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Dayton, Maryland - Lat 39.34˚N, Long 76.99˚W, Elev 585ft (178m)
(Between Baltimore & Washington, DC)
Latest Weather Update at 11:59pm(EDT) on 7/23/08
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National Weather Service Forecasts for Central Maryland

National Weather Service Warnings for Central Maryland

 

Temperature

Temperature (Comfortable)
Current: 65°F
    Rate of Change: -1.5°F/hr.
    High: 80°F at 5:11pm
    Low:  65°F at 11:54pm
    Monthly High: 95°F on 7/20/08
    Monthly Low:  60°F on 7/1/08
    Yearly High:   101°F on 6/10/08
    Yearly Low:    9°F on 1/21/08
Avg High @ BWI:  88°F
Avg Low @ BWI:   66°F
Record Hi @ BWI: 97°F in 1987
Record Lo @ BWI: 55°F in 1985
 

Humidity

Humidity & Related
Relative Humidity: 100%
  
High: 100% at 2:29pm
   Low:  68% at 11:05am
Dew Point: 65°F
Heat Index: 72°F
    High: 85°F at 5:11pm
    Monthly High: 99°F on 7/17/08
    Yearly High:   110°F on 6/10/08
 

Wind Rose

Wind & Related (Calm)
Current: West South West at 0mph
    High: 15mph at 1:54am
    Monthly High: 16mph on 7/1/08
    Yearly High:   46mph on 1/30/08
Wind Chill: 65°F
    Low: 65°F at 11:54pm
    Monthly Low: 60°F on 7/1/08
    Yearly Low:   -6°F on 2/11/08
    Wind Run Today: 3 miles
    Wind Run Month: 33 miles
    Wind Run Year:   5599 miles
 

Barometric Pressure

Barometric Pressure (Steady)
Current: 29.93in-hg
    Rate of Change: -0.000 in-hg/hr
    High: 29.96in-hg at 10:08am
    Low:  29.85in-hg at 8:29pm
Yearly High: 30.85in-hg on 1/21/08
Yearly Low:  29.23in-hg on 3/8/08
 

Daily Rain

 

Precipitation
Today: 0.53in
    Hi Rain Rate:   0.285in/hr at 11:13pm
    Current Hour:  0.07in
    Last 24 Hours: 0.53in
 
   This Month:     1.84in
    Year-to-Date:  28.07in
Official MTD Rainfall @ BWI: 2.26in
Official YTD Rainfall @ BWI: 25.99in
 

UV Index

UV Index
Current: 0.0
    Today's  High: 3.5 at 10:16am
    Monthly High:   9.2 on 7/14/08
    Yearly High:     9.2 on 7/14/08
 

Solar Radiation

Solar Radiation
Current: 0 W/m2
    Today's High: 744 W/m2  at 10:16am
    Monthly High:  1181W/m2 on 7/4/08
    Yearly High:     1248W/m2 on 5/10/08
 
 Evapotranspiration Evapotranspiration
Today: 0.08in
    Monthly High:  0.19in on 7/2/08
    Yearly High:     0.21in on 6/9/08
 

Cooling Degree Days

Degree Days
Cooling Degrees Days
    Today:  9.7
    Month:  249.7
    Year:    701.0
Heating Degree Days
     Today: 0.0
     Month: 2.9
     Year:   2861.1
Beyond the Stratosphere

Solar Activity Level
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X-ray Status
Status
Status

Geomagnetic Status

 

 

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