Weather History for Santa Rosa, CA

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 75 °F 61 °F 50 °F
Mean Temperature 62 °F 47 °F 40 °F
Min Temperature 49 °F 32 °F 25 °F
Degree Days  
Heating Degree Days (base 65) 25 18 3 566
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 14 1 0 38
Dew Point  
Dew Point 54 °F 33 °F -1 °F
Precipitation  
Precipitation 0.18 in 0.01 in 0.00 in 0.20 in
Snowdepth - - - -
Wind  
Wind 30 mph 3 mph 0 mph
Gust Wind 41 mph 26 mph 17 mph
Sea Level Pressure  
Sea Level Pressure 30.55 in 30.17 in 29.72 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 10, 2011 Rise Set
Actual Time 7:17 AM PST 4:50 PM PST
Civil Twilight 6:48 AM PST 5:19 PM PST
Nautical Twilight 6:14 AM PST 5:53 PM PST
Astronomical Twilight 5:42 AM PST 6:25 PM PST
Moon 5:09 PM PST (12/10) 7:22 AM PST (12/10)
Length of Visible Light 10h 31m
Length of Day
9h 32m
Full, 100% of the Moon is Illuminated
Dec 10
Full
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full

Weather History Calendar

Precipitation Actual month total 0.20 Normal Month Total: 7.03
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
73 | 39 0.00
Average:
59 | 38 0.13
Clear
Actual:
75 | 49 0.00
Average:
58 | 38 0.14
Clear
Actual:
66 | 44 0.00
Average:
58 | 38 0.15
Clear
Actual:
63 | 30 0.00
Average:
58 | 37 0.16
Scattered Clouds
Actual:
67 | 33 0.00
Average:
58 | 37 0.17
Scattered Clouds
Actual:
60 | 28 0.00
Average:
57 | 37 0.17
Scattered Clouds
Actual:
60 | 29 0.00
Average:
57 | 37 0.18
Fog
Actual:
60 | 31 0.00
Average:
57 | 37 0.19
Fog
Actual:
61 | 28 0.00
Average:
57 | 37 0.19
Fog
Actual:
59 | 27 0.00
Average:
57 | 37 0.20
Fog
Actual:
50 | 37 0.00
Average:
56 | 37 0.20
Rain
Actual:
57 | 33 0.01
Average:
56 | 37 0.21
Fog
Actual:
58 | 28 0.00
Average:
56 | 36 0.22
Fog
Actual:
53 | 28 0.00
Average:
56 | 36 0.23
Rain
Actual:
57 | 34 0.18
Average:
56 | 36 0.24
Fog
Actual:
70 | 27 0.00
Average:
56 | 36 0.24
Fog
Actual:
61 | 29 0.00
Average:
56 | 36 0.25
Fog
Actual:
53 | 30 0.00
Average:
56 | 36 0.27
Fog
Actual:
70 | 36 0.00
Average:
56 | 36 0.27
Scattered Clouds
Actual:
62 | 26 0.00
Average:
56 | 36 0.27
Fog
Actual:
64 | 27 0.00
Average:
56 | 36 0.27
Scattered Clouds
Actual:
66 | 30 0.00
Average:
56 | 36 0.28
Scattered Clouds
Actual:
59 | 26 0.00
Average:
56 | 36 0.27
Clear
Actual:
59 | 25 0.00
Average:
56 | 36 0.26
Scattered Clouds
Actual:
58 | 26 0.00
Average:
56 | 36 0.27
Fog
Actual:
54 | 26 0.00
Average:
56 | 36 0.28
Fog
Actual:
59 | 32 0.00
Average:
56 | 36 0.27
Fog
Actual:
65 | 38 0.00
Average:
56 | 36 0.27
Fog
Actual:
57 | 47 0.00
Average:
56 | 36 0.26
Rain
Actual:
60 | 34 0.01
Average:
56 | 36 0.26
Scattered Clouds
Actual:
62 | 30 0.00
Average:
56 | 36 0.26
 

