Water Temperature of the Stillwater River in Sterling, MA

Current Water Temperature

69.4°F

Measurement Time: Wednesday, July 15, 2026, 7:30 PM EDT

Temperature Locations

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Stillwater River

Station Name: STILLWATER RIVER NEAR STERLING, MA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 423 feet

Nearest Address:
98 Dana Hill Rd
Sterling, MA 01564
Worcester County

GPS Coordinates: 42.41092507, -71.7911829

Nearby Water Temperatures

Quinapoxet River, Holden, MA (3.2 mi)
Gates Brook, West Boylston, MA (3.3 mi)
Nashua River, Clinton, MA (6.4 mi)
Ware River, Barre, MA (14 mi)
Stony Brook, Weston, MA (25.7 mi)
Stony Brook, Waltham, MA (26.4 mi)
Stony Brook Tributary, Weston, MA (26.5 mi)
Cambridge Reservoir, Lincoln, MA (26.5 mi)
Hobbs Brook, Lincoln, MA (26.7 mi)
Stony Brook Tributary, Waltham, MA (26.7 mi)
Stony Brook, Weston, MA (26.7 mi)
Shawsheen River, Bedford, MA (26.7 mi)
Cambridge Reservoir Tributary 1, Lexington, MA (26.9 mi)
Stony Brook Reservoir Tributary, Weston, MA (27 mi)
Cambridge Reservoir Tributary 2, Lexington, MA (27.1 mi)

Weather for Sterling, Massachusetts

Current Weather

66.9°F
Clear
Clear
66.9°F
67.6°F
63%
WSW 4.3 mph
8.9 mph
67.6°F
56.1°F
0 in
0%
9 mi
1011 mbar
0

Five Day Weather Forecast

Sunny
Wed
H: 91°F
L: 68°F
Sunny
Thu
H: 89°F
L: 64°F
Sunny
Fri
H: 84°F
L: 60°F
Sunny
Sat
H: 91°F
L: 57°F
Sunny
Sun
H: 79°F
L: 58°F

Air Quality

AQI: 1 - Good
PM2.5: 19.2 μg/m3
PM10: 19.8 μg/m3
Carbon Monoxide: 177 μg/m3
Nitrogen Dioxide: 14 μg/m3
Sulphur Dioxide: 0.6 μg/m3
Ozone: 65 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:53 AM
Sunset: 8:23 PM
Daylight: 14 hrs 59 mins
Moonrise: 6:37 AM
Moon Transit: 2:12 PM
Moonset: 9:33 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
1:42 PM - 4:12 PM

Minor Periods

9:03 PM - 10:33 PM
6:07 AM - 7:37 AM

Action Rating: 3 out of 5

Air Quality Alert issued July 15 at 9:13AM EDT by NWS Boston/Norton MA

Effective: Wed July 15, 2026, 9:13 AM
Expires: Thu July 16, 2026, 12:00 AM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Fine Particulates, until midnight EDT tonight. An Air Quality Alert day means that Fine Particulates concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast


Air Quality Alert issued July 15 at 9:09AM EDT by NWS Boston/Norton MA

Effective: Wed July 15, 2026, 9:09 AM
Expires: Thu July 16, 2026, 12:00 AM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Fine Particulates, until noon EDT Thursday. An Air Quality Alert day means that Fine Particulates concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast


Air Quality Alert issued July 15 at 8:50AM EDT by NWS Boston/Norton MA

Effective: Wed July 15, 2026, 8:50 AM
Expires: Thu July 16, 2026, 12:00 AM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Ground Level Ozone, until noon EDT Thursday. An Air Quality Alert day means that Ground Level Ozone concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast


Air Quality Alert issued July 15 at 4:34PM EDT by NWS Boston/Norton MA

Effective: Wed July 15, 2026, 4:34 PM
Expires: Thu July 16, 2026, 12:00 PM

The Massachusetts Department of Environmental Protection has issued an Air Quality Alert for Fine Particulates, until midnight EDT Thursday night. An Air Quality Alert day means that Fine Particulates concentrations within the region may approach or exceed levels that are Unhealthy for Sensitive Groups. Air is unhealthy for sensitive children and adults, such as those with asthma, lung or heart disease, and older adults. Sensitive children and adults should limit prolonged outdoor activity. For additional information, please visit the Massachusetts Department of Environmental Protection website at: https://mass.gov/dep/massair/forecast
Wednesday, July 15, 2026

Weather Forecast

Sunny
90.5°F
67.6°F
80.5°F
59%
0 in
3%
0%
15.7 mph
7.1


Air Quality

AQI: 2 - Moderate
PM2.5: 17.28 μg/m3
PM10: 17.82 μg/m3
Carbon Monoxide: 138.58 μg/m3
Nitrogen Dioxide: 3.75 μg/m3
Sulphur Dioxide: 0.94 μg/m3
Ozone: 99.25 μg/m3

