Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

39.0°F

Measurement Time: Wednesday, January 7, 2026, 5:30 AM EST

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

Cambridge Reservoir Tributary 3

Station Name: CAMBRIDGE RES., UNNAMED TRIB 3, NR LEXINGTON, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 197 feet

Nearest Address:
170 Data Dr
Waltham, MA 02451
Middlesex County

GPS Coordinates: 42.4198177, -71.2575565

Nearby Water Temperatures

Cambridge Reservoir, Lincoln, MA (0.7 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (1.1 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (1.2 mi)
Hobbs Brook, Lincoln, MA (1.3 mi)
Stony Brook, Waltham, MA (1.7 mi)
Stony Brook, Weston, MA (2.9 mi)
Stony Brook Tributary, Waltham, MA (3.3 mi)
Shawsheen River, Bedford, MA (3.3 mi)
Stony Brook Tributary, Weston, MA (3.5 mi)
Stony Brook, Weston, MA (3.6 mi)
Stony Brook Reservoir Tributary, Weston, MA (4.5 mi)
Fresh Pond, Cambridge, MA (6.2 mi)
Nashua River, Clinton, MA (20.8 mi)
Gates Brook, West Boylston, MA (26.7 mi)
Stillwater River, Sterling, MA (27.2 mi)

Weather for Waltham, Massachusetts

Current Weather

30.9°F
Light freezing rain
Light freezing rain
27.6°F
30°F
92%
WNW 3.4 mph
5.1 mph
23.6°F
29.6°F
0 in
100%
1 mi
1004 mbar
0.2

Five Day Weather Forecast

Freezing fog
Wed
H: 34°F
L: 30°F
Sunny
Thu
H: 43°F
L: 30°F
Overcast
Fri
H: 42°F
L: 26°F
Moderate rain
Sat
H: 45°F
L: 38°F
Moderate rain
Sun
H: 38°F
L: 37°F

Air Quality

AQI: 1 - Good
PM2.5: 6.15 μg/m3
PM10: 6.45 μg/m3
Carbon Monoxide: 319.85 μg/m3
Nitrogen Dioxide: 29.45 μg/m3
Sulphur Dioxide: 5.25 μg/m3
Ozone: 35 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moonrise: 9:38 PM
Moon Transit: 3:18 AM
Moonset: 9:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
5:45 PM - 8:15 PM

Minor Periods

9:08 PM - 10:38 PM
9:25 AM - 10:55 AM

Action Rating: 2 out of 5

Winter Weather Advisory issued January 7 at 12:32AM EST until January 7 at 10:00AM EST by NWS Boston/Norton MA

Effective: Wed January 7, 2026, 12:32 AM
Expires: Wed January 7, 2026, 10:00 AM

* WHAT...Freezing rain. Additional ice accumulations around one tenth of an inch across interior areas of southern New England, while a trace of ice along the coastal plain and I-95 corridor. * WHERE...Portions of northern Connecticut, central, eastern, northeastern, southeastern, and western Massachusetts, and northern Rhode Island. * WHEN...Until 10 AM EST this morning. * IMPACTS...Roads, and especially bridges and overpasses, will likely become slick and hazardous. Difficult travel conditions are possible. The hazardous conditions could impact the Wednesday morning commute.

Slow down and use caution while traveling. Prepare for possible power outages.


Winter Weather Advisory issued January 7 at 12:37AM EST until January 7 at 10:00AM EST by NWS Gray ME

Effective: Wed January 7, 2026, 12:37 AM
Expires: Wed January 7, 2026, 10:00 AM

* WHAT...Mixed precipitation. Additional snow accumulations up to two inches for a storm total of up to 3 inches, sleet accumulations between one tenth and two tenths of an inch, and ice accumulations around a light glaze. * WHERE...Portions of south central and southwest Maine and central, northern, and southern New Hampshire. * WHEN...Until 10 AM EST this morning. * IMPACTS...A mix of snow, sleet, and freezing rain are expected to to make for slippery travel this morning.

