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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, the same as December, in Lewiston, New York, is another subzero cold winter month, 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). Lewiston records the coldest temperatures in January, averaging a high of 29.7°F (-1.3°C) and a low of 20.5°F (-6.4°C). Weather in January »
Weather in February
February, the last month of the winter in Lewiston, is another freezing cold month, with an average temperature fluctuating between 21.4°F (-5.9°C) and 30.9°F (-0.6°C). Lewiston notes an average high-temperature of a still freezing cold 30.9°F (-0.6°C) in February, displaying minor variation from January. Weather in February »
Weather in March
March, the first month of the spring in Lewiston, is an icy month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 39.7°F (4.3°C). A slight uplift of average high-temperatures is noted in March, with temperatures adjusting from a freezing cold 30.9°F (-0.6°C) in February to a cold 39.7°F (4.3°C). Weather in March »
Weather in April
April is a cool spring month in Lewiston, New York, with temperature in the range of an average low of 38.1°F (3.4°C) and an average high of 50.4°F (10.2°C). With the transition into April, Lewiston experiences an increase in average high-temperatures, moving up from a wintry 39.7°F (4.3°C) in March to a fresh 50.4°F (10.2°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Lewiston, New York, with temperature in the range of an average low of 48.7°F (9.3°C) and an average high of 63.1°F (17.3°C). May's arrival coincides with a rise in the average high-temperature, moving from April's fresh 50.4°F (10.2°C) to a comfortable 63.1°F (17.3°C). Weather in May »
Weather in June
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). Lewiston, New York, observes a slight uplift in the average high-temperature with the onset of June, adjusting from May's comfortable 63.1°F (17.3°C) to a pleasant 71.2°F (21.8°C). Weather in June »
Weather in July
July is a moderately hot summer month in Lewiston, New York, with an average temperature fluctuating between 78.1°F (25.6°C) and 64.8°F (18.2°C). July is the month that records the highest temperatures, with averages ranging from a high of 78.1°F (25.6°C) to a low of 64.8°F (18.2°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Lewiston, New York, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 64.9°F (18.3°C). As July turns into August, the average high-temperatures rest at a still warm 77.2°F (25.1°C), showing a minor variation from the prior month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Lewiston, New York, with an average temperature ranging between max 70.9°F (21.6°C) and min 59.2°F (15.1°C). The onset of September brings a small shift in high-temperatures, falling from a moderately hot 77.2°F (25.1°C) in August to an agreeable 70.9°F (21.6°C). Weather in September »
Weather in October
October, the same as September, in Lewiston, New York, is another refreshing autumn month, with an average temperature ranging between max 58.3°F (14.6°C) and min 48.4°F (9.1°C). Onset of October witnesses a reduction in the average high-temperature, falling from an agreeable 70.9°F (21.6°C) in September to a mild 58.3°F (14.6°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Lewiston, New York, with an average temperature ranging between min 36.9°F (2.7°C) and max 45.9°F (7.7°C). The shift from October to November involves a decrease in the average high-temperature, dropping from a refreshing 58.3°F (14.6°C) to a chilly 45.9°F (7.7°C). Weather in November »
Weather in December
December, the first month of the winter in Lewiston, is also a wintry month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 36.3°F (2.4°C). Lewiston in December experiences a subtle temperature decline, with average high-temperatures reducing from a chilly 45.9°F (7.7°C) in November to a wintry 36.3°F (2.4°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the coldest months in Lewiston?
Lewiston's January weather reaches an average high of 29.7°F (-1.3°C) and an average low of 20.5°F (-6.4°C), making it the coldest month.
How many days 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?
Months with snowfall in Lewiston are January through May, October through December.
How many days does it snow in Lewiston?
Throughout the year, in Lewiston, New York, there are 65.6 snowfall days, and 22.6" (574mm) of snow is accumulated.
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.
When is the lowest UV index in Lewiston?
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Lewiston, New York.
What is the most humid month in Lewiston?
February is the most humid month in Lewiston, with an average relative humidity of 84%.
What is the snowiest month in Lewiston?
The month with the most snowfall in Lewiston is February, when snow falls for 14.9 days and typically aggregates up to 7.13" (181mm) of snow.
