Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

46.8°F

Measurement Time: Wednesday, March 11, 2026, 11:30 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

59.7°F
Light rain
Light rain
59.7°F
57.3°F
93%
SSW 12.8 mph
21.4 mph
55.7°F
55.8°F
0 in
100%
9 mi
1000 mbar
0

Five Day Weather Forecast

Moderate rain
Thu
H: 58°F
L: 32°F
Patchy rain nearby
Fri
H: 42°F
L: 29°F
Cloudy
Sat
H: 47°F
L: 31°F
Patchy rain nearby
Sun
H: 40°F
L: 27°F
Heavy rain
Mon
H: 57°F
L: 32°F

Air Quality

AQI: 1 - Good
PM2.5: 8.45 μg/m3
PM10: 9.55 μg/m3
Carbon Monoxide: 167.85 μg/m3
Nitrogen Dioxide: 13.25 μg/m3
Sulphur Dioxide: 4.75 μg/m3
Ozone: 64 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:54 AM
Sunset: 6:48 PM
Daylight: 11 hrs 46 mins
Moonrise: 3:32 AM
Moon Transit: 7:41 AM
Moonset: 11:53 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:11 AM - 9:41 AM
12:00 AM - 12:00 AM

Minor Periods

11:23 AM - 12:53 AM
3:02 AM - 4:32 AM

Action Rating: 3 out of 5

Flood Warning issued March 11 at 11:24PM EDT by NWS Boston/Norton MA

Effective: Wed March 11, 2026, 11:24 PM
Expires: Thu March 12, 2026, 2:00 PM

...The Flood Warning is extended for the following rivers in Massachusetts... Taunton River Near Bridgewater affecting Bristol and Plymouth Counties. For the Taunton River...including Bridgewater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Taunton River near Bridgewater. * WHEN...Until further notice. * IMPACTS...At 8.0 feet, Backwater flooding from the Taunton River will cause flooding of lower Purchade Brook in Middleboro. This will cause Woloski Park to become impassable by most vehicles. Beware of the dangers of crossing flooded roadways. * ADDITIONAL DETAILS... - At 10:45 PM EDT Wednesday the stage was 8.1 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:45 PM EDT Wednesday was 8.1 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling to 6.9 feet Saturday evening. - Flood stage is 8.0 feet. - http://www.weather.gov/safety/flood

Caution is urged when walking near riverbanks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued Thursday afternoon at 200 PM EDT.
Thursday, March 12, 2026

Weather Forecast

Moderate rain
57.7°F
32.4°F
46.8°F
80%
0.22 in
88%
0%
13.4 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 7.16 μg/m3
PM10: 8.08 μg/m3
Carbon Monoxide: 192.17 μg/m3
Nitrogen Dioxide: 12.19 μg/m3
Sulphur Dioxide: 3.26 μg/m3
Ozone: 75.72 μg/m3

Astronomical

Sunrise: 7:02 AM
Sun Transit: 12:54 AM
Sunset: 6:48 PM
Daylight: 11 hrs 46 mins
Moonrise: 3:32 AM
Moon Transit: 7:41 AM
Moonset: 11:53 AM
Moon Phase: Last Quarter
Moon Illumination: 25.6%

Best Times for Fishing or Hunting

Major Periods

7:11 AM - 9:41 AM
12:00 AM - 12:00 AM

Minor Periods

11:23 AM - 12:53 AM
3:02 AM - 4:32 AM

Action Rating: 3 out of 5

Friday, March 13, 2026

Weather Forecast

Patchy rain nearby
42.3°F
28.8°F
34.3°F
69%
0.01 in
89%
0%
15.4 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 4.48 μg/m3
PM10: 5.21 μg/m3
Carbon Monoxide: 194.53 μg/m3
Nitrogen Dioxide: 11.77 μg/m3
Sulphur Dioxide: 2.79 μg/m3
Ozone: 80.64 μg/m3

Astronomical

Sunrise: 7:00 AM
Sun Transit: 12:54 AM
Sunset: 6:50 PM
Daylight: 11 hrs 49 mins
Moonrise: 4:17 AM
Moon Transit: 8:33 AM
Moonset: 12:55 AM
Moon Phase: Waning Crescent
Moon Illumination: 16.4%

Best Times for Fishing or Hunting

Major Periods

8:03 AM - 10:33 AM
12:00 AM - 12:00 AM

Minor Periods

12:25 AM - 1:55 PM
3:47 AM - 5:17 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Cloudy
47.1°F
31°F
38.9°F
66%
0 in
0%
0%
18.1 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 6.03 μg/m3
PM10: 7.73 μg/m3
Carbon Monoxide: 186.69 μg/m3
Nitrogen Dioxide: 8.05 μg/m3
Sulphur Dioxide: 3.07 μg/m3
Ozone: 86.4 μg/m3

Astronomical

Sunrise: 6:59 AM
Sun Transit: 12:54 AM
Sunset: 6:51 PM
Daylight: 11 hrs 52 mins
Moonrise: 4:53 AM
Moon Transit: 9:24 AM
Moonset: 2:02 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

8:54 AM - 11:24 AM
12:00 AM - 12:00 AM

Minor Periods

1:32 PM - 3:02 PM
4:23 AM - 5:53 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Patchy rain nearby
40.3°F
27.3°F
34°F
57%
0.02 in
86%
3%
11.2 mph
1


Air Quality

AQI: 1 - Good
PM2.5: 7.78 μg/m3
PM10: 9.09 μg/m3
Carbon Monoxide: 207.31 μg/m3
Nitrogen Dioxide: 20.39 μg/m3
Sulphur Dioxide: 4.13 μg/m3
Ozone: 69.32 μg/m3

Astronomical

Sunrise: 6:57 AM
Sun Transit: 12:53 AM
Sunset: 6:52 PM
Daylight: 11 hrs 55 mins
Moonrise: 5:24 AM
Moon Transit: 10:13 AM
Moonset: 3:11 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:43 AM - 12:13 AM

Minor Periods

2:41 PM - 4:11 PM
4:54 AM - 6:24 AM

Action Rating: 2 out of 5

Monday, March 16, 2026

Weather Forecast

Heavy rain
56.8°F
31.6°F
47.3°F
89%
1.38 in
82%
0%
20.1 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 9.16 μg/m3
PM10: 12.34 μg/m3
Carbon Monoxide: 191.23 μg/m3
Nitrogen Dioxide: 11.12 μg/m3
Sulphur Dioxide: 2.57 μg/m3
Ozone: 86.69 μg/m3

Astronomical

Sunrise: 6:55 AM
Sun Transit: 12:53 AM
Sunset: 6:53 PM
Daylight: 11 hrs 58 mins
Moonrise: 5:50 AM
Moon Transit: 11:00 AM
Moonset: 4:22 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:41 AM - 3:11 AM
10:30 AM - 1:00 PM

Minor Periods

3:52 PM - 5:22 PM
5:20 AM - 6:50 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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