Weather History for Hilo, HI

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Month of December, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 85 °F 79 °F 76 °F
Mean Temperature 76 °F 73 °F 70 °F
Min Temperature 70 °F 66 °F 63 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 11 8 5 243
Growing Degree Days (base 50) 25 22 20 676
Dew Point  
Dew Point 72 °F 65 °F 54 °F
Precipitation  
Precipitation 2.62 in 0.46 in 0.00 in 11.38 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 23 mph 6 mph 0 mph
Gust Wind 29 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.20 in 30.05 in 29.89 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 30, 2012 Rise Set
Actual Time 6:54 AM HST 5:52 PM HST
Civil Twilight 6:30 AM HST 6:15 PM HST
Nautical Twilight 6:03 AM HST 6:43 PM HST
Astronomical Twilight 5:35 AM HST 7:10 PM HST
Moon 8:11 PM HST (12/30) 8:28 AM HST (12/30)
Length of Visible Light 11h 45m
Length of Day
10h 57m
Waning Gibbous, 94% of the Moon is Illuminated
Dec 30
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

Weather History Calendar

Precipitation Actual month total 11.38 Normal Month Total: 11.57
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Partly Cloudy
Actual:
82 | 64 T
Average:
80 | 66 0.42
Partly Cloudy
Actual:
80 | 70 T
Average:
80 | 66 0.42
Partly Cloudy
Actual:
85 | 66 T
Average:
80 | 66 0.40
Scattered Clouds
Actual:
85 | 67 0.00
Average:
80 | 66 0.40
Partly Cloudy
Actual:
82 | 67 0.00
Average:
80 | 66 0.40
Partly Cloudy
Actual:
83 | 68 0.00
Average:
80 | 66 0.40
Rain
Actual:
82 | 65 T
Average:
80 | 66 0.40
Rain
Actual:
82 | 66 0.29
Average:
80 | 66 0.40
Rain
Actual:
77 | 67 0.12
Average:
80 | 66 0.40
Rain
Actual:
80 | 67 0.18
Average:
80 | 65 0.39
Rain
Actual:
79 | 67 T
Average:
80 | 65 0.41
Rain
Actual:
77 | 66 0.15
Average:
79 | 65 0.41
Rain
Actual:
78 | 65 0.24
Average:
79 | 65 0.41
Rain
Actual:
80 | 66 T
Average:
79 | 65 0.40
Rain
Actual:
80 | 63 0.41
Average:
79 | 65 0.39
Rain
Actual:
78 | 67 0.77
Average:
79 | 65 0.37
Rain
Actual:
80 | 66 0.66
Average:
79 | 65 0.36
Rain
Actual:
81 | 64 0.20
Average:
79 | 65 0.37
Rain
Actual:
77 | 63 1.33
Average:
79 | 65 0.37
Rain
Actual:
77 | 68 0.45
Average:
79 | 65 0.37
Rain
Actual:
76 | 65 0.42
Average:
79 | 65 0.36
Rain
Actual:
78 | 64 0.22
Average:
79 | 65 0.36
Rain
Actual:
79 | 65 0.02
Average:
79 | 65 0.35
Rain
Actual:
76 | 67 2.62
Average:
79 | 65 0.35
Rain
Actual:
76 | 67 1.73
Average:
79 | 65 0.34
Rain
Actual:
78 | 64 0.10
Average:
79 | 65 0.33
Rain
Actual:
76 | 65 0.16
Average:
79 | 64 0.32
Rain
Actual:
77 | 65 0.58
Average:
79 | 64 0.32
Rain
Actual:
79 | 63 0.03
Average:
79 | 64 0.31
Rain
Actual:
78 | 68 0.58
Average:
79 | 64 0.32
Rain
Actual:
81 | 66 0.12
Average:
79 | 64 0.32
 

Calendar Legend

Sunny
Clear
Mostly Cloudy
Partly Sunny
Partly Cloudy
Mostly Sunny
Cloudy Rain Snow
Hail
Flurries
Thunderstorms Hazy
Fog
Sleet '?' denotes
'chance of'
Unknown

