Water Temperature of Stony Brook in Weston, MA

Current Water Temperature

33.6°F

Measurement Time: Thursday, January 29, 2026, 6:40 AM EST

Temperature Locations

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Local Points of Interest

South Quarry Pond; Stony Brook Reservoir; Waltham, MA

Stony Brook

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

Stony Brook Tributary, Waltham, MA (0.2 mi)
Stony Brook Tributary, Weston, MA (0.3 mi)
Stony Brook Reservoir Tributary, Weston, MA (1 mi)
Stony Brook, Weston, MA (1.5 mi)
Stony Brook, Waltham, MA (2 mi)
Cambridge Reservoir Tributary 3, Waltham, MA (3.6 mi)
Cambridge Reservoir, Lincoln, MA (3.6 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (4.7 mi)
Hobbs Brook, Lincoln, MA (4.7 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (4.7 mi)
Fresh Pond, Cambridge, MA (6.5 mi)
Shawsheen River, Bedford, MA (6.8 mi)
Nashua River, Clinton, MA (20.5 mi)
Gates Brook, West Boylston, MA (25.8 mi)
Stillwater River, Sterling, MA (26.7 mi)

Weather for Weston, Massachusetts

Current Weather

19°F
Overcast
Overcast
8.8°F
18.8°F
47%
WNW 8.3 mph
10 mph
8.6°F
10.3°F
0 in
0%
9 mi
1015 mbar
1.5

Five Day Weather Forecast

Sunny
Thu
H: 26°F
L: 0°F
Sunny
Fri
H: 18°F
L: -0°F
Sunny
Sat
H: 22°F
L: 2°F
Overcast
Sun
H: 22°F
L: 5°F
Partly Cloudy
Mon
H: 33°F
L: 13°F

Air Quality

AQI: 1 - Good
PM2.5: 12.75 μg/m3
PM10: 12.85 μg/m3
Carbon Monoxide: 267.85 μg/m3
Nitrogen Dioxide: 26.85 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 55 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:58 AM
Sunset: 4:55 PM
Daylight: 9 hrs 54 mins
Moonrise: 12:59 AM
Moon Transit: 9:17 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

10:52 AM - 1:22 PM
8:47 PM - 11:17 PM

Minor Periods

12:29 AM - 1:59 PM
4:01 AM - 5:31 AM

Action Rating: 2 out of 5

Cold Weather Advisory issued January 29 at 12:31AM EST until January 30 at 11:00AM EST by NWS Boston/Norton MA

Effective: Thu January 29, 2026, 12:31 AM
Expires: Thu January 29, 2026, 5:00 PM

* WHAT...Very cold wind chills as low as 20 below zero expected. * WHERE...Much of Southern New England except for the Berkshires, northern hills of Worcester County, Cape Cod and the Islands. * WHEN...From 7 PM this evening to 11 AM EST Friday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken.

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


Cold Weather Advisory issued January 29 at 12:31AM EST until January 30 at 11:00AM EST by NWS Boston/Norton MA

Effective: Thu January 29, 2026, 12:31 AM
Expires: Thu January 29, 2026, 5:00 PM

* WHAT...Very cold wind chills between 20 and 25 below zero expected. * WHERE...The eastern slopes of the Berkshires, as well as northern Worcester and northwest Middlesex Counties in Massachusetts. * WHEN...From 7 PM this evening to 11 AM EST Friday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes.

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


Cold Weather Advisory issued January 29 at 6:04AM EST until January 30 at 11:00AM EST by NWS Boston/Norton MA

Effective: Thu January 29, 2026, 6:04 AM
Expires: Thu January 29, 2026, 7:00 PM

* WHAT...Very cold wind chills as low as 20 below zero expected. * WHERE...Much of Southern New England except for the Berkshires, northern hills of Worcester County, as well as Cape Cod and the Islands. * WHEN...From 7 PM this evening to 11 AM EST Friday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken.

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


Cold Weather Advisory issued January 29 at 6:04AM EST until January 30 at 11:00AM EST by NWS Boston/Norton MA

Effective: Thu January 29, 2026, 6:04 AM
Expires: Thu January 29, 2026, 7:00 PM

* WHAT...Very cold wind chills between 20 and 25 below zero expected. * WHERE...The eastern slopes of the Berkshires, northern Worcester County and northwest Middlesex County in Massachusetts. * WHEN...From 7 PM this evening to 11 AM EST Friday. * IMPACTS...The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes.

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


Cold Weather Advisory issued January 29 at 12:59AM EST until January 30 at 10:00AM EST by NWS Gray ME

Effective: Thu January 29, 2026, 12:59 AM
Expires: Thu January 29, 2026, 1:00 PM

* WHAT...Very cold wind chills as low as 20 below expected. * WHERE...Portions of southwest Maine and central, northern, and southern New Hampshire. * WHEN...From midnight tonight to 10 AM EST Friday. * IMPACTS...The 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.


