Weather History for Boise, ID

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Monday, December 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 38 °F 30 °F  
Max Temperature 49 °F 37 °F 55 °F (1917)
Min Temperature 27 °F 23 °F -2 °F (1985)
Degree Days  
Heating Degree Days 27 35  
Month to date heating degree days 418 568  
Since 1 July heating degree days 1398 1822  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1274 942  
Moisture  
Dew Point 27 °F    
Average Humidity 54    
Maximum Humidity 70    
Minimum Humidity 37    
Precipitation  
Precipitation 0.01 in 0.05 in 1.14 in (1884)
Month to date precipitation 0.91 0.84  
Year to date precipitation 11.38 11.02  
Snow  
Snow 0.00 in 0.20 in 4.80 in (1945)
Month to date snowfall 1.2 3.5  
Since 1 July snowfall 1.2 6.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.72 in    
Wind  
Wind Speed 14 mph (West)    
Max Wind Speed 30 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 17, 2012 Rise Set
Actual Time 8:13 AM MST 5:09 PM MST
Civil Twilight 7:40 AM MST 5:42 PM MST
Nautical Twilight 7:03 AM MST 6:18 PM MST
Astronomical Twilight 6:29 AM MST 6:53 PM MST
Moon 11:16 AM MST (12/17) 10:45 PM MST (12/17)
Length of Visible Light 10h 02m
Length of Day
8h 56m
Waxing Crescent, 25% of the Moon is Illuminated
Dec 17
Waxing Crescent
Dec 19
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (MST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 43.0 °F 33.8 °F 33.1 °F 68% 29.57 in 10.0 mi ESE 23.0 mph 28.8 mph N/A   Mostly Cloudy
1:53 AM 44.1 °F 35.9 °F 33.1 °F 65% 29.54 in 10.0 mi ESE 19.6 mph - N/A   Overcast
2:53 AM 45.0 °F 38.2 °F 33.1 °F 63% 29.53 in 10.0 mi SE 15.0 mph 25.3 mph N/A   Overcast
3:53 AM 45.0 °F 39.7 °F 33.1 °F 63% 29.52 in 10.0 mi SSE 10.4 mph - N/A   Overcast
4:53 AM 48.0 °F - 35.1 °F 61% 29.53 in 10.0 mi WSW 26.5 mph 36.8 mph N/A   Overcast
5:53 AM 46.0 °F 41.9 °F 36.0 °F 68% 29.54 in 10.0 mi NW 8.1 mph - 0.00 in   Overcast
6:53 AM 46.9 °F - 33.1 °F 59% 29.58 in 10.0 mi West 21.9 mph 29.9 mph 0.00 in   Scattered Clouds
7:53 AM 45.0 °F 38.2 °F 32.0 °F 60% 29.60 in 10.0 mi West 15.0 mph - N/A   Overcast
8:53 AM 44.1 °F 37.1 °F 30.0 °F 58% 29.64 in 10.0 mi West 15.0 mph 23.0 mph N/A   Mostly Cloudy
9:53 AM 44.1 °F 37.4 °F 28.9 °F 55% 29.66 in 10.0 mi West 13.8 mph 23.0 mph N/A   Clear
10:53 AM 45.0 °F 38.2 °F 30.9 °F 58% 29.69 in 10.0 mi West 15.0 mph 24.2 mph N/A   Scattered Clouds
11:53 AM 46.9 °F - 28.0 °F 48% 29.70 in 10.0 mi West 17.3 mph 27.6 mph N/A   Partly Cloudy
12:53 PM 46.9 °F - 27.0 °F 46% 29.70 in 10.0 mi West 18.4 mph 28.8 mph N/A   Scattered Clouds
1:53 PM 46.9 °F - 24.1 °F 41% 29.73 in 10.0 mi WNW 24.2 mph 32.2 mph N/A   Partly Cloudy
2:53 PM 46.0 °F 37.6 °F 21.9 °F 39% 29.73 in 10.0 mi West 24.2 mph 32.2 mph N/A   Clear
5:53 PM 39.9 °F 34.5 °F 21.0 °F 47% 29.81 in 10.0 mi West 8.1 mph - N/A   Clear
6:53 PM 37.9 °F 31.5 °F 21.0 °F 51% 29.84 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
7:53 PM 36.0 °F 30.3 °F 21.0 °F 55% 29.87 in 10.0 mi West 6.9 mph - N/A   Clear
8:53 PM 33.1 °F 27.7 °F 21.9 °F 64% 29.91 in 10.0 mi NW 5.8 mph - N/A   Clear
9:53 PM 33.1 °F 27.7 °F 19.0 °F 56% 29.92 in 10.0 mi West 5.8 mph - N/A   Clear
10:53 PM 30.9 °F - 19.0 °F 61% 29.94 in 10.0 mi Calm Calm - N/A   Clear
11:53 PM 27.0 °F 23.0 °F 19.0 °F 72% 29.96 in 10.0 mi SE 3.5 mph - N/A   Scattered Clouds