Napa County, CA

7:47 AM PDT on August 21, 2017 (GMT -0700)
Napa County

Weather History for KAPC - September, 2015

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Month of September, 2015

  Max Avg Min Sum
Temperature  
Max Temperature 99 °F 81 °F 67 °F
Mean Temperature 76 °F 66 °F 58 °F
Min Temperature 60 °F 50 °F 42 °F
Degree Days  
Heating Degree Days (base 65) 7 2 0 45
Cooling Degree Days (base 65) 11 3 0 83
Growing Degree Days (base 50) 26 16 8 479
Dew Point  
Dew Point 61 °F 51 °F 23 °F
Precipitation  
Precipitation 0.06 in 0.00 in 0.00 in 0.06 in
Snowdepth - - - -
Wind  
Wind 29 mph 8 mph 0 mph
Gust Wind 34 mph 26 mph 22 mph
Sea Level Pressure  
Sea Level Pressure 30.10 in 29.86 in 29.65 in

Monthly Weather History Graph

Monthly Weather History Graph

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Astronomy

Sep. 16, 2015 Rise Set
Actual Time 6:51 AM PDT 7:15 PM PDT
Civil Twilight 6:25 AM PDT 7:42 PM PDT
Nautical Twilight 5:53 AM PDT 8:13 PM PDT
Astronomical Twilight 5:22 AM PDT 8:44 PM PDT
Moon 9:55 AM PDT (9/16) 9:11 PM PDT (9/16)
Length of Visible Light 13h 17m
Length of Day
12h 24m
Waxing Crescent, 11% of the Moon is Illuminated
Sep 16
Waxing Crescent
Sep 21
First Quarter
Sep 27
Full
Oct 4
Last Quarter
Oct 12
New

Daily Weather History & Observations

2015 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 74 66 57 60 58 55 97 77 57 29.90 29.84 29.81 10 10 9 21 10 26 0.00  
2 79 67 54 57 56 54 93 69 45 29.94 29.88 29.83 10 10 9 23 11 29 0.00  
3 76 66 55 54 52 50 93 67 41 29.88 29.83 29.77 10 10 10 22 11 26 0.00  
4 77 61 44 50 47 44 100 67 33 29.85 29.81 29.79 10 9 1 22 9 26 0.00  
5 82 63 44 48 43 37 93 59 25 29.97 29.92 29.85 10 10 10 16 5 21 0.00  
6 88 65 42 54 42 33 76 46 15 29.97 29.91 29.86 10 10 10 16 5 20 0.00  
7 92 70 47 53 41 23 80 44 8 29.93 29.87 29.82 10 10 10 15 6 19 0.00  
8 96 73 49 46 40 28 68 39 9 29.88 29.83 29.76 10 10 8 12 5 14 0.00  
9 99 76 52 55 42 34 68 40 12 29.86 29.81 29.75 10 10 9 12 5 14 0.00  
10 93 73 53 60 54 42 90 54 18 29.87 29.83 29.78 10 10 9 18 6 23 0.00  
11 87 70 52 61 54 43 97 61 24 29.91 29.86 29.78 10 10 10 21 7 25 0.00  
12 81 68 54 60 55 52 93 71 49 29.93 29.88 29.77 10 10 10 24 10 29 0.00  
13 86 73 60 60 59 57 93 67 40 29.88 29.78 29.68 10 10 10 22 9 27 T Rain
14 67 62 57 60 57 56 93 83 73 29.78 29.74 29.69 10 10 10 25 13 29 0.00  
15 71 62 53 56 51 43 89 64 38 29.88 29.83 29.77 10 10 10 29 13 34 0.00  
16 68 59 50 59 56 51 100 82 63 30.02 29.98 29.89 10 9 4 24 10 28 0.06 Rain
17 75 64 52 59 56 53 100 77 53 30.10 30.02 29.95 10 7 0 15 5 18 0.00 Fog
18 81 64 46 57 52 47 100 70 39 29.98 29.92 29.82 10 8 0 17 5 20 0.00 Fog
19 90 69 47 55 50 45 100 62 24 29.87 29.81 29.74 10 10 6 9 4 12 0.00  
20 95 73 50 55 48 42 89 54 18 29.87 29.80 29.75 10 10 10 13 4 17 0.00  
21 96 74 52 59 50 31 84 47 10 29.78 29.73 29.65 10 10 10 16 6 19 0.00  
22 69 60 50 59 54 51 100 80 59 29.92 29.85 29.74 10 10 8 24 14 29 0.00  
23 80 62 43 57 50 43 100 68 35 30.02 29.96 29.86 10 6 0 15 6 17 0.00 Fog
24 90 71 52 57 50 41 93 57 21 29.96 29.89 29.81 10 10 10 10 5 12 0.00  
25 88 68 48 56 51 45 100 61 22 29.90 29.86 29.83 10 10 10 21 6 24 0.00  
26 79 66 52 59 54 48 93 70 47 29.92 29.85 29.78 10 10 10 17 8 20 0.00  
27 75 63 50 58 55 51 100 75 50 29.83 29.79 29.75 10 10 9 14 5 17 0.00  
28 72 58 44 56 52 47 100 79 57 29.92 29.85 29.81 10 6 0 21 7 24 0.00 Fog
29 70 61 51 54 51 49 96 76 55 29.99 29.93 29.90 10 10 10 18 10 21 0.00  
30 68 61 53 55 52 50 93 76 58 30.00 29.94 29.89 10 10 10 14 5 16 T