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

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 73 56 39 32 20 11 64 38 12 30.25 30.16 30.06 10 10 10 25 11 39 0.00  
2 75 62 49 38 27 9 54 34 13 30.07 29.99 29.93 10 10 8 29 10 41 0.00  
3 66 55 44 25 12 5 28 20 11 30.24 30.14 30.06 10 10 10 29 13 38 0.00  
4 63 47 30 46 35 27 92 62 32 30.26 30.18 30.12 10 8 1 7 2 8 0.00  
5 67 50 33 34 24 15 96 55 13 30.29 30.19 30.14 10 10 10 24 7 32 0.00  
6 60 44 28 33 30 26 92 61 30 30.40 30.33 30.30 10 10 10 6 1 8 0.00  
7 60 45 29 40 34 28 92 65 37 30.32 30.21 30.14 10 9 4 8 3 10 0.00  
8 60 46 31 39 34 30 100 72 43 30.18 30.14 30.08 10 4 0 6 1 7 0.00 Fog
9 61 45 28 40 33 27 100 71 42 30.22 30.17 30.12 10 5 0 6 0 6 0.00 Fog
10 59 43 27 39 32 26 100 72 44 30.17 30.12 30.02 10 4 0 8 2 9 0.00 Fog
11 50 44 37 41 40 38 100 83 66 30.00 29.90 29.82 10 7 0 9 3 10 0.00 Fog
12 57 45 33 41 39 32 92 72 51 29.87 29.78 29.72 10 10 7 9 3 10 0.01 Rain
13 58 43 28 44 33 27 100 79 57 30.14 29.99 29.88 10 4 0 13 2 16 0.00 Fog
14 53 41 28 42 34 28 100 82 64 30.31 30.22 30.14 10 4 0 8 2 9 0.00 Fog
15 57 46 34 46 41 33 100 79 57 30.27 30.20 30.16 10 7 1 13 4 16 0.18 Fog , Rain
16 70 49 27 40 31 27 100 61 21 30.25 30.19 30.10 10 5 0 15 2 18 0.00 Fog
17 61 45 29 41 36 29 100 74 47 30.18 30.12 30.06 10 5 0 6 1 7 0.00 Fog
18 53 42 30 44 36 29 100 83 66 30.22 30.14 30.09 10 3 0 8 2 9 0.00 Fog
19 70 53 36 42 36 23 100 59 17 30.12 30.07 29.98 10 7 0 20 4 26 0.00 Fog
20 62 44 26 41 34 26 92 67 42 30.10 30.04 30.01 10 10 5 8 1 9 0.00  
21 64 46 27 43 29 -1 100 55 9 30.16 30.07 30.02 10 6 0 21 3 29 0.00 Fog
22 66 48 30 24 13 0 72 41 10 30.47 30.30 30.17 10 10 10 30 7 38 0.00  
23 59 43 26 34 26 21 85 57 28 30.55 30.50 30.47 10 10 10 7 1 7 0.00  
24 59 42 25 34 29 23 100 67 33 30.48 30.42 30.36 10 10 9 7 1 9 0.00  
25 58 42 26 36 31 24 100 70 40 30.44 30.35 30.29 10 8 2 5 1 6 0.00  
26 54 40 26 45 33 25 100 83 66 30.36 30.30 30.27 10 4 0 8 2 10 0.00 Fog
27 59 46 32 43 36 30 100 77 53 30.37 30.33 30.27 10 4 0 9 2 12 0.00 Fog
28 65 52 38 53 46 37 100 74 48 30.36 30.30 30.25 10 6 0 7 1 9 0.00 Fog
29 57 52 47 54 50 47 100 93 86 30.26 30.17 30.11 10 2 0 7 1 8 0.00 Fog
30 60 47 34 54 46 34 100 84 67 30.22 30.16 30.11 10 4 0 10 3 13 0.01 Fog , Rain
31 62 46 30 41 35 30 100 71 42 30.23 30.19 30.13 10 7 1 10 2 12 0.00