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

Current Water Temperature

46.9°F

Measurement Time: Friday, April 24, 2026, 5:45 AM 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

41.4°F
Partly Cloudy
Partly Cloudy
35.5°F
40.6°F
64%
NNW 9.6 mph
11.1 mph
35.1°F
30.9°F
0 in
0%
6 mi
1009 mbar
2.6

Five Day Weather Forecast

Patchy rain nearby
Fri
H: 44°F
L: 29°F
Overcast
Sat
H: 53°F
L: 26°F
Overcast
Sun
H: 54°F
L: 32°F
Overcast
Mon
H: 58°F
L: 43°F
Cloudy
Tue
H: 59°F
L: 36°F

Air Quality

PM2.5: 1.74 μg/m3
PM10: 1.94 μg/m3
Carbon Monoxide: 150.84 μg/m3
Nitrogen Dioxide: 1.34 μg/m3
Sulphur Dioxide: 1.04 μg/m3
Ozone: 79 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:27 AM
Sunset: 7:26 PM
Daylight: 13 hrs 58 mins
Moonrise: 11:54 AM
Moon Transit: 7:32 PM
Moonset: 2:29 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

9:45 AM - 12:15 AM
7:02 PM - 9:32 PM

Minor Periods

11:24 AM - 12:54 AM
1:59 AM - 3:29 AM

Action Rating: 3 out of 5

Friday, April 24, 2026

Weather Forecast

Patchy rain nearby
44°F
29.1°F
37.4°F
76%
0.05 in
91%
4%
9.6 mph
4.5


Air Quality

AQI: 1 - Good
PM2.5: 3.65 μg/m3
PM10: 4.54 μg/m3
Carbon Monoxide: 158.36 μg/m3
Nitrogen Dioxide: 1.99 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 83.56 μg/m3

Astronomical

Sunrise: 5:29 AM
Sun Transit: 12:27 AM
Sunset: 7:26 PM
Daylight: 13 hrs 58 mins
Moonrise: 11:54 AM
Moon Transit: 7:32 PM
Moonset: 2:29 AM
Moon Phase: First Quarter
Moon Illumination: 50.4%

Best Times for Fishing or Hunting

Major Periods

9:45 AM - 12:15 AM
7:02 PM - 9:32 PM

Minor Periods

11:24 AM - 12:54 AM
1:59 AM - 3:29 AM

Action Rating: 3 out of 5

Saturday, April 25, 2026

Weather Forecast

Overcast
52.6°F
26.4°F
39.4°F
75%
0 in
0%
0%
8.5 mph
5.6


Air Quality

AQI: 1 - Good
PM2.5: 2.28 μg/m3
PM10: 2.88 μg/m3
Carbon Monoxide: 141.2 μg/m3
Nitrogen Dioxide: 2.1 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 79.64 μg/m3

Astronomical

Sunrise: 5:27 AM
Sun Transit: 12:27 AM
Sunset: 7:28 PM
Daylight: 14 hrs mins
Moonrise: 1:10 PM
Moon Transit: 8:20 PM
Moonset: 2:55 AM
Moon Phase: First Quarter
Moon Illumination: 61.6%

Best Times for Fishing or Hunting

Major Periods

10:34 AM - 1:04 PM
7:50 PM - 10:20 PM

Minor Periods

12:40 AM - 2:10 PM
2:25 AM - 3:55 AM

Action Rating: 3 out of 5

Sunday, April 26, 2026

Weather Forecast

Overcast
54°F
31.7°F
43.7°F
77%
0 in
0%
0%
5.6 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 2.93 μg/m3
PM10: 3.42 μg/m3
Carbon Monoxide: 144.88 μg/m3
Nitrogen Dioxide: 3.26 μg/m3
Sulphur Dioxide: 1.45 μg/m3
Ozone: 71.8 μg/m3

Astronomical

Sunrise: 5:25 AM
Sun Transit: 12:26 AM
Sunset: 7:29 PM
Daylight: 14 hrs 3 mins
Moonrise: 2:23 PM
Moon Transit: 9:05 PM
Moonset: 3:16 AM
Moon Phase: First Quarter
Moon Illumination: 72.3%

Best Times for Fishing or Hunting

Major Periods

11:20 AM - 1:50 PM
8:35 PM - 11:05 PM

Minor Periods

1:53 PM - 3:23 PM
2:46 AM - 4:16 AM

Action Rating: 2 out of 5

Monday, April 27, 2026

Weather Forecast

Overcast
57.6°F
42.5°F
48.3°F
72%
0 in
0%
0%
4 mph
4


Air Quality

AQI: 1 - Good
PM2.5: 3.01 μg/m3
PM10: 3.17 μg/m3
Carbon Monoxide: 165.41 μg/m3
Nitrogen Dioxide: 4.56 μg/m3
Sulphur Dioxide: 2.16 μg/m3
Ozone: 59.62 μg/m3

Astronomical

Sunrise: 5:24 AM
Sun Transit: 12:26 AM
Sunset: 7:30 PM
Daylight: 14 hrs 6 mins
Moonrise: 3:32 PM
Moon Transit: 9:48 PM
Moonset: 3:35 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.8%

Best Times for Fishing or Hunting

Major Periods

12:04 AM - 2:34 PM
9:18 PM - 11:48 PM

Minor Periods

3:02 PM - 4:32 PM
3:05 AM - 4:35 AM

Action Rating: 2 out of 5

Tuesday, April 28, 2026

Weather Forecast

Cloudy
59.2°F
36.4°F
48.4°F
69%
0 in
0%
0%
8.3 mph
1.2


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: 5:22 AM
Sun Transit: 12:26 AM
Sunset: 7:31 PM
Daylight: 14 hrs 9 mins
Moonrise: 4:40 PM
Moon Transit: 10:30 PM
Moonset: 3:52 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 89.6%

Best Times for Fishing or Hunting

Major Periods

12:46 AM - 3:16 PM
12:00 AM - 12:00 AM

Minor Periods

4:10 PM - 5:40 PM
3:22 AM - 4:52 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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