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

Current Water Temperature

35.6°F

Measurement Time: Saturday, March 14, 2026, 6:45 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
27.9°F
31.4°F
92%
NW 3.6 mph
7.5 mph
23.5°F
27.5°F
0 in
0%
0 mi
1015 mbar
0

Five Day Weather Forecast

Moderate rain
Sat
H: 42°F
L: 30°F
Sunny
Sun
H: 43°F
L: 24°F
Heavy rain
Mon
H: 46°F
L: 30°F
Heavy rain
Tue
H: 52°F
L: 24°F
Sunny
Wed
H: 29°F
L: 17°F

Air Quality

AQI: 1 - Good
PM2.5: 2.04 μg/m3
PM10: 2.44 μg/m3
Carbon Monoxide: 160.84 μg/m3
Nitrogen Dioxide: 2.34 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 91 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:00 AM
Sunset: 6:34 PM
Daylight: 11 hrs 51 mins
Moonrise: 4:48 AM
Moon Transit: 9:07 AM
Moonset: 1:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

1:04 PM - 2:34 PM
4:18 AM - 5:48 AM

Action Rating: 2 out of 5

Saturday, March 14, 2026

Weather Forecast

Moderate rain
41.7°F
29.5°F
34.4°F
88%
0.32 in
79%
13%
12.5 mph
0.2


Air Quality

AQI: 1 - Good
PM2.5: 4.29 μg/m3
PM10: 6.28 μg/m3
Carbon Monoxide: 161.08 μg/m3
Nitrogen Dioxide: 2.08 μg/m3
Sulphur Dioxide: 1.34 μg/m3
Ozone: 96.68 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:00 AM
Sunset: 6:34 PM
Daylight: 11 hrs 51 mins
Moonrise: 4:48 AM
Moon Transit: 9:07 AM
Moonset: 1:34 PM
Moon Phase: Waning Crescent
Moon Illumination: 8.9%

Best Times for Fishing or Hunting

Major Periods

8:37 AM - 11:07 AM
12:00 AM - 12:00 AM

Minor Periods

1:04 PM - 2:34 PM
4:18 AM - 5:48 AM

Action Rating: 2 out of 5

Sunday, March 15, 2026

Weather Forecast

Sunny
42.8°F
23.9°F
32.8°F
63%
0 in
0%
0%
10.5 mph
0.8


Air Quality

AQI: 1 - Good
PM2.5: 2.42 μg/m3
PM10: 3.02 μg/m3
Carbon Monoxide: 169.8 μg/m3
Nitrogen Dioxide: 2.37 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 93.8 μg/m3

Astronomical

Sunrise: 6:42 AM
Sun Transit: 12:00 AM
Sunset: 6:36 PM
Daylight: 11 hrs 54 mins
Moonrise: 5:16 AM
Moon Transit: 9:56 AM
Moonset: 2:47 PM
Moon Phase: Waning Crescent
Moon Illumination: 3.6%

Best Times for Fishing or Hunting

Major Periods

12:10 AM - 2:40 AM
9:26 AM - 11:56 AM

Minor Periods

2:17 PM - 3:47 PM
4:46 AM - 6:16 AM

Action Rating: 3 out of 5

Monday, March 16, 2026

Weather Forecast

Heavy rain
46.4°F
30°F
39.5°F
90%
2.75 in
87%
0%
21.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 5.86 μg/m3
PM10: 8.33 μg/m3
Carbon Monoxide: 164.08 μg/m3
Nitrogen Dioxide: 2.28 μg/m3
Sulphur Dioxide: 1.31 μg/m3
Ozone: 95.16 μg/m3

Astronomical

Sunrise: 6:40 AM
Sun Transit: 12:00 AM
Sunset: 6:37 PM
Daylight: 11 hrs 57 mins
Moonrise: 5:40 AM
Moon Transit: 10:44 AM
Moonset: 4:00 PM
Moon Phase: Waning Crescent
Moon Illumination: 0.6%

Best Times for Fishing or Hunting

Major Periods

12:58 AM - 3:28 AM
10:14 AM - 12:44 AM

Minor Periods

3:30 PM - 5:00 PM
5:10 AM - 6:40 AM

Action Rating: 3 out of 5

Tuesday, March 17, 2026

Weather Forecast

Heavy rain
52.3°F
24.1°F
44.8°F
79%
2.89 in
87%
0%
24.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 3.27 μg/m3
PM10: 4.46 μg/m3
Carbon Monoxide: 134.64 μg/m3
Nitrogen Dioxide: 1.83 μg/m3
Sulphur Dioxide: 1.32 μg/m3
Ozone: 82.52 μg/m3

Astronomical

Sunrise: 6:38 AM
Sun Transit: 12:00 AM
Sunset: 6:38 PM
Daylight: 12 hrs mins
Moonrise: 6:00 AM
Moon Transit: 11:30 AM
Moonset: 5:13 PM
Moon Phase: New
Moon Illumination: 0.1%

Best Times for Fishing or Hunting

Major Periods

1:45 AM - 4:15 AM
11:00 AM - 1:30 PM

Minor Periods

4:43 PM - 6:13 PM
5:30 AM - 7:00 AM

Action Rating: 5 out of 5

Wednesday, March 18, 2026

Weather Forecast

Sunny
29°F
17.4°F
23°F
38%
0 in
0%
0%
15.2 mph
2


Air Quality

AQI: 1 - Good
PM2.5: 1.91 μg/m3
PM10: 1.94 μg/m3
Carbon Monoxide: 183.27 μg/m3
Nitrogen Dioxide: 2.36 μg/m3
Sulphur Dioxide: 1.65 μg/m3
Ozone: 84.38 μg/m3

Astronomical

Sunrise: 6:36 AM
Sun Transit: 12:00 AM
Sunset: 6:39 PM
Daylight: 12 hrs 3 mins
Moonrise: 6:20 AM
Moon Transit: 12:00 AM
Moonset: 6:29 PM
Moon Phase: New
Moon Illumination: 2.2%

Best Times for Fishing or Hunting

Major Periods

12:00 AM - 12:00 AM
12:00 AM - 12:00 AM

Minor Periods

5:59 PM - 7:29 PM
5:50 AM - 7:20 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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