Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

56.8°F

Measurement Time: Thursday, April 16, 2026, 10:30 AM 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

69.1°F
Cloudy
Cloudy
69.1°F
63.9°F
70%
E 4.3 mph
4.9 mph
63.9°F
63.1°F
0 in
0%
9 mi
1010 mbar
4.9

Five Day Weather Forecast

Moderate rain
Thu
H: 66°F
L: 49°F
Overcast
Fri
H: 68°F
L: 50°F
Patchy rain nearby
Sat
H: 52°F
L: 44°F
Heavy rain
Sun
H: 50°F
L: 41°F
Patchy rain nearby
Mon
H: 47°F
L: 35°F

Air Quality

AQI: 1 - Good
PM2.5: 20.65 μg/m3
PM10: 21.35 μg/m3
Carbon Monoxide: 374.85 μg/m3
Nitrogen Dioxide: 35.25 μg/m3
Sulphur Dioxide: 5.95 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:44 AM
Sunset: 7:28 PM
Daylight: 13 hrs 25 mins
Moonrise: 5:19 AM
Moon Transit: 12:00 AM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:37 AM - 4:07 AM

Minor Periods

6:21 PM - 7:51 PM
4:49 AM - 6:19 AM

Action Rating: 5 out of 5

Thursday, April 16, 2026

Weather Forecast

Moderate rain
66.2°F
48.9°F
54.5°F
97%
0.27 in
87%
0%
8.3 mph
1.2


Air Quality

AQI: 2 - Moderate
PM2.5: 19.35 μg/m3
PM10: 19.9 μg/m3
Carbon Monoxide: 283.13 μg/m3
Nitrogen Dioxide: 37.21 μg/m3
Sulphur Dioxide: 5.79 μg/m3
Ozone: 56.28 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 12:44 AM
Sunset: 7:28 PM
Daylight: 13 hrs 25 mins
Moonrise: 5:19 AM
Moon Transit: 12:00 AM
Moonset: 6:51 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
1:37 AM - 4:07 AM

Minor Periods

6:21 PM - 7:51 PM
4:49 AM - 6:19 AM

Action Rating: 5 out of 5

Friday, April 17, 2026

Weather Forecast

Overcast
67.8°F
50.1°F
59.9°F
81%
0 in
0%
0%
10.3 mph
0.9


Air Quality

AQI: 2 - Moderate
PM2.5: 15.92 μg/m3
PM10: 16.23 μg/m3
Carbon Monoxide: 280.85 μg/m3
Nitrogen Dioxide: 34.72 μg/m3
Sulphur Dioxide: 5.43 μg/m3
Ozone: 61.24 μg/m3

Astronomical

Sunrise: 6:01 AM
Sun Transit: 12:44 AM
Sunset: 7:29 PM
Daylight: 13 hrs 28 mins
Moonrise: 5:44 AM
Moon Transit: 12:49 AM
Moonset: 8:11 PM
Moon Phase: New
Moon Illumination: 4.1%

Best Times for Fishing or Hunting

Major Periods

2:28 AM - 4:58 AM
12:19 AM - 2:49 PM

Minor Periods

7:41 PM - 9:11 PM
5:14 AM - 6:44 AM

Action Rating: 4 out of 5

Saturday, April 18, 2026

Weather Forecast

Patchy rain nearby
51.7°F
43.5°F
49°F
92%
0.15 in
89%
0%
10.1 mph
1.7


Air Quality

AQI: 1 - Good
PM2.5: 10.91 μg/m3
PM10: 12.24 μg/m3
Carbon Monoxide: 210.09 μg/m3
Nitrogen Dioxide: 18.93 μg/m3
Sulphur Dioxide: 3.53 μg/m3
Ozone: 62.44 μg/m3

Astronomical

Sunrise: 5:59 AM
Sun Transit: 12:44 AM
Sunset: 7:30 PM
Daylight: 13 hrs 31 mins
Moonrise: 6:14 AM
Moon Transit: 1:45 PM
Moonset: 9:33 PM
Moon Phase: New
Moon Illumination: 1.2%

Best Times for Fishing or Hunting

Major Periods

3:22 AM - 5:52 AM
1:15 PM - 3:45 PM

Minor Periods

9:03 PM - 10:33 PM
5:44 AM - 7:14 AM

Action Rating: 5 out of 5

Sunday, April 19, 2026

Weather Forecast

Heavy rain
49.6°F
41.4°F
44.9°F
92%
1.46 in
86%
0%
12.1 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 9.45 μg/m3
PM10: 10.41 μg/m3
Carbon Monoxide: 207.42 μg/m3
Nitrogen Dioxide: 16.45 μg/m3
Sulphur Dioxide: 3.27 μg/m3
Ozone: 70.6 μg/m3

Astronomical

Sunrise: 5:58 AM
Sun Transit: 12:44 AM
Sunset: 7:31 PM
Daylight: 13 hrs 34 mins
Moonrise: 6:51 AM
Moon Transit: 2:46 PM
Moonset: 10:54 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.9%

Best Times for Fishing or Hunting

Major Periods

4:21 AM - 6:51 AM
2:16 PM - 4:46 PM

Minor Periods

10:24 PM - 11:54 PM
6:21 AM - 7:51 AM

Action Rating: 3 out of 5

Monday, April 20, 2026

Weather Forecast

Patchy rain nearby
46.6°F
34.5°F
40.3°F
56%
0.01 in
86%
0%
12.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 3.89 μg/m3
PM10: 4.03 μg/m3
Carbon Monoxide: 192.02 μg/m3
Nitrogen Dioxide: 10.07 μg/m3
Sulphur Dioxide: 2.64 μg/m3
Ozone: 74.54 μg/m3

Astronomical

Sunrise: 5:56 AM
Sun Transit: 12:43 AM
Sunset: 7:32 PM
Daylight: 13 hrs 36 mins
Moonrise: 7:38 AM
Moon Transit: 3:50 PM
Moonset: 12:08 PM
Moon Phase: Waxing Crescent
Moon Illumination: 10.8%

Best Times for Fishing or Hunting

Major Periods

5:25 AM - 7:55 AM
3:20 PM - 5:50 PM

Minor Periods

12:00 AM - 12:00 AM
7:08 AM - 8:38 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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