Weather History for Napa County, CA

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Month of January, 2013

  Max Avg Min Sum
Temperature  
Max Temperature 65 °F 58 °F 49 °F
Mean Temperature 56 °F 45 °F 36 °F
Min Temperature 47 °F 32 °F 22 °F
Degree Days  
Heating Degree Days (base 65) 29 20 9 620
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 5 0 0 9
Dew Point  
Dew Point 54 °F 35 °F 11 °F
Precipitation  
Precipitation 0.17 in 0.01 in 0.00 in 0.34 in
Snowdepth - - - -
Wind  
Wind 26 mph 5 mph 0 mph
Gust Wind 86 mph 23 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.47 in 30.18 in 29.94 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 21, 2013 Rise Set
Actual Time 7:21 AM PST 5:19 PM PST
Civil Twilight 6:53 AM PST 5:48 PM PST
Nautical Twilight 6:20 AM PST 6:20 PM PST
Astronomical Twilight 5:49 AM PST 6:52 PM PST
Moon 1:03 PM PST (1/21) 2:54 AM PST (1/21)
Length of Visible Light 10h 55m
Length of Day
9h 58m
Waxing Gibbous, 76% of the Moon is Illuminated
Jan 21
Waxing Gibbous
Jan 26
Full
Feb 3
Last Quarter
Feb 9
New
Feb 17
First Quarter

Weather History Calendar

Precipitation Actual month total 0.34 Average Month Total: 5.60
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Snow
Actual:
57 | 31 T
Average:
55 | 36 0.12
Snow
Actual:
55 | 28 0.00
Average:
55 | 36 0.13
Snow
Actual:
55 | 27 0.00
Average:
55 | 36 0.07
Clear
Actual:
57 | 30 0.00
Average:
53 | 37 0.40
Rain
Actual:
49 | 32 0.15
Average:
55 | 36 0.26
Rain
Actual:
52 | 34 0.02
Average:
55 | 37 0.06
Fog
Actual:
57 | 32 0.00
Average:
54 | 37 0.09
Fog
Actual:
57 | 36 0.00
Average:
55 | 38 0.17
Rain
Actual:
53 | 36 T
Average:
56 | 38 0.15
Clear
Actual:
53 | 32 0.00
Average:
57 | 38 0.09
Scattered Clouds
Actual:
52 | 26 0.00
Average:
55 | 38 0.37
Scattered Clouds
Actual:
50 | 28 0.00
Average:
56 | 40 0.21
Clear
Actual:
50 | 22 0.00
Average:
57 | 39 0.24
Clear
Actual:
54 | 26 0.00
Average:
57 | 39 0.32
Clear
Actual:
51 | 27 0.00
Average:
57 | 40 0.18
Clear
Actual:
58 | 26 0.00
Average:
58 | 41 0.31
Clear
Actual:
60 | 29 0.00
Average:
59 | 40 0.13
Clear
Actual:
64 | 28 0.00
Average:
58 | 39 0.16
Clear
Actual:
65 | 29 0.00
Average:
58 | 40 0.12
Clear
Actual:
65 | 30 0.00
Average:
57 | 39 0.21
Clear
Actual:
62 | 31 0.00
Average:
58 | 39 0.26
Clear
Actual:
62 | 32 0.00
Average:
59 | 39 0.16
Rain
Actual:
55 | 46 0.17
Average:
58 | 38 0.13
Overcast
Actual:
59 | 47 T
Average:
59 | 38 0.23
Fog
Actual:
65 | 47 0.00
Average:
59 | 37 0.12
Fog
Actual:
59 | 39 0.00
Average:
59 | 38 0.13
Clear
Actual:
57 | 30 0.00
Average:
59 | 38 0.15
Clear
Actual:
61 | 33 0.00
Average:
58 | 38 0.10
Clear
Actual:
61 | 32 0.00
Average:
58 | 38 0.24
Clear
Actual:
64 | 34 0.00
Average:
59 | 38 0.23
Clear
Actual:
65 | 33 0.00
Average:
58 | 38 0.06
 