Slow down and use caution while traveling. The latest road conditions can be obtained by going to newengland511.org
Wednesday, January 7, 2026

Weather Forecast

Freezing fog
33.8°F
29.7°F
32°F
94%
0.12 in
72%
49%
9.2 mph
0


Air Quality

AQI: 2 - Moderate
PM2.5: 16.58 μg/m3
PM10: 19.43 μg/m3
Carbon Monoxide: 293.09 μg/m3
Nitrogen Dioxide: 35.56 μg/m3
Sulphur Dioxide: 5.27 μg/m3
Ozone: 27 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:29 PM
Daylight: 9 hrs 15 mins
Moonrise: 9:38 PM
Moon Transit: 3:18 AM
Moonset: 9:55 AM
Moon Phase: Waning Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

2:48 AM - 5:18 AM
5:45 PM - 8:15 PM

Minor Periods

9:08 PM - 10:38 PM
9:25 AM - 10:55 AM

Action Rating: 2 out of 5

Thursday, January 8, 2026

Weather Forecast

Sunny
43.2°F
30°F
35.1°F
83%
0 in
0%
0%
8.1 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 8.8 μg/m3
PM10: 8.91 μg/m3
Carbon Monoxide: 295.01 μg/m3
Nitrogen Dioxide: 27.15 μg/m3
Sulphur Dioxide: 4.76 μg/m3
Ozone: 29.68 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:51 AM
Sunset: 4:30 PM
Daylight: 9 hrs 16 mins
Moonrise: 10:44 PM
Moon Transit: 4:02 AM
Moonset: 10:15 AM
Moon Phase: Waning Gibbous
Moon Illumination: 68.7%

Best Times for Fishing or Hunting

Major Periods

3:32 AM - 6:02 AM
6:27 PM - 8:57 PM

Minor Periods

10:14 PM - 11:44 PM
9:45 AM - 11:15 AM

Action Rating: 2 out of 5

Friday, January 9, 2026

Weather Forecast

Overcast
41.9°F
25.7°F
36.2°F
94%
0 in
0%
0%
15.2 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 19.05 μg/m3
PM10: 21.01 μg/m3
Carbon Monoxide: 357.93 μg/m3
Nitrogen Dioxide: 39.79 μg/m3
Sulphur Dioxide: 5.87 μg/m3
Ozone: 20.32 μg/m3

Astronomical

Sunrise: 7:14 AM
Sun Transit: 11:52 AM
Sunset: 4:31 PM
Daylight: 9 hrs 17 mins
Moonrise: 11:48 PM
Moon Transit: 4:44 AM
Moonset: 10:34 AM
Moon Phase: Waning Gibbous
Moon Illumination: 57.8%

Best Times for Fishing or Hunting

Major Periods

4:14 AM - 6:44 AM
7:09 PM - 9:39 PM

Minor Periods

12:00 AM - 12:00 AM
10:04 AM - 11:34 AM

Action Rating: 3 out of 5

Saturday, January 10, 2026

Weather Forecast

Moderate rain
45°F
37.7°F
42.6°F
91%
0.52 in
88%
0%
10.3 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 11.82 μg/m3
PM10: 13.47 μg/m3
Carbon Monoxide: 265.67 μg/m3
Nitrogen Dioxide: 25.33 μg/m3
Sulphur Dioxide: 5.33 μg/m3
Ozone: 35.24 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:52 AM
Sunset: 4:32 PM
Daylight: 9 hrs 19 mins
Moonrise: 12:48 AM
Moon Transit: 5:25 AM
Moonset: 10:53 AM
Moon Phase: Last Quarter
Moon Illumination: 46.5%

Best Times for Fishing or Hunting

Major Periods

4:55 AM - 7:25 AM
7:50 PM - 10:20 PM

Minor Periods

10:23 AM - 11:53 AM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Sunday, January 11, 2026

Weather Forecast

Moderate rain
38.4°F
37.1°F
38.2°F
98%
0.47 in
79%
0%
8.7 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 7.1 μg/m3
PM10: 9.05 μg/m3
Carbon Monoxide: 215.64 μg/m3
Nitrogen Dioxide: 16.48 μg/m3
Sulphur Dioxide: 2.84 μg/m3
Ozone: 49.62 μg/m3

Astronomical

Sunrise: 7:13 AM
Sun Transit: 11:53 AM
Sunset: 4:33 PM
Daylight: 9 hrs 20 mins
Moonrise: 12:52 AM
Moon Transit: 6:07 AM
Moonset: 11:14 AM
Moon Phase: Last Quarter
Moon Illumination: 35.3%

Best Times for Fishing or Hunting

Major Periods

5:37 AM - 8:07 AM
8:33 PM - 11:03 PM

Minor Periods

10:44 AM - 12:14 AM
12:22 AM - 1:52 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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