Monthly weather forecast and climate
Portland, NY

January, like December, is another subzero cold winter month in Portland, New York, with average temperature ranging between max 29.7°F (-1.3°C) and min 20.8°F (-6.2°C). January is the coldest month, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.8°F (-6.2°C). Weather in January »

The last month of the winter, February, is another freezing cold month in Portland, New York, with average temperature fluctuating between 21.6°F (-5.8°C) and 31.1°F (-0.5°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 31.1°F (-0.5°C). Weather in February »

March, the first month of the spring, in Portland, is a cold month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 38.3°F (3.5°C). In Portland, the average high-temperature slightly increases, from a freezing cold 31.1°F (-0.5°C) in February, to a wintry 38.3°F (3.5°C). Weather in March »

April is a frosty spring month in Portland, New York, with average temperature varying between 36.9°F (2.7°C) and 47.8°F (8.8°C). In Portland, the average high-temperature increases, from a wintry 38.3°F (3.5°C) in March, to a frosty 47.8°F (8.8°C). Weather in April »

May, the last month of the spring, in Portland, is a mild month, with average temperature ranging between min 48.2°F (9°C) and max 58.8°F (14.9°C). In Portland, the average high-temperature increases, from a frosty 47.8°F (8.8°C) in April, to a moderate 58.8°F (14.9°C). Weather in May »

June, the first month of the summer, in Portland, is a comfortable month, with average temperature varying between 67.3°F (19.6°C) and 57.2°F (14°C). In June, the average high-temperature marginally rises, from a mild 58.8°F (14.9°C) in May, to a comfortable 67.3°F (19.6°C). Weather in June »

July in Portland, New York, is a warm summer month, with average temperature ranging between max 74.1°F (23.4°C) and min 64°F (17.8°C). July is the warmest month, with an average high-temperature of 74.1°F (23.4°C) and an average low-temperature of 64°F (17.8°C). Weather in July »

August, the last month of the summer, in Portland, is also a moderately hot month, with average temperature fluctuating between 73.9°F (23.3°C) and 63.5°F (17.5°C). In Portland, the average high-temperature is almost the same as in July - a still moderately hot 73.9°F (23.3°C). Weather in August »

The first month of the autumn, September, is also an agreeable month in Portland, New York, with average temperature fluctuating between 68.9°F (20.5°C) and 58.5°F (14.7°C). In Portland, the average high-temperature in September is essentially the same as in August - a pleasant 68.9°F (20.5°C). Weather in September »

October, the same as September, in Portland, New York, is another mild autumn month, with average temperature ranging between min 48.4°F (9.1°C) and max 57.7°F (14.3°C). In October, the average high-temperature decreases, from a pleasant 68.9°F (20.5°C) in September, to a mild 57.7°F (14.3°C). Weather in October »

The last month of the autumn, November, is also a frosty month in Portland, New York, with average temperature varying between 45.5°F (7.5°C) and 37°F (2.8°C). In November, the average high-temperature decreases, from a moderate 57.7°F (14.3°C) in October, to a frosty 45.5°F (7.5°C). Weather in November »

December, the first month of the winter, in Portland, is still a cold month, with average temperature ranging between max 36.5°F (2.5°C) and min 29.3°F (-1.5°C). In Portland, the average high-temperature decreases, from a chilly 45.5°F (7.5°C) in November, to a cold 36.5°F (2.5°C). Weather in December »

What is the coldest month in Portland?

With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.8°F (-6.2°C), January is the coldest month in Portland, New York.

How many days does it rain in Portland?

Throughout the year, in Portland, New York, there are 176.8 rainfall days, and 33.03" (839mm) of precipitation is accumulated.

When does it snow in Portland?

Months with snowfall are January through May, October through December.

How many days does it snow in Portland?

In Portland, New York, during the entire year, snow falls for 67.8 days, and aggregates up to 22.01" (559mm) of snow.

What is the month with the least sunshine in Portland?

January has the least sunshine of the year in Portland, New York, with an average of 2.4h of sunshine.

What are the months with the lowest UV index in Portland?

January and December, with an average maximum UV index of 1, are months with the lowest UV index in Portland, New York.

What is the most humid month in Portland?

February is the most humid month in Portland, New York, with an average relative humidity of 86%.

When does it snow the most in Portland?

The month with the most snowfall in Portland is February when snow falls for 15.2 days and typically aggregates up to 5.75" (146mm) of snow.

When it does not snow in Portland?

In Portland snow does not fall in June through September.

When are the longest days in Portland?

With an average of 15.2h of daylight, June has the longest days of the year.

What is the warmest month in Portland?

With an average high-temperature of 74.1°F (23.4°C) and an average low-temperature of 64°F (17.8°C), July is the warmest month in Portland, New York.

When is the highest UV index in Portland?

July is the month with the highest UV index, with an average maximum UV index of 6.

What month has the most sunshine in Portland?

August has the most sunshine of the year in Portland, New York, with an average of 10.5h of sunshine.

What is the least humid month in Portland?

With an average relative humidity of 77%, September is the least humid month in Portland.

What is the driest month in Portland?

September is the month with the least rainfall in Portland, New York. Rain falls for 16.2 days and accumulates 2.24" (57mm) of precipitation.

What is the rainiest month in Portland?

The month with the most rainfall is October when the rain falls for 19.2 days and typically aggregates up to 3.27" (83mm) of precipitation.

What is the month with the shortest days in Portland?

December has the shortest days of the year in Portland, with an average of 9.1h of daylight.
Average temperature - Portland, NY
Average pressure - Portland, NY

The month with the highest atmospheric pressure is November (30.1").
The month with the lowest atmospheric pressure is June (29.93").

Average wind speed - Portland, NY

The windiest month (with the highest average wind speed) is January (14.2mph).
The calmest month (with the lowest average wind speed) is July (8.1mph).

Average humidity - Portland, NY
Average rainfall - Portland, NY

The wettest month (with the highest rainfall) is October (3.27").
The driest month (with the least rainfall) is September (2.24").

Average rainfall days - Portland, NY

The month with the highest number of rainy days is October (19.2 days).
The month with the least rainy days is January (8.1 days).

Average snowfall - Portland, NY
Average snowfall days - Portland, NY

The month with the highest number of snowfall days is January (16 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Portland, NY

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.1h).

The month with the most sunshine is August (Average sunshine: 10.5h).
The month with the least sunshine is January (Average sunshine: 2.4h).

Average sunshine days - Portland, NY

The month with the most sunshine days is September (11.3 days).
The month with the least sunshine days is January (5.4 days).

Average visibility - Portland, NY

Months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).