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

Current Water Temperature

34.2°F

Measurement Time: Sunday, March 1, 2026, 9:45 AM EST

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

24.3°F
Light freezing rain
Light freezing rain
13.7°F
24.5°F
49%
NNW 10.7 mph
12.9 mph
13.6°F
16.4°F
0 in
0%
6 mi
1021 mbar
0.5

Five Day Weather Forecast

Partly Cloudy
Sun
H: 28°F
L: 11°F
Sunny
Mon
H: 22°F
L: 2°F
Partly Cloudy
Tue
H: 40°F
L: 14°F
Mist
Wed
H: 44°F
L: 27°F
Light drizzle
Thu
H: 39°F
L: 21°F

Air Quality

AQI: 1 - Good
PM2.5: 2.84 μg/m3
PM10: 3.24 μg/m3
Carbon Monoxide: 174.84 μg/m3
Nitrogen Dioxide: 3.24 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 86 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 11:41 AM
Sunset: 5:16 PM
Daylight: 11 hrs 9 mins
Moonrise: 3:18 PM
Moon Transit: 10:40 PM
Moonset: 5:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

12:53 AM - 3:23 PM
12:00 AM - 12:00 AM

Minor Periods

2:48 PM - 4:18 PM
4:52 AM - 6:22 AM

Action Rating: 3 out of 5

Sunday, March 1, 2026

Weather Forecast

Partly Cloudy
28.2°F
10.9°F
24.7°F
70%
0 in
0%
6%
12.3 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 6.52 μg/m3
PM10: 8.66 μg/m3
Carbon Monoxide: 181.64 μg/m3
Nitrogen Dioxide: 2.24 μg/m3
Sulphur Dioxide: 1.7 μg/m3
Ozone: 89.4 μg/m3

Astronomical

Sunrise: 6:07 AM
Sun Transit: 11:41 AM
Sunset: 5:16 PM
Daylight: 11 hrs 9 mins
Moonrise: 3:18 PM
Moon Transit: 10:40 PM
Moonset: 5:22 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 95.8%

Best Times for Fishing or Hunting

Major Periods

12:53 AM - 3:23 PM
12:00 AM - 12:00 AM

Minor Periods

2:48 PM - 4:18 PM
4:52 AM - 6:22 AM

Action Rating: 3 out of 5

Monday, March 2, 2026

Weather Forecast

Sunny
21.9°F
2.1°F
11.7°F
48%
0 in
0%
0%
10.5 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 2.43 μg/m3
PM10: 2.9 μg/m3
Carbon Monoxide: 165.28 μg/m3
Nitrogen Dioxide: 2.21 μg/m3
Sulphur Dioxide: 1.54 μg/m3
Ozone: 86.32 μg/m3

Astronomical

Sunrise: 6:05 AM
Sun Transit: 11:41 AM
Sunset: 5:18 PM
Daylight: 11 hrs 12 mins
Moonrise: 4:35 PM
Moon Transit: 11:27 PM
Moonset: 5:45 AM
Moon Phase: Full
Moon Illumination: 99.1%

Best Times for Fishing or Hunting

Major Periods

1:41 PM - 4:11 PM
12:00 AM - 12:00 AM

Minor Periods

4:05 PM - 5:35 PM
5:15 AM - 6:45 AM

Action Rating: 4 out of 5

Tuesday, March 3, 2026

Weather Forecast

Partly Cloudy
40.1°F
14°F
26.5°F
58%
0 in
0%
0%
14.1 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 5.26 μg/m3
PM10: 6.58 μg/m3
Carbon Monoxide: 170.76 μg/m3
Nitrogen Dioxide: 4.89 μg/m3
Sulphur Dioxide: 2.27 μg/m3
Ozone: 87.04 μg/m3

Astronomical

Sunrise: 6:04 AM
Sun Transit: 11:41 AM
Sunset: 5:19 PM
Daylight: 11 hrs 15 mins
Moonrise: 5:47 PM
Moon Transit: 12:00 AM
Moonset: 6:05 AM
Moon Phase: Full
Moon Illumination: 100.0%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
2:27 PM - 4:57 PM

Minor Periods

5:17 PM - 6:47 PM
5:35 AM - 7:05 AM

Action Rating: 6 out of 5

Wednesday, March 4, 2026

Weather Forecast

Mist
43.9°F
26.6°F
31.9°F
90%
0 in
0%
0%
7.2 mph
0.6


Air Quality

AQI: 1 - Good
PM2.5: 4.6 μg/m3
PM10: 5.79 μg/m3
Carbon Monoxide: 162.84 μg/m3
Nitrogen Dioxide: 3.32 μg/m3
Sulphur Dioxide: 2.14 μg/m3
Ozone: 97.68 μg/m3

Astronomical

Sunrise: 6:02 AM
Sun Transit: 11:40 AM
Sunset: 5:20 PM
Daylight: 11 hrs 19 mins
Moonrise: 6:58 PM
Moon Transit: 12:11 AM
Moonset: 6:23 AM
Moon Phase: Full
Moon Illumination: 98.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
3:10 PM - 5:40 PM

Minor Periods

6:28 PM - 7:58 PM
5:53 AM - 7:23 AM

Action Rating: 5 out of 5

Thursday, March 5, 2026

Weather Forecast

Light drizzle
38.6°F
20.8°F
31.7°F
92%
0.08 in
85%
28%
11.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 5.92 μg/m3
PM10: 6.81 μg/m3
Carbon Monoxide: 207.9 μg/m3
Nitrogen Dioxide: 3.94 μg/m3
Sulphur Dioxide: 2.18 μg/m3
Ozone: 95.85 μg/m3

Astronomical

Sunrise: 6:00 AM
Sun Transit: 11:40 AM
Sunset: 5:22 PM
Daylight: 11 hrs 22 mins
Moonrise: 8:07 PM
Moon Transit: 12:55 AM
Moonset: 6:40 AM
Moon Phase: Full
Moon Illumination: 94.0%

Best Times for Fishing or Hunting

Major Periods

12:25 AM - 2:55 AM
3:53 PM - 6:23 PM

Minor Periods

7:37 PM - 9:07 PM
6:10 AM - 7:40 AM

Action Rating: 4 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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