Weather History for Santa Rosa, CA

Change the Weather History Date:

Month of January, 2012

  Max Avg Min Sum
Temperature  
Max Temperature 70 °F 62 °F 50 °F
Mean Temperature 57 °F 48 °F 37 °F
Min Temperature 49 °F 34 °F 21 °F
Degree Days  
Heating Degree Days (base 65) 28 17 8 529
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 6 1 0 22
Dew Point  
Dew Point 55 °F 38 °F 13 °F
Precipitation  
Precipitation 2.77 in 0.23 in 0.00 in 6.99 in
Snowdepth - - - -
Wind  
Wind 23 mph 3 mph 0 mph
Gust Wind 32 mph 22 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.43 in 30.16 in 29.59 in

Monthly Weather History Graph

Monthly Weather History Graph

Search for Another Location

Airport:

Trip Planner

Search our weather history database for the weather conditions in past years. The results will help you decide how hot, cold, wet, or windy it might be!

Date:

Astronomy

Jan. 09, 2012 Rise Set
Actual Time 7:28 AM PST 5:07 PM PST
Civil Twilight 6:59 AM PST 5:37 PM PST
Nautical Twilight 6:26 AM PST 6:10 PM PST
Astronomical Twilight 5:54 AM PST 6:42 PM PST
Moon 5:59 PM PST (1/9) 7:33 AM PST (1/9)
Length of Visible Light 10h 37m
Length of Day
9h 39m
Full, 100% of the Moon is Illuminated
Jan 9
Full
Jan 16
Last Quarter
Jan 22
New
Jan 30
First Quarter
Feb 7
Full

Weather History Calendar

Precipitation Actual month total 6.99 Normal Month Total: 7.05
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Fog
Actual:
65 | 29 0.00
Average:
56 | 36 0.33
Fog
Actual:
59 | 32 0.00
Average:
56 | 36 0.32
Fog
Actual:
64 | 40 0.00
Average:
56 | 36 0.30
Scattered Clouds
Actual:
68 | 33 0.00
Average:
56 | 36 0.29
Fog
Actual:
70 | 35 0.00
Average:
56 | 36 0.29
Fog
Actual:
60 | 28 0.00
Average:
56 | 36 0.29
Fog
Actual:
70 | 30 0.00
Average:
56 | 36 0.29
Scattered Clouds
Actual:
66 | 32 0.00
Average:
56 | 36 0.29
Fog
Actual:
65 | 27 0.00
Average:
56 | 36 0.29
Fog
Actual:
64 | 29 0.00
Average:
56 | 36 0.27
Clear
Actual:
68 | 28 0.00
Average:
56 | 36 0.27
Fog
Actual:
66 | 25 0.00
Average:
56 | 36 0.27
Clear
Actual:
66 | 27 0.00
Average:
56 | 36 0.25
Scattered Clouds
Actual:
66 | 27 0.00
Average:
56 | 36 0.23
Fog
Actual:
57 | 30 0.00
Average:
57 | 37 0.22
Clear
Actual:
54 | 26 0.00
Average:
57 | 37 0.20
Scattered Clouds
Actual:
53 | 21 0.00
Average:
57 | 37 0.20
Fog
Actual:
55 | 28 0.00
Average:
57 | 37 0.19
Rain
Actual:
50 | 41 0.86
Average:
57 | 37 0.18
Rain
Actual:
57 | 49 2.77
Average:
57 | 37 0.18
Rain
Actual:
56 | 38 0.24
Average:
57 | 37 0.17
Rain
Actual:
52 | 39 1.84
Average:
57 | 37 0.18
Rain
Actual:
59 | 40 1.26
Average:
57 | 37 0.17
Fog
Actual:
60 | 38 0.00
Average:
57 | 37 0.17
Fog
Actual:
65 | 48 0.00
Average:
58 | 37 0.17
Fog
Actual:
67 | 45 0.02
Average:
58 | 37 0.17
Fog
Actual:
70 | 37 0.00
Average:
58 | 37 0.17
Fog
Actual:
64 | 30 0.00
Average:
58 | 37 0.17
Fog
Actual:
65 | 31 0.00
Average:
58 | 37 0.17
Fog
Actual:
61 | 39 0.00
Average:
58 | 37 0.18
Fog
Actual:
56 | 37 0.00
Average:
58 | 37 0.18
 

