San Francisco, CA

6:25 AM PDT on March 25, 2017 (GMT -0700)
San Francisco International

Weather History for KSFO - December, 1997

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Month of December, 1997

  Max Avg Min Sum
Temperature  
Max Temperature 61 °F 56 °F 52 °F
Mean Temperature 58 °F 51 °F 45 °F
Min Temperature 55 °F 45 °F 37 °F
Degree Days  
Heating Degree Days (base 65) 20 14 7 439
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 2 0 51
Dew Point  
Dew Point 57 °F 43 °F 22 °F
Precipitation  
Precipitation 1.89 in 0.13 in 0.00 in 3.88 in
Snowdepth - - - -
Wind  
Wind 37 mph 7 mph 0 mph
Gust Wind 44 mph 26 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.57 in 30.12 in 29.58 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 31, 1997 Rise Set
Actual Time 7:24 AM PST 5:01 PM PST
Civil Twilight 6:55 AM PST 5:30 PM PST
Nautical Twilight 6:22 AM PST 6:03 PM PST
Astronomical Twilight 5:50 AM PST 6:34 PM PST
Moon 8:49 AM PST (12/31) 7:34 PM PST (12/31)
Length of Visible Light 10h 35m
Length of Day
9h 36m
Waxing Crescent, 6% of the Moon is Illuminated
Dec 31
Waxing Crescent
Jan 5
First Quarter
Jan 12
Full
Jan 20
Last Quarter
Jan 27
New

Daily Weather History & Observations

1997 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 61 53 45 49 47 39 100 83 44 29.94 29.88 29.85 10 10 10 10 3 - 0.01  
2 55 50 44 50 47 43 100 87 80 29.97 29.92 29.86 10 9 8 8 3 - 0.00  
3 59 56 53 55 52 50 97 88 75 30.01 29.97 29.95 10 10 7 15 7 - 0.18 Rain
4 59 56 54 54 52 50 90 85 78 29.94 29.82 29.71 10 10 7 18 10 - 0.04 Rain
5 61 58 55 54 53 51 96 85 72 29.74 29.67 29.61 10 10 6 21 10 26 0.31 Rain
6 57 56 54 55 53 51 100 90 84 29.66 29.61 29.58 10 9 4 18 12 - 0.06 Rain
7 60 54 48 57 52 43 100 89 67 29.88 29.69 29.61 10 7 2 25 11 37 1.89 Rain
8 54 50 46 46 44 41 93 78 69 30.26 30.05 29.88 10 10 6 18 10 25 0.27 Rain , Hail
9 55 48 41 43 41 37 93 75 55 30.49 30.42 30.28 10 10 10 14 6 - 0.00  
10 57 50 42 45 39 37 89 67 53 30.55 30.51 30.48 10 10 10 12 5 - 0.00  
11 60 54 48 47 39 36 80 61 42 30.51 30.48 30.43 10 10 10 15 8 - 0.00  
12 52 47 42 45 42 40 97 84 71 30.52 30.46 30.34 10 9 7 10 5 - 0.00  
13 55 50 44 53 42 38 100 79 68 30.31 30.20 30.10 10 10 8 18 5 26 0.08 Rain
14 59 54 46 55 51 46 100 93 77 30.26 30.13 30.08 10 9 3 15 10 16 0.84 Rain
15 53 48 42 49 45 42 100 87 66 30.31 30.28 30.26 10 10 6 9 3 - 0.01  
16 53 50 46 50 47 44 97 90 83 30.32 30.27 30.21 10 9 7 6 3 - 0.00  
17 54 52 50 52 49 46 100 91 82 30.21 30.10 29.98 10 6 1 20 4 - 0.18 Rain
18 59 54 50 49 43 36 89 70 46 30.08 29.98 29.94 10 10 10 28 8 34 0.00  
19 59 52 46 40 33 22 66 47 26 30.14 30.10 30.06 10 10 10 14 6 - 0.00  
20 57 50 43 54 44 36 100 78 66 30.11 30.06 29.99 10 9 2 18 5 22 0.01 Rain
21 55 50 46 44 37 30 86 62 42 30.02 29.98 29.93 10 10 10 36 13 43 0.00  
22 55 50 44 40 30 27 63 48 40 30.12 30.05 29.98 10 10 10 37 24 44 0.00  
23 57 47 37 50 39 30 86 72 50 30.26 30.20 30.12 10 10 10 14 3 - 0.00  
24 55 50 46 44 37 32 77 58 40 30.22 30.13 30.05 10 10 10 21 12 - 0.00  
25 54 50 44 41 33 28 68 53 48 30.34 30.22 30.11 10 10 10 24 14 - 0.00  
26 54 46 37 42 34 30 83 66 41 30.53 30.46 30.34 10 10 8 5 2 - 0.00  
27 53 45 37 41 37 34 89 75 54 30.57 30.48 30.40 10 8 5 6 2 - 0.00  
28 57 48 39 44 40 37 93 70 51 30.41 30.34 30.27 10 9 6 15 4 - 0.00  
29 59 52 45 47 43 38 93 75 49 30.28 30.16 30.06 10 8 6 9 3 - 0.00  
30 57 50 43 47 43 39 89 73 51 30.07 30.03 29.99 10 8 6 9 2 - 0.00  
31 55 50 46 54 49 43 100 90 74 30.14 30.08 30.04 10 6 2 8 2 - 0.00