Astronomical

Sunrise: 5:23 AM
Sun Transit: 12:53 AM
Sunset: 8:23 PM
Daylight: 14 hrs 59 mins
Moonrise: 6:37 AM
Moon Transit: 2:12 PM
Moonset: 9:33 PM
Moon Phase: New
Moon Illumination: 0.2%

Best Times for Fishing or Hunting

Major Periods

3:45 AM - 6:15 AM
1:42 PM - 4:12 PM

Minor Periods

9:03 PM - 10:33 PM
6:07 AM - 7:37 AM

Action Rating: 3 out of 5

Thursday, July 16, 2026

Weather Forecast

Sunny
89.3°F
64.4°F
75.6°F
52%
0 in
2%
0%
16.1 mph
5.2


Air Quality

AQI: 2 - Moderate
PM2.5: 18.39 μg/m3
PM10: 18.95 μg/m3
Carbon Monoxide: 150.83 μg/m3
Nitrogen Dioxide: 6.87 μg/m3
Sulphur Dioxide: 0.65 μg/m3
Ozone: 86.63 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:53 AM
Sunset: 8:22 PM
Daylight: 14 hrs 58 mins
Moonrise: 7:57 AM
Moon Transit: 3:05 PM
Moonset: 10:00 PM
Moon Phase: New
Moon Illumination: 2.4%

Best Times for Fishing or Hunting

Major Periods

4:40 AM - 7:10 AM
2:35 PM - 5:05 PM

Minor Periods

9:30 PM - 11:00 PM
7:27 AM - 8:57 AM

Action Rating: 3 out of 5

Friday, July 17, 2026

Weather Forecast

Sunny
83.8°F
59.5°F
70.6°F
42%
0 in
2%
0%
8.1 mph
8.6


Air Quality

AQI: 1 - Good
PM2.5: 4.58 μg/m3
PM10: 4.75 μg/m3
Carbon Monoxide: 131.63 μg/m3
Nitrogen Dioxide: 5.02 μg/m3
Sulphur Dioxide: 0.33 μg/m3
Ozone: 73.83 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:53 AM
Sunset: 8:21 PM
Daylight: 14 hrs 56 mins
Moonrise: 9:13 AM
Moon Transit: 3:54 PM
Moonset: 10:23 PM
Moon Phase: Waxing Crescent
Moon Illumination: 7.0%

Best Times for Fishing or Hunting

Major Periods

5:31 AM - 8:01 AM
3:24 PM - 5:54 PM

Minor Periods

9:53 PM - 11:23 PM
8:43 AM - 10:13 AM

Action Rating: 3 out of 5

Saturday, July 18, 2026

Weather Forecast

Sunny
90.5°F
57.3°F
72.2°F
59%
0.01 in
36%
0%
17.4 mph
5.9


Air Quality

AQI: 1 - Good
PM2.5: 12.79 μg/m3
PM10: 14.73 μg/m3
Carbon Monoxide: 183.38 μg/m3
Nitrogen Dioxide: 8.74 μg/m3
Sulphur Dioxide: 0.82 μg/m3
Ozone: 88.79 μg/m3

Astronomical

Sunrise: 5:26 AM
Sun Transit: 12:53 AM
Sunset: 8:20 PM
Daylight: 14 hrs 54 mins
Moonrise: 10:25 AM
Moon Transit: 4:40 PM
Moonset: 10:44 PM
Moon Phase: Waxing Crescent
Moon Illumination: 13.9%

Best Times for Fishing or Hunting

Major Periods

6:17 AM - 8:47 AM
4:10 PM - 6:40 PM

Minor Periods

10:14 PM - 11:44 PM
9:55 AM - 11:25 AM

Action Rating: 2 out of 5

Sunday, July 19, 2026

Weather Forecast

Sunny
79.3°F
58.2°F
71.8°F
66%
0.05 in
57%
0%
16.6 mph
6.6


Air Quality

AQI: 1 - Good
PM2.5: 2.49 μg/m3
PM10: 2.6 μg/m3
Carbon Monoxide: 147.63 μg/m3
Nitrogen Dioxide: 2.79 μg/m3
Sulphur Dioxide: 0.59 μg/m3
Ozone: 92.92 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:53 AM
Sunset: 8:20 PM
Daylight: 14 hrs 53 mins
Moonrise: 11:33 AM
Moon Transit: 5:23 PM
Moonset: 11:04 PM
Moon Phase: Waxing Crescent
Moon Illumination: 22.6%

Best Times for Fishing or Hunting

Major Periods

7:02 AM - 9:32 AM
4:53 PM - 7:23 PM

Minor Periods

12:00 AM - 12:00 AM
11:03 AM - 12:33 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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