Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

64.4°F

Measurement Time: Sunday, May 24, 2026, 5:50 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

54°F
Light rain
Light rain
51.5°F
51.3°F
80%
ESE 8.1 mph
11.5 mph
48.1°F
48.4°F
0.06 in
100%
9 mi
1032 mbar
0.5

Five Day Weather Forecast

Moderate rain
Sun
H: 52°F
L: 48°F
Patchy rain nearby
Mon
H: 60°F
L: 51°F
Partly Cloudy
Tue
H: 79°F
L: 50°F
Partly Cloudy
Wed
H: 80°F
L: 59°F
Patchy rain nearby
Thu
H: 75°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 12.25 μg/m3
PM10: 17.25 μg/m3
Carbon Monoxide: 130.85 μg/m3
Nitrogen Dioxide: 8.35 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 71 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:42 AM
Sunset: 8:09 PM
Daylight: 14 hrs 54 mins
Moonrise: 1:42 PM
Moon Transit: 8:04 PM
Moonset: 1:54 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

9:47 AM - 12:17 AM
7:34 PM - 10:04 PM

Minor Periods

1:12 PM - 2:42 PM
1:24 AM - 2:54 AM

Action Rating: 2 out of 5

Special Weather Statement issued May 24 at 2:21AM EDT by NWS Gray ME

Effective: Sun May 24, 2026, 2:21 AM
Expires: Sun May 24, 2026, 12:00 PM

* The warm air temperatures later this Holiday weekend in the mid 60s may cause people to underestimate the dangers of the cold water temperatures which are currently only in the mid 50s across Sebago Lake and Lake Winnipesaukee, and in the mid 50s in the regions smaller lakes and rivers. * The cold water temperatures can quickly cause hypothermia to anyone immersed in the water. When the water temperature is below 60 degrees, the average submerged person could loose dexterity within minutes and be unable to accomplish simple tasks. Anyone on small boats, canoes, or kayaks should plan accordingly if recreating this weekend and use extreme caution to avoid this threat. Paddle smart from the start and always wear your life jacket! * Winds will be breezy this afternoon with some gusts up to 25 mph across parts of the area. If boating on large bodies of water, these strong winds can increase the likelihood of overturning your boat, canoe, or kayak due to increased wave heights.


Sunday, May 24, 2026

Weather Forecast

Moderate rain
52°F
48.4°F
50.8°F
87%
0.52 in
92%
0%
10.1 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 11.52 μg/m3
PM10: 15.76 μg/m3
Carbon Monoxide: 137.41 μg/m3
Nitrogen Dioxide: 11.45 μg/m3
Sulphur Dioxide: 1.8 μg/m3
Ozone: 63 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:42 AM
Sunset: 8:09 PM
Daylight: 14 hrs 54 mins
Moonrise: 1:42 PM
Moon Transit: 8:04 PM
Moonset: 1:54 AM
Moon Phase: First Quarter
Moon Illumination: 55.7%

Best Times for Fishing or Hunting

Major Periods

9:47 AM - 12:17 AM
7:34 PM - 10:04 PM

Minor Periods

1:12 PM - 2:42 PM
1:24 AM - 2:54 AM

Action Rating: 2 out of 5

Monday, May 25, 2026

Weather Forecast

Patchy rain nearby
60.3°F
50.5°F
53.5°F
96%
0.2 in
88%
0%
8.5 mph
4.8


Air Quality

AQI: 1 - Good
PM2.5: 6.24 μg/m3
PM10: 7.06 μg/m3
Carbon Monoxide: 151.01 μg/m3
Nitrogen Dioxide: 15.96 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 55.36 μg/m3

Astronomical

Sunrise: 5:15 AM
Sun Transit: 12:42 AM
Sunset: 8:10 PM
Daylight: 14 hrs 55 mins
Moonrise: 2:48 PM
Moon Transit: 8:46 PM
Moonset: 2:14 AM
Moon Phase: First Quarter
Moon Illumination: 66.7%

Best Times for Fishing or Hunting

Major Periods

10:30 AM - 1:00 PM
8:16 PM - 10:46 PM

Minor Periods

2:18 PM - 3:48 PM
1:44 AM - 3:14 AM

Action Rating: 3 out of 5

Tuesday, May 26, 2026

Weather Forecast

Partly Cloudy
79.4°F
50.2°F
63.9°F
72%
0 in
0%
0%
8.5 mph
4.8


Air Quality

AQI: 1 - Good
PM2.5: 11 μg/m3
PM10: 11.36 μg/m3
Carbon Monoxide: 226.57 μg/m3
Nitrogen Dioxide: 27.63 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 52.44 μg/m3

Astronomical

Sunrise: 5:14 AM
Sun Transit: 12:42 AM
Sunset: 8:11 PM
Daylight: 14 hrs 57 mins
Moonrise: 3:52 PM
Moon Transit: 9:27 PM
Moonset: 2:34 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.9%

Best Times for Fishing or Hunting

Major Periods

11:11 AM - 1:41 PM
8:57 PM - 11:27 PM

Minor Periods

3:22 PM - 4:52 PM
2:04 AM - 3:34 AM

Action Rating: 2 out of 5

Wednesday, May 27, 2026

Weather Forecast

Partly Cloudy
79.6°F
58.9°F
67.9°F
69%
0 in
0%
0%
8.9 mph
7.6


Air Quality

AQI: 1 - Good
PM2.5: 9.37 μg/m3
PM10: 9.96 μg/m3
Carbon Monoxide: 189.71 μg/m3
Nitrogen Dioxide: 12.53 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 83.68 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:42 AM
Sunset: 8:12 PM
Daylight: 14 hrs 58 mins
Moonrise: 4:57 PM
Moon Transit: 10:10 PM
Moonset: 2:54 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.7%

Best Times for Fishing or Hunting

Major Periods

11:53 AM - 2:23 PM
12:00 AM - 12:00 AM

Minor Periods

4:27 PM - 5:57 PM
2:24 AM - 3:54 AM

Action Rating: 2 out of 5

Thursday, May 28, 2026

Weather Forecast

Patchy rain nearby
74.6°F
51.7°F
60.7°F
73%
0.04 in
77%
0%
8.9 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 7.16 μg/m3
PM10: 7.36 μg/m3
Carbon Monoxide: 184.83 μg/m3
Nitrogen Dioxide: 12.28 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 62 μg/m3

Astronomical

Sunrise: 5:13 AM
Sun Transit: 12:42 AM
Sunset: 8:13 PM
Daylight: 15 hrs mins
Moonrise: 6:02 PM
Moon Transit: 10:55 PM
Moonset: 3:15 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 92.7%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 PM
12:00 AM - 12:00 AM

Minor Periods

5:32 PM - 7:02 PM
2:45 AM - 4:15 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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