October weather forecastSouth Portland, ME
October
Weather in October
October brings the signature chills of fall to South Portland, making the city's landscape vibrant with colors. As temperatures further decrease settling at an average high of 56.3°F (13.5°C), signs of winter lurking in the corners become evident. Pumpkin patches begin to dot the cityscape as the spirit of Halloween is felt across South Portland. Rainfall in October being the highest at 2.36" (60mm), residents get a hint of the approaching colder months. The city delights in the cool weather and autumn activities, making it a picture-perfect setting for fall lovers.Temperature
The onset of October introduces a moderate change in South Portland's weather, with average high-temperatures falling from September's comfortable 66.4°F (19.1°C) to a mild 56.3°F (13.5°C). South Portland maintains a near steady average temperature of 47.5°F (8.6°C) during the nights of October, demonstrating little drop from daytime highs.Humidity
In October, the average relative humidity is 78%.Rainfall
October is the month with the most rainfall. Rain falls for 11.5 days and accumulates 2.36" (60mm) of precipitation.Snowfall
Months with snowfall in South Portland are January through April, October through December. October is the first month it typically snows. Throughout October, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. In South Portland, during the entire year, snow falls for 29.7 days and aggregates up to 11.73" (298mm) of snow.Ocean temperature
In South Portland, the average seawater temperature in October is 55°F (12.8°C).Note: Swimming in 55°F (12.8°C) can be lethal. Merely spending a few minutes in 55.4°F (13°C) waters feels harsh, and venturing below 50°F (10°C) might disrupt breathing control and bring about cold shock, contingent on individual resilience.
Daylight
In October, the average length of the day in South Portland is 11h and 0min.On the first day of the month, sunrise is at 6:39 am and sunset at 6:21 pm. On the last day of October, in South Portland, sunrise is at 7:16 am and sunset at 5:32 pm EDT.
Sunshine
In South Portland, the average sunshine in October is 6.3h.UV index
In South Portland, the average daily maximum UV index in October is 3. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In October, a regular UV index of 3 translates into these guidelines:
Take precautions - Protection against sun damage is advised. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
South Portland, ME
- Average high temperature in October: 56.3°F
The warmest month (with the highest average high temperature) is July (72.5°F).
The month with the lowest average high temperature is January (31.1°F).
- Average low temperature in October: 47.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (20.7°F).
Average pressure in October
South Portland, ME
- Average pressure in October: 30"Hg
The months with the highest atmospheric pressure are September and November (30.05"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in October
South Portland, ME
- Average wind speed in October: 10.4mph
The windiest month (with the highest average wind speed) is January (12.5mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in October
South Portland, ME
- Average humidity in October: 78%
The months with the highest relative humidity are June and July (82%).
The month with the lowest relative humidity is November (74%).
Average rainfall in October
South Portland, ME
- Average rainfall in October: 2.36"
The wettest month (with the highest rainfall) is October (2.36").
The driest month (with the least rainfall) is September (1.18").
Average rainfall days in October
South Portland, ME
- Average rainfall days in October: 11.5 days
The month with the highest number of rainy days is July (14.7 days).
The month with the least rainy days is January (5.7 days).
Average snowfall in October
South Portland, ME
- Average snowfall in October: 0.04"
The month with the highest snowfall is February (2.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in October
South Portland, ME
- Average snowfall days in October: 0.1 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average sea temperature in October
South Portland, ME
- Average sea temperature in October: 54.9°F
The best month for swimming (with the highest average sea temperature) is August (63.7°F).
The coldest month (with the lowest average sea temperature) is March (38°F).
Average daylight in October /
Average sunshine in October
South Portland, ME
- Average daylight in October: 11h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in October: 6h and 18min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days in October
South Portland, ME
- Average sunshine days in October: 17.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (13.8 days).
Average UV index in October
South Portland, ME
- Average UV index in October: 3
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, March, November and December (UV index 2).
Average cloud cover in October
South Portland, ME
- Average cloud cover in October: 42
The month with the most cloud cover is March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in October
South Portland, ME
- Average visibility in October: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