When is Daylight Saving Time (DST) in Lewiston?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Lewiston, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
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 in Lewiston, with an average of 15h and 18min of daylight.
What is the hottest time of year in Lewiston?
July, with its high-temperature average of 78.1°F (25.6°C) and a low-temperature average of 64.8°F (18.2°C), is the warmest month in Lewiston, New York.
What is the wettest month in Lewiston?
July is the month with the most rainfall. Rain falls for 17.5 days and accumulates 3.11" (79mm) of precipitation.
What month has the most sunshine in Lewiston?
The month with the most sunshine in Lewiston, New York, is July, with an average of 10.6h of sunshine.
When is the highest UV index in Lewiston?
The months with the highest UV index are July and August, with an average maximum UV index of 6.
What is the least humid month in Lewiston?
The months with the lowest humidity are August and September, with an average relative humidity of 74%.
What is the driest month in Lewiston?
The month with the least rainfall is September, when the rain falls for 13.7 days and typically collects 1.85" (47mm) of precipitation.
What is the month with the shortest days in Lewiston?
December has the shortest days of the year in Lewiston, New York, with an average of 9h and 6min of daylight.
Average temperature
Lewiston, NY
The warmest month (with the highest average high temperature) is July (78.1°F).
The month with the lowest average high temperature is January (29.7°F).
The month with the highest average low temperature is August (64.9°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).
Average pressure
Lewiston, NY
- Average pressure in January:
30.05"Hg - Average pressure in February:
30.04"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.04"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Lewiston, NY
- Average wind speed in January:
12.3mph - Average wind speed in February:
11.7mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.1mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.6mph - Average wind speed in September:
8.2mph - Average wind speed in October:
10.4mph - Average wind speed in November:
11.3mph - Average wind speed in December:
11.5mph
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
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and September (74%).
Average rainfall
Lewiston, NY
- Average rainfall in January:
2.24" - Average rainfall in February:
2.36" - Average rainfall in March:
2.24" - Average rainfall in April:
2.83" - Average rainfall in May:
2.95" - Average rainfall in June:
2.68"
- Average rainfall in July:
3.11" - Average rainfall in August:
2.68" - Average rainfall in September:
1.85" - Average rainfall in October:
2.91" - Average rainfall in November:
2.2" - Average rainfall in December:
2.24"
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
- Average rainfall days in January:
9.5 days - Average rainfall days in February:
7.8 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.6 days - Average rainfall days in June:
16.4 days
- Average rainfall days in July:
17.5 days - Average rainfall days in August:
17.3 days - Average rainfall days in September:
13.7 days - Average rainfall days in October:
17.5 days - Average rainfall days in November:
13.3 days - Average rainfall days in December:
11.1 days
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 in January:
4.76" - Average snowfall in February:
7.13" - Average snowfall in March:
2.64" - Average snowfall in April:
1.18" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (7.13").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Lewiston, NY
- Average snowfall days in January:
16.8 days - Average snowfall days in February:
14.9 days - Average snowfall days in March:
9.7 days - Average snowfall days in April:
3.5 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.5 days - Average snowfall days in November:
6.4 days - Average snowfall days in December:
13.5 days
The month with the highest number of snowfall days is January (16.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Lewiston, NY
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
2h and 4min - Average sunshine in February:
2h and 5min - Average sunshine in March:
5h and 1min - Average sunshine in April:
7h and 2min - Average sunshine in May:
9h and 1min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 4min - Average sunshine in August:
10h and 3min - Average sunshine in September:
9h and 2min - Average sunshine in October:
4h and 4min - Average sunshine in November:
4h and 2min - Average sunshine in December:
2h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days
Lewiston, NY
- Average sunshine days in January:
6.8 days - Average sunshine days in February:
7.3 days - Average sunshine days in March:
10.8 days - Average sunshine days in April:
11 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
12.1 days
- Average sunshine days in July:
11.3 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
14 days - Average sunshine days in October:
10.4 days - Average sunshine days in November:
11.7 days - Average sunshine days in December:
9.1 days
The month with the most sunshine days is September (14 days).
The month with the least sunshine days is January (6.8 days).
Average UV index
Lewiston, NY
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Lewiston, NY
The month with the most cloud cover is January (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
Lewiston, NY
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).