Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

68.0°F

Measurement Time: Tuesday, July 21, 2026, 4:40 PM EDT

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

68.4°F

Conditions: Overcast

Feels Like: 68.4°F

Heat Index: 77.6°F

Humidity: 96%

Wind: SSE 7.8 mph

Wind Gusts: 14.9 mph

Wind Chill: 73.6°F

Dew Point: 70.6°F

Precipitation: 0 in

Cloud Cover: 100%

Visibility: 8 mi

Air Pressure: 1008 mbar

UV Index: 0

Five Day Weather Forecast

Tue
H: 87°F
L: 60°F

Wed
H: 84°F
L: 64°F

Thu
H: 81°F
L: 55°F

Fri
H: 84°F
L: 56°F

Sat
H: 79°F
L: 56°F

Air Quality

AQI: 1 - Good

PM2.5: 15 μg/m3

PM10: 18 μg/m3

Carbon Monoxide: 166 μg/m3
Nitrogen Dioxide: 8.3 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:16 PM
Daylight: 14 hrs 49 mins

Moonrise: 1:44 PM
Moon Transit: 6:49 PM
Moonset: 12:23 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:31 AM - 11:01 AM
6:19 PM - 8:49 PM

Minor Periods

1:14 PM - 2:44 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

High Surf Advisory issued July 21 at 2:31PM EDT until July 23 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Tue July 21, 2026, 2:31 PM
Expires: Wed July 22, 2026, 3:45 AM

* WHAT...Large breaking waves of 4 to 10 feet expected in the surf zone. * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Barnstable MA, Dukes MA, Nantucket MA, and Newport RI Counties. * WHEN...From 6 AM Wednesday to 8 PM EDT Thursday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.

Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

High Surf Advisory issued July 21 at 8:56AM EDT until July 23 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Tue July 21, 2026, 8:56 AM
Expires: Wed July 22, 2026, 9:00 AM

* WHAT...Large breaking waves of 4 to 8 feet expected in the surf zone. * WHERE...Washington, Southern Bristol MA, Southern Plymouth MA, Barnstable MA, Dukes MA, Nantucket MA, and Newport RI Counties. * WHEN...From 6 AM Wednesday to 8 PM EDT Thursday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion.

Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

Tuesday, July 21, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 86.5°F

Low Temperature: 60.1°F

Average Temperature: 72.5°F

Average Humidity: 73%

Precipitation: 0.39 in

Chance of Rain: 70%

Chance of Snow: 0%

Maximum Wind: 13 mph

UV Index: 6.7

Air Quality

AQI: 1 - Good

PM2.5: 10.1 μg/m3

PM10: 12.23 μg/m3

Carbon Monoxide: 144.83 μg/m3
Nitrogen Dioxide: 7.96 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 89.96 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:16 PM
Daylight: 14 hrs 49 mins

Moonrise: 1:44 PM
Moon Transit: 6:49 PM
Moonset: 12:23 AM
Moon Phase: First Quarter
Moon Illumination: 43.7%

Best Times for Fishing or Hunting

Major Periods

8:31 AM - 11:01 AM
6:19 PM - 8:49 PM

Minor Periods

1:14 PM - 2:44 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Wednesday, July 22, 2026

Weather Forecast

Conditions: Patchy rain nearby

High Temperature: 84.4°F

Low Temperature: 64.1°F

Average Temperature: 73.4°F

Average Humidity: 73%

Precipitation: 0.21 in

Chance of Rain: 74%

Chance of Snow: 0%

Maximum Wind: 11.9 mph

UV Index: 5.8

Air Quality

AQI: 1 - Good

PM2.5: 4.79 μg/m3

PM10: 5.02 μg/m3

Carbon Monoxide: 154.79 μg/m3
Nitrogen Dioxide: 7.61 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 95.92 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:15 PM
Daylight: 14 hrs 48 mins

Moonrise: 2:49 PM
Moon Transit: 7:34 PM
Moonset: 12:46 AM
Moon Phase: First Quarter
Moon Illumination: 55.0%

