Central Square - Cambridge, Massachusetts
42° 21.82' N - 071° 06.48' W - 20 feet
Tuesday December 18 20:45:00 2018
Station
Time: 20:45
Date: 18 Dec 2018
Latitude: 42° 21.82' N
Longitude: 071° 06.48' W
Elevation: 20 feet
Daylight: 09:06
Sun
Start civil twilight: 06:35
Sunrise: 07:07
Transit: 11:41
Sunset: 16:14
End civil twilight: 16:46
Azimuth: 283.3°
Altitude: -49.0°
Right ascension: 266.8°
Declination: -23.4°
Solstice: 12/21/2018 05:22:34 PM
Equinox: 03/20/2019 05:58:31 PM
Moon
Rise: 13:42
Transit: 20:26
Set: 02:13
Azimuth: 188.3°
Altitude: 56.5°
Right ascension: 38.1°
Declination: 9.1°
Full moon: 12/22/2018 12:48:35 PM
New moon: 01/05/2019 08:28:11 PM
Phase: Waxing Gibbous
83% full
Temperature (°F)
Current: 26.6
Day Average: 29.0
Day High: 37.9 at 00:00
Day Low: 24.7 at 05:41
Week Average: 36.5
Week High: 44.1 at 10:13:59 AM Sunday
Week Low: 24.7 at 05:41:51 AM Tuesday
Month Average: 35.0
Month High: 56.9 on 12/03/2018
Month Low: 19.2 on 12/08/2018
Year Average: 53.6
Year High: 98.9 on 07/03/2018
Year Low: -2.6 on 01/07/2018
All Time Average: 53.7
All Time High: 103.6 on 07/22/2011
All Time Low: -8.6 on 02/14/2016
Humidity (%)
Current: 58
Day Average: 56
Day High: 84 at 01:14
Day Low: 45 at 12:47
Week Average: 74
Week High: 94 at 10:46:14 PM Sunday
Week Low: 45 at 12:47:08 PM Tuesday
Month Average: 65
Month High: 97 on 12/03/2018
Month Low: 28 on 12/08/2018
Year Average: 70
Year High: 98 on 01/23/2018
Year Low: 14 on 04/22/2018
All Time Average: 64
All Time High: 100 on 05/17/2011
All Time Low: 8 on 03/30/2007
Dew Point (°F)
Current: 13.8
Day Average: 15.0
Day High: 30.4 at 00:00
Day Low: 11.3 at 06:08
Week Average: 28.5
Week High: 39.0 at 06:40:54 PM Sunday
Week Low: 11.3 at 06:08:27 AM Tuesday
Month Average: 28.5
Month High: 51.2 on 12/03/2018
Month Low: 0.0 on 12/08/2018
Year Average: 43.1
Year High: 79.5 on 07/03/2018
Year Low: -13.1 on 01/07/2018
All Time Average: 40.5
All Time High: 90.5 on 07/01/2009
All Time Low: -27.8 on 02/14/2016
Wind Chill (°F)
Current: 19.0
Day Low: 7.2 at 06:07
Week Low: 7.2 at 06:07:15 AM Tuesday
Month Low: 7.2 on 12/18/2018
Year Low: -26.5 on 01/07/2018
All Time Low: -26.5 on 01/07/2018
Heat Index (°F)
Current: 26.6
Day High: 37.9 at 00:00
Week High: 44.1 at 10:13:59 AM Sunday
Month High: 56.9 on 12/03/2018
Year High: 111.0 on 07/03/2018
All Time High: 111.9 on 08/02/2006
Barometer ( inHg)
Current: 30.002
Day Average: 29.780
Day High: 30.002 at 20:41
Day Low: 29.501 at 00:30
Week Average: 29.788
Week High: 30.210 at 12:00:04 AM Sunday
Week Low: 29.485 at 03:43:03 PM Monday
Month Average: 30.048
Month High: 30.552 on 12/14/2018
Month Low: 29.461 on 12/03/2018
Year Average: 30.004
Year High: 30.812 on 02/13/2018
Year Low: 28.838 on 01/04/2018
All Time Average: 29.962
All Time High: 31.100 on 01/04/2015
All Time Low: 28.703 on 02/25/2010
Wind ( mph)
Current: 7 WNW
Day Average: 9 WNW
Day High: 33 at 05:01
Week Average: 6 NW
Week High: 33 at 05:01:25 AM Tuesday
Month Average: 3 WNW
Month High: 33 on 12/18/2018
Year Average: 3 WNW
Year High: 44 on 03/02/2018
All Time Average: 3 WNW
All Time High: 46 on 03/02/2017
Rain ( in - in/hr)
Rate: 0.00
Day: 0.00
Day High Rate: 0.00 at 00:00
Week: 0.39
Week High Rate: 0.84 at 10:31:34 PM Sunday
Month: 0.42
Month High Rate: 0.84 on 12/16/2018
Year: 30.75
Year High Rate: 8.47 on 01/13/2018
All Time High Rate: 12.52 on 07/10/2010