Water Temperature of Stony Brook in Waltham, MA

Current Water Temperature

70.9°F

Measurement Time: Sunday, June 14, 2026, 11:30 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

86.7°F
Sunny
Sunny
82.7°F
96°F
42%
SW 14.3 mph
16.5 mph
97.8°F
48°F
0 in
0%
9 mi
1008 mbar
5.9

Five Day Weather Forecast

Sunny
Sun
H: 100°F
L: 63°F
Patchy rain nearby
Mon
H: 84°F
L: 63°F
Sunny
Tue
H: 80°F
L: 54°F
Partly Cloudy
Wed
H: 80°F
L: 56°F
Moderate rain
Thu
H: 85°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 8.1 μg/m3
PM10: 9 μg/m3
Carbon Monoxide: 126 μg/m3
Nitrogen Dioxide: 2 μg/m3
Sulphur Dioxide: 1 μg/m3
Ozone: 138 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:24 PM
Daylight: 15 hrs 16 mins
Moonrise: 4:03 AM
Moon Transit: 12:15 AM
Moonset: 8:33 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:45 AM - 2:15 PM

Minor Periods

8:03 PM - 9:33 PM
3:33 AM - 5:03 AM

Action Rating: 5 out of 5

Coastal Flood Statement issued June 14 at 3:36AM EDT until June 16 at 4:00AM EDT by NWS Boston/Norton MA

Effective: Sun June 14, 2026, 3:36 AM
Expires: Sun June 14, 2026, 6:00 PM

* WHAT...Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (2.9 to 13.0 feet Mean Lower Low Water) around the evening high tides. * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA and Dukes MA Counties. * WHEN...Through late Monday night. The evening high tide periods tonight and Monday night are of the greatest concern. * IMPACTS...Shallow pockets of flooding less than one foot deep affects the lowest lying areas along the coast, including Morrissey Boulevard in Boston. Roads remain passable. Shallow pockets of flooding less than one foot deep affect more vulnerable coastal roads along the North Shore from Salem and Gloucester to Newburyport. Rough surf will likely cause some splashover onto coastal roads around the time of high tide.

Do not drive through flooded roadways.


Coastal Flood Statement issued June 14 at 1:24PM EDT until June 17 at 4:00AM EDT by NWS Boston/Norton MA

Effective: Sun June 14, 2026, 1:24 PM
Expires: Mon June 15, 2026, 12:00 PM

* WHAT...Up to one foot of inundation above ground level in low- lying areas near shorelines and tidal waterways (2.9 to 13.0 feet Mean Lower Low Water). * WHERE...Eastern Essex MA, Suffolk MA, Eastern Norfolk MA, Eastern Plymouth MA, Barnstable MA and Dukes MA Counties. * WHEN...Through late Tuesday night. The high tide cycles tonight, Monday night and Tuesday night are of the most concern. * IMPACTS...Shallow pockets of flooding less than one foot deep affects the lowest lying areas along the coast, including Morrissey Boulevard in Boston. Most roads remain passable. Flooding up to one foot deep affects coastal roads on the North Shore from Salem to Gloucester and Newburyport.

Do not drive through flooded roadways.


Coastal Flood Statement issued June 14 at 3:36AM EDT until June 16 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Sun June 14, 2026, 3:36 AM
Expires: Sun June 14, 2026, 6:00 PM

* WHAT...Up to one half foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways (4.4 to 7.2 feet Mean Lower Low Water) around the evening high tides. * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Monday night. The evening high tide periods tonight and Monday night are of the greatest concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.

Do not drive through flooded roadways.


Coastal Flood Statement issued June 14 at 1:24PM EDT until June 17 at 2:00AM EDT by NWS Boston/Norton MA

Effective: Sun June 14, 2026, 1:24 PM
Expires: Mon June 15, 2026, 12:00 PM

* WHAT...Up to one half foot of inundation above ground level in low-lying areas near shorelines and tidal waterways (4.4 to 7.2 feet Mean Lower Low Water). * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Southeast Providence RI, Eastern Kent RI, Bristol RI, and Newport RI Counties. * WHEN...Through late Tuesday night. The high tide cycles tonight, Monday night and Tuesday night are of the most concern. * IMPACTS...Minor coastal flooding occurs along the most vulnerable shoreline locales in Newport, Portsmouth and Middletown. This includes flooding at parking lots near beaches in Newport, and a portion of Hazard Road. Minor coastal flooding also occurs on several streets in the Common Fence Point area.

Do not drive through flooded roadways.


Beach Hazards Statement issued June 14 at 2:37AM EDT until June 14 at 8:00PM EDT by NWS Gray ME

Effective: Sun June 14, 2026, 2:37 AM
Expires: Sun June 14, 2026, 5:00 PM

* WHAT...For the Beach Hazards Statement, warm air temperatures in the 80s to near 90 may cause people to underestimate the dangers of the cold water temperatures in the upper 50s and lower 60s.. For the Coastal Flood Advisory, Minor coastal flooding is forecast. * WHERE...In Maine, Coastal York and Coastal Cumberland Counties. In New Hampshire, Coastal Rockingham County. * WHEN...For the Beach Hazards Statement, from 8 AM EDT this morning through this evening. For the Coastal Flood Advisory, from 9 PM this evening to 1 AM EDT Monday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. 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 lose dexterity within minutes and be unable to accomplish simple tasks. Anyone on boats or paddlecraft should use extreme caution to avoid this threat.

Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. A Beach Hazards Statement is issued on days when a significant number of boats and paddlecraft are expected to be out on the water and when warm air temperatures may cause people to underestimate the danger of the cold water. Paddle smart from the start. Always wear your life jacket. Be aware of wind conditions, tides, and localized currents. All boaters and paddlers are highly encouraged to contact the U.S. Coast Guard Auxiliary or U.S. Power Squadrons at https://cgaux.org/vsc/ to receive a FREE vessel check. This is a convenient, no consequence way to ensure your vessel is outfitted with all required safety equipment. Additionally, please label your paddlecraft with your contact information (IF FOUND Sticker) in the event it is found adrift on the water.


Sunday, June 14, 2026

Weather Forecast

Sunny
99.5°F
63°F
80.7°F
42%
0 in
1%
0%
15 mph
8.8


Air Quality

AQI: 1 - Good
PM2.5: 7.7 μg/m3
PM10: 8.62 μg/m3
Carbon Monoxide: 140.75 μg/m3
Nitrogen Dioxide: 6.2 μg/m3
Sulphur Dioxide: 0.87 μg/m3
Ozone: 103.42 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:24 PM
Daylight: 15 hrs 16 mins
Moonrise: 4:03 AM
Moon Transit: 12:15 AM
Moonset: 8:33 PM
Moon Phase: New
Moon Illumination: 0.7%

Best Times for Fishing or Hunting

Major Periods

1:48 AM - 4:18 AM
11:45 AM - 2:15 PM

Minor Periods

8:03 PM - 9:33 PM
3:33 AM - 5:03 AM

Action Rating: 5 out of 5

Monday, June 15, 2026

Weather Forecast

Patchy rain nearby
83.6°F
63.3°F
72.4°F
62%
0.17 in
59%
0%
10.1 mph
9


Air Quality

AQI: 1 - Good
PM2.5: 3.34 μg/m3
PM10: 3.82 μg/m3
Carbon Monoxide: 126.83 μg/m3
Nitrogen Dioxide: 4 μg/m3
Sulphur Dioxide: 0.49 μg/m3
Ozone: 87.5 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:24 PM
Daylight: 15 hrs 17 mins
Moonrise: 5:06 AM
Moon Transit: 1:23 PM
Moonset: 9:37 PM
Moon Phase: New
Moon Illumination: 3.8%

Best Times for Fishing or Hunting

Major Periods

2:56 AM - 5:26 AM
12:53 AM - 3:23 PM

Minor Periods

9:07 PM - 10:37 PM
4:36 AM - 6:06 AM

Action Rating: 4 out of 5

Tuesday, June 16, 2026

Weather Forecast

Sunny
79.9°F
53.8°F
66.7°F
50%
0 in
3%
0%
6.9 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 2.92 μg/m3
PM10: 3.14 μg/m3
Carbon Monoxide: 138.67 μg/m3
Nitrogen Dioxide: 5.7 μg/m3
Sulphur Dioxide: 0.53 μg/m3
Ozone: 70.83 μg/m3

Astronomical

Sunrise: 5:07 AM
Sun Transit: 12:45 AM
Sunset: 8:25 PM
Daylight: 15 hrs 17 mins
Moonrise: 6:22 AM
Moon Transit: 2:29 PM
Moonset: 10:27 PM
Moon Phase: New
Moon Illumination: 1.0%

Best Times for Fishing or Hunting

Major Periods

4:03 AM - 6:33 AM
1:59 PM - 4:29 PM

Minor Periods

9:57 PM - 11:27 PM
5:52 AM - 7:22 AM

Action Rating: 3 out of 5

Wednesday, June 17, 2026

Weather Forecast

Partly Cloudy
79.7°F
56.3°F
67.2°F
52%
0 in
17%
0%
9.8 mph
7.1


Air Quality

AQI: 1 - Good
PM2.5: 8.03 μg/m3
PM10: 9.95 μg/m3
Carbon Monoxide: 158.23 μg/m3
Nitrogen Dioxide: 8.98 μg/m3
Sulphur Dioxide: 0.95 μg/m3
Ozone: 91.75 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:25 PM
Daylight: 15 hrs 17 mins
Moonrise: 7:42 AM
Moon Transit: 3:30 PM
Moonset: 11:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 4.6%

Best Times for Fishing or Hunting

Major Periods

5:06 AM - 7:36 AM
3:00 PM - 5:30 PM

Minor Periods

12:00 AM - 12:00 AM
7:12 AM - 8:42 AM

Action Rating: 3 out of 5

Thursday, June 18, 2026

Weather Forecast

Moderate rain
85.1°F
57.7°F
69.4°F
84%
0.28 in
83%
0%
15 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 11.87 μg/m3
PM10: 15.52 μg/m3
Carbon Monoxide: 161.44 μg/m3
Nitrogen Dioxide: 11.68 μg/m3
Sulphur Dioxide: 1.17 μg/m3
Ozone: 66.11 μg/m3

Astronomical

Sunrise: 5:08 AM
Sun Transit: 12:46 AM
Sunset: 8:25 PM
Daylight: 15 hrs 18 mins
Moonrise: 9:02 AM
Moon Transit: 4:25 PM
Moonset: 12:04 AM
Moon Phase: Waxing Crescent
Moon Illumination: 10.4%

Best Times for Fishing or Hunting

Major Periods

6:04 AM - 8:34 AM
3:55 PM - 6:25 PM

Minor Periods

8:32 AM - 10:02 AM
12:00 AM - 12:00 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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