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Chatham, MA 02659 Weather, Forecast, Temperature and Precipitation

Chatham, MA 02659 Weather Related Indexes Graph

2010 Weather Summary Chatham, MA Massachusetts United States
Weather Index 94 58 100
Hail Index 17 76 100
Hurricane Index 195 132 100
Tornado Index 0 49 100
 
Annual Maximum Avg. Temperature 59.0 °F 57.0 °F N/A
Annual Minimum Avg. Temperature 44.0 °F 40.0 °F N/A
Annual Avg. Temperature 51.3 °F 48.2 °F N/A
Annual Heating Degree Days (Tot Degrees < 65) 5,641 6,530 N/A
Annual Cooling Degree Days (Tot Degrees > 65) 678 439 N/A
Percent of Possible Sunshine 58 52 N/A
Mean Sky Cover (Sunrise to Sunset - Out of 10) 6 6 N/A
Mean Number of Days Clear (Out of 365 Days) 98 92 N/A
Mean Number of Days Rain (Out of 365 Days) 127 132 N/A
Mean Number of Days Snow (Out of 365 Days) 11 15 N/A
Avg. Annual Precipitation (Total Inches) 42.00" 47.00" N/A
Avg. Annual Snowfall (Total Inches) 41.00" 59.00" N/A

The data for Chatham, MA may also contain data for the following areas: Chatham

Annual Heating Degree Days (HDD): A form of Degree Day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD that day because 65 - 55 = 10, according to the National Weather Service.

Annual Cooling Degree Days (CDD): A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 75°F on a certain day, there were 10 CDD that day because 75 - 65 = 10, according to the National Weather Service.

Mean Sky Cover: reflects the approximate amount that the sky is covered with clouds, sunrise to sunset on a scale of 0 to 10

Index score: (100 = National Average) for an area is compared to the national average of 100. A score of 200 indicates twice the national average, while 50 indicates half the national average. Note: A higher Weather Index score represents better overall weather (higher number good). A higher Hail, Hurricane or Tornado Index means the chance of that weather event is higher (higher number bad).

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Chatham, MA 02659 2010 Avg. Monthly Low Temperatures

2010 Avg. Monthly Low Temperature Chatham, MA Massachusetts United States
Avg. Annual Low Temperature 43.2 °F 39.0 °F N/A
Avg. January Low Temperature 24.7 °F 16.9 °F N/A
Avg. February Low Temperature 25.3 °F 18.1 °F N/A
Avg. March Low Temperature 31.1 °F 26.9 °F N/A
Avg. April Low Temperature 38.8 °F 36.6 °F N/A
Avg. May Low Temperature 47.1 °F 46.1 °F N/A
Avg. June Low Temperature 55.6 °F 55.8 °F N/A
Avg. July Low Temperature 62.0 °F 61.3 °F N/A
Avg. August Low Temperature 61.8 °F 59.9 °F N/A
Avg. September Low Temperature 56.1 °F 51.4 °F N/A
Avg. October Low Temperature 47.1 °F 40.5 °F N/A
Avg. November Low Temperature 39.0 °F 32.6 °F N/A
Avg. December Low Temperature 29.5 °F 21.7 °F N/A

The data for Chatham, MA may also contain data for the following areas: Chatham

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Chatham, MA 02659 2010 Avg. Monthly High Temperatures

2010 Avg. Monthly High Temperature Chatham, MA Massachusetts United States
Avg. Annual High Temperature 56.3 °F 59.6 °F N/A
Avg. January High Temperature 38.1 °F 35.6 °F N/A
Avg. February High Temperature 38.5 °F 37.4 °F N/A
Avg. March High Temperature 44.0 °F 46.3 °F N/A
Avg. April High Temperature 51.3 °F 57.9 °F N/A
Avg. May High Temperature 60.1 °F 69.2 °F N/A
Avg. June High Temperature 69.3 °F 77.9 °F N/A
Avg. July High Temperature 75.5 °F 82.9 °F N/A
Avg. August High Temperature 75.2 °F 81.1 °F N/A
Avg. September High Temperature 69.4 °F 73.4 °F N/A
Avg. October High Temperature 60.2 °F 63.2 °F N/A
Avg. November High Temperature 51.7 °F 51.3 °F N/A
Avg. December High Temperature 42.6 °F 39.3 °F N/A

The data for Chatham, MA may also contain data for the following areas: Chatham

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Chatham, MA 02659 2010 Avg. Monthly Precipitation

2010 Avg. Monthly Precipitation Chatham, MA Massachusetts United States
Avg. Annual Precipitation 46.88" 46.97" N/A
Avg. January Precipitation 4.40" 4.29" N/A
Avg. February Precipitation 3.76" 3.27" N/A
Avg. March Precipitation 4.25" 3.99" N/A
Avg. April Precipitation 4.17" 4.11" N/A
Avg. May Precipitation 3.49" 3.62" N/A
Avg. June Precipitation 3.27" 3.63" N/A
Avg. July Precipitation 3.39" 3.65" N/A
Avg. August Precipitation 3.59" 3.98" N/A
Avg. September Precipitation 4.08" 3.93" N/A
Avg. October Precipitation 4.16" 4.18" N/A
Avg. November Precipitation 3.77" 4.40" N/A
Avg. December Precipitation 4.55" 3.91" N/A

The data for Chatham, MA may also contain data for the following areas: Chatham

Information is deemed reliable but not guaranteed. Demographic Information FAQ