Weather History for Hilo, HI

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Thursday, December 16, 2010

  Actual Average Record
Temperature  
Mean Temperature 74 °F 72 °F  
Max Temperature 81 °F 79 °F 87 °F (1968)
Min Temperature 66 °F 65 °F 59 °F (1955)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 9 7  
Month to date cooling degree days 121 121  
Year to date cooling degree days 3151 3128  
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 61 °F    
Average Humidity 70    
Maximum Humidity 81    
Minimum Humidity 58    
Precipitation  
Precipitation 0.00 in 0.37 in 3.72 in (1990)
Month to date precipitation 5.12 6.42  
Year to date precipitation 61.28 121.57  
Snow  
Snow 0.00 in - - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.96 in    
Wind  
Wind Speed 8 mph (SSW)    
Max Wind Speed 15 mph    
Max Gust Speed 20 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 16, 2010 Rise Set
Actual Time 6:47 AM HST 5:44 PM HST
Civil Twilight 6:23 AM HST 6:08 PM HST
Nautical Twilight 5:56 AM HST 6:35 PM HST
Astronomical Twilight 5:29 AM HST 7:02 PM HST
Moon 2:09 PM HST (12/16) 2:33 AM HST (12/16)
Length of Visible Light 11h 44m
Length of Day
10h 56m
Waxing Gibbous, 80% of the Moon is Illuminated
Dec 16
Waxing Gibbous
Dec 20
Full
Dec 27
Last Quarter
Jan 3
New
Jan 12
First Quarter

Hourly Weather History & Observations

Time (HST) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:53 AM 69.1 °F - 59.0 °F 70% 30.00 in 10.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
1:32 AM 69.8 °F - 59.0 °F 68% 30.00 in 10.0 mi SW 6.9 mph - N/A   Overcast
1:43 AM 69.8 °F - 59.0 °F 68% 30.00 in 10.0 mi SW 6.9 mph - N/A   Overcast
1:53 AM 69.1 °F - 59.0 °F 70% 29.99 in 10.0 mi SW 6.9 mph - N/A   Overcast
2:53 AM 69.1 °F - 59.0 °F 70% 29.98 in 10.0 mi WSW 8.1 mph - N/A   Overcast
3:53 AM 68.0 °F - 59.0 °F 73% 29.97 in 10.0 mi WSW 6.9 mph - N/A   Scattered Clouds
4:53 AM 68.0 °F - 55.0 °F 63% 29.98 in 10.0 mi WSW 6.9 mph - N/A   Overcast
5:53 AM 68.0 °F - 54.0 °F 61% 29.99 in 10.0 mi WSW 3.5 mph - N/A   Overcast
6:53 AM 66.0 °F - 54.0 °F 65% 30.00 in 10.0 mi SW 5.8 mph - N/A   Scattered Clouds
7:53 AM 69.1 °F - 55.9 °F 63% 30.00 in 10.0 mi WSW 6.9 mph - N/A   Scattered Clouds
8:53 AM 75.9 °F - 61.0 °F 60% 30.01 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
9:53 AM 77.0 °F - 64.9 °F 66% 29.99 in 10.0 mi SSE 8.1 mph - N/A   Scattered Clouds
10:53 AM 79.0 °F - 64.9 °F 62% 29.97 in 10.0 mi ESE 10.4 mph - N/A   Scattered Clouds
11:53 AM 80.1 °F 82.1 °F 66.0 °F 62% 29.95 in 10.0 mi SE 11.5 mph 16.1 mph N/A   Scattered Clouds
12:53 PM 79.0 °F - 64.9 °F 62% 29.92 in 10.0 mi East 13.8 mph 18.4 mph N/A   Scattered Clouds
1:53 PM 79.0 °F - 64.9 °F 62% 29.91 in 10.0 mi ESE 13.8 mph - N/A   Scattered Clouds
2:53 PM 79.0 °F - 62.1 °F 56% 29.89 in 10.0 mi SE 11.5 mph 18.4 mph N/A   Scattered Clouds
3:53 PM 79.0 °F - 61.0 °F 54% 29.89 in 10.0 mi SE 9.2 mph - N/A   Scattered Clouds
4:53 PM 75.9 °F - 63.0 °F 64% 29.90 in 10.0 mi SE 11.5 mph - N/A   Overcast
5:53 PM 73.0 °F - 64.0 °F 73% 29.92 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
6:53 PM 71.1 °F - 62.1 °F 73% 29.94 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
7:53 PM 68.0 °F - 62.1 °F 81% 29.96 in 10.0 mi SSW 3.5 mph - N/A   Clear
8:53 PM 68.0 °F - 61.0 °F 78% 29.97 in 10.0 mi SSW 4.6 mph - N/A   Clear
9:53 PM 66.9 °F - 61.0 °F 81% 29.97 in 10.0 mi SSW 4.6 mph - N/A   Clear
10:53 PM 66.0 °F - 61.0 °F 84% 29.97 in 10.0 mi WSW 5.8 mph - N/A   Partly Cloudy
11:53 PM 66.9 °F - 60.1 °F 79% 29.97 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds