Weather History for Anchorage, AK

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Sunday, December 18, 2011

  Actual Average Record
Temperature  
Mean Temperature 4 °C -7 °C  
Max Temperature 7 °C -4 °C 7 °C (1993)
Min Temperature 1 °C -11 °C -33 °C (1917)
Degree Days  
Heating Degree Days 25    
Month to date heating degree days 652  
Since 1 July heating degree days 4035  
Cooling Degree Days 0    
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point -2 °C    
Average Humidity 71    
Maximum Humidity 82    
Minimum Humidity 59    
Precipitation  
Precipitation 1.02 mm 1.02 mm 1.02 mm (1919)
Month to date precipitation 1.56 0.68  
Year to date precipitation 16.06 16.15  
Snow  
Snow T cm 1.52 cm 12.45 cm (1959)
Month to date snowfall 13.5 10.1  
Since 1 June snowfall 49.3  
Since 1 July snowfall 49.3 31.5  
Snow Depth 33.02 cm    
Sea Level Pressure  
Sea Level Pressure 982 hPa    
Wind  
Wind Speed 23 km/h (SSE)    
Max Wind Speed 45 km/h    
Max Gust Speed 71 km/h    
Visibility 16 kilometers    
Events Rain , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 18, 2011 Rise Set
Actual Time 10:12 AM AKST 3:41 PM AKST
Civil Twilight 9:10 AM AKST 4:43 PM AKST
Nautical Twilight 8:10 AM AKST 5:43 PM AKST
Astronomical Twilight 7:16 AM AKST 6:36 PM AKST
Moon 1:51 AM AKST (12/18) 12:36 PM AKST (12/18)
Length of Visible Light 7h 33m
Length of Day
5h 29m
Last Quarter, 41% of the Moon is Illuminated
Dec 18
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (AKST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 3.3 °C -2.7 °C -1.7 °C 70% 993.4 hPa 16.1 km SSE 37.0 km/h / 10.3 m/s 53.7 km/h / 14.9 m/s N/A   Overcast
1:53 AM 3.9 °C 0.2 °C -1.7 °C 67% 992.5 hPa 16.1 km SE 16.7 km/h / 4.6 m/s - N/A   Overcast
3:53 AM 1.1 °C -3.9 °C -2.8 °C 75% 986.5 hPa 16.1 km North 20.4 km/h / 5.7 m/s 46.3 km/h / 12.9 m/s N/A   Mostly Cloudy
4:29 AM 7.0 °C 1.7 °C -4.0 °C 46% 986.0 hPa 16.1 km East 44.4 km/h / 12.3 m/s 70.4 km/h / 19.5 m/s N/A   Overcast
4:53 AM 2.2 °C -3.0 °C -2.8 °C 70% 985.6 hPa 16.1 km NW 24.1 km/h / 6.7 m/s 35.2 km/h / 9.8 m/s N/A   Overcast
5:12 AM 4.0 °C -0.4 °C -3.0 °C 61% 984.3 hPa 16.1 km NNW 22.2 km/h / 6.2 m/s 57.4 km/h / 15.9 m/s N/A   Mostly Cloudy
5:53 AM 1.7 °C -3.6 °C -2.8 °C 72% 983.6 hPa 16.1 km NW 24.1 km/h / 6.7 m/s 31.5 km/h / 8.7 m/s 0.0 mm Rain Light Rain
6:53 AM 1.1 °C -1.2 °C -2.2 °C 79% 983.1 hPa 16.1 km NW 7.4 km/h / 2.1 m/s - 0.0 mm   Overcast
7:53 AM 0.6 °C -2.4 °C -1.7 °C 85% 981.7 hPa 16.1 km Variable 9.3 km/h / 2.6 m/s - 0.0 mm Rain Light Rain
8:24 AM 1.0 °C -0.7 °C -1.0 °C 87% 980.6 hPa 11.3 km Variable 5.6 km/h / 1.5 m/s - 0.0 mm Rain Light Rain
