Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

72.0°F

Measurement Time: Saturday, June 20, 2026, 12:40 PM EDT

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

78.1°F
Partly cloudy
Partly cloudy
78.4°F
79.2°F
42%
NW 11.6 mph
15.7 mph
79°F
53.9°F
0 in
50%
9 mi
1004 mbar
1.3

Five Day Weather Forecast

Moderate rain
Sat
H: 80°F
L: 62°F
Patchy rain nearby
Sun
H: 82°F
L: 55°F
Heavy rain
Mon
H: 77°F
L: 58°F
Patchy rain nearby
Tue
H: 70°F
L: 59°F
Sunny
Wed
H: 79°F
L: 55°F

Air Quality

AQI: 1 - Good
PM2.5: 1.9 μg/m3
PM10: 1.9 μg/m3
Carbon Monoxide: 125 μg/m3
Nitrogen Dioxide: 1.8 μg/m3
Sulphur Dioxide: 0.3 μg/m3
Ozone: 84 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 11:30 AM
Moon Transit: 6:00 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

7:42 AM - 10:12 AM
5:30 PM - 8:00 PM

Minor Periods

11:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Small Craft Advisory issued June 20 at 3:56AM EDT until June 20 at 7:00PM EDT by NWS Boston/Norton MA

Effective: Sat June 20, 2026, 3:56 AM
Expires: Sat June 20, 2026, 5:00 PM

* WHAT...West winds 15 to 20 kt with gusts up to 25 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 7 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.


Small Craft Advisory issued June 20 at 2:15PM EDT until June 20 at 7:00PM EDT by NWS Boston/Norton MA

Effective: Sat June 20, 2026, 2:15 PM
Expires: Sat June 20, 2026, 7:00 PM

* WHAT...Northwest winds around 15 kt with gusts up to 25 kt and waves around 2 feet. * WHERE...Boston Harbor. * WHEN...Until 7 PM EDT this evening. * IMPACTS...Conditions will be hazardous to small craft.

Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.
Saturday, June 20, 2026

Weather Forecast

Moderate rain
80.1°F
62.1°F
70.6°F
53%
0.29 in
57%
0%
15 mph
7.3


Air Quality

AQI: 1 - Good
PM2.5: 3.32 μg/m3
PM10: 3.39 μg/m3
Carbon Monoxide: 121.13 μg/m3
Nitrogen Dioxide: 3.71 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 74.17 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 11:30 AM
Moon Transit: 6:00 PM
Moonset: 12:58 AM
Moon Phase: Waxing Crescent
Moon Illumination: 27.8%

Best Times for Fishing or Hunting

Major Periods

7:42 AM - 10:12 AM
5:30 PM - 8:00 PM

Minor Periods

11:00 AM - 12:30 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, June 21, 2026

Weather Forecast

Patchy rain nearby
82.2°F
54.5°F
68.4°F
60%
0.01 in
36%
0%
8.9 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 5.21 μg/m3
PM10: 5.31 μg/m3
Carbon Monoxide: 159.71 μg/m3
Nitrogen Dioxide: 7.93 μg/m3
Sulphur Dioxide: 0.52 μg/m3
Ozone: 69.75 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 12:39 AM
Moon Transit: 6:44 PM
Moonset: 12:19 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

8:26 AM - 10:56 AM
6:14 PM - 8:44 PM

Minor Periods

12:09 AM - 1:39 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, June 22, 2026

Weather Forecast

Heavy rain
76.5°F
57.7°F
62.6°F
82%
0.79 in
81%
0%
8.3 mph
5.2


Air Quality

AQI: 1 - Good
PM2.5: 11.21 μg/m3
PM10: 11.87 μg/m3
Carbon Monoxide: 218.79 μg/m3
Nitrogen Dioxide: 20.73 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 64.17 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:47 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 1:44 PM
Moon Transit: 7:26 PM
Moonset: 12:39 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

9:09 AM - 11:39 AM
6:56 PM - 9:26 PM

Minor Periods

1:14 PM - 2:44 PM
12:09 AM - 1:39 AM

Action Rating: 2 out of 5

Tuesday, June 23, 2026

Weather Forecast

Patchy rain nearby
69.9°F
59.2°F
62.8°F
92%
0.07 in
75%
0%
5.4 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 3.65 μg/m3
PM10: 3.84 μg/m3
Carbon Monoxide: 153.3 μg/m3
Nitrogen Dioxide: 7 μg/m3
Sulphur Dioxide: 0.5 μg/m3
Ozone: 86.29 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 12:47 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 2:49 PM
Moon Transit: 8:09 PM
Moonset: 12:58 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

9:51 AM - 12:21 AM
7:39 PM - 10:09 PM

Minor Periods

2:19 PM - 3:49 PM
12:28 AM - 1:58 AM

Action Rating: 2 out of 5

Wednesday, June 24, 2026

Weather Forecast

Sunny
79.1°F
55.1°F
67°F
67%
0 in
6%
0%
7.8 mph
8.4


Air Quality

AQI: 1 - Good
PM2.5: 6.51 μg/m3
PM10: 6.58 μg/m3
Carbon Monoxide: 185.56 μg/m3
Nitrogen Dioxide: 10.66 μg/m3
Sulphur Dioxide: 1.36 μg/m3
Ozone: 59.56 μg/m3

Astronomical

Sunrise: 5:09 AM
Sun Transit: 12:47 AM
Sunset: 8:26 PM
Daylight: 15 hrs 18 mins
Moonrise: 3:54 PM
Moon Transit: 8:52 PM
Moonset: 1:20 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

10:35 AM - 1:05 PM
8:22 PM - 10:52 PM

Minor Periods

3:24 PM - 4:54 PM
12:50 AM - 2:20 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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