Cold Weather Advisory issued January 29 at 6:04AM EST until January 30 at 11:00AM EST by NWS Boston/Norton MA

Effective: Thu January 29, 2026, 6:04 AM
Expires: Thu January 29, 2026, 7:00 PM

* WHAT...Very cold wind chills as low as 20 below zero expected. * WHERE...Bristol RI County. * WHEN...From 7 PM this evening to 11 AM EST Friday. * IMPACTS...The cold wind chills as low as 20 below zero could result in hypothermia or frostbite if precautions are not taken.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.
Thursday, January 29, 2026

Weather Forecast

Sunny
26.4°F
0.1°F
10.9°F
63%
0 in
0%
0%
9.6 mph
0.3


Air Quality

AQI: 2 - Moderate
PM2.5: 18.64 μg/m3
PM10: 19.09 μg/m3
Carbon Monoxide: 285.33 μg/m3
Nitrogen Dioxide: 36.23 μg/m3
Sulphur Dioxide: 3.71 μg/m3
Ozone: 37.88 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 11:58 AM
Sunset: 4:55 PM
Daylight: 9 hrs 54 mins
Moonrise: 12:59 AM
Moon Transit: 9:17 PM
Moonset: 4:31 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.7%

Best Times for Fishing or Hunting

Major Periods

10:52 AM - 1:22 PM
8:47 PM - 11:17 PM

Minor Periods

12:29 AM - 1:59 PM
4:01 AM - 5:31 AM

Action Rating: 2 out of 5

Friday, January 30, 2026

Weather Forecast

Sunny
18.1°F
-0.1°F
9.9°F
64%
0 in
0%
0%
11.6 mph
0.4


Air Quality

AQI: 1 - Good
PM2.5: 6.91 μg/m3
PM10: 7.09 μg/m3
Carbon Monoxide: 196.13 μg/m3
Nitrogen Dioxide: 15.07 μg/m3
Sulphur Dioxide: 2.37 μg/m3
Ozone: 60.48 μg/m3

Astronomical

Sunrise: 7:01 AM
Sun Transit: 11:58 AM
Sunset: 4:57 PM
Daylight: 9 hrs 56 mins
Moonrise: 2:10 PM
Moon Transit: 10:21 PM
Moonset: 5:33 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.4%

Best Times for Fishing or Hunting

Major Periods

11:56 AM - 2:26 PM
12:00 AM - 12:00 AM

Minor Periods

1:40 PM - 3:10 PM
5:03 AM - 6:33 AM

Action Rating: 3 out of 5

Saturday, January 31, 2026

Weather Forecast

Sunny
21.7°F
2.3°F
10.9°F
69%
0 in
0%
0%
5.4 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 7.99 μg/m3
PM10: 8.28 μg/m3
Carbon Monoxide: 297.37 μg/m3
Nitrogen Dioxide: 18.33 μg/m3
Sulphur Dioxide: 2.92 μg/m3
Ozone: 54.56 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 11:58 AM
Sunset: 4:58 PM
Daylight: 9 hrs 58 mins
Moonrise: 3:28 PM
Moon Transit: 11:21 PM
Moonset: 6:23 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 97.9%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 PM
12:00 AM - 12:00 AM

Minor Periods

2:58 PM - 4:28 PM
5:53 AM - 7:23 AM

Action Rating: 4 out of 5

Sunday, February 1, 2026

Weather Forecast

Overcast
22.1°F
4.5°F
13.6°F
77%
0 in
0%
0%
13.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 8.45 μg/m3
PM10: 9.21 μg/m3
Carbon Monoxide: 273.43 μg/m3
Nitrogen Dioxide: 20.62 μg/m3
Sulphur Dioxide: 2.77 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 11:58 AM
Sunset: 4:59 PM
Daylight: 10 hrs 1 mins
Moonrise: 4:48 PM
Moon Transit: 12:00 AM
Moonset: 7:01 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:55 PM - 4:25 PM

Minor Periods

4:18 PM - 5:48 PM
6:31 AM - 8:01 AM

Action Rating: 4 out of 5

Monday, February 2, 2026

Weather Forecast

Partly Cloudy
32.6°F
12.8°F
20.6°F
89%
0 in
0%
0%
9.8 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.53 μg/m3
PM10: 5.05 μg/m3
Carbon Monoxide: 183.29 μg/m3
Nitrogen Dioxide: 8.89 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 81.08 μg/m3

Astronomical

Sunrise: 6:58 AM
Sun Transit: 11:58 AM
Sunset: 5:01 PM
Daylight: 10 hrs 3 mins
Moonrise: 6:04 PM
Moon Transit: 12:16 AM
Moonset: 7:31 AM
Moon Phase: Full
Moon Illumination: 99.4%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:47 PM - 5:17 PM

Minor Periods

5:34 PM - 7:04 PM
7:01 AM - 8:31 AM

Action Rating: 5 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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