Napa County, CA

8:12 PM PDT on April 23, 2018 (GMT -0700)
Napa County

Weather History for KAPC - September, 2011

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Month of September, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 97 °F 81 °F 70 °F
Mean Temperature 75 °F 66 °F 62 °F
Min Temperature 58 °F 51 °F 44 °F
Degree Days  
Heating Degree Days (base 65) 3 1 0 24
Cooling Degree Days (base 65) 10 2 0 65
Growing Degree Days (base 50) 25 16 10 475
Dew Point  
Dew Point 61 °F 54 °F 43 °F
Precipitation  
Precipitation 0.01 in 0.00 in 0.00 in 0.02 in
Snowdepth - - - -
Wind  
Wind 45 mph 6 mph 0 mph
Gust Wind 117 mph 26 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.07 in 29.91 in 29.68 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Sep. 09, 2011 Rise Set
Actual Time 6:45 AM PDT 7:26 PM PDT
Civil Twilight 6:18 AM PDT 7:53 PM PDT
Nautical Twilight 5:47 AM PDT 8:24 PM PDT
Astronomical Twilight 5:14 AM PDT 8:57 PM PDT
Moon 5:54 PM PDT (9/9) 4:12 AM PDT (9/9)
Length of Visible Light 13h 34m
Length of Day
12h 41m
Waxing Gibbous, 94% of the Moon is Illuminated
Sep 9
Waxing Gibbous
Sep 12
Full
Sep 20
Last Quarter
Sep 27
New
Oct 3
First Quarter

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 82 64 46 57 52 45 100 71 42 29.87 29.81 29.75 10 6 0 13 5 22 0.00 Fog
2 86 67 48 58 54 48 100 69 37 29.87 29.83 29.79 10 10 8 14 6 22 0.00  
3 75 62 48 57 53 46 100 79 57 29.91 29.86 29.82 10 7 0 16 8 20 0.00 Fog
4 75 64 53 58 54 51 93 74 55 29.93 29.87 29.82 10 10 9 17 8 22 0.00  
5 77 63 48 56 52 47 93 72 50 29.96 29.90 29.85 10 10 9 16 7 17 0.00  
6 86 67 48 58 51 46 100 66 32 30.01 29.94 29.87 10 5 0 36 4 85 0.00 Fog
7 91 69 46 59 52 44 93 60 26 30.00 29.95 29.91 10 10 10 7 3 11 0.00  
8 77 62 47 56 51 45 96 71 46 30.07 29.99 29.92 10 10 9 16 6 66 0.00  
9 78 65 52 57 54 50 100 75 50 29.95 29.84 29.69 10 9 2 12 5 26 0.00  
10 76 64 52 58 56 51 93 75 57 29.83 29.74 29.68 10 10 10 24 9 31 0.00  
11 75 67 58 58 56 54 93 75 57 30.00 29.94 29.83 10 10 10 16 9 21 0.00  
12 80 67 54 59 56 54 93 71 48 30.06 30.02 29.98 10 10 10 21 7 68 0.00  
13 78 65 52 60 56 50 93 73 52 30.05 29.99 29.91 10 9 7 13 5 0 0.00  
14 70 64 57 56 55 54 93 78 63 29.96 29.90 29.82 10 10 10 36 11 101 0.00  
15 70 63 56 55 53 52 86 72 57 29.90 29.84 29.78 10 10 9 32 11 - 0.00  
16 72 62 51 55 53 49 93 73 53 29.93 29.87 29.83 10 10 9 45 8 117 0.00  
17 81 67 52 57 53 49 93 66 39 30.05 29.98 29.94 10 10 9 28 5 0 0.00  
18 90 69 47 56 51 46 93 60 27 30.06 30.01 29.93 10 9 2 10 4 0 0.00  
19 94 72 49 57 52 47 96 60 24 29.99 29.93 29.85 10 10 10 15 4 0 0.00  
20 97 75 52 61 54 49 90 56 22 29.92 29.87 29.81 10 10 10 13 4 15 0.00  
21 91 70 49 59 54 49 93 60 26 29.88 29.85 29.81 10 10 10 18 5 104 0.00  
22 90 71 52 61 56 50 93 68 43 29.98 29.91 29.86 10 10 8 12 4 17 0.00  
23 90 71 51 59 55 49 93 62 30 29.97 29.91 29.83 10 10 9 12 4 15 0.01  
24 76 65 54 57 55 53 93 73 53 29.95 29.90 29.85 10 10 10 30 12 35 0.00  
25 73 62 50 61 56 50 96 81 66 30.03 29.98 29.93 10 10 5 15 8 29 0.01  
26 80 62 44 55 48 43 100 69 38 30.05 30.01 29.94 10 6 0 17 5 23 0.00 Fog
27 88 68 47 58 50 45 93 61 29 30.04 29.95 29.90 10 10 10 10 3 20 0.00  
28 95 74 53 59 53 50 93 58 23 29.96 29.91 29.85 10 10 10 25 2 - 0.00  
29 76 64 52 60 57 50 90 72 54 29.93 29.88 29.83 10 10 7 24 9 26 0.00  
30 74 66 57 57 55 53 86 68 49 29.95 29.91 29.86 10 10 10 22 10 25 0.00