Weather History for Chapel Hill, NC

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Month of September, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 93 °F 80 °F 64 °F
Mean Temperature 83 °F 70 °F 60 °F
Min Temperature 73 °F 60 °F 46 °F
Degree Days  
Heating Degree Days (base 65) 4 1 0 17
Cooling Degree Days (base 65) 18 6 0 170
Growing Degree Days (base 50) 33 20 10 595
Dew Point  
Dew Point 74 °F 61 °F 39 °F
Precipitation  
Precipitation 2.61 in 0.35 in 0.00 in 10.57 in
Snowdepth - - - -
Wind  
Wind 17 mph 2 mph 0 mph
Gust Wind 26 mph 21 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.38 in 30.06 in 29.70 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 07, 2012 Rise Set
Actual Time 6:53 AM EDT 7:34 PM EDT
Civil Twilight 6:27 AM EDT 8:00 PM EDT
Nautical Twilight 5:56 AM EDT 8:30 PM EDT
Astronomical Twilight 5:25 AM EDT 9:02 PM EDT
Moon 11:42 PM EDT (9/7) 1:29 PM EDT (9/7)
Length of Visible Light 13h 33m
Length of Day
12h 41m
Waning Gibbous, 58% of the Moon is Illuminated
Sep 7
Waning Gibbous
Sep 8
Last Quarter
Sep 15
New
Sep 22
First Quarter
Sep 29
Full

Weather History Calendar

Precipitation Actual month total 10.57 Average Month Total: 3.23
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
93 | 73 0.00
Average:
87 | 62 0.09
Thunderstorm
Actual:
90 | 71 2.44
Average:
84 | 62 0.05
Thunderstorm
Actual:
88 | 71 1.18
Average:
85 | 62 0.03
Rain
Actual:
88 | 72 0.23
Average:
86 | 62 0.20
Partly Cloudy
Actual:
86 | 73 0.00
Average:
84 | 61 0.20
Thunderstorm
Actual:
88 | 70 2.61
Average:
82 | 60 0.26
Fog
Actual:
86 | 70 0.00
Average:
84 | 59 0.16
Thunderstorm
Actual:
89 | 66 0.39
Average:
84 | 59 0.18
Rain
Actual:
79 | 61 0.03
Average:
82 | 58 0.12
Scattered Clouds
Actual:
78 | 55 0.00
Average:
83 | 60 0.07
Clear
Actual:
78 | 54 0.00
Average:
83 | 58 0.08
Clear
Actual:
80 | 53 0.00
Average:
83 | 57 0.07
Scattered Clouds
Actual:
80 | 53 0.00
Average:
83 | 58 0.08
Scattered Clouds
Actual:
80 | 61 0.00
Average:
82 | 57 0.05
Clear
Actual:
81 | 60 0.00
Average:
83 | 59 0.06
Rain
Actual:
64 | 60 0.21
Average:
83 | 57 0.02
Rain
Actual:
80 | 62 0.08
Average:
81 | 57 0.03
Thunderstorm
Actual:
78 | 68 2.07
Average:
80 | 58 0.12
Rain
Actual:
72 | 55 0.10
Average:
81 | 59 0.03
Clear
Actual:
77 | 54 0.00
Average:
81 | 59 0.20
Scattered Clouds
Actual:
80 | 55 0.00
Average:
81 | 59 0.13
Rain
Actual:
84 | 62 0.09
Average:
80 | 57 0.17
Partly Cloudy
Actual:
75 | 52 0.07
Average:
79 | 54 0.11
Clear
Actual:
72 | 50 0.00
Average:
78 | 52 0.09
Clear
Actual:
75 | 46 0.00
Average:
77 | 54 0.16
Clear
Actual:
81 | 55 0.00
Average:
76 | 54 0.17
Clear
Actual:
84 | 57 0.00
Average:
78 | 54 0.03
Thunderstorm
Actual:
84 | 59 0.59
Average:
79 | 53 0.09
Thunderstorm
Actual:
66 | 60 0.48
Average:
77 | 54 0.04
Partly Cloudy
Actual:
72 | 57 0.00
Average:
75 | 52 0.14
 

