Climate and monthly weather forecastOld Chatham, NY
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Old Chatham, New York, with temperature in the range of an average high of 29.1°F (-1.6°C) and an average low of 16.7°F (-8.5°C). Old Chatham's coldest month, January, registers temperatures that range from a high of 29.1°F (-1.6°C) to a low of 16.7°F (-8.5°C). Weather in January »Weather in February
February, the last month of the winter in Old Chatham, is a cold month, with temperature in the range of an average high of 32.5°F (0.3°C) and an average low of 18°F (-7.8°C). Old Chatham records a slight change with February's average high-temperatures adjusting to a wintry 32.5°F (0.3°C) from January's 29.1°F (-1.6°C). Weather in February »Weather in March
March, the first month of the spring in Old Chatham, is also an icy month, with an average temperature ranging between min 25.7°F (-3.5°C) and max 41.2°F (5.1°C). March sees a marginal temperature increase, moving from an icy 32.5°F (0.3°C) in February to a still wintry 41.2°F (5.1°C). Weather in March »Weather in April
April is a cool spring month in Old Chatham, New York, with temperature in the range of an average high of 54.3°F (12.4°C) and an average low of 36.1°F (2.3°C). The transition to April introduces an increase in the average high-temperature, shifting from a cold 41.2°F (5.1°C) in March to a cool 54.3°F (12.4°C). Weather in April »Weather in May
May, the last month of the spring in Old Chatham, is a refreshing month, with temperature in the range of an average high of 67.3°F (19.6°C) and an average low of 46.6°F (8.1°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a cool 54.3°F (12.4°C) to a comfortable 67.3°F (19.6°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Old Chatham, New York, with an average temperature ranging between min 53.2°F (11.8°C) and max 74.8°F (23.8°C). Old Chatham in June experiences a slight uptick in the average high-temperature, adjusting from May's comfortable 67.3°F (19.6°C) to a moderately hot 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Old Chatham, New York, is a moderately hot summer month, with an average temperature ranging between max 80.8°F (27.1°C) and min 59°F (15°C). July, with an average high of 80.8°F (27.1°C) and a low of 59°F (15°C), signifies the warmest month of the year. The average heat index in July is calculated to be a hot 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Old Chatham, is another warm month, with an average temperature ranging between max 78.8°F (26°C) and min 57.2°F (14°C). Old Chatham's shift into August is marked by a subtle change to a still warm 78.8°F (26°C) from July's 80.8°F (27.1°C) in temperature. Weather in August »Weather in September
September, the first month of the autumn in Old Chatham, is also an agreeable month, with an average temperature ranging between max 71.2°F (21.8°C) and min 51.1°F (10.6°C). Transition into September subtly marks a drop in the average high-temperature, moderately moving from a moderately hot 78.8°F (26°C) in August to a pleasant 71.2°F (21.8°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Old Chatham, New York, with an average temperature ranging between min 42.8°F (6°C) and max 58.1°F (14.5°C). Old Chatham, New York, observes a minor decrease in the average high-temperature with the arrival of October, falling from September's pleasant 71.2°F (21.8°C) to a refreshing 58.1°F (14.5°C). Weather in October »Weather in November
November, the last month of the autumn in Old Chatham, is another chilly month, with an average temperature fluctuating between 45.5°F (7.5°C) and 32°F (0°C). The shift from October to November involves a decrease in the average high-temperature, from a refreshing 58.1°F (14.5°C) to a chilly 45.5°F (7.5°C). Weather in November »Weather in December
December, the first month of the winter in Old Chatham, is also an icy month, with an average temperature ranging between max 34.9°F (1.6°C) and min 24.1°F (-4.4°C). A shift in the average high-temperature occurs in December, reducing from a chilly 45.5°F (7.5°C) in November to a cold 34.9°F (1.6°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
January, with its average high-temperature of 29.1°F (-1.6°C) and an average low-temperature of 16.7°F (-8.5°C), holds the record as the coldest month.
January is the month with the least rainfall in Old Chatham, New York. Rain falls for 5.7 days and accumulates 1.1" (28mm) of precipitation.
Throughout the year, in Old Chatham, New York, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.
Months with snowfall are January through May, October through December.