Best Times for Fishing or Hunting

Major Periods

9:16 AM - 11:46 AM
7:04 PM - 9:34 PM

Minor Periods

2:19 PM - 3:49 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 81°F

Low Temperature: 55.3°F

Average Temperature: 67.4°F

Average Humidity: 54%

Precipitation: 0 in

Chance of Rain: 3%

Chance of Snow: 0%

Maximum Wind: 8.1 mph

UV Index: 8.1

Air Quality

AQI: 1 - Good

PM2.5: 3.94 μg/m3

PM10: 3.96 μg/m3

Carbon Monoxide: 146.04 μg/m3
Nitrogen Dioxide: 10.11 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 60.96 μg/m3

Astronomical

Sunrise: 5:28 AM
Sun Transit: 12:51 AM
Sunset: 8:14 PM
Daylight: 14 hrs 46 mins

Moonrise: 3:54 PM
Moon Transit: 8:22 PM
Moonset: 12:14 AM
Moon Phase: First Quarter
Moon Illumination: 66.1%

Best Times for Fishing or Hunting

Major Periods

10:03 AM - 12:33 AM
7:52 PM - 10:22 PM

Minor Periods

3:24 PM - 4:54 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Friday, July 24, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 84.3°F

Low Temperature: 56°F

Average Temperature: 68.8°F

Average Humidity: 56%

Precipitation: 0 in

Chance of Rain: 3%

Chance of Snow: 0%

Maximum Wind: 10.1 mph

UV Index: 7.8

Air Quality

AQI: 1 - Good

PM2.5: 10.45 μg/m3

PM10: 10.83 μg/m3

Carbon Monoxide: 188.39 μg/m3
Nitrogen Dioxide: 16.15 μg/m3
Sulphur Dioxide: 0.76 μg/m3
Ozone: 78.13 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:51 AM
Sunset: 8:13 PM
Daylight: 14 hrs 44 mins

Moonrise: 4:56 PM
Moon Transit: 9:12 PM
Moonset: 12:47 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 76.3%

Best Times for Fishing or Hunting

Major Periods

10:52 AM - 1:22 PM
8:42 PM - 11:12 PM

Minor Periods

4:26 PM - 5:56 PM
12:17 AM - 1:47 AM

Action Rating: 3 out of 5

Saturday, July 25, 2026

Weather Forecast

Conditions: Sunny

High Temperature: 79.1°F

Low Temperature: 55.8°F

Average Temperature: 66.6°F

Average Humidity: 56%

Precipitation: 0 in

Chance of Rain: 3%

Chance of Snow: 0%

Maximum Wind: 9.2 mph

UV Index: 7

Air Quality

AQI: 1 - Good

PM2.5: 10.39 μg/m3

PM10: 10.88 μg/m3

Carbon Monoxide: 234.11 μg/m3
Nitrogen Dioxide: 21.03 μg/m3
Sulphur Dioxide: 0.78 μg/m3
Ozone: 47.89 μg/m3

Astronomical

Sunrise: 5:30 AM
Sun Transit: 12:51 AM
Sunset: 8:12 PM
Daylight: 14 hrs 42 mins

Moonrise: 5:52 PM
Moon Transit: 10:03 PM
Moonset: 1:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 85.2%

Best Times for Fishing or Hunting

Major Periods

11:43 AM - 2:13 PM
12:00 AM - 12:00 AM

Minor Periods

5:22 PM - 6:52 PM
12:56 AM - 2:26 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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Water Temperature of Cambridge Reservoir Tributary 3 in Waltham, MA

Current Water Temperature

Temperature Locations

Local Points of Interest

Nearby Water Temperatures

Weather for Waltham, Massachusetts

Current Weather

Five Day Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

High Surf Advisory issued July 21 at 2:31PM EDT until July 23 at 8:00PM EDT by NWS Boston/Norton MA

High Surf Advisory issued July 21 at 8:56AM EDT until July 23 at 8:00PM EDT by NWS Boston/Norton MA

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Weather Forecast

Air Quality

Astronomical

Best Times for Fishing or Hunting

Major Periods

Minor Periods

Webcams Near Waltham, MA

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