8:53 AM 1.7 °C -1.9 °C -1.1 °C 82% 980.1 hPa 16.1 km NNW 13.0 km/h / 3.6 m/s - 0.0 mm Rain Light Rain
9:50 AM 3.0 °C -1.7 °C -1.0 °C 75% 978.6 hPa 16.1 km ENE 22.2 km/h / 6.2 m/s 37.0 km/h / 10.3 m/s 0.0 mm Rain Light Rain
9:53 AM 2.8 °C -1.7 °C -1.1 °C 76% 978.5 hPa 16.1 km East 20.4 km/h / 5.7 m/s - 0.0 mm Rain Light Rain
10:23 AM 4.0 °C -0.4 °C -2.0 °C 65% 977.5 hPa 16.1 km ENE 22.2 km/h / 6.2 m/s 40.7 km/h / 11.3 m/s 0.0 mm   Mostly Cloudy
10:53 AM 3.9 °C -1.2 °C -2.2 °C 65% 977.2 hPa 16.1 km East 27.8 km/h / 7.7 m/s 53.7 km/h / 14.9 m/s 0.0 mm   Mostly Cloudy
11:53 AM 2.8 °C -1.7 °C -1.7 °C 73% 978.2 hPa 16.1 km SSE 20.4 km/h / 5.7 m/s 35.2 km/h / 9.8 m/s N/A   Mostly Cloudy
12:53 PM 2.2 °C -3.4 °C -1.7 °C 76% 976.9 hPa 16.1 km SE 27.8 km/h / 7.7 m/s 37.0 km/h / 10.3 m/s N/A   Mostly Cloudy
1:53 PM 2.2 °C -0.9 °C -2.2 °C 73% 975.4 hPa 16.1 km Variable 11.1 km/h / 3.1 m/s - N/A   Mostly Cloudy
2:53 PM 3.3 °C -1.9 °C -2.8 °C 65% 975.8 hPa 16.1 km South 27.8 km/h / 7.7 m/s 38.9 km/h / 10.8 m/s N/A   Mostly Cloudy
3:12 PM 3.0 °C -3.3 °C -2.0 °C 70% 975.5 hPa 16.1 km SSE 38.9 km/h / 10.8 m/s 57.4 km/h / 15.9 m/s N/A   Mostly Cloudy
3:53 PM 3.3 °C -2.3 °C -1.7 °C 70% 975.6 hPa 16.1 km SSE 31.5 km/h / 8.7 m/s 44.4 km/h / 12.3 m/s N/A   Overcast
4:53 PM 3.3 °C -2.3 °C -1.7 °C 70% 976.3 hPa 16.1 km SSE 31.5 km/h / 8.7 m/s 48.2 km/h / 13.4 m/s N/A   Overcast
5:53 PM 3.9 °C -2.1 °C -1.7 °C 67% 977.4 hPa 16.1 km SE 38.9 km/h / 10.8 m/s 64.8 km/h / 18.0 m/s 0.0 mm Rain Light Rain
6:42 PM 3.0 °C -2.5 °C -1.0 °C 75% 978.9 hPa 16.1 km South 29.6 km/h / 8.2 m/s 57.4 km/h / 15.9 m/s 0.0 mm Rain Light Rain
6:53 PM 2.8 °C -2.0 °C 0.0 °C 82% 979.7 hPa 11.3 km SSE 22.2 km/h / 6.2 m/s 44.4 km/h / 12.3 m/s 0.3 mm Rain , Snow Light Rain
7:53 PM 2.8 °C -3.1 °C -0.6 °C 79% 981.8 hPa 16.1 km South 33.3 km/h / 9.3 m/s 51.9 km/h / 14.4 m/s 0.8 mm Rain Light Rain
8:00 PM 3.0 °C -2.5 °C -1.0 °C 75% 981.9 hPa 16.1 km South 29.6 km/h / 8.2 m/s 51.9 km/h / 14.4 m/s 0.0 mm Rain Light Rain
8:35 PM 3.0 °C -2.8 °C -1.0 °C 75% 983.0 hPa 16.1 km South 33.3 km/h / 9.3 m/s 51.9 km/h / 14.4 m/s 0.0 mm Rain Light Rain
8:53 PM 2.8 °C -2.6 °C -1.7 °C 73% 983.9 hPa 16.1 km South 27.8 km/h / 7.7 m/s 53.7 km/h / 14.9 m/s 0.0 mm   Overcast
9:12 PM 3.0 °C -2.1 °C -2.0 °C 70% 984.3 hPa 16.1 km South 25.9 km/h / 7.2 m/s 46.3 km/h / 12.9 m/s N/A   Overcast
9:53 PM 2.8 °C -2.9 °C -2.2 °C 70% 985.8 hPa 16.1 km South 31.5 km/h / 8.7 m/s 61.1 km/h / 17.0 m/s N/A   Overcast
10:53 PM 2.8 °C -3.2 °C -3.3 °C 65% 987.5 hPa 16.1 km South 35.2 km/h / 9.8 m/s 51.9 km/h / 14.4 m/s N/A   Overcast
11:53 PM 2.0 °C -3.4 °C -4.0 °C 65% 989.1 hPa 16.1 km South 25.9 km/h / 7.2 m/s 44.4 km/h / 12.3 m/s N/A   Overcast