San Francisco, CA

5:21 PM PST on December 16, 2017 (GMT -0800)
San Francisco International

Weather History for KSFO - January, 1998

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Month of January, 1998

  Max Avg Min Sum
Temperature  
Max Temperature 62 °F 57 °F 50 °F
Mean Temperature 58 °F 53 °F 44 °F
Min Temperature 54 °F 48 °F 39 °F
Degree Days  
Heating Degree Days (base 65) 20 12 7 379
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 3 0 94
Dew Point  
Dew Point 61 °F 49 °F 38 °F
Precipitation  
Precipitation 1.21 in 0.26 in 0.00 in 7.98 in
Snowdepth - - - -
Wind  
Wind 31 mph 7 mph 0 mph
Gust Wind 40 mph 25 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.29 in 30.01 in 29.65 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Jan. 23, 1998 Rise Set
Actual Time 7:19 AM PST 5:23 PM PST
Civil Twilight 6:51 AM PST 5:51 PM PST
Nautical Twilight 6:19 AM PST 6:23 PM PST
Astronomical Twilight 5:48 AM PST 6:54 PM PST
Moon 2:57 AM PST (1/23) 1:33 PM PST (1/23)
Length of Visible Light 11h 00m
Length of Day
10h 03m
Waning Crescent, 22% of the Moon is Illuminated
Jan 23
Waning Crescent
Jan 27
New
Feb 3
First Quarter
Feb 11
Full
Feb 19
Last Quarter

Daily Weather History & Observations

1998 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 52 48 52 50 48 100 91 72 30.03 29.92 29.78 10 6 2 18 6 - 0.01 Rain
2 59 55 51 54 53 51 100 96 81 29.82 29.76 29.72 10 6 1 26 10 32 0.88 Rain
3 57 54 51 52 50 45 100 89 64 29.84 29.79 29.72 10 9 3 24 10 36 0.43 Rain
4 55 50 44 50 44 41 100 81 59 30.10 29.92 29.72 10 10 8 17 9 31 0.25 Rain
5 50 44 39 45 42 39 100 89 74 30.27 30.21 30.10 10 9 8 6 3 - 0.00  
6 54 48 41 48 44 38 100 88 66 30.29 30.20 30.15 10 7 2 10 5 - 0.24 Rain
7 50 49 48 49 47 45 100 96 89 30.19 30.14 30.11 10 8 2 17 9 - 0.10 Rain
8 51 48 46 47 46 45 100 90 83 30.10 29.99 29.88 10 9 5 14 9 - 0.00  
9 52 50 48 52 49 46 100 94 87 29.88 29.75 29.67 8 5 2 15 5 - 0.31 Rain
10 57 54 51 56 54 51 100 97 90 30.09 29.93 29.78 10 6 2 17 8 20 0.42 Rain
11 57 54 52 57 54 50 100 96 86 30.13 30.06 29.99 10 6 2 14 8 23 0.56 Rain
12 60 56 51 58 54 48 100 92 77 30.14 29.97 29.90 10 5 1 24 13 33 1.20 Rain
13 55 50 46 51 49 46 100 91 74 30.25 30.20 30.15 10 10 8 9 5 - 0.02 Rain
14 57 54 51 54 51 48 100 92 86 30.22 30.13 30.07 10 9 2 15 6 - 0.22 Rain
15 61 57 53 61 58 53 100 98 93 30.08 29.98 29.93 10 4 1 24 11 33 0.43 Rain
16 62 58 53 59 55 53 100 93 78 30.20 30.13 30.07 10 6 2 13 5 - 0.02 Fog , Rain
17 61 58 54 57 54 53 97 89 78 30.25 30.18 30.09 10 10 6 9 6 - 0.00  
18 61 56 50 54 50 43 100 88 67 30.05 29.87 29.74 10 6 0 31 10 40 1.21 Fog , Rain
19 55 50 45 45 43 40 93 79 57 30.04 29.98 29.90 10 10 7 17 7 - 0.16 Rain
20 55 50 45 46 44 42 93 83 67 30.08 30.04 30.01 10 10 9 7 2 - 0.01 Rain
21 55 50 46 46 44 41 90 81 68 30.18 30.13 30.09 10 9 5 9 4 - 0.00  
22 55 50 44 50 46 42 96 86 74 30.20 30.15 30.11 10 8 4 10 3 - 0.00  
23 57 51 45 52 47 41 94 84 70 30.12 30.09 30.03 10 9 5 17 5 28 0.03 Rain
24 60 53 46 53 50 47 100 91 69 30.17 30.13 30.09 10 10 5 12 4 - 0.01  
25 57 52 46 53 50 46 100 96 87 30.16 30.12 30.09 10 4 0 13 3 - 0.01 Fog
26 62 58 53 57 54 52 100 92 80 30.10 30.03 29.94 10 7 2 21 8 26 0.09 Rain
27 60 56 53 55 54 52 100 95 80 30.08 30.04 30.01 10 7 1 9 4 - 0.00  
28 62 56 51 54 52 51 100 86 67 30.01 29.86 29.65 10 7 2 28 8 31 0.40 Rain
29 59 54 48 52 49 46 97 81 64 30.10 29.91 29.70 10 8 2 16 9 23 0.71 Rain
30 57 51 45 50 47 43 97 87 74 30.08 29.93 29.72 10 10 9 21 6 - 0.01  
31 59 55 51 52 49 45 100 84 67 29.85 29.80 29.70 10 8 1 17 8 - 0.25 Rain