Weather History for Half Moon Bay, CA

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Thursday, April 18, 2013

  Actual Average Record
Temperature  
Mean Temperature 48 °F -  
Max Temperature 59 °F 59 °F 59 °F (2012)
Min Temperature 37 °F 45 °F 37 °F (2013)
Degree Days  
Heating Degree Days 17    
Growing Degree Days 0 (Base 50)    
Moisture  
Dew Point 43 °F    
Average Humidity 83    
Maximum Humidity 100    
Minimum Humidity 63    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.26 in    
Wind  
Wind Speed 6 mph (North)    
Max Wind Speed 18 mph    
Max Gust Speed 24 mph    
Visibility 4 miles    
Events Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Apr. 18, 2013 Rise Set
Actual Time 6:30 AM PDT 7:48 PM PDT
Civil Twilight 6:03 AM PDT 8:15 PM PDT
Nautical Twilight 5:30 AM PDT 8:48 PM PDT
Astronomical Twilight 4:56 AM PDT 9:22 PM PDT
Moon 12:48 PM PDT (4/18) 2:04 AM PDT (4/18)
Length of Visible Light 14h 12m
Length of Day
13h 17m
First Quarter, 53% of the Moon is Illuminated
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New
May 17
First Quarter

Hourly Weather History & Observations

Time (PDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:10 AM 42.8 °F 41.1 °F 39.2 °F 87% 30.26 in 5.0 mi NE 3.5 mph - N/A Rain Light Rain
12:30 AM 41.0 °F - 37.4 °F 87% 30.26 in 5.0 mi Calm Calm - N/A Rain Light Rain
12:50 AM 41.0 °F 39.0 °F 37.4 °F 87% 30.26 in 4.0 mi NE 3.5 mph - N/A Rain Light Rain
1:10 AM 41.0 °F - 37.4 °F 87% 30.25 in 4.0 mi Calm Calm - N/A   Overcast
1:30 AM 39.2 °F - 37.4 °F 93% 30.26 in 5.0 mi Calm Calm - N/A   Overcast
1:50 AM 39.2 °F - 37.4 °F 93% 30.26 in 6.0 mi Calm Calm - N/A   Overcast
2:10 AM 39.2 °F - 37.4 °F 93% 30.26 in 7.0 mi Calm Calm - N/A   Overcast
2:30 AM 39.2 °F 37.0 °F 37.4 °F 93% 30.25 in 5.0 mi ENE 3.5 mph - N/A   Overcast
2:50 AM 39.2 °F 35.9 °F 37.4 °F 93% 30.24 in 5.0 mi ESE 4.6 mph - N/A   Overcast
3:10 AM 39.2 °F 37.0 °F 35.6 °F 87% 30.24 in 5.0 mi West 3.5 mph - N/A   Overcast
3:30 AM 39.2 °F - 37.4 °F 93% 30.24 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
3:50 AM 39.2 °F - 37.4 °F 93% 30.24 in 5.0 mi Calm Calm - N/A   Mostly Cloudy
4:10 AM 39.2 °F - 37.4 °F 93% 30.25 in 4.0 mi Calm Calm - N/A   Overcast
4:30 AM 37.4 °F - 35.6 °F 93% 30.25 in 5.0 mi Calm Calm - N/A   Overcast
4:50 AM 37.4 °F - 35.6 °F 93% 30.25 in 5.0 mi Calm Calm - N/A   Overcast
5:10 AM 39.2 °F 37.0 °F 37.4 °F 93% 30.25 in 4.0 mi NE 3.5 mph - N/A   Overcast
5:30 AM 37.4 °F 34.9 °F 37.4 °F 100% 30.25 in 4.0 mi WNW 3.5 mph - N/A   Overcast
5:50 AM 37.4 °F - 37.4 °F 100% 30.25 in 3.0 mi Calm Calm - N/A   Overcast
6:10 AM 37.4 °F - 37.4 °F 100% 30.25 in 3.0 mi Calm Calm - N/A   Overcast
6:30 AM 37.4 °F - 35.6 °F 93% 30.26 in 5.0 mi Calm Calm - N/A   Overcast
6:50 AM 37.4 °F - 35.6 °F 93% 30.27 in 3.0 mi Calm Calm - N/A   Overcast
7:10 AM 37.4 °F - 37.4 °F 100% 30.27 in 3.0 mi Calm Calm - N/A   Overcast
7:30 AM 41.0 °F - 39.2 °F 93% 30.28 in 3.0 mi Calm Calm - N/A   Overcast
7:50 AM 44.6 °F - 41.0 °F 87% 30.28 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
8:10 AM 46.4 °F - 44.6 °F 93% 30.28 in 3.0 mi Calm Calm - N/A   Scattered Clouds
8:30 AM 50.0 °F - 46.4 °F 87% 30.28 in 2.5 mi Calm Calm - N/A   Clear
8:50 AM 51.8 °F - 46.4 °F 82% 30.28 in 2.5 mi NW 8.1 mph - N/A   Haze
