Weather History for Hilo, HI

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 85 °F 83 °F 80 °F
Mean Temperature 78 °F 76 °F 73 °F
Min Temperature 70 °F 68 °F 65 °F
Degree Days  
Heating Degree Days (base 65) 0 0 0 0
Cooling Degree Days (base 65) 13 11 8 321
Growing Degree Days (base 50) 26 25 22 740
Dew Point  
Dew Point 72 °F 67 °F 57 °F
Precipitation  
Precipitation 0.65 in 0.12 in 0.00 in 3.19 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 22 mph 6 mph 0 mph
Gust Wind 25 mph 18 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.14 in 30.03 in 29.92 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 24, 2012 Rise Set
Actual Time 6:09 AM HST 6:13 PM HST
Civil Twilight 5:47 AM HST 6:35 PM HST
Nautical Twilight 5:22 AM HST 7:01 PM HST
Astronomical Twilight 4:56 AM HST 7:26 PM HST
Moon 2:33 PM HST (9/24) 1:15 AM HST (9/24)
Length of Visible Light 12h 48m
Length of Day
12h 04m
Waxing Gibbous, 73% of the Moon is Illuminated
Sep 24
Waxing Gibbous
Sep 29
Full
Oct 7
Last Quarter
Oct 15
New
Oct 21
First Quarter

Weather History Calendar

Precipitation Actual month total 3.19 Normal Month Total: 9.94
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Rain
Actual:
83 | 68 0.16
Average:
83 | 69 0.30
Rain
Actual:
81 | 68 0.18
Average:
83 | 69 0.30
Rain
Actual:
84 | 67 0.25
Average:
83 | 69 0.31
Rain
Actual:
83 | 68 0.02
Average:
83 | 69 0.31
Rain
Actual:
80 | 67 0.07
Average:
83 | 69 0.32
Rain
Actual:
83 | 67 0.04
Average:
83 | 69 0.33
Rain
Actual:
84 | 66 T
Average:
83 | 69 0.31
Rain
Actual:
84 | 70 0.03
Average:
83 | 69 0.31
Rain
Actual:
81 | 68 0.62
Average:
83 | 69 0.32
Rain
Actual:
82 | 67 0.13
Average:
83 | 69 0.32
Rain
Actual:
84 | 68 0.02
Average:
83 | 69 0.31
Rain
Actual:
83 | 66 0.04
Average:
83 | 69 0.33
Rain
Actual:
81 | 67 0.12
Average:
83 | 69 0.34
Rain
Actual:
83 | 68 T
Average:
83 | 69 0.33
Rain
Actual:
84 | 68 0.08
Average:
83 | 69 0.34
Rain
Actual:
83 | 67 0.03
Average:
83 | 69 0.33
Rain
Actual:
81 | 65 0.20
Average:
83 | 69 0.34
Rain
Actual:
83 | 65 T
Average:
83 | 69 0.34
Rain
Actual:
83 | 66 0.00
Average:
83 | 69 0.34
Partly Cloudy
Actual:
85 | 66 0.00
Average:
83 | 69 0.35
Rain
Actual:
84 | 67 0.03
Average:
83 | 69 0.34
Rain
Actual:
84 | 69 0.03
Average:
83 | 69 0.35
Rain
Actual:
85 | 69 0.12
Average:
83 | 69 0.36
Rain
Actual:
85 | 69 0.07
Average:
83 | 69 0.35
Rain
Actual:
82 | 69 0.11
Average:
83 | 69 0.35
Rain
Actual:
85 | 69 0.05
Average:
83 | 69 0.35
Rain
Actual:
83 | 70 0.65
Average:
83 | 69 0.35
Rain
Actual:
84 | 69 0.09
Average:
83 | 69 0.34
Rain
Actual:
85 | 70 0.02
Average:
83 | 69 0.34
Rain
Actual:
80 | 69 0.03
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