In Old Chatham, during the entire year, snow falls for 36.9 days and aggregates up to 15.98" (406mm) of snow.
The months with the lowest UV index in Old Chatham, New York, are January through March, November and December, with an average maximum UV index of 2.
The months with the highest humidity are February and December, with an average relative humidity of 83%.
February has the least sunshine of the year in Old Chatham, with an average of 3.8h of sunshine.
The month with the most snowfall in Old Chatham, New York, is March, when snow falls for 7.8 days and typically aggregates up to 3.9" (99mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Old Chatham, New York, 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.
The least humid month in Old Chatham is April, with an average relative humidity of 75%.
The months with the highest UV index in Old Chatham are May through August, with an average maximum UV index of 5.
June through September are months without snowfall in Old Chatham.
June has the longest days of the year, with an average of 15h and 12min of daylight.
July, having an average high-temperature of 80.8°F (27.1°C) and an average low-temperature of 59°F (15°C), is the warmest month.
July is the month with the most rainfall. Rain falls for 14.9 days and accumulates 2.4" (61mm) of precipitation.
The months with the most sunshine are July and August, with an average of 10.3h of sunshine.
December has the shortest days of the year in Old Chatham, New York, with an average of 9h and 6min of daylight.
Average temperature
Old Chatham, NY
The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (29.1°F).
The month with the highest average low temperature is July (59°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Old Chatham, NY
- Average pressure in January:
30.04"Hg - Average pressure in February:
30.02"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.97"Hg - Average pressure in May:
30"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.06"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Old Chatham, NY
- Average wind speed in January:
8.2mph - Average wind speed in February:
8.1mph - Average wind speed in March:
8.2mph - Average wind speed in April:
7.9mph - Average wind speed in May:
6.5mph - Average wind speed in June:
5.8mph
- Average wind speed in July:
5.2mph - Average wind speed in August:
5mph - Average wind speed in September:
5.5mph - Average wind speed in October:
6.7mph - Average wind speed in November:
7.3mph - Average wind speed in December:
7.8mph
The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity
Old Chatham, NY
The months with the highest relative humidity are February and December (83%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Old Chatham, NY
- Average rainfall in January:
1.1" - Average rainfall in February:
1.22" - Average rainfall in March:
1.42" - Average rainfall in April:
1.77" - Average rainfall in May:
2.05" - Average rainfall in June:
2.05"
- Average rainfall in July:
2.4" - Average rainfall in August:
1.85" - Average rainfall in September:
1.57" - Average rainfall in October:
1.93" - Average rainfall in November:
1.57" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is July (2.4").
The driest month (with the least rainfall) is January (1.1").
Average rainfall days
Old Chatham, NY
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
7.1 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.1 days - Average rainfall days in May:
15.8 days - Average rainfall days in June:
14.7 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
13.4 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
12.3 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (5.7 days).
Average snowfall
Old Chatham, NY
- Average snowfall in January:
3.31" - Average snowfall in February:
3.62" - Average snowfall in March:
3.9" - Average snowfall in April:
0.71" - Average snowfall in May:
0.39" - Average snowfall in June:
0"
The month with the highest snowfall is March (3.9").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Old Chatham, NY
- Average snowfall days in January:
8.3 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
7.8 days - Average snowfall days in April:
2.1 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:
0.6 days - Average snowfall days in November:
2.9 days - Average snowfall days in December:
5.6 days
The month with the highest number of snowfall days is February (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Old Chatham, NY
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
3h and 48min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 54min - Average sunshine in May:
8h and 42min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
10h and 18min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 48min - Average sunshine in October:
5h and 30min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days
Old Chatham, NY
- Average sunshine days in January:
20 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
13.5 days - Average sunshine days in May:
13.1 days - Average sunshine days in June:
12.5 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
16.4 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19 days
The month with the most sunshine days is January (20 days).
The month with the least sunshine days is June (12.5 days).
Average UV index
Old Chatham, NY
The months with the highest UV index are May, 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
Old Chatham, NY
The month with the most cloud cover is February (Cloud cover 58).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility
Old Chatham, NY
The months with the highest visibility are January, April, November and December (6mi).
The months with the lowest visibility are February, March, May, June, July, August, September and October (5mi).