Daily Weather History & Observations

2012 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 82 73 64 70 65 56 90 75 60 30.08 30.04 29.96 10 10 10 15 6 20 T  
2 80 75 70 70 67 62 93 79 64 30.06 29.99 29.89 10 9 6 15 4 18 T  
3 85 76 66 72 69 63 93 77 61 30.02 29.97 29.91 10 10 7 18 6 22 T  
4 85 76 67 71 67 62 93 77 61 30.07 30.01 29.96 10 10 9 20 7 23 0.00  
5 82 75 67 70 66 62 87 76 65 30.13 30.07 30.02 10 10 10 13 5 18 0.00  
6 83 76 68 66 63 60 84 68 51 30.06 30.00 29.93 10 10 10 17 8 22 0.00  
7 82 74 65 67 64 59 84 68 51 30.01 29.96 29.93 10 10 10 12 6 14 T Rain
8 82 74 66 70 66 57 93 74 54 30.03 29.96 29.92 10 7 2 15 6 18 0.29 Rain
9 77 72 67 70 67 63 93 84 74 30.04 29.99 29.92 10 9 2 14 4 17 0.12 Rain
10 80 74 67 68 65 63 90 75 60 30.08 30.03 29.97 10 10 2 21 7 25 0.18 Rain
11 79 73 67 65 63 59 93 75 56 30.13 30.09 30.03 10 10 3 13 6 15 T Rain
12 77 72 66 66 64 62 93 83 73 30.14 30.10 30.06 10 9 5 17 6 21 0.15 Rain
13 78 72 65 68 64 60 87 78 68 30.19 30.14 30.09 10 9 2 14 5 19 0.24 Rain
14 80 73 66 66 64 61 93 77 60 30.18 30.14 30.09 10 8 2 17 7 21 T Rain
15 80 72 63 65 63 58 93 71 49 30.20 30.15 30.08 10 8 2 16 7 18 0.41 Rain
16 78 73 67 67 65 63 93 79 64 30.17 30.13 30.06 10 8 2 13 5 18 0.77 Rain
17 80 73 66 66 64 61 93 74 54 30.17 30.12 30.06 10 8 2 13 6 20 0.66 Rain
18 81 73 64 64 61 57 93 71 48 30.16 30.11 30.05 10 9 2 17 7 21 0.20 Rain
19 77 70 63 68 64 54 90 72 54 30.09 30.03 30.00 10 6 1 18 6 22 1.33 Rain
20 77 73 68 67 65 62 90 82 73 30.09 30.04 29.99 10 9 2 23 9 29 0.45 Rain
21 76 71 65 64 63 60 93 77 60 30.10 30.06 30.01 10 9 2 18 5 23 0.42 Rain
22 78 71 64 65 62 56 87 76 64 30.12 30.05 29.98 10 9 5 15 6 17 0.22 Rain
23 79 72 65 66 63 59 93 74 54 30.07 30.02 29.94 10 10 7 17 8 22 0.02 Rain
24 76 72 67 70 67 62 93 83 73 30.09 30.01 29.94 10 6 1 21 7 27 2.62 Rain
25 76 72 67 67 66 64 90 80 69 30.10 30.06 30.01 10 8 1 15 7 19 1.73 Rain
26 78 71 64 66 63 58 87 78 69 30.10 30.06 29.99 10 10 7 15 6 20 0.10 Rain
27 76 71 65 65 63 60 87 78 68 30.08 30.02 29.96 10 10 4 14 6 17 0.16 Rain
28 77 71 65 68 64 62 100 85 69 30.03 29.99 29.94 10 8 2 12 5 14 0.58 Rain
29 79 71 63 67 64 58 93 76 58 30.04 30.00 29.94 10 9 5 14 7 18 0.03 Rain
30 78 73 68 72 68 64 97 88 79 30.06 30.01 29.96 10 7 2 18 7 22 0.58 Rain
31 81 74 66 69 66 61 90 74 58 30.10 30.05 29.99 10 8 2 16 6 22 0.12 Rain