Climate and monthly weather forecastChatham, NY
Climate and monthly weather forecast
Weather in January
January, the same as December, in Chatham, New York, is a freezing cold winter month, with an average temperature varying between 29.1°F (-1.6°C) and 16.7°F (-8.5°C). Chatham's January weather, marked by an average high temperature of 29.1°F (-1.6°C) and an average low temperature of 16.7°F (-8.5°C), is the coldest in the year. Weather in January »Weather in February
The last month of the winter, February, is a wintry month in Chatham, New York, with an average temperature varying between 32.5°F (0.3°C) and 18°F (-7.8°C). The beginning of February records an average high-temperature of an icy 32.5°F (0.3°C), almost echoing the conditions of the previous month. Weather in February »Weather in March
The first month of the spring, March, is also a wintry month in Chatham, New York, with an average temperature varying between 25.7°F (-3.5°C) and 41.2°F (5.1°C). March witnesses a subtle temperature ascent, adjusting from a wintry 32.5°F (0.3°C) in February to a still cold 41.2°F (5.1°C). Weather in March »Weather in April
April in Chatham, New York, is a cool spring month, with an average temperature ranging between max 54.3°F (12.4°C) and min 36.1°F (2.3°C). Chatham's transition into April brings a rise in the average high-temperature, moving from an icy 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 Chatham, is a comfortable month, with an average temperature fluctuating between 67.3°F (19.6°C) and 46.6°F (8.1°C). May signals a shift in the average high-temperature, moving from April's 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 warm month in Chatham, New York, with an average temperature fluctuating between 53.2°F (11.8°C) and 74.8°F (23.8°C). Chatham's transition into June is marked by a minor temperature shift, moving from a comfortable 67.3°F (19.6°C) in May to a moderately hot 74.8°F (23.8°C). Weather in June »Weather in July
July, like June, in Chatham, New York, is another warm summer month, with an average temperature varying between 80.8°F (27.1°C) and 59°F (15°C). The temperatures reach their highest averages in July, with highs of 80.8°F (27.1°C) and lows of 59°F (15°C). July's mean heat index is computed to be a tropical 86°F (30°C). Weather in July »Weather in August
August, the last month of the summer in Chatham, is another warm month, with an average temperature ranging between max 78.8°F (26°C) and min 57.2°F (14°C). Chatham, New York, sees the arrival of August with an average high-temperature of a still moderately hot 78.8°F (26°C), indicating a subtle variation from July. Weather in August »Weather in September
The first month of the autumn, September, is still a pleasant month in Chatham, New York, with an average temperature ranging between min 51.1°F (10.6°C) and max 71.2°F (21.8°C). A mild shift in the average high-temperature occurs in September, reducing from a warm 78.8°F (26°C) in August to an agreeable 71.2°F (21.8°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Chatham, New York, with an average temperature fluctuating between 58.1°F (14.5°C) and 42.8°F (6°C). The average high-temperature decreases in October, shifting from a pleasant 71.2°F (21.8°C) in September to a mild 58.1°F (14.5°C). Weather in October »Weather in November
November, the last month of the autumn in Chatham, is also a frosty month, with an average temperature ranging between min 32°F (0°C) and max 45.5°F (7.5°C). The onset of November brings a small change in high-temperatures, falling from a moderate 58.1°F (14.5°C) in October to a frosty 45.5°F (7.5°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Chatham, New York, with temperature in the range of an average low of 24.1°F (-4.4°C) and an average high of 34.9°F (1.6°C). Welcoming December, Chatham observes a shift in the average high-temperature, falling from November's frosty 45.5°F (7.5°C) to a wintry 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 high-temperature average of 29.1°F (-1.6°C) and a low-temperature average of 16.7°F (-8.5°C), is the coldest month.
January is the month with the least rainfall in Chatham, New York. Rain falls for 5.7 days and accumulates 1.1" (28mm) of precipitation.
Throughout the year, there are 135.1 rainfall days, and 20.39" (518mm) of precipitation is accumulated.
Months with snowfall in Chatham are January through May, October through December.
In Chatham, during the entire year, snow falls for 36.9 days and aggregates up to 15.98" (406mm) of snow.
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Chatham, New York.
The months with the highest humidity in Chatham, New York, are February and December, with an average relative humidity of 83%.
With an average of 3.8h of sunshine, February has the least sunshine of the year in Chatham.
March is the month with the most snowfall. Snow falls for 7.8 days and accumulates 3.9" (99mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in 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.
April is the least humid month in Chatham, with an average relative humidity of 75%.
The months with the highest UV index in Chatham, New York, are May through August, with an average maximum UV index of 5.
June through September are months without snowfall.
June has the longest days of the year, with an average of 15h and 12min of daylight.
The highest temperatures are recorded in July, with averages reaching a high of 80.8°F (27.1°C) and a low of 59°F (15°C).
The month with the most rainfall in Chatham, New York, is July, when the rain falls for 14.9 days and typically aggregates up to 2.4" (61mm) of precipitation.
July and August, with an average of 10.3h of sunshine, are months with the most sunshine in Chatham, New York.
With an average of 9h and 6min of daylight, December has the shortest days of the year in Chatham, New York.
Average temperature
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
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
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
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
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
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
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
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
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 48min - 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
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
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
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
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).