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

2012 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 65 47 29 43 33 28 96 70 44 30.18 30.15 30.09 10 4 0 7 2 10 0.00 Fog
2 59 46 32 50 41 30 100 86 72 30.31 30.24 30.15 10 4 0 9 1 10 0.00 Fog
3 64 52 40 46 44 41 100 74 48 30.38 30.31 30.25 10 4 0 7 1 8 0.00 Fog
4 68 51 33 46 40 33 100 70 39 30.39 30.31 30.26 10 10 2 9 1 10 0.00  
5 70 53 35 47 36 32 100 63 26 30.31 30.26 30.13 10 5 0 12 1 14 0.00 Fog
6 60 44 28 43 33 27 100 76 51 30.17 30.15 30.09 10 4 0 8 1 9 0.00 Fog
7 70 50 30 42 31 13 100 56 11 30.25 30.17 30.14 10 5 0 20 8 28 0.00 Fog
8 66 49 32 36 30 21 92 60 28 30.23 30.18 30.14 10 10 10 16 2 21 0.00  
9 65 46 27 38 33 27 100 67 34 30.26 30.20 30.14 10 9 2 6 1 8 0.00 Fog
10 64 47 29 40 34 27 100 70 39 30.18 30.13 30.07 10 8 2 6 1 7 0.00 Fog
11 68 48 28 41 34 26 100 65 29 30.13 30.07 30.00 10 9 2 8 2 9 0.00  
12 66 46 25 37 31 25 100 64 28 30.13 30.08 30.02 10 7 0 6 1 6 0.00 Fog
13 66 47 27 36 32 26 92 61 29 30.22 30.16 30.13 10 10 10 6 1 8 0.00  
14 66 47 27 35 32 26 96 62 28 30.19 30.13 30.06 10 9 4 8 1 9 0.00  
15 57 44 30 39 31 24 100 69 38 30.17 30.05 29.96 10 6 0 23 8 28 0.00 Fog
16 54 40 26 26 21 15 75 50 24 30.32 30.24 30.17 10 10 10 16 6 21 0.00  
17 53 37 21 34 28 20 96 70 44 30.41 30.35 30.32 10 10 9 10 1 12 0.00  
18 55 42 28 43 37 28 100 80 59 30.42 30.32 30.25 10 7 0 8 2 10 0.00 Fog
19 50 46 41 48 45 40 100 95 89 30.22 30.10 30.01 9 3 1 14 3 17 0.86 Rain
20 57 53 49 55 51 46 100 93 86 30.03 29.88 29.65 10 2 1 17 6 26 2.77 Rain
21 56 47 38 52 42 35 92 71 50 30.13 29.91 29.65 10 9 6 23 6 30 0.24 Rain
22 52 46 39 50 44 37 100 93 86 30.18 29.98 29.74 10 6 1 22 7 32 1.84 Rain
23 59 50 40 54 46 37 96 77 57 30.16 29.83 29.59 10 6 1 22 4 26 1.26 Rain
24 60 49 38 48 42 37 100 82 64 30.41 30.26 30.16 10 6 0 8 1 9 0.00 Fog
25 65 57 48 54 50 45 96 82 67 30.43 30.36 30.30 10 8 0 8 2 10 0.00 Fog
26 67 56 45 55 52 44 100 82 63 30.34 30.28 30.20 10 3 0 9 2 12 0.02 Fog
27 70 54 37 45 40 29 100 61 22 30.28 30.23 30.17 10 8 0 12 4 13 0.00 Fog
28 64 47 30 38 33 28 100 66 32 30.33 30.27 30.22 10 7 0 9 2 12 0.00 Fog
29 65 48 31 45 36 30 100 70 39 30.27 30.21 30.10 10 8 0 8 1 9 0.00 Fog
30 61 50 39 48 44 37 100 78 55 30.10 30.04 29.98 10 8 0 9 3 10 0.00 Fog
31 56 47 37 47 43 36 100 86 71 30.18 30.11 30.06 10 7 0 10 3 13 0.00 Fog