Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

40.3°F

Measurement Time: Tuesday, January 6, 2026, 12:00 PM EST

Temperature Locations

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Local Points of Interest

Cambridge Reservoir (Hobbs Brook Basin)

Stony Brook

Station Name: HOBBS BK BELOW CAMBRIDGE RES NR KENDALL GREEN, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 167 feet

Nearest Address:
Winter St
Waltham, MA 02451
Middlesex County

GPS Coordinates: 42.3981512, -71.2733903

Nearby Water Temperatures

Stony Brook, Weston, MA (1.2 mi)
Cambridge Reservoir, Lincoln, MA (1.6 mi)
Cambridge Reservoir Tributary 3, Waltham, MA (1.7 mi)
Stony Brook Tributary, Waltham, MA (1.8 mi)
Stony Brook Tributary, Weston, MA (1.9 mi)
Stony Brook, Weston, MA (2 mi)
Hobbs Brook, Lincoln, MA (2.7 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (2.7 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (2.7 mi)
Stony Brook Reservoir Tributary, Weston, MA (3 mi)
Shawsheen River, Bedford, MA (4.8 mi)
Fresh Pond, Cambridge, MA (6.6 mi)
Nashua River, Clinton, MA (20.1 mi)
Gates Brook, West Boylston, MA (25.7 mi)
Stillwater River, Sterling, MA (26.4 mi)

Weather for Waltham, Massachusetts

Current Weather

30°F
Partly cloudy
Partly cloudy
27.2°F
34.5°F
81%
ENE 2.9 mph
4.5 mph
29.7°F
31.1°F
0 in
75%
6 mi
1014 mbar
0

Five Day Weather Forecast

Patchy moderate snow
Tue
H: 38°F
L: 24°F
Moderate rain
Wed
H: 37°F
L: 30°F
Sunny
Thu
H: 43°F
L: 31°F
Patchy rain nearby
Fri
H: 48°F
L: 31°F
Patchy rain nearby
Sat
H: 53°F
L: 42°F

Air Quality

AQI: 1 - Good
PM2.5: 24.95 μg/m3
PM10: 30.15 μg/m3
Carbon Monoxide: 318.85 μg/m3
Nitrogen Dioxide: 46.25 μg/m3
Sulphur Dioxide: 5.25 μg/m3
Ozone: 19 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 8:29 PM
Moon Transit: 2:31 AM
Moonset: 9:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
5:00 PM - 7:30 PM

Minor Periods

7:59 PM - 9:29 PM
9:02 AM - 10:32 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued January 6 at 12:22AM EST until January 7 at 10:00AM EST by NWS Boston/Norton MA

Effective: Tue January 6, 2026, 12:22 AM
Expires: Tue January 6, 2026, 3:00 PM

* WHAT...Freezing rain expected. Most locations along the I-95 corridor experience a light glace of ice, though locations across interior southern New England may see ice accumulation between 0.1" and 0.2". * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern Rhode Island. * WHEN...From 7 PM this evening to 10 AM EST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

Slow down and use caution while traveling. Prepare for possible power outages.


Winter Weather Advisory issued January 6 at 1:04PM EST until January 7 at 10:00AM EST by NWS Boston/Norton MA

Effective: Tue January 6, 2026, 1:04 PM
Expires: Wed January 7, 2026, 2:15 AM

* WHAT...Mixed precipitation expected. Total snow accumulations up to one inch and ice accumulations up to two tenths of an inch. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern Rhode Island. * WHEN...From 7 PM this evening to 10 AM EST Wednesday. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Plan on slippery road conditions. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 5 at 11:42PM EST until January 7 at 10:00AM EST by NWS Gray ME

Effective: Mon January 5, 2026, 11:42 PM
Expires: Tue January 6, 2026, 1:45 PM

...A PERIOD OF SNOW AND MIXED PRECIP IMPACT THE REGION TUESDAY NIGHT INTO WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to two inches, sleet accumulations up to one tenth of an inch, and ice accumulations up to two tenths of an inch. * WHERE...Portions of south central and southwest Maine and central, northern, and southern New Hampshire. * WHEN...From 7 PM Tuesday to 10 AM EST Wednesday. * IMPACTS...Light snowfall accumulations are expected as periods of snow impact the region. Be prepared for variable travel conditions and slow down when you approach areas of heavier snowfall as road conditions could change rapidly. A period of mixed precipitation is expected with air temperatures remaining below freezing. Expect slippery road conditions and avoid travel if possible. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to snow covered roads. The hazardous conditions could impact the Wednesday morning commute.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org


Winter Weather Advisory issued January 6 at 12:27PM EST until January 7 at 10:00AM EST by NWS Gray ME

