Point Forecast: North Chelmsford MA
 42.62N 71.37W (Elev. 148 ft)
Last Update: 7:45 am EDT Jul 15, 2025
Tabular Forecast
[hide menu]Get as XML
Weather ElementsFire WeatherAviation Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)

Rain
Thunder
Fog
Mixing Height  
Trans. Wind  
20ft Wind  
Vent Rate (x1000 mph-ft)
Dispersion Index
Ceiling Height
Visibility
Thunder Potential

48-Hour Period Starting:       Back 2 Days  

Date07/1507/16
Hour (EDT)121314151617181920212223000102030405060708091011
Temperature (°F)868889898988888583797877757473727271717376798386
Dewpoint (°F)737373737273737373737373727271717171707173737474
Heat Index (°F)9396979796969692897978777576798994
Surface Wind (mph)235556532222323222222235
Wind DirSWSWSWSWSWSWWSWSWSWSSSWSWSWSWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)9172233282014232521181123151015161826252219
Precipitation Potential (%)689755342110000000000246
Relative Humidity (%)6561595957616167728285889093939797100979390827468
Rain------------------------------------------------
Thunder------------------------------------------------

Date07/17
Hour (EDT)121314151617181920212223000102030405060708091011
Temperature (°F)889091929291898785838179787776757575757576788083
Dewpoint (°F)747372727272727373737373737272727373737474757676
Heat Index (°F)979899999999979592898579787776757575757576788691
Surface Wind (mph)666666666655533355566677
Wind DirSWSWSWSWSSSSSSSWSWSWSWSWSWSWSWSWSWSWSWSWSW
Gust
Sky Cover (%)202021283441465156596366646361697684807672686568
Precipitation Potential (%)789111213141415161617192022242527313539444852
Relative Humidity (%)625754525254576267737882858687909294959594908580
Rain----------------SChcSChcSChcSChcSChcSChcSChcSChcChcChcChcChcChcChcChcChc
Thunder----------------SChcSChcSChcSChcSChcSChcSChcSChcSChcSChcSChcSChc------SChc

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
Graphical Hazardous Weather OutlookRegional Weather Conditions
Past Weather InformationInteractive Forecast Map
Weather StoryHome