Weather History for Hayward, CA

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 73 °F 59 °F 52 °F
Mean Temperature 61 °F 49 °F 44 °F
Min Temperature 54 °F 39 °F 33 °F
Degree Days  
Heating Degree Days (base 65) 21 16 4 495
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 10 1 0 33
Dew Point  
Dew Point 54 °F 34 °F 6 °F
Precipitation  
Precipitation 0.08 in 0.00 in 0.00 in 0.13 in
Snowdepth - - - -
Wind  
Wind 28 mph 4 mph 0 mph
Gust Wind 40 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.60 in 30.22 in 29.78 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 14, 2011 Rise Set
Actual Time 7:15 AM PST 4:50 PM PST
Civil Twilight 6:46 AM PST 5:20 PM PST
Nautical Twilight 6:13 AM PST 5:52 PM PST
Astronomical Twilight 5:41 AM PST 6:24 PM PST
Moon 9:13 PM PST (12/14) 10:06 AM PST (12/14)
Length of Visible Light 10h 33m
Length of Day
9h 35m
Waning Gibbous, 82% of the Moon is Illuminated
Dec 14
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Dec 31
First Quarter
Jan 8
Full

Weather History Calendar

Precipitation Actual month total 0.13 Average Month Total: 2.45
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
 
Clear
Actual:
68 | 54 0.00
Average:
57 | 44 0.06
Clear
Actual:
73 | 47 0.00
Average:
57 | 44 0.06
Clear
Actual:
64 | 46 0.00
Average:
57 | 44 0.07
Clear
Actual:
60 | 38 0.00
Average:
57 | 44 0.07
Clear
Actual:
62 | 38 0.00
Average:
57 | 44 0.07
Clear
Actual:
56 | 37 0.00
Average:
57 | 44 0.07
Clear
Actual:
56 | 38 0.00
Average:
57 | 44 0.07
Clear
Actual:
55 | 37 0.00
Average:
57 | 44 0.08
Clear
Actual:
57 | 35 0.00
Average:
57 | 43 0.08
Scattered Clouds
Actual:
58 | 37 0.00
Average:
57 | 43 0.08
Rain
Actual:
53 | 43 T
Average:
57 | 43 0.08
Rain
Actual:
54 | 40 0.02
Average:
57 | 43 0.08
Clear
Actual:
57 | 36 0.00
Average:
56 | 43 0.08
Scattered Clouds
Actual:
53 | 39 0.00
Average:
56 | 42 0.08
Rain
Actual:
55 | 41 0.08
Average:
56 | 42 0.08
Clear
Actual:
59 | 35 0.00
Average:
56 | 42 0.08
Clear
Actual:
58 | 38 0.00
Average:
56 | 42 0.08
Partly Cloudy
Actual:
54 | 36 0.00
Average:
55 | 41 0.08
Scattered Clouds
Actual:
58 | 41 0.00
Average:
55 | 41 0.08
Clear
Actual:
63 | 35 0.00
Average:
55 | 41 0.08
Clear
Actual:
63 | 37 0.00
Average:
55 | 41 0.08
Clear
Actual:
62 | 36 0.00
Average:
55 | 41 0.09
Clear
Actual:
56 | 33 0.00
Average:
55 | 41 0.09
Clear
Actual:
60 | 33 0.00
Average:
55 | 41 0.09
Clear
Actual:
54 | 34 0.00
Average:
55 | 41 0.09
Partly Cloudy
Actual:
52 | 35 0.00
Average:
55 | 41 0.09
Scattered Clouds
Actual:
57 | 39 0.00
Average:
55 | 41 0.09
Clear
Actual:
61 | 40 0.00
Average:
55 | 41 0.08
Fog
Actual:
57 | 45 0.00
Average:
55 | 41 0.08
Rain
Actual:
59 | 50 0.03
Average:
55 | 41 0.08
Fog
Actual:
62 | 41 0.00
Average:
55 | 41 0.08
 

