Weather History for Eureka, CA

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Wednesday, January 21, 1987

  Actual Average Record
Temperature  
Mean Temperature 46 °F 49 °F  
Max Temperature 52 °F 56 °F 75 °F (1981)
Min Temperature 40 °F 41 °F 25 °F (1937)
Degree Days  
Heating Degree Days 19 17  
Month to date heating degree days 357  
Since 1 July heating degree days 2312  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 35 °F    
Average Humidity 64    
Maximum Humidity 76    
Minimum Humidity 40    
Precipitation  
Precipitation 0.00 in 0.20 in 4.96 in (1903)
Month to date precipitation 4.57  
Year to date precipitation 4.57  
Since 1 July precipitation 21.62  
Snow  
Snow 0.00 in 0.00 in 0.40 in (2002)
Month to date snowfall 0.0  
Since 1 July snowfall T  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.23 in    
Wind  
Wind Speed 7 mph (SSW)    
Max Wind Speed 12 mph    
Max Gust Speed -    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

Jan. 21, 1987 Rise Set
Actual Time 7:35 AM PST 5:20 PM PST
Civil Twilight 7:06 AM PST 5:50 PM PST
Nautical Twilight 6:32 AM PST 6:23 PM PST
Astronomical Twilight 6:00 AM PST 6:56 PM PST
Moon No Moon Rise 10:51 AM PST (1/21)
Length of Visible Light 10h 43m
Length of Day
9h 44m
Waning Gibbous, 62% of the Moon is Illuminated
Jan 21
Waning Gibbous
Jan 22
Last Quarter
Jan 29
New
Feb 5
First Quarter
Feb 13
Full

Hourly Weather History & Observations

Time (PST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
4:00 AM 40.3 °F 37.1 °F 33.3 °F 76% 30.25 in 7.0 mi ESE 4.6 mph - N/A   Mostly Cloudy
10:00 AM 52.3 °F - 28.8 °F 40% 30.25 in 7.0 mi SW 6.9 mph - N/A   Scattered Clouds
10:00 PM 48.9 °F - 41.7 °F 76% 30.19 in 10.0 mi SW 11.5 mph - N/A   Overcast