Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

39.0°F

Measurement Time: Saturday, January 17, 2026, 12:00 AM 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

28°F
Overcast
Overcast
20.4°F
30.8°F
50%
SSW 7.4 mph
11.2 mph
24.7°F
19.9°F
0 in
100%
9 mi
1020 mbar
0

Five Day Weather Forecast

Cloudy
Sat
H: 37°F
L: 28°F
Moderate or heavy snow showers
Sun
H: 37°F
L: 30°F
Blizzard
Mon
H: 30°F
L: 19°F
Light freezing rain
Tue
H: 24°F
L: 9°F
Sunny
Wed
H: 10°F
L: -3°F

Air Quality

PM2.5: 11.75 μg/m3
PM10: 12.55 μg/m3
Carbon Monoxide: 238.85 μg/m3
Nitrogen Dioxide: 27.25 μg/m3
Sulphur Dioxide: 8.05 μg/m3
Ozone: 38 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 11:55 AM
Sunset: 4:40 PM
Daylight: 9 hrs 30 mins
Moonrise: 6:45 AM
Moon Transit: 11:01 AM
Moonset: 3:21 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:40 AM - 3:10 AM
10:31 AM - 1:01 PM

Minor Periods

2:51 PM - 4:21 PM
6:15 AM - 7:45 AM

Action Rating: 4 out of 5

Winter Weather Advisory issued January 16 at 1:48PM EST until January 17 at 5:00PM EST by NWS Boston/Norton MA

Effective: Fri January 16, 2026, 1:48 PM
Expires: Sat January 17, 2026, 4:00 AM

* WHAT...Snow expected. Total snow accumulations between 2 and 4 inches, but locally up to 6 inches in the Berkshires. * WHERE...Portions of central and western Massachusetts. * WHEN...From 1 AM to 5 PM EST Saturday. * IMPACTS...Plan on slippery road conditions.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 17 at 12:31AM EST until January 17 at 5:00PM EST by NWS Boston/Norton MA

Effective: Sat January 17, 2026, 12:31 AM
Expires: Sat January 17, 2026, 5:00 PM

* WHAT...Snow expected. Total snow accumulations 1 to 4 inches with localized 5-6 inch amounts possible in the very highest terrain of the Berkshires. * WHERE...Portions of central and western Massachusetts. * WHEN...Until 5 PM EST this afternoon. * IMPACTS...Travel could be very difficult.

Slow down and use caution while traveling.


Winter Weather Advisory issued January 16 at 11:32PM EST until January 17 at 5:00PM EST by NWS Gray ME

Effective: Fri January 16, 2026, 11:32 PM
Expires: Sat January 17, 2026, 11:45 AM

* WHAT...Snow expected. Total snow accumulations around 3 to 5 inches with higher amounts in the higher terrain. * WHERE...Portions of central and northern New Hampshire. * WHEN...From 3 AM to 5 PM EST Saturday. * IMPACTS...A weak weather system will bring a period of light snowfall to the region. Although snowfall amounts will be light, travel will still be impacted due to snowfall accumulations on untreated roads.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org
Saturday, January 17, 2026

Weather Forecast

Cloudy
37.4°F
28°F
32.9°F
71%
0 in
0%
0%
11 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 9.67 μg/m3
PM10: 10.79 μg/m3
Carbon Monoxide: 227.42 μg/m3
Nitrogen Dioxide: 25.27 μg/m3
Sulphur Dioxide: 6.47 μg/m3
Ozone: 41.76 μg/m3

Astronomical

Sunrise: 7:11 AM
Sun Transit: 11:55 AM
Sunset: 4:40 PM
Daylight: 9 hrs 30 mins
Moonrise: 6:45 AM
Moon Transit: 11:01 AM
Moonset: 3:21 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

12:40 AM - 3:10 AM
10:31 AM - 1:01 PM

Minor Periods

2:51 PM - 4:21 PM
6:15 AM - 7:45 AM

Action Rating: 4 out of 5

Sunday, January 18, 2026

Weather Forecast

Moderate or heavy snow showers
36.7°F
30.4°F
32.7°F
86%
0.26 in
77%
16%
10.5 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 18.37 μg/m3
PM10: 21.16 μg/m3
Carbon Monoxide: 313.52 μg/m3
Nitrogen Dioxide: 41.49 μg/m3
Sulphur Dioxide: 6.9 μg/m3
Ozone: 15.85 μg/m3

Astronomical

Sunrise: 7:10 AM
Sun Transit: 11:55 AM
Sunset: 4:42 PM
Daylight: 9 hrs 32 mins
Moonrise: 7:24 AM
Moon Transit: 11:52 AM
Moonset: 4:28 PM
Moon Phase: New
Moon Illumination: 2.5%

Best Times for Fishing or Hunting

Major Periods

1:32 AM - 4:02 AM
11:22 AM - 1:52 PM

Minor Periods

3:58 PM - 5:28 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Monday, January 19, 2026

Weather Forecast

Blizzard
29.7°F
19.3°F
25.9°F
91%
1.59 in
66%
44%
19.5 mph
0


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 11:55 AM
Sunset: 4:43 PM
Daylight: 9 hrs 33 mins
Moonrise: 7:55 AM
Moon Transit: 12:41 AM
Moonset: 5:36 PM
Moon Phase: New
Moon Illumination: 0.4%

Best Times for Fishing or Hunting

Major Periods

2:22 AM - 4:52 AM
12:11 AM - 2:41 PM

Minor Periods

5:06 PM - 6:36 PM
7:25 AM - 8:55 AM

Action Rating: 5 out of 5

Tuesday, January 20, 2026

Weather Forecast

Light freezing rain
24.1°F
9.2°F
17.2°F
86%
0.01 in
79%
29%
9.2 mph
1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:09 AM
Sun Transit: 11:56 AM
Sunset: 4:44 PM
Daylight: 9 hrs 35 mins
Moonrise: 8:22 AM
Moon Transit: 1:29 PM
Moonset: 6:46 PM
Moon Phase: New
Moon Illumination: 3.1%

Best Times for Fishing or Hunting

Major Periods

3:10 AM - 5:40 AM
12:59 AM - 3:29 PM

Minor Periods

6:16 PM - 7:46 PM
7:52 AM - 9:22 AM

Action Rating: 3 out of 5

Wednesday, January 21, 2026

Weather Forecast

Sunny
10.4°F
-3.3°F
4.7°F
81%
0 in
0%
0%
13.6 mph
2


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 7:08 AM
Sun Transit: 11:56 AM
Sunset: 4:45 PM
Daylight: 9 hrs 37 mins
Moonrise: 8:45 AM
Moon Transit: 2:14 PM
Moonset: 7:55 PM
Moon Phase: Waxing Crescent
Moon Illumination: 8.1%

Best Times for Fishing or Hunting

Major Periods

3:56 AM - 6:26 AM
1:44 PM - 4:14 PM

Minor Periods

7:25 PM - 8:55 PM
8:15 AM - 9:45 AM

Action Rating: 2 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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