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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 9:59am(EDT) on 9/7/08
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National Weather Service Forecasts for Central Maryland

National Weather Service Warnings for Central Maryland

 

Temperature

Temperature (Comfortable)
Current: 69°F
    Rate of Change: 3.5°F/hr.
    High: 70°F at 12:13am
    Low:  60°F at 7:32am
    Monthly High: 92°F on 9/3/08
    Monthly Low:  58°F on 9/1/08
    Yearly High:   101°F on 6/10/08
    Yearly Low:    9°F on 1/21/08
Avg High @ BWI:  81°F
Avg Low @ BWI:   60°F
Record Hi @ BWI: 101°F in 1881
Record Lo @ BWI: 45°F in 1962
 

Humidity

Humidity & Related
Relative Humidity: 68%
  
High: 100% at 12:00am
   Low:  68% at 9:43am
Dew Point: 58°F
Heat Index: 72°F
    High: 77°F at 12:13am
    Monthly High: 94°F on 9/4/08
    Yearly High:   110°F on 6/10/08
 

Wind Rose

Wind & Related (Calm)
Current: South at 9mph
    High: 12mph at 2:14am
    Monthly High: 21mph on 9/6/08
    Yearly High:   46mph on 1/30/08
Wind Chill: 69°F
    Low: 60°F at 7:32am
    Monthly Low: 58°F on 9/1/08
    Yearly Low:   -6°F on 2/11/08
    Wind Run Today: 3 miles
    Wind Run Month: 33 miles
    Wind Run Year:   5745 miles
 

Barometric Pressure

Barometric Pressure (Steady)
Current: 30.06in-hg
    Rate of Change: 0.014 in-hg/hr
    High: 30.06in-hg at 9:59am
    Low:  29.88in-hg at 12:00am
Yearly High: 30.85in-hg on 1/21/08
Yearly Low:  29.23in-hg on 3/8/08
 

Daily Rain

 

Precipitation
Today: 0.00in
    Hi Rain Rate:   0.000in/hr at 12:00am
    Current Hour:  0.00in
    Last 24 Hours: 1.45in
 
   This Month:     2.05in
    Year-to-Date:  32.77in
Official MTD Rainfall @ BWI: 1.72in
Official YTD Rainfall @ BWI: 32.40in
 

UV Index

UV Index
Current: 2.9
    Today's  High: 2.9 at 9:59am
    Monthly High:   6.6 on 9/1/08
    Yearly High:     9.2 on 7/14/08
 

Solar Radiation

Solar Radiation
Current: 544 W/m2
    Today's High: 544 W/m2  at 9:59am
    Monthly High:  876W/m2 on 9/5/08
    Yearly High:     1248W/m2 on 5/10/08
 
 Evapotranspiration Evapotranspiration
Today: 0.00in
    Monthly High:  0.16in on 9/2/08
    Yearly High:     0.21in on 6/9/08
 

Cooling Degree Days

Degree Days
Cooling Degrees Days
    Today:  0.5
    Month:  56.5
    Year:    1062.2
Heating Degree Days
     Today: 0.7
     Month: 5.1
     Year:   2893.3
Beyond the Stratosphere

Solar Activity Level
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X-ray Status
Status
Status

Geomagnetic Status

 

 

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