Weather History for Hilo, HI

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 86 °F 84 °F 80 °F
Mean Temperature 78 °F 76 °F 74 °F
Min Temperature 72 °F 68 °F 64 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 13 11 9 339
Growing Degree Days (base 50) 27 25 23 761
Dew Point  
Dew Point 73 °F 66 °F 48 °F
Precipitation  
Precipitation 0.82 in 0.08 in 0.00 in 2.20 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 17 mph 6 mph 0 mph
Gust Wind 24 mph 19 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.15 in 30.04 in 29.87 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 05, 2011 Rise Set
Actual Time 6:05 AM HST 6:31 PM HST
Civil Twilight 5:43 AM HST 6:54 PM HST
Nautical Twilight 5:17 AM HST 7:19 PM HST
Astronomical Twilight 4:51 AM HST 7:46 PM HST
Moon 1:51 PM HST (9/5) 12:09 AM HST (9/5)
Length of Visible Light 13h 10m
Length of Day
12h 26m
Waxing Gibbous, 63% of the Moon is Illuminated
Sep 5
Waxing Gibbous
Sep 11
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

Weather History Calendar

Precipitation Actual month total 2.20 Normal Month Total: 9.94
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
81 | 70 0.18
Average:
83 | 69 0.30
Rain
Actual:
84 | 70 T
Average:
83 | 69 0.30
Rain
Actual:
80 | 68 0.82
Average:
83 | 69 0.31
Scattered Clouds
Actual:
83 | 66 0.00
Average:
83 | 69 0.31
Rain
Actual:
84 | 66 0.00
Average:
83 | 69 0.32
Mostly Cloudy
Actual:
84 | 68 0.00
Average:
83 | 69 0.33
Partly Cloudy
Actual:
84 | 67 0.00
Average:
83 | 69 0.31
Rain
Actual:
85 | 69 0.01
Average:
83 | 69 0.31
Rain
Actual:
85 | 68 T
Average:
83 | 69 0.32
Rain
Actual:
84 | 66 0.01
Average:
83 | 69 0.32
Rain
Actual:
84 | 67 0.00
Average:
83 | 69 0.31
Rain
Actual:
84 | 68 0.03
Average:
83 | 69 0.33
Partly Cloudy
Actual:
85 | 67 0.00
Average:
83 | 69 0.34
Rain
Actual:
86 | 68 0.00
Average:
83 | 69 0.33
Rain
Actual:
82 | 70 0.38
Average:
83 | 69 0.34
Rain
Actual:
84 | 70 0.03
Average:
83 | 69 0.33
Rain
Actual:
85 | 69 0.01
Average:
83 | 69 0.34
Rain
Actual:
83 | 70 0.06
Average:
83 | 69 0.34
Rain
Actual:
86 | 69 0.03
Average:
83 | 69 0.34
Rain
Actual:
85 | 70 0.02
Average:
83 | 69 0.35
Rain
Actual:
83 | 70 0.16
Average:
83 | 69 0.34
Rain
Actual:
83 | 69 0.09
Average:
83 | 69 0.35
Rain
Actual:
82 | 69 0.03
Average:
83 | 69 0.36
Rain
Actual:
84 | 68 0.01
Average:
83 | 69 0.35
Partly Cloudy
Actual:
85 | 66 T
Average:
83 | 69 0.35
Partly Cloudy
Actual:
84 | 64 0.00
Average:
83 | 69 0.35
Rain
Actual:
85 | 68 0.00
Average:
83 | 69 0.35
Rain
Actual:
82 | 72 0.10
Average:
83 | 69 0.34
Rain
Actual:
85 | 71 0.09
Average:
83 | 69 0.34
Rain
Actual:
82 | 70 0.14
Average:
83 | 69 0.33
 

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

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Sep high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 81 76 70 72 70 64 93 81 69 30.13 30.09 30.05 10 8 2 16 4 24 0.18 Rain
2 84 77 70 68 66 63 84 71 58 30.12 30.08 30.03 10 10 10 13 7 16 T Rain
3 80 74 68 70 68 64 97 82 67 30.10 30.06 30.01 10 6 1 17 6 23 0.82 Rain
4 83 75 66 67 64 60 84 68 51 30.07 30.03 29.99 10 10 10 14 7 18 0.00  
5 84 75 66 68 65 57 78 67 55 30.06 30.02 29.96 10 10 6 14 7 17 0.00 Rain
6 84 76 68 68 66 64 90 74 58 30.04 30.00 29.96 10 10 10 10 4 15 0.00  
7 84 76 67 68 65 59 84 71 58 30.03 29.98 29.87 10 10 10 13 6 20 0.00  
8 85 77 69 68 66 63 84 70 55 30.10 30.03 29.97 10 10 9 14 6 18 0.01 Rain
9 85 77 68 67 64 60 84 66 48 30.10 30.06 30.01 10 10 6 14 8 18 T Rain
10 84 75 66 68 65 56 90 73 55 30.06 30.00 29.94 10 10 5 13 5 16 0.01 Rain
11 84 76 67 69 66 61 84 70 55 30.04 29.99 29.94 10 10 2 13 6 17 0.00 Rain
12 84 76 68 70 67 62 84 71 58 30.07 30.01 29.97 10 10 7 13 6 16 0.03 Rain
13 85 76 67 69 66 61 84 72 59 30.13 30.08 30.02 10 10 10 14 6 17 0.00  
14 86 77 68 70 66 57 73 64 55 30.12 30.09 30.06 10 10 10 13 7 15 0.00 Rain
15 82 76 70 73 70 64 94 82 69 30.15 30.10 30.06 10 6 0 14 5 17 0.38 Fog , Rain
16 84 77 70 70 68 65 93 76 58 30.14 30.11 30.06 10 9 2 12 6 16 0.03 Rain
17 85 77 69 69 66 63 84 71 58 30.12 30.09 30.03 10 10 5 15 6 18 0.01 Rain
18 83 77 70 68 66 64 97 78 58 30.11 30.07 30.02 10 8 2 17 7 20 0.06 Rain
19 86 78 69 70 66 63 90 71 51 30.09 30.05 29.98 10 10 4 15 7 18 0.03 Rain
20 85 78 70 70 67 65 90 74 58 30.09 30.05 30.00 10 10 4 14 6 16 0.02 Rain
21 83 77 70 70 67 65 90 74 58 30.07 30.03 29.97 10 10 4 12 6 16 0.16 Rain
22 83 76 69 67 66 63 90 71 51 30.07 30.03 29.98 10 9 2 13 6 15 0.09 Rain
23 82 76 69 66 64 59 90 73 55 30.11 30.06 30.02 10 10 4 15 6 18 0.03 Rain
24 84 76 68 66 64 59 87 71 54 30.10 30.05 29.99 10 10 8 13 6 16 0.01 Rain
25 85 76 66 66 60 52 73 61 48 30.05 30.01 29.96 10 10 10 14 7 17 T  
26 84 74 64 65 60 48 67 58 48 30.06 30.01 29.97 10 10 10 10 8 - 0.00  
27 85 77 68 72 68 59 79 67 55 30.09 30.04 29.99 10 9 4 13 5 18 0.00 Rain
28 82 77 72 72 70 68 93 81 69 30.10 30.05 30.02 10 9 2 12 5 14 0.10 Rain
29 85 78 71 72 68 66 93 76 58 30.06 30.02 29.97 10 9 3 12 6 16 0.09 Rain
30 82 76 70 72 68 66 97 80 62 30.04 30.01 29.96 10 8 2 12 3 15 0.14 Rain