Weather History for Livermore, CA

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Month of September, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 102 °F 84 °F 72 °F
Mean Temperature 83 °F 71 °F 63 °F
Min Temperature 65 °F 58 °F 47 °F
Degree Days  
Heating Degree Days (base 65) 2 0 0 4
Cooling Degree Days (base 65) 18 6 0 185
Growing Degree Days (base 50) 32 20 12 614
Dew Point  
Dew Point 62 °F 52 °F 23 °F
Precipitation  
Precipitation 0.46 in 0.02 in 0.00 in 0.47 in
Snowdepth - - - -
Wind  
Wind 23 mph 7 mph 0 mph
Gust Wind 28 mph 20 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.10 in 29.90 in 29.68 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Sep. 02, 2013 Rise Set
Actual Time 6:38 AM PDT 7:34 PM PDT
Civil Twilight 6:11 AM PDT 8:01 PM PDT
Nautical Twilight 5:39 AM PDT 8:32 PM PDT
Astronomical Twilight 5:07 AM PDT 9:05 PM PDT
Moon 4:02 AM PDT (9/2) 5:49 PM PDT (9/2)
Length of Visible Light 13h 49m
Length of Day
12h 55m
Waning Crescent, 7% of the Moon is Illuminated
Sep 2
Waning Crescent
Sep 5
New
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter

Weather History Calendar

Precipitation Actual month total 0.47 Normal Month Total: 0.22
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Scattered Clouds
Actual:
88 | 62 0.00
Average:
87 | 57 0.00
Partly Cloudy
Actual:
87 | 65 0.01
Average:
87 | 57 0.00
Scattered Clouds
Actual:
82 | 61 0.00
Average:
86 | 57 0.01
Scattered Clouds
Actual:
83 | 61 0.00
Average:
86 | 57 0.00
Scattered Clouds
Actual:
83 | 61 0.00
Average:
86 | 57 0.00
Clear
Actual:
93 | 54 0.00
Average:
86 | 57 0.00
Clear
Actual:
100 | 58 0.00
Average:
86 | 57 0.01
Clear
Actual:
100 | 61 0.00
Average:
86 | 57 0.00
Clear
Actual:
102 | 63 0.00
Average:
86 | 57 0.01
Clear
Actual:
85 | 62 0.00
Average:
86 | 56 0.00
Scattered Clouds
Actual:
80 | 59 0.00
Average:
85 | 56 0.01
Partly Cloudy
Actual:
85 | 62 0.00
Average:
85 | 56 0.00
Partly Cloudy
Actual:
86 | 59 0.00
Average:
85 | 56 0.01
Partly Cloudy
Actual:
75 | 57 0.00
Average:
85 | 56 0.00
Partly Cloudy
Actual:
83 | 58 0.00
Average:
85 | 56 0.01
Partly Cloudy
Actual:
86 | 61 0.00
Average:
85 | 56 0.00
Scattered Clouds
Actual:
78 | 59 0.00
Average:
84 | 56 0.00
Clear
Actual:
87 | 54 0.00
Average:
84 | 55 0.01
Clear
Actual:
94 | 52 0.00
Average:
84 | 55 0.00
Partly Cloudy
Actual:
78 | 56 0.00
Average:
84 | 55 0.01
Rain
Actual:
72 | 58 0.46
Average:
83 | 55 0.01
Scattered Clouds
Actual:
76 | 54 0.00
Average:
83 | 55 0.01
Clear
Actual:
85 | 54 0.00
Average:
83 | 55 0.00
Clear
Actual:
77 | 59 0.00
Average:
83 | 54 0.01
Scattered Clouds
Actual:
72 | 53 0.00
Average:
82 | 54 0.01
Clear
Actual:
78 | 47 0.00
Average:
82 | 54 0.01
Clear
Actual:
80 | 49 0.00
Average:
82 | 54 0.01
Clear
Actual:
87 | 50 0.00
Average:
82 | 54 0.02
Clear
Actual:
80 | 56 0.00
Average:
81 | 53 0.03
Partly Cloudy
Actual:
78 | 60 0.00
Average:
81 | 53 0.03
 

