Station Name: PATUXENT RIVER BELOW BRIGHTON DAM NEAR BRIGHTON,MD
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 358 feet

Nearest Address:
14199 Brighton Dam Rd
Brighton, MD 21029
Montgomery County

GPS Coordinates: 39.19219444, -77.00438889

Nearby Water Temperatures

Extreme Heat Warning issued July 2 at 3:14AM EDT until July 2 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 2, 2026, 3:14 AM
Expires: Thu July 2, 2026, 11:15 AM

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 expected. * WHERE...DC, and portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, from 10 AM this morning to 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Extreme Heat Warning issued July 2 at 3:14AM EDT until July 3 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 2, 2026, 3:14 AM
Expires: Thu July 2, 2026, 11:15 AM

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 113 expected. * WHERE...DC, and portions of central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, from 10 AM this morning to 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Extreme Heat Warning issued July 2 at 8:36AM EDT until July 3 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 2, 2026, 8:36 AM
Expires: Thu July 2, 2026, 5:00 PM

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, until 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. For the Extreme Heat Watch, from Saturday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Extreme Heat Watch issued July 2 at 8:36AM EDT until July 4 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 2, 2026, 8:36 AM
Expires: Thu July 2, 2026, 5:00 PM

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, until 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. For the Extreme Heat Watch, from Saturday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.

Extreme Heat Warning issued July 2 at 8:36AM EDT until July 2 at 8:00PM EDT by NWS Baltimore MD/Washington DC

Effective: Thu July 2, 2026, 8:36 AM
Expires: Thu July 2, 2026, 5:00 PM

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, until 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. For the Extreme Heat Watch, from Saturday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.