2012 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 83 76 68 69 67 63 90 72 54 30.11 30.08 30.04 10 9 2 15 6 17 0.16 Rain
2 81 75 68 70 67 63 90 76 62 30.12 30.07 30.03 10 9 1 20 5 24 0.18 Rain
3 84 76 67 68 66 63 93 72 51 30.13 30.06 30.02 10 8 2 16 8 18 0.25 Rain
4 83 76 68 69 65 59 90 74 58 30.13 30.08 30.04 10 10 10 13 5 16 0.02 Rain
5 80 74 67 70 66 61 93 80 67 30.12 30.07 30.02 10 9 2 14 5 17 0.07 Rain
6 83 75 67 68 66 62 93 74 55 30.05 30.01 29.96 10 10 10 17 6 21 0.04 Rain
7 84 75 66 69 65 58 90 73 55 30.03 29.99 29.95 10 10 10 16 8 21 T Rain
8 84 77 70 70 68 63 84 73 62 30.11 30.05 29.99 10 9 3 15 6 18 0.03 Rain
9 81 75 68 72 69 64 93 80 67 30.14 30.09 30.05 10 8 2 16 4 20 0.62 Rain
10 82 75 67 69 66 62 93 80 67 30.12 30.08 30.03 10 10 10 22 6 24 0.13 Rain
11 84 76 68 67 65 62 90 74 58 30.08 30.04 29.99 10 10 9 12 5 16 0.02 Rain
12 83 75 66 70 65 61 90 72 54 30.08 30.03 29.99 10 9 4 20 5 23 0.04 Rain
13 81 74 67 70 66 63 100 81 62 30.09 30.05 30.00 10 9 2 17 6 22 0.12 Rain
14 83 76 68 68 65 62 87 71 54 30.10 30.05 29.99 10 10 10 14 6 20 T Rain
15 84 76 68 68 66 64 93 74 55 30.07 30.03 29.98 10 9 3 17 6 23 0.08 Rain
16 83 75 67 68 66 62 90 71 51 30.08 30.05 29.99 10 10 2 16 6 18 0.03 Rain
17 81 73 65 70 66 61 93 78 62 30.07 30.02 29.96 10 8 2 15 7 16 0.20 Rain
18 83 74 65 68 65 57 87 71 54 30.02 29.98 29.92 10 10 8 16 7 21 T Rain
19 83 75 66 72 67 63 93 81 69 30.03 29.98 29.94 10 10 9 10 5 16 0.00 Rain
20 85 76 66 70 68 64 93 77 61 30.07 30.01 29.96 10 10 10 20 6 25 0.00  
21 84 76 67 68 66 61 90 74 58 30.06 30.03 29.96 10 10 5 13 5 17 0.03 Rain
22 84 77 69 70 68 66 90 76 62 30.04 30.01 29.96 10 10 8 12 6 15 0.03 Rain
23 85 77 69 72 70 66 97 79 61 30.06 30.02 29.98 10 9 2 17 6 23 0.12 Rain
24 85 77 69 70 68 66 97 80 62 30.08 30.04 29.98 10 9 2 15 6 18 0.07 Rain
25 82 76 69 70 68 66 97 80 62 30.09 30.04 29.98 10 9 2 17 5 24 0.11 Rain
26 85 77 69 70 68 66 90 78 65 30.08 30.04 29.97 10 8 2 15 6 18 0.05 Rain
27 83 77 70 70 69 65 100 81 62 30.06 30.04 30.00 10 8 2 12 6 16 0.65 Rain
28 84 77 69 70 66 61 90 73 55 30.05 30.01 29.96 10 10 2 20 7 23 0.09 Rain
29 85 78 70 70 66 59 84 68 51 30.05 30.00 29.96 10 10 9 14 7 18 0.02 Rain
30 80 75 69 70 67 65 90 76 62 30.04 29.99 29.94 10 10 4 12 6 14 0.03 Rain