Water Temperature of Cambridge Reservoir in Lincoln, MA

Current Water Temperature

76.1°F

Measurement Time: Monday, July 20, 2026, 5:40 PM EDT

Temperature Locations

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Local Points of Interest

Hobbs Brook Basin

Cambridge Reservoir

Station Name: HOBBS BRK AT TRAPELO RD AT LINCOLN, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 167 feet

Nearest Address:
Trapelo Rd
Lincoln, MA 01773
Middlesex County

GPS Coordinates: 42.42166667, -71.2711111

Nearby Water Temperatures

Cambridge Reservoir Tributary 3, Waltham, MA (0.7 mi)
Hobbs Brook, Lincoln, MA (1 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (1.1 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (1.1 mi)
Stony Brook, Waltham, MA (1.6 mi)
Stony Brook, Weston, MA (2.7 mi)
Shawsheen River, Bedford, MA (3.1 mi)
Stony Brook Tributary, Waltham, MA (3.4 mi)
Stony Brook Tributary, Weston, MA (3.5 mi)
Stony Brook, Weston, MA (3.6 mi)
Stony Brook Reservoir Tributary, Weston, MA (4.6 mi)
Fresh Pond, Cambridge, MA (6.9 mi)
Nashua River, Clinton, MA (20.1 mi)
Gates Brook, West Boylston, MA (26 mi)
Stillwater River, Sterling, MA (26.5 mi)

Weather for Lincoln, Massachusetts

Current Weather

71.1°F
Clear
Clear
71.1°F
75.8°F
53%
SSW 7.8 mph
14.1 mph
70.9°F
51.5°F
0 in
0%
9 mi
1014 mbar
0

Five Day Weather Forecast

Sunny
Mon
H: 88°F
L: 55°F
Sunny
Tue
H: 83°F
L: 60°F
Partly Cloudy
Wed
H: 87°F
L: 65°F
Sunny
Thu
H: 76°F
L: 59°F
Sunny
Fri
H: 86°F
L: 56°F

Air Quality

AQI: 1 - Good
PM2.5: 8.3 μg/m3
PM10: 8.5 μg/m3
Carbon Monoxide: 151 μg/m3
Nitrogen Dioxide: 11.6 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 70 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:51 AM
Sunset: 8:17 PM
Daylight: 14 hrs 51 mins
Moonrise: 12:38 AM
Moon Transit: 6:05 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:47 AM - 10:17 AM
5:35 PM - 8:05 PM

Minor Periods

12:08 AM - 1:38 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

High Surf Advisory issued July 20 at 2:49PM EDT until July 23 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Mon July 20, 2026, 2:49 PM
Expires: Tue July 21, 2026, 6:00 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.


Gale Watch issued July 20 at 1:10AM EDT until July 22 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Mon July 20, 2026, 1:10 AM
Expires: Mon July 20, 2026, 7:00 PM

* WHAT...South winds 15 to 25 kt with gusts up to 35 kt and seas 6 to 9 feet possible. * WHERE...In Massachusetts coastal waters, Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...From Tuesday afternoon through Wednesday evening. Gale force winds more likely Tuesday night into Wednesday. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and seas.


Gale Watch issued July 20 at 2:50PM EDT until July 22 at 8:00PM EDT by NWS Boston/Norton MA

Effective: Mon July 20, 2026, 2:50 PM
Expires: Tue July 21, 2026, 6:00 AM

* WHAT...South winds 15 to 25 kt with gusts up to 30 kt and seas 6 to 9 feet possible. * WHERE...In Massachusetts coastal waters, Coastal waters east of Ipswich Bay and the Stellwagen Bank National Marine Sanctuary, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM and Coastal Waters extending out to 25 NM South of Marthas Vineyard and Nantucket. In Rhode Island coastal waters, Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 NM South of Block Island. * WHEN...From Tuesday afternoon through Wednesday evening. * IMPACTS...Strong winds can cause hazardous seas which could capsize or damage vessels and reduce visibility.

Mariners should consider altering plans to avoid possible hazardous conditions. Remain in port, seek safe harbor, alter course, and/or secure the vessel for severe wind and seas.


Monday, July 20, 2026

Weather Forecast

Sunny
88.3°F
55.2°F
72.4°F
46%
0 in
1%
0%
9.2 mph
7.9


Air Quality

AQI: 1 - Good
PM2.5: 6.2 μg/m3
PM10: 6.41 μg/m3
Carbon Monoxide: 121.58 μg/m3
Nitrogen Dioxide: 8.87 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 71.58 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:51 AM
Sunset: 8:17 PM
Daylight: 14 hrs 51 mins
Moonrise: 12:38 AM
Moon Transit: 6:05 PM
Moonset: 12:02 AM
Moon Phase: Waxing Crescent
Moon Illumination: 32.7%

Best Times for Fishing or Hunting

Major Periods

7:47 AM - 10:17 AM
5:35 PM - 8:05 PM

Minor Periods

12:08 AM - 1:38 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Tuesday, July 21, 2026

Weather Forecast

Sunny
82.7°F
59.9°F
71.2°F
68%
0.62 in
70%
0%
15 mph
6.7


Air Quality

AQI: 1 - Good
PM2.5: 8.88 μg/m3
PM10: 10.95 μg/m3
Carbon Monoxide: 140.88 μg/m3
Nitrogen Dioxide: 6.78 μg/m3
Sulphur Dioxide: 0.72 μg/m3
Ozone: 88.42 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

Partly Cloudy
86.8°F
64.7°F
75.6°F
69%
0.04 in
57%
0%
13.2 mph
5.8


Air Quality

AQI: 1 - Good
PM2.5: 2.94 μg/m3
PM10: 3.11 μg/m3
Carbon Monoxide: 147.46 μg/m3
Nitrogen Dioxide: 6.35 μg/m3
Sulphur Dioxide: 0.64 μg/m3
Ozone: 88.88 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:51 AM
Sunset: 8:15 PM
Daylight: 14 hrs 48 mins
Moonrise: 2:50 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

2:20 PM - 3:50 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Thursday, July 23, 2026

Weather Forecast

Sunny
76.4°F
58.5°F
66.7°F
53%
0 in
3%
0%
11.2 mph
8.1


Air Quality

AQI: 1 - Good
PM2.5: 4.61 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 160.94 μg/m3
Nitrogen Dioxide: 10.98 μg/m3
Sulphur Dioxide: 0.7 μg/m3
Ozone: 72.71 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

Sunny
86°F
55.8°F
70.3°F
50%
0 in
2%
0%
9.6 mph
7.8


Air Quality

AQI: 1 - Good
PM2.5: 12.09 μg/m3
PM10: 12.52 μg/m3
Carbon Monoxide: 310.78 μg/m3
Nitrogen Dioxide: 35.11 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 40.11 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

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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