Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

50.0°F

Measurement Time: Thursday, April 9, 2026, 8:50 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

48.9°F
Sunny
Sunny
44.5°F
57.8°F
23%
S 10.5 mph
12.1 mph
57°F
28.6°F
0 in
0%
9 mi
1036 mbar
5.6

Five Day Weather Forecast

Sunny
Thu
H: 61°F
L: 27°F
Overcast
Fri
H: 62°F
L: 33°F
Sunny
Sat
H: 58°F
L: 43°F
Patchy rain nearby
Sun
H: 57°F
L: 38°F
Patchy rain nearby
Mon
H: 66°F
L: 45°F

Air Quality

AQI: 1 - Good
PM2.5: 6.05 μg/m3
PM10: 7.85 μg/m3
Carbon Monoxide: 170.85 μg/m3
Nitrogen Dioxide: 7.85 μg/m3
Sulphur Dioxide: 4.35 μg/m3
Ozone: 104 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:46 AM
Sunset: 7:20 PM
Daylight: 13 hrs 6 mins
Moonrise: 2:11 AM
Moon Transit: 6:24 AM
Moonset: 10:42 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

5:54 AM - 8:24 AM
8:54 PM - 11:24 PM

Minor Periods

10:12 AM - 11:42 AM
1:41 AM - 3:11 AM

Action Rating: 3 out of 5

Special Weather Statement issued April 9 at 2:36AM EDT by NWS Boston/Norton MA

Effective: Thu April 9, 2026, 2:36 AM
Expires: Thu April 9, 2026, 5:00 PM

Southerly wind gusts of 20 to 25 mph are expected to develop this afternoon. Still dry, with minimum relative humidity values between 15 to 25 percent. When combined with the lack of recent significant rainfall and exposed fine fuels and leaf litter, elevated fire weather potential will exist today.


Thursday, April 9, 2026

Weather Forecast

Sunny
60.6°F
26.8°F
41.9°F
57%
0 in
0%
0%
12.5 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 10.33 μg/m3
PM10: 12.41 μg/m3
Carbon Monoxide: 234.17 μg/m3
Nitrogen Dioxide: 18.78 μg/m3
Sulphur Dioxide: 4.27 μg/m3
Ozone: 73.96 μg/m3

Astronomical

Sunrise: 6:14 AM
Sun Transit: 12:46 AM
Sunset: 7:20 PM
Daylight: 13 hrs 6 mins
Moonrise: 2:11 AM
Moon Transit: 6:24 AM
Moonset: 10:42 AM
Moon Phase: Last Quarter
Moon Illumination: 41.9%

Best Times for Fishing or Hunting

Major Periods

5:54 AM - 8:24 AM
8:54 PM - 11:24 PM

Minor Periods

10:12 AM - 11:42 AM
1:41 AM - 3:11 AM

Action Rating: 3 out of 5

Friday, April 10, 2026

Weather Forecast

Overcast
62.4°F
33.4°F
43.8°F
83%
0 in
0%
0%
12.5 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 10.38 μg/m3
PM10: 12.94 μg/m3
Carbon Monoxide: 200.65 μg/m3
Nitrogen Dioxide: 14.79 μg/m3
Sulphur Dioxide: 5.15 μg/m3
Ozone: 79.8 μg/m3

Astronomical

Sunrise: 6:12 AM
Sun Transit: 12:46 AM
Sunset: 7:21 PM
Daylight: 13 hrs 9 mins
Moonrise: 2:50 AM
Moon Transit: 7:14 AM
Moonset: 11:45 AM
Moon Phase: Last Quarter
Moon Illumination: 31.0%

Best Times for Fishing or Hunting

Major Periods

6:44 AM - 9:14 AM
12:00 AM - 12:00 AM

Minor Periods

11:15 AM - 12:45 AM
2:20 AM - 3:50 AM

Action Rating: 2 out of 5

Saturday, April 11, 2026

Weather Forecast

Sunny
57.9°F
43°F
49.1°F
63%
0 in
0%
0%
13.6 mph
1.4


Air Quality

AQI: 1 - Good
PM2.5: 7.09 μg/m3
PM10: 7.41 μg/m3
Carbon Monoxide: 205.65 μg/m3
Nitrogen Dioxide: 11.69 μg/m3
Sulphur Dioxide: 4.31 μg/m3
Ozone: 80.92 μg/m3

Astronomical

Sunrise: 6:11 AM
Sun Transit: 12:46 AM
Sunset: 7:22 PM
Daylight: 13 hrs 11 mins
Moonrise: 3:22 AM
Moon Transit: 8:03 AM
Moonset: 12:52 AM
Moon Phase: Last Quarter
Moon Illumination: 21.1%

Best Times for Fishing or Hunting

Major Periods

7:33 AM - 10:03 AM
12:00 AM - 12:00 AM

Minor Periods

12:22 AM - 1:52 PM
2:52 AM - 4:22 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Patchy rain nearby
56.5°F
38.3°F
46.7°F
49%
0 in
68%
0%
9.6 mph
1.5


Air Quality

AQI: 1 - Good
PM2.5: 7 μg/m3
PM10: 7.57 μg/m3
Carbon Monoxide: 200.52 μg/m3
Nitrogen Dioxide: 15.47 μg/m3
Sulphur Dioxide: 3.45 μg/m3
Ozone: 80.64 μg/m3

Astronomical

Sunrise: 6:09 AM
Sun Transit: 12:45 AM
Sunset: 7:23 PM
Daylight: 13 hrs 14 mins
Moonrise: 3:50 AM
Moon Transit: 8:50 AM
Moonset: 2:01 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:20 AM - 10:50 AM
12:00 AM - 12:00 AM

Minor Periods

1:31 PM - 3:01 PM
3:20 AM - 4:50 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Patchy rain nearby
65.9°F
44.5°F
55.2°F
77%
0.09 in
87%
0%
14.5 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 7.38 μg/m3
PM10: 8.21 μg/m3
Carbon Monoxide: 191.33 μg/m3
Nitrogen Dioxide: 12.1 μg/m3
Sulphur Dioxide: 3.05 μg/m3
Ozone: 89.15 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 12:45 AM
Sunset: 7:24 PM
Daylight: 13 hrs 17 mins
Moonrise: 4:14 AM
Moon Transit: 9:36 AM
Moonset: 3:10 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
9:06 AM - 11:36 AM

Minor Periods

2:40 PM - 4:10 PM
3:44 AM - 5:14 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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