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 93 83 73 72 71 68 91 71 45 30.13 30.08 30.04 10 10 10 13 3 18 0.00  
2 90 78 71 74 71 68 97 83 63 30.07 30.03 29.93 10 7 0 17 3 25 2.44 Fog , Rain , Thunderstorm
3 88 79 71 74 71 69 96 87 63 30.07 30.02 29.97 10 7 1 9 3 21 1.18 Rain , Thunderstorm
4 88 80 72 72 70 66 93 82 49 30.05 30.00 29.92 10 8 2 6 2 - 0.23 Rain
5 86 78 73 72 70 68 91 79 61 29.97 29.92 29.86 10 9 6 7 2 - 0.00  
6 88 78 70 73 71 68 97 86 62 29.99 29.93 29.88 10 6 0 14 2 20 2.61 Fog , Rain , Thunderstorm
7 86 77 70 71 68 67 97 82 55 30.01 29.95 29.87 10 8 0 7 2 - 0.00 Fog
8 89 77 66 72 68 65 97 87 53 29.86 29.80 29.70 10 5 0 13 2 25 0.39 Fog , Rain , Thunderstorm
9 79 70 61 66 58 52 90 73 40 29.98 29.90 29.83 10 10 8 9 4 - 0.03 Rain
10 78 66 55 57 53 50 87 63 39 30.17 30.08 30.00 10 10 10 9 4 - 0.00  
11 78 66 54 57 53 48 93 68 40 30.32 30.27 30.19 - - - 7 1 - 0.00  
12 80 66 53 56 53 49 93 69 37 30.38 30.33 30.29 10 10 10 8 1 - 0.00  
13 80 66 53 61 55 49 96 72 36 30.37 30.31 30.26 10 10 10 8 2 - 0.00  
14 80 70 61 66 63 59 97 80 60 30.28 30.21 30.16 10 10 5 6 1 - 0.00  
15 81 70 60 63 61 57 93 76 54 30.19 30.15 30.12 10 10 2 10 3 - 0.00  
16 64 62 60 59 57 56 93 86 78 30.20 30.16 30.10 10 9 4 7 2 - 0.21 Rain
17 80 70 62 69 64 58 97 87 66 30.14 30.06 29.96 10 8 0 6 2 - 0.08 Fog , Rain
18 78 72 68 72 69 64 97 91 82 29.92 29.79 29.73 10 6 0 16 5 26 2.07 Fog , Rain , Thunderstorm
19 72 63 55 67 58 53 96 77 53 30.15 30.02 29.84 10 10 10 9 3 - 0.10 Rain
20 77 64 54 60 55 51 93 75 48 30.19 30.12 30.06 10 10 10 6 1 - 0.00  
21 80 68 55 62 59 54 96 77 50 30.11 30.05 30.00 10 10 6 6 1 - 0.00  
22 84 73 62 65 62 59 90 72 51 30.01 29.96 29.88 10 10 5 8 2 - 0.09 Rain
23 75 63 52 63 50 39 93 65 28 30.13 30.08 29.99 10 10 10 8 3 - 0.07  
24 72 61 50 51 46 42 93 66 38 30.25 30.19 30.14 10 10 10 8 3 - 0.00  
25 75 60 46 60 52 44 93 75 46 30.26 30.22 30.16 10 10 10 7 1 - 0.00  
26 81 68 55 64 58 52 90 75 50 30.23 30.19 30.15 10 10 10 6 1 - 0.00  
27 84 70 57 62 58 54 97 75 38 30.20 30.15 30.09 10 8 2 6 1 - 0.00  
28 84 70 59 65 62 57 93 81 51 30.10 30.05 29.99 10 9 1 8 1 24 0.59 Rain , Thunderstorm
29 66 63 60 64 60 57 94 92 87 30.02 29.96 29.91 10 8 2 8 3 - 0.48 Rain , Thunderstorm
30 72 64 57 58 56 54 97 84 55 29.95 29.92 29.86 10 7 2 7 3 - 0.00