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
Jan high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 57 44 31 37 32 27 85 58 30 30.27 30.23 30.19 10 10 9 16 6 21 T Snow
2 55 42 28 34 30 24 92 68 43 30.23 30.18 30.12 10 10 10 15 6 20 0.00 Snow
3 55 41 27 38 32 25 92 71 50 30.26 30.21 30.16 10 10 9 16 4 20 0.00 Snow
4 57 44 30 38 34 30 89 68 47 30.28 30.22 30.17 10 10 10 13 5 15 0.00  
5 49 41 32 43 39 31 96 81 65 30.26 30.16 30.06 10 6 2 18 8 23 0.15 Rain
6 52 43 34 45 40 32 100 86 71 30.20 30.14 30.06 10 6 0 10 3 25 0.02 Fog , Rain
7 57 45 32 46 36 30 100 83 66 30.23 30.18 30.15 10 4 0 10 2 17 0.00 Fog
8 57 47 36 45 40 34 100 83 66 30.26 30.19 30.12 7 3 0 14 5 17 0.00 Fog
9 53 45 36 48 41 33 100 83 65 30.16 30.07 29.94 10 4 0 26 6 32 T Fog , Rain
10 53 43 32 35 32 28 85 65 45 30.17 30.09 30.06 10 10 10 13 6 - 0.00  
11 52 39 26 39 32 25 96 73 50 30.24 30.16 30.11 10 10 10 13 3 15 0.00  
12 50 39 28 32 26 23 89 63 36 30.24 30.18 30.13 10 10 10 12 5 14 0.00  
13 50 36 22 29 22 12 92 60 27 30.26 30.20 30.17 10 10 10 22 6 28 0.00  
14 54 40 26 32 21 11 78 51 24 30.38 30.33 30.22 10 10 10 21 4 25 0.00  
15 51 39 27 31 28 23 85 64 42 30.47 30.42 30.38 10 10 9 16 5 21 0.00  
16 58 42 26 36 31 26 92 68 43 30.43 30.34 30.26 10 10 8 17 7 21 0.00  
17 60 45 29 38 33 28 96 69 42 30.26 30.20 30.14 10 9 5 20 7 86 0.00  
18 64 46 28 39 32 27 92 64 36 30.22 30.16 30.12 10 10 7 15 5 18 0.00  
19 65 47 29 36 31 26 92 62 32 30.24 30.18 30.14 10 10 10 15 6 18 0.00  
20 65 48 30 36 31 26 89 59 28 30.22 30.17 30.11 10 10 10 15 5 20 0.00  
21 62 47 31 40 34 27 85 62 39 30.18 30.12 30.07 10 10 10 18 7 24 0.00  
22 62 47 32 40 35 28 89 64 39 30.11 30.05 29.98 10 10 10 18 8 24 0.00  
23 55 51 46 48 44 36 93 74 54 30.08 30.03 29.95 10 6 2 17 5 22 0.17 Rain
24 59 53 47 52 48 46 93 87 80 30.17 30.11 30.06 10 4 1 12 3 15 T  
25 65 56 47 54 49 46 100 84 67 30.20 30.14 30.02 10 4 0 13 4 36 0.00 Fog
26 59 49 39 50 44 35 96 74 51 30.04 30.01 29.94 10 5 0 21 8 25 0.00 Fog
27 57 44 30 40 35 30 92 68 43 30.16 30.11 30.04 10 10 10 12 4 30 0.00  
28 61 47 33 40 36 31 92 67 42 30.26 30.20 30.15 10 10 10 16 4 31 0.00  
29 61 47 32 45 38 31 100 76 51 30.34 30.28 30.24 10 10 10 10 3 25 0.00  
30 64 49 34 45 39 33 92 69 46 30.32 30.28 30.24 10 10 10 9 3 23 0.00  
31 65 49 33 48 39 32 100 76 52 30.28 30.24 30.17 10 6 0 13 4 16 0.00