime highs.Humidity
In October, the average relative humidity is 81%.Rainfall
October is the month with the most rainfall in Grand Marais. Rain falls for 15.3 days and accumulates 2.8" (71mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Grand Marais. October is the first month it typically snows in Grand Marais. Throughout October, in the average 3.3 snowfall days, it receives 1.42" (36mm) of snow. Throughout the year, in Grand Marais, there are 108.1 snowfall days, and 48.31" (1227mm) of snow is accumulated.Ocean temperature
In October, the average ocean temperature in Grand Marais, Michigan, is 50°F (10°C).Note: Diving into 50°F (10°C) when it's under 50°F (10°C) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
The average length of the day in October in Grand Marais, Michigan, is 10h and 53min.On the first day of October in Grand Marais, sunrise is at 7:43 am and sunset at 7:23 pm. On the last day of the month, sunrise is at 8:25 am and sunset at 6:29 pm EDT.
Sunshine
In Grand Marais, the average sunshine in October is 4.6h.UV index
The average daily maximum UV index in October is 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the average person.Note: In October, the maximum UV index of 2 suggests these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Grand Marais, MI
- Average high temperature in October: 51.1°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in October: 42.3°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure in October
Grand Marais, MI
- Average pressure in October: 29.95"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Grand Marais, MI
- Average wind speed in October: 9.4mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in October
Grand Marais, MI
- Average humidity in October: 81%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in October
Grand Marais, MI
- Average rainfall in October: 2.8"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days in October
Grand Marais, MI
- Average rainfall days in October: 15.3 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in October
Grand Marais, MI
- Average snowfall in October: 1.42"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Grand Marais, MI
- Average snowfall days in October: 3.3 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Grand Marais, MI
- Average sea temperature in October: 50°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 March and April (36°F).
Average daylight in October /
Average sunshine in October
Grand Marais, MI
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in October: 4h and 36min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in October
Grand Marais, MI
- Average sunshine days in October: 11.1 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index in October
Grand Marais, MI
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in October
Grand Marais, MI
- Average cloud cover in October: 56
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in October
Grand Marais, MI
- Average visibility in October: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
