Monthly weather forecast and climate
Lewiston, NY

January, like December, is another subzero cold winter month in Lewiston, New York, with temperature in the range of an average low of 20.5°F (-6.4°C) and an average high of 29.7°F (-1.3°C). With an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.5°F (-6.4°C), January is the coldest month. Weather in January »

The last month of the winter, February, is also a subzero cold month in Lewiston, New York, with average temperature ranging between min 21.4°F (-5.9°C) and max 30.9°F (-0.6°C). In Lewiston, the average high-temperature in February is almost the same as in January - a still subzero cold 30.9°F (-0.6°C). Weather in February »

The first month of the spring, March, is a wintry month in Lewiston, New York, with temperature in the range of an average high of 39.7°F (4.3°C) and an average low of 28.8°F (-1.8°C). In Lewiston, the average high-temperature slightly increases, from a freezing cold 30.9°F (-0.6°C) in February, to a wintry 39.7°F (4.3°C). Weather in March »

April is a cool spring month in Lewiston, New York, with temperature in the range of an average high of 50.4°F (10.2°C) and an average low of 38.1°F (3.4°C). In Lewiston, the average high-temperature increases, from a cold 39.7°F (4.3°C) in March, to a fresh 50.4°F (10.2°C). Weather in April »

May, the last month of the spring, in Lewiston, is a comfortable month, with average temperature ranging between max 63.1°F (17.3°C) and min 48.7°F (9.3°C). In May, the average high-temperature increases, from a cool 50.4°F (10.2°C) in April, to a comfortable 63.1°F (17.3°C). Weather in May »

The first month of the summer, June, is a pleasant month in Lewiston, New York, with temperature in the range of an average low of 57.6°F (14.2°C) and an average high of 71.2°F (21.8°C). In June, the average high-temperature marginally rises, from an enjoyable 63.1°F (17.3°C) in May, to an agreeable 71.2°F (21.8°C). Weather in June »

July in Lewiston, New York, is a moderately hot summer month, with average temperature ranging between min 64.8°F (18.2°C) and max 78.1°F (25.6°C). With an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 64.8°F (18.2°C), July is the warmest month. Weather in July »

The last month of the summer, August, is also a moderately hot month in Lewiston, New York, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 77.2°F (25.1°C). In Lewiston, the average high-temperature is almost the same as in July - a still moderately hot 77.2°F (25.1°C). Weather in August »

The first month of the autumn, September, is still a pleasant month in Lewiston, New York, with average temperature varying between 70.9°F (21.6°C) and 59.2°F (15.1°C). In Lewiston, the average high-temperature in September marginally drops, from a moderately hot 77.2°F (25.1°C) in August, to an agreeable 70.9°F (21.6°C). Weather in September »

October, like September, is a moderate autumn month in Lewiston, New York, with average temperature ranging between max 58.3°F (14.6°C) and min 48.4°F (9.1°C). In October, the average high-temperature drops, from a pleasant 70.9°F (21.6°C) in September, to a mild 58.3°F (14.6°C). Weather in October »

November, the last month of the autumn, in Lewiston, is another chilly month, with average temperature fluctuating between 45.9°F (7.7°C) and 36.9°F (2.7°C). In Lewiston, the average high-temperature in November decreases, from a mild 58.3°F (14.6°C) in October, to a chilly 45.9°F (7.7°C). Weather in November »

The first month of the winter, December, is still a cold month in Lewiston, New York, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 36.3°F (2.4°C). In Lewiston, the average high-temperature in December drops, from a chilly 45.9°F (7.7°C) in November, to a cold 36.3°F (2.4°C). Weather in December »

What is the coldest month in Lewiston?

January is the coldest month, with an average high-temperature of 29.7°F (-1.3°C) and an average low-temperature of 20.5°F (-6.4°C).

How much does it rain in Lewiston?

In Lewiston, New York, during the entire year, the rain falls for 169.3 days and collects up to 30.31" (770mm) of precipitation.

When does it snow in Lewiston?

January through May, October through December are months with snowfall in Lewiston, New York.

How much does it snow in Lewiston?

In Lewiston, New York, during the entire year, snow falls for 65.6 days, and aggregates up to 22.6" (574mm) of snow.

What is the month with the least sunshine in Lewiston?

With an average of 2.7h of sunshine, January has the least sunshine of the year in Lewiston, New York.

What is the month with the lowest UV index in Lewiston?

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

What is the most humid month in Lewiston?

With an average relative humidity of 84%, February is the most humid month in Lewiston.

What is the snowiest month in Lewiston?

February is the month with the most snowfall in Lewiston, New York. Snow falls for 14.9 days and accumulates 7.13" (181mm) of snow.

When it does not snow in Lewiston?

In Lewiston snow does not fall in June through September.

When are the longest days in Lewiston?

June has the longest days of the year, with an average of 15.3h of daylight.

What is the warmest month in Lewiston?

With an average high-temperature of 78.1°F (25.6°C) and an average low-temperature of 64.8°F (18.2°C), July is the warmest month.

What is the rainiest month in Lewiston?

The month with the most rainfall in Lewiston, New York, is July when the rain falls for 17.5 days and typically aggregates up to 3.11" (79mm) of precipitation.

What month has the most sunshine in Lewiston?

With an average of 10.6h of sunshine, July has the most sunshine of the year in Lewiston, New York.

What is the month with the highest UV index in Lewiston?

Months with the highest UV index in Lewiston, New York, are July and August, with an average maximum UV index of 6.

What are the least humid months in Lewiston?

Months with the lowest humidity in Lewiston are August and September, with an average relative humidity of 74%.

What is the driest month in Lewiston?

September is the month with the least rainfall in Lewiston. Rain falls for 13.7 days and accumulates 1.85" (47mm) of precipitation.

What is the month with the shortest days in Lewiston?

December has the shortest days of the year, with an average of 9h of daylight.
Average temperature - Lewiston, NY
Average pressure - Lewiston, NY

The month with the highest atmospheric pressure is November (30.08").
The month with the lowest atmospheric pressure is June (29.92").

Average wind speed - Lewiston, NY

The windiest month (with the highest average wind speed) is January (12.3mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).

Average humidity - Lewiston, NY
Average rainfall - Lewiston, NY

The wettest month (with the highest rainfall) is July (3.11").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days - Lewiston, NY

The month with the highest number of rainy days is May (17.6 days).
The month with the least rainy days is February (7.8 days).

Average snowfall - Lewiston, NY
Average snowfall days - Lewiston, NY

The month with the highest number of snowfall days is January (16.8 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine - Lewiston, NY

The month with the longest days is June (Average daylight: 15.3h).
The month with the shortest days is December (Average daylight: 9h).

The month with the most sunshine is July (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 2.7h).

Average sunshine days - Lewiston, NY
Average visibility - Lewiston, NY

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