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

2013 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 88 75 62 60 56 52 84 58 31 29.93 29.90 29.85 10 10 10 22 10 25 0.00  
2 87 76 65 62 60 56 81 58 35 29.96 29.92 29.88 10 10 10 20 9 23 0.01  
3 82 72 61 58 54 46 84 56 28 29.99 29.96 29.93 10 10 10 20 9 23 0.00  
4 83 72 61 58 55 51 84 59 34 30.02 29.98 29.94 10 10 10 18 10 24 0.00  
5 83 72 61 57 55 49 78 56 33 30.01 29.98 29.94 10 10 10 17 9 22 0.00  
6 93 74 54 56 48 42 86 52 18 29.99 29.91 29.81 10 10 10 16 4 22 0.00  
7 100 79 58 47 44 40 57 36 14 29.87 29.83 29.77 10 10 10 18 4 22 0.00  
8 100 81 61 53 49 45 57 38 18 29.86 29.80 29.73 10 10 10 15 4 20 0.00  
9 102 83 63 52 48 41 60 39 17 29.80 29.74 29.68 10 10 10 21 5 24 0.00  
10 85 74 62 58 56 52 84 61 37 29.88 29.78 29.72 10 10 10 21 10 26 0.00  
11 80 70 59 58 56 54 78 62 45 29.98 29.94 29.88 10 10 10 20 10 25 0.00  
12 85 74 62 59 58 57 84 62 40 29.98 29.93 29.86 10 10 10 20 7 23 0.00  
13 86 73 59 57 56 54 84 61 37 29.91 29.85 29.75 10 10 6 17 7 20 0.00  
14 75 66 57 56 55 54 87 70 53 29.83 29.79 29.74 10 10 10 16 8 20 0.00  
15 83 71 58 58 55 53 86 62 37 29.87 29.83 29.79 10 10 10 20 8 23 0.00  
16 86 74 61 59 56 51 90 61 32 29.90 29.85 29.78 10 10 10 18 7 22 0.00  
17 78 69 59 55 53 48 84 60 36 29.88 29.85 29.83 10 10 10 20 10 24 0.00  
18 87 71 54 52 47 40 83 52 20 29.91 29.86 29.80 10 10 10 17 4 21 0.00  
19 94 73 52 47 41 35 66 40 14 29.86 29.80 29.73 10 10 10 16 3 18 0.00  
20 78 67 56 58 54 46 83 67 50 29.87 29.82 29.76 10 10 10 23 10 28 0.00  
21 72 65 58 59 56 52 90 70 49 29.89 29.84 29.81 10 9 1 18 8 22 0.46 Rain
22 76 65 54 56 53 49 93 67 41 30.00 29.96 29.90 10 10 10 15 3 21 0.00  
23 85 70 54 59 54 51 86 59 32 30.02 29.97 29.91 10 10 10 16 3 20 0.00  
24 77 68 59 56 53 47 84 61 38 29.98 29.94 29.91 10 10 2 21 10 25 0.00  
25 72 63 53 49 46 41 72 54 35 29.93 29.88 29.82 10 10 10 18 9 23 0.00  
26 78 63 47 47 41 33 86 53 20 29.99 29.89 29.83 10 10 10 18 5 24 0.00  
27 80 65 49 44 37 29 74 45 16 30.09 30.04 29.99 10 10 10 16 3 21 0.00  
28 87 69 50 55 38 23 84 47 10 30.08 30.04 29.97 10 10 10 18 3 22 0.00  
29 80 68 56 59 55 53 93 68 42 30.10 30.07 30.03 10 10 10 17 6 21 0.00  
30 78 69 60 59 57 55 84 67 50 30.08 30.04 29.96 10 10 10 15 5 18 0.00