Water Temperature of the St. Croix River in Calais, ME

Current Water Temperature

43.2°F

Measurement Time: Saturday, April 11, 2026, 10:45 PM EDT

Temperature Locations

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Local Points of Interest

St. Stephen, NB

St. Croix River

Station Name: St. Croix River at Milltown, Maine
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 62 feet

Nearest Address:
531 North St
Calais, ME 04619
Washington County

GPS Coordinates: 45.17, -67.2966667

Nearby Water Temperatures

Lewy Lake, Princeton, ME (14.2 mi)
Grand Lake Stream, Grand Lake Stream, ME (23.5 mi)
Gulf of Maine, Eastport, ME (23.9 mi)
Narraguagus River, Cherryfield, ME (49.8 mi)
Penobscot River, Eddington, ME (72.4 mi)
Meduxnekeag River, Houlton, ME (74 mi)
Piscataquis River, Guilford, ME (98.3 mi)
Ducktrap River, Lincolnville, ME (104.2 mi)
Sheepscot River, Whitefield, ME (130.4 mi)
Gulf of Maine, Monhegan, ME (142.9 mi)
Allagash River, Allagash, ME (156.6 mi)
St. John River, Saint Francis, ME (157.1 mi)
Gulf of Maine, Portland, ME (179.1 mi)
Gulf of Maine, Cape Elizabeth, ME (180.7 mi)
Wild River, Gilead, ME (188.5 mi)

Weather for Calais, Maine

Current Weather

31.5°F
Clear
Clear
22.5°F
32.3°F
63%
NW 11 mph
17.6 mph
26.8°F
24.6°F
0 in
0%
6 mi
1024 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 55°F
L: 32°F
Heavy rain
Mon
H: 55°F
L: 37°F
Patchy rain nearby
Tue
H: 58°F
L: 45°F
Moderate rain
Wed
H: 58°F
L: 43°F
Overcast
Thu
H: 60°F
L: 44°F

Air Quality

PM2.5: 5.34 μg/m3
PM10: 8.74 μg/m3
Carbon Monoxide: 171.84 μg/m3
Nitrogen Dioxide: 2.04 μg/m3
Sulphur Dioxide: 1.74 μg/m3
Ozone: 90 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:29 AM
Sunset: 7:11 PM
Daylight: 13 hrs 22 mins
Moonrise: 3:41 AM
Moon Transit: 8:34 AM
Moonset: 1:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:04 AM - 10:34 AM
12:00 AM - 12:00 AM

Minor Periods

1:07 PM - 2:37 PM
3:11 AM - 4:41 AM

Action Rating: 2 out of 5

Sunday, April 12, 2026

Weather Forecast

Sunny
55.2°F
31.8°F
42.8°F
50%
0 in
0%
0%
11.9 mph
1.3


Air Quality

AQI: 1 - Good
PM2.5: 4.8 μg/m3
PM10: 7 μg/m3
Carbon Monoxide: 173 μg/m3
Nitrogen Dioxide: 1.76 μg/m3
Sulphur Dioxide: 1.39 μg/m3
Ozone: 96.6 μg/m3

Astronomical

Sunrise: 5:49 AM
Sun Transit: 12:29 AM
Sunset: 7:11 PM
Daylight: 13 hrs 22 mins
Moonrise: 3:41 AM
Moon Transit: 8:34 AM
Moonset: 1:37 PM
Moon Phase: Waning Crescent
Moon Illumination: 12.6%

Best Times for Fishing or Hunting

Major Periods

8:04 AM - 10:34 AM
12:00 AM - 12:00 AM

Minor Periods

1:07 PM - 2:37 PM
3:11 AM - 4:41 AM

Action Rating: 2 out of 5

Monday, April 13, 2026

Weather Forecast

Heavy rain
54.5°F
37°F
44.6°F
86%
3.25 in
87%
0%
16.1 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 6.84 μg/m3
PM10: 8.3 μg/m3
Carbon Monoxide: 174.84 μg/m3
Nitrogen Dioxide: 2.98 μg/m3
Sulphur Dioxide: 1.86 μg/m3
Ozone: 93.48 μg/m3

Astronomical

Sunrise: 5:48 AM
Sun Transit: 12:29 AM
Sunset: 7:12 PM
Daylight: 13 hrs 25 mins
Moonrise: 4:02 AM
Moon Transit: 9:20 AM
Moonset: 2:50 PM
Moon Phase: Waning Crescent
Moon Illumination: 6.1%

Best Times for Fishing or Hunting

Major Periods

8:50 AM - 11:20 AM
12:00 AM - 12:00 AM

Minor Periods

2:20 PM - 3:50 PM
3:32 AM - 5:02 AM

Action Rating: 2 out of 5

Tuesday, April 14, 2026

Weather Forecast

Patchy rain nearby
57.9°F
44.5°F
50.9°F
79%
0.14 in
74%
0%
9.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 4.51 μg/m3
PM10: 4.73 μg/m3
Carbon Monoxide: 176.08 μg/m3
Nitrogen Dioxide: 3.12 μg/m3
Sulphur Dioxide: 1.99 μg/m3
Ozone: 89.28 μg/m3

Astronomical

Sunrise: 5:46 AM
Sun Transit: 12:29 AM
Sunset: 7:14 PM
Daylight: 13 hrs 28 mins
Moonrise: 4:22 AM
Moon Transit: 12:00 AM
Moonset: 4:04 PM
Moon Phase: Waning Crescent
Moon Illumination: 1.9%

Best Times for Fishing or Hunting

Major Periods

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

Minor Periods

3:34 PM - 5:04 PM
3:52 AM - 5:22 AM

Action Rating: 3 out of 5

Wednesday, April 15, 2026

Weather Forecast

Moderate rain
58.3°F
43.3°F
50.6°F
94%
0.31 in
82%
0%
6.5 mph
1.2


Air Quality

AQI: 1 - Good
PM2.5: 3.28 μg/m3
PM10: 3.37 μg/m3
Carbon Monoxide: 186.42 μg/m3
Nitrogen Dioxide: 3.48 μg/m3
Sulphur Dioxide: 1.57 μg/m3
Ozone: 78.54 μg/m3

Astronomical

Sunrise: 5:44 AM
Sun Transit: 12:29 AM
Sunset: 7:15 PM
Daylight: 13 hrs 31 mins
Moonrise: 4:41 AM
Moon Transit: 11:33 AM
Moonset: 5:19 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

11:03 AM - 1:33 PM
11:03 AM - 1:33 PM

Minor Periods

4:49 PM - 6:19 PM
4:11 AM - 5:41 AM

Action Rating: 3 out of 5

Thursday, April 16, 2026

Weather Forecast

Overcast
59.9°F
43.7°F
50.3°F
86%
0 in
0%
0%
6.7 mph
0.1


Air Quality

AQI: 0 -
PM2.5: 0 μg/m3
PM10: 0 μg/m3
Carbon Monoxide: 0 μg/m3
Nitrogen Dioxide: 0 μg/m3
Sulphur Dioxide: 0 μg/m3
Ozone: 0 μg/m3

Astronomical

Sunrise: 5:42 AM
Sun Transit: 12:28 AM
Sunset: 7:16 PM
Daylight: 13 hrs 34 mins
Moonrise: 5:00 AM
Moon Transit: 11:41 AM
Moonset: 6:39 PM
Moon Phase: New
Moon Illumination: 0.8%

Best Times for Fishing or Hunting

Major Periods

1:54 AM - 4:24 AM
11:11 AM - 1:41 PM

Minor Periods

6:09 PM - 7:39 PM
4:30 AM - 6:00 AM

Action Rating: 5 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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