9:10 AM 53.6 °F - 46.4 °F 77% 30.27 in 3.0 mi NW 11.5 mph - N/A   Haze
9:30 AM 53.6 °F - 46.4 °F 77% 30.28 in 4.0 mi NNW 12.7 mph - N/A   Haze
9:50 AM 55.4 °F - 46.4 °F 72% 30.28 in 4.0 mi NNW 12.7 mph - N/A   Haze
10:10 AM 55.4 °F - 46.4 °F 72% 30.28 in 5.0 mi NNW 15.0 mph - N/A   Haze
10:30 AM 55.4 °F - 46.4 °F 72% 30.28 in 5.0 mi NNW 13.8 mph - N/A   Haze
10:50 AM 57.2 °F - 46.4 °F 67% 30.28 in 5.0 mi NNW 12.7 mph - N/A   Haze
11:10 AM 57.2 °F - 46.4 °F 67% 30.28 in 5.0 mi NNW 13.8 mph - N/A   Haze
11:30 AM 57.2 °F - 46.4 °F 67% 30.29 in 5.0 mi North 15.0 mph - N/A   Haze
11:50 AM 57.2 °F - 48.2 °F 72% 30.29 in 4.0 mi North 12.7 mph - N/A   Haze
12:10 PM 55.4 °F - 48.2 °F 77% 30.29 in 4.0 mi NNW 17.3 mph - N/A   Haze
12:30 PM 55.4 °F - 48.2 °F 77% 30.28 in 4.0 mi NNW 17.3 mph - N/A   Haze
12:50 PM 57.2 °F - 48.2 °F 72% 30.28 in 5.0 mi NNW 17.3 mph 24.2 mph N/A   Haze
1:30 PM 59.0 °F - 46.4 °F 63% 30.27 in 5.0 mi NNW 15.0 mph - N/A   Haze
1:50 PM 57.2 °F - 46.4 °F 67% 30.27 in 5.0 mi NNW 15.0 mph - N/A   Haze
2:10 PM 59.0 °F - 46.4 °F 63% 30.27 in 6.0 mi NNW 16.1 mph - N/A   Haze
2:30 PM 59.0 °F - 48.2 °F 67% 30.27 in 5.0 mi NNW 17.3 mph - N/A   Haze
2:50 PM 57.2 °F - 48.2 °F 72% 30.26 in 5.0 mi NNW 17.3 mph - N/A   Haze
3:10 PM 55.4 °F - 46.4 °F 72% 30.26 in 4.0 mi NNW 17.3 mph - N/A   Haze
3:30 PM 55.4 °F - 48.2 °F 77% 30.26 in 4.0 mi NNW 17.3 mph - N/A   Haze
3:50 PM 55.4 °F - 48.2 °F 77% 30.25 in 3.0 mi NNW 17.3 mph - N/A   Haze
4:10 PM 55.4 °F - 46.4 °F 72% 30.25 in 4.0 mi NNW 16.1 mph - N/A   Haze
4:30 PM 55.4 °F - 46.4 °F 72% 30.25 in 5.0 mi NNW 18.4 mph - N/A   Haze
4:50 PM 55.4 °F - 46.4 °F 72% 30.24 in 4.0 mi NNW 18.4 mph 23.0 mph N/A   Haze
5:10 PM 55.4 °F - 46.4 °F 72% 30.24 in 4.0 mi NNW 15.0 mph - N/A   Haze
5:30 PM 55.4 °F - 46.4 °F 72% 30.24 in 4.0 mi NNW 15.0 mph - N/A   Haze
5:50 PM 53.6 °F - 46.4 °F 77% 30.24 in 4.0 mi NNW 13.8 mph - N/A   Haze
6:10 PM 53.6 °F - 46.4 °F 77% 30.24 in 4.0 mi NNW 15.0 mph - N/A   Haze
6:30 PM 51.8 °F - 46.4 °F 82% 30.24 in 3.0 mi NNW 13.8 mph - N/A   Haze
6:50 PM 51.8 °F - 46.4 °F 82% 30.24 in 3.0 mi NNW 16.1 mph - N/A   Haze
7:10 PM 50.0 °F - 46.4 °F 87% 30.24 in 3.0 mi North 10.4 mph - N/A   Haze
7:30 PM 50.0 °F - 46.4 °F 87% 30.25 in 3.0 mi NNW 11.5 mph - N/A   Haze
7:50 PM 50.0 °F - 46.4 °F 87% 30.24 in 3.0 mi NNE 3.5 mph - N/A   Clear
8:30 PM 48.2 °F - 44.6 °F 87% 30.25 in 5.0 mi North 4.6 mph - N/A   Clear
8:50 PM 48.2 °F - 44.6 °F 87% 30.25 in 4.0 mi North 3.5 mph - N/A   Clear
9:10 PM 48.2 °F - 44.6 °F 87% 30.26 in 4.0 mi NNW 3.5 mph - N/A   Partly Cloudy
9:30 PM 46.4 °F 45.2 °F 44.6 °F 93% 30.27 in 4.0 mi NNE 3.5 mph - N/A   Clear
9:50 PM 46.4 °F 44.3 °F 42.8 °F 87% 30.27 in 5.0 mi NNW 4.6 mph - N/A   Clear
10:10 PM 44.6 °F - 41.0 °F 87% 30.27 in 5.0 mi Calm Calm - N/A   Partly Cloudy
10:30 PM 44.6 °F - 41.0 °F 87% 30.27 in 5.0 mi Calm Calm - N/A   Scattered Clouds
10:50 PM 44.6 °F 43.1 °F 41.0 °F 87% 30.27 in 5.0 mi East 3.5 mph - N/A   Scattered Clouds
11:10 PM 44.6 °F 43.1 °F 41.0 °F 87% 30.26 in 5.0 mi NE 3.5 mph - N/A   Clear
11:30 PM 44.6 °F 43.1 °F 41.0 °F 87% 30.25 in 5.0 mi East 3.5 mph - N/A   Mostly Cloudy
11:50 PM 42.8 °F - 41.0 °F 93% 30.25 in 5.0 mi Calm Calm - N/A   Overcast