Station Name: STONY BROOK AT RT 20 AT WALTHAM, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 105 feet

Nearest Address:
99 Sibley Rd
Weston, MA 02493
Middlesex County

GPS Coordinates: 42.368985, -71.2706123

Nearby Water Temperatures

Cold Weather Advisory issued January 23 at 3:34AM EST until January 24 at 10:00AM EST by NWS Boston/Norton MA

Effective: Fri January 23, 2026, 3:34 AM
Expires: Fri January 23, 2026, 4:45 PM

* WHAT...Very cold wind chills as low as 20 below expected in much of southern New England. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern and southern Rhode Island. * WHEN...From 10 PM this evening to 10 AM EST Saturday. * IMPACTS...The dangerously cold wind chills as low as 20 below zero could cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Winter Storm Watch issued January 23 at 3:33AM EST until January 26 at 7:00PM EST by NWS Boston/Norton MA

Effective: Fri January 23, 2026, 3:33 AM
Expires: Fri January 23, 2026, 4:45 PM

* WHAT...Heavy snow possible. Total snow accumulations between 8 and 15 inches possible. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern and southern Rhode Island. * WHEN...From Sunday morning through Monday evening. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible. The hazardous conditions could impact the Monday morning and evening commutes.

Monitor the latest forecasts for updates on this situation. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.

Winter Storm Warning issued January 23 at 12:28PM EST until January 26 at 8:00PM EST by NWS Boston/Norton MA

Effective: Fri January 23, 2026, 12:28 PM
Expires: Sat January 24, 2026, 7:00 AM

* WHAT...Heavy snow expected. Total snow accumulations between 12 and 17 inches. Winds gusting as high as 30 mph. * WHERE...Much of Southern New England excluding Martha's Vineyard, Nantucket and Block Island. * WHEN...From 7 AM Sunday to 8 PM EST Monday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Travel could be very difficult to impossible, especially if traveling overnight into the Monday morning commute. The hazardous conditions could impact the Monday morning and evening commutes.

If you must travel, keep an extra flashlight, food, and water in your vehicle in case of an emergency. Persons should consider delaying all travel. Motorists should use extreme caution if travel is absolutely necessary.

Cold Weather Advisory issued January 23 at 11:04AM EST until January 24 at 10:00AM EST by NWS Boston/Norton MA

Effective: Fri January 23, 2026, 11:04 AM
Expires: Sat January 24, 2026, 3:15 AM

* WHAT...Very cold wind chills as low as 15 below zero expected. * WHERE...Much of southern New England. * WHEN...From 10 PM this evening to 10 AM EST Saturday. * IMPACTS...Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Cold Weather Advisory issued January 23 at 12:26PM EST until January 24 at 10:00AM EST by NWS Gray ME

Effective: Fri January 23, 2026, 12:26 PM
Expires: Sat January 24, 2026, 12:30 AM

* WHAT...Very cold wind chills as low as 25-30 below expected. * WHERE...Portions of south central and southwest Maine and central and southern New Hampshire. * WHEN...From 1 AM to 10 AM EST Saturday. * IMPACTS...The cold wind chills as low as 25-30 below zero could cause frostbite on exposed skin in as little as 30 minutes. Frostbite and hypothermia will occur if unprotected skin is exposed to these temperatures.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Winter Storm Watch issued January 23 at 12:24PM EST until January 26 at 7:00PM EST by NWS Gray ME

Effective: Fri January 23, 2026, 12:24 PM
Expires: Sat January 24, 2026, 12:30 AM

* WHAT...Heavy snow possible. Total snow accumulations greater than 12 inches possible. * WHERE...Portions of southwest Maine and central, northern, and southern New Hampshire. * WHEN...From Sunday afternoon through Monday evening. * IMPACTS...Significant snowfall and periods of heavy snowfall rates will combine with low visibility to create very dangerous driving conditions. The hazardous conditions could impact the Monday morning and evening commutes.

Monitor the latest forecasts for updates on this situation. Persons should delay all travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility. Leave plenty of room between you and the motorist ahead of you, and allow extra time to reach your destination. Avoid sudden braking or acceleration, and be especially cautious on hills or when making turns. Make sure your car is winterized and in good working order.