Weather History for Chatham, MA

Change the Weather History Date:

Friday, July 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 68 °F -  
Max Temperature 72 °F 74 °F 89 °F (2005)
Min Temperature 63 °F 61 °F 51 °F (2000)
Cooling Degree Days 2    
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 58 °F    
Average Humidity 72    
Maximum Humidity 90    
Minimum Humidity 57    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 3 mph (East)    
Max Wind Speed 10 mph    
Max Gust Speed -    
Visibility 10 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jul. 20, 2012 Rise Set
Actual Time 5:23 AM EDT 8:08 PM EDT
Civil Twilight 4:50 AM EDT 8:41 PM EDT
Nautical Twilight 4:09 AM EDT 9:22 PM EDT
Astronomical Twilight 3:22 AM EDT 10:08 PM EDT
Moon 6:59 AM EDT (7/20) 8:44 PM EDT (7/20)
Length of Visible Light 15h 50m
Length of Day
14h 45m
New Moon, 2% of the Moon is Illuminated
Jul 20
New Moon
Jul 26
First Quarter
Aug 1
Full
Aug 9
Last Quarter
Aug 17
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 64.9 °F 61.0 °F 87% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:52 AM 64.9 °F 62.1 °F 90% 30.03 in 10.0 mi Calm Calm - N/A   Clear
2:52 AM 64.0 °F 61.0 °F 90% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 64.9 °F 62.1 °F 90% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
4:52 AM 66.0 °F 63.0 °F 90% 30.04 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:52 AM 66.9 °F 63.0 °F 87% 30.04 in 10.0 mi NNE 3.5 mph - N/A   Clear
6:52 AM 68.0 °F 61.0 °F 78% 30.05 in 10.0 mi East 3.5 mph - 0.00 in Rain Light Rain
8:52 AM 71.1 °F 57.0 °F 61% 30.07 in 10.0 mi ENE 9.2 mph - N/A   Clear
9:52 AM 71.1 °F 57.0 °F 61% 30.08 in 10.0 mi East 9.2 mph - N/A   Mostly Cloudy
10:52 AM 72.0 °F 55.9 °F 57% 30.09 in 10.0 mi ENE 9.2 mph - N/A   Clear
11:52 AM 72.0 °F 57.0 °F 59% 30.08 in 10.0 mi East 6.9 mph - N/A   Clear
12:52 PM 71.1 °F 55.9 °F 59% 30.08 in 10.0 mi ESE 8.1 mph - N/A   Clear
1:52 PM 70.0 °F 57.0 °F 63% 30.06 in 10.0 mi ESE 10.4 mph - N/A   Partly Cloudy
2:52 PM 70.0 °F 59.0 °F 68% 30.07 in 10.0 mi ESE 5.8 mph - N/A   Clear
3:52 PM 70.0 °F 57.0 °F 63% 30.07 in 10.0 mi East 4.6 mph - N/A   Clear
4:52 PM 66.9 °F 55.0 °F 66% 30.06 in 10.0 mi SE 3.5 mph - N/A   Mostly Cloudy
5:52 PM 66.9 °F 55.0 °F 66% 30.06 in 10.0 mi Calm Calm - 0.00 in   Overcast
6:52 PM 68.0 °F 55.0 °F 63% 30.07 in 10.0 mi Calm Calm - N/A   Clear
7:52 PM 66.9 °F 55.0 °F 66% 30.07 in 10.0 mi East 4.6 mph - N/A   Clear
8:52 PM 66.9 °F 55.9 °F 68% 30.08 in 10.0 mi Calm Calm - N/A   Clear
9:52 PM 63.0 °F 55.9 °F 78% 30.09 in 10.0 mi Calm Calm - N/A   Clear
10:52 PM 64.0 °F 57.0 °F 78% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:52 PM 66.9 °F 54.0 °F 63% 30.07 in 10.0 mi ENE 3.5 mph - N/A   Clear