Dayton, Maryland Weather

21st Year of Service to the Local Community
Lat 39.24°N, Long 76.99°W, Elev 540ft (165m)


National Weather Service Forecasts for Central Maryland (Click Here)

National Weather Service Warnings for Central Maryland (Click Here)

Latest Weather Update at 3:01pm(EDT) on 5/22/19

 Temperature

Temperature (Comfortable)
Current: 67.0°F
    Rate of Change: 0.9°F/hr.
    High: 67.7°F at 2:54pm
    Low:  48.2°F at 6:44am

    Monthly High: 85.1°F on 5/19/19
    Monthly Low:  43.1°F on 5/15/19
    Yearly High:   85.1°F on 5/19/19
    Yearly Low:    0.7°F on 1/31/19
 

Humidity

Humidity & Related
Relative Humidity: 47%
    High: 95% at 7:57am
    Low:  42% at 11:37am
Dew Point: 46.1°F
Heat Index: 67.5°F
    High: 68.7°F at 2:54pm

    Monthly High: 93.3°F on 5/19/19
    Yearly High:   93.3°F on 5/19/19
 
Wind Rose Wind & Related (Calm)
Current: East South East at 0mph
    High: 9mph at 10:33am
    Monthly High: 25mph on 5/1/19
    Yearly High:   49mph on 2/25/19
Wind Chill: 67.0°F
    Low: 48.2°F at 6:44am
    Monthly Low: 41.1°F on 5/13/19
    Yearly Low:   -9.9°F on 1/21/19
    Wind Run Today: 0 miles
    Wind Run Month: 17 miles
    Wind Run Year:   3785 miles
 
Barometric Pressure Barometric Pressure (Falling)
Current: 1025.6mb
    Rate of Change: -0.3 mb/hr
    High: 1026.8mb at 9:47am
    Low:  1021.1mb at 12:04am


Yearly High: 1043.8mb on 2/9/19
Yearly Low:  993.8mb on 1/20/19

 
Daily Rain   Precipitation
Today: 0.00in
    Hi Rain Rate:   0.00in/hr at 12:00am
    Current Hour:  0.00in
    Last 24 Hours: 0.00in
 
   This Month:     5.23in
    Year-to-Date:  20.18in
 
UV Index UV Index
Current: 4.5
    Today's  High: 4.9 at 2:38pm
    Monthly High:   6.8 on 5/21/19
    Yearly High:     6.8 on 5/21/19

Solar Radiation

Solar Radiation
Current: 777.0 W/m2
    Today's High: 861.0 W/m2  at 2:38pm
    Monthly High:  1174.0W/m2 on 5/14/19
    Yearly High:     1174.0W/m2 on 5/14/19
 
Evapotranspiration Evapotranspiration
Today: 0.07in
    Monthly High:  0.14in on 5/19/19
    Yearly High:     0.15in on 4/27/19
 
Cooling Degree Days Degree Days
Cooling Degrees Days
    Today:  0.1
    Month:  50.2
    Year:    91.6
Heating Degree Days
     Today: 5.3
     Month: 115.4
     Year:   2940.0
Beyond the Stratosphere

Solar/Lunar Stats

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