Effective: Tue January 6, 2026, 12:27 PM
Expires: Wed January 7, 2026, 10:00 AM

...A PERIOD OF SNOW AND MIXED PRECIP IMPACTS THE REGION THIS EVENING INTO WEDNESDAY... * WHAT...Mixed precipitation expected. Total snow accumulations up to two inches, sleet accumulations up to one tenth of an inch, and ice accumulations around one tenth of an inch. Localized ice amounts up to two tenths of an inch possible in southern NH. * WHERE...Portions of south central and southwest Maine and central, northern, and southern New Hampshire. * WHEN...From 7 PM this evening to 10 AM EST Wednesday. * IMPACTS...Light snowfall accumulations are expected as periods of snow impact the region. Be prepared for variable travel conditions and slow down when you approach areas of heavier snowfall as road conditions could change rapidly. A period of mixed precipitation is also expected with air temperatures remaining below freezing. Expect slippery road conditions and avoid travel if possible. Even light snowfall amounts can accumulate on roads and cause dangerous driving conditions due to snow covered roads. The hazardous conditions could impact the Wednesday morning commute.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org


Tuesday, January 6, 2026

Weather Forecast

Patchy moderate snow
38.1°F
24.3°F
29.5°F
84%
0.02 in
80%
11%
4.5 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 21.16 μg/m3
PM10: 23.65 μg/m3
Carbon Monoxide: 363.09 μg/m3
Nitrogen Dioxide: 43.1 μg/m3
Sulphur Dioxide: 6.24 μg/m3
Ozone: 20.32 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:28 PM
Daylight: 9 hrs 14 mins
Moonrise: 8:29 PM
Moon Transit: 2:31 AM
Moonset: 9:32 AM
Moon Phase: Waning Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

2:01 AM - 4:31 AM
5:00 PM - 7:30 PM

Minor Periods

7:59 PM - 9:29 PM
9:02 AM - 10:32 AM

Action Rating: 2 out of 5

Wednesday, January 7, 2026

Weather Forecast

Moderate rain
36.9°F
29.7°F
33.9°F
94%
0.66 in
86%
19%
11.6 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 14.65 μg/m3
PM10: 16.93 μg/m3
Carbon Monoxide: 324.41 μg/m3
Nitrogen Dioxide: 34.73 μg/m3
Sulphur Dioxide: 4.96 μg/m3
Ozone: 26.24 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moonrise: 9:38 PM
Moon Transit: 3:18 AM
Moonset: 9:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
5:45 PM - 8:15 PM

Minor Periods

9:08 PM - 10:38 PM
9:25 AM - 10:55 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Sunny
42.8°F
30.7°F
34.5°F
81%
0 in
0%
0%
8.5 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.44 μg/m3
PM10: 8.55 μg/m3
Carbon Monoxide: 309.77 μg/m3
Nitrogen Dioxide: 23.61 μg/m3
Sulphur Dioxide: 5.03 μg/m3
Ozone: 33.12 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 10:44 PM
Moon Transit: 4:02 AM
Moonset: 10:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:32 AM - 6:02 AM
6:27 PM - 8:57 PM

Minor Periods

10:14 PM - 11:44 PM
9:45 AM - 11:15 AM

Action Rating: 2 out of 5

Friday, January 9, 2026

Weather Forecast

Patchy rain nearby
47.5°F
31.3°F
39.9°F
88%
0.05 in
84%
0%
12.8 mph
0.1


Air Quality

AQI: 2 - Moderate
PM2.5: 21.57 μg/m3
PM10: 23.81 μg/m3
Carbon Monoxide: 397.18 μg/m3
Nitrogen Dioxide: 39.41 μg/m3
Sulphur Dioxide: 6.05 μg/m3
Ozone: 18.52 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:31 PM
Daylight: 9 hrs 18 mins
Moonrise: 11:48 PM
Moon Transit: 4:44 AM
Moonset: 10:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
7:09 PM - 9:39 PM

Minor Periods

12:00 AM - 12:00 AM
10:04 AM - 11:34 AM

Action Rating: 3 out of 5

Saturday, January 10, 2026

Weather Forecast

Patchy rain nearby
52.6°F
41.8°F
48.3°F
97%
0.2 in
83%
0%
11 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 9.72 μg/m3
PM10: 11.65 μg/m3
Carbon Monoxide: 221.75 μg/m3
Nitrogen Dioxide: 19.65 μg/m3
Sulphur Dioxide: 4.76 μg/m3
Ozone: 48.38 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:52 AM
Sunset: 4:32 PM
Daylight: 9 hrs 19 mins
Moonrise: 12:48 AM
Moon Transit: 5:25 AM
Moonset: 10:53 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
7:50 PM - 10:20 PM

Minor Periods

10:23 AM - 11:53 AM
12:00 AM - 12:00 AM

Action Rating: 3 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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