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 68 61 54 25 19 12 30 21 11 30.27 30.17 30.05 10 10 10 28 15 40 0.00  
2 73 60 47 39 24 11 46 30 13 30.08 30.02 29.97 10 10 10 25 7 35 0.00  
3 64 55 46 26 12 7 42 27 11 30.30 30.18 30.06 10 10 10 23 9 32 0.00  
4 60 49 38 44 30 22 86 56 26 30.32 30.25 30.17 10 10 9 10 3 12 0.00  
5 62 50 38 36 25 19 76 48 20 30.35 30.26 30.19 10 10 9 15 5 21 0.00  
6 56 47 37 38 31 27 70 56 41 30.45 30.38 30.35 10 9 7 9 3 12 0.00  
7 56 47 38 40 34 29 76 62 47 30.38 30.27 30.19 10 8 6 9 3 10 0.00  
8 55 46 37 40 35 31 85 70 54 30.20 30.18 30.13 10 7 6 7 3 9 0.00  
9 57 46 35 41 34 31 82 63 44 30.25 30.20 30.17 10 7 4 9 2 10 0.00  
10 58 48 37 45 36 30 93 72 51 30.19 30.13 30.05 8 6 4 9 1 17 0.00  
11 53 48 43 43 41 40 92 76 59 30.05 29.94 29.85 10 8 3 9 4 13 T Rain
12 54 47 40 43 40 36 86 73 59 29.92 29.82 29.78 10 9 7 18 6 24 0.02 Rain
13 57 47 36 44 39 34 92 74 55 30.18 30.06 29.93 10 7 5 10 3 15 0.00  
14 53 46 39 43 40 37 93 80 66 30.33 30.27 30.19 10 9 6 8 2 31 0.00  
15 55 48 41 46 42 37 93 76 59 30.29 30.24 30.19 10 8 2 16 6 21 0.08 Rain
16 59 47 35 43 37 33 100 70 40 30.30 30.22 30.17 10 10 8 9 3 12 0.00  
17 58 48 38 40 37 33 85 66 47 30.23 30.17 30.12 10 9 8 7 2 8 0.00  
18 54 45 36 44 40 34 86 76 66 30.25 30.18 30.13 10 10 7 9 3 13 0.00  
19 58 50 41 43 40 34 89 70 51 30.14 30.11 30.06 10 10 7 13 3 14 0.00  
20 63 49 35 37 31 26 82 55 27 30.14 30.10 30.06 10 10 10 12 3 14 0.00  
21 63 50 37 39 32 29 70 49 27 30.19 30.12 30.07 10 9 8 9 3 10 0.00  
22 62 49 36 33 16 6 76 44 12 30.51 30.35 30.21 10 10 10 15 5 20 0.00  
23 56 45 33 29 21 16 52 40 27 30.60 30.55 30.51 10 10 10 8 4 9 0.00  
24 60 47 33 35 26 19 61 45 28 30.52 30.46 30.40 10 9 6 12 3 14 0.00  
25 54 44 34 38 31 24 79 65 50 30.48 30.41 30.35 10 6 4 9 3 12 0.00  
26 52 44 35 44 38 30 93 82 71 30.40 30.35 30.31 8 5 2 8 2 12 0.00  
27 57 48 39 42 39 35 89 70 51 30.40 30.37 30.32 10 7 3 13 4 16 0.00  
28 61 51 40 48 41 35 93 74 55 30.41 30.36 30.32 10 9 5 8 2 10 0.00  
29 57 51 45 54 48 42 100 92 83 30.31 30.22 30.14 10 6 0 25 2 - 0.00 Fog
30 59 55 50 54 51 48 100 90 80 30.26 30.21 30.15 10 6 1 13 3 15 0.03 Rain
31 62 52 41 48 41 31 100 65 30 30.27 30.22 30.16 10 6 0 13 4 15 0.00 Fog