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

Current Water Temperature

35.4°F

Measurement Time: Wednesday, March 25, 2026, 7:45 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

39.4°F
Sunny
Sunny
30.7°F
37.3°F
36%
WNW 16.1 mph
18.5 mph
27.9°F
15.3°F
0 in
0%
6 mi
1022 mbar
2.9

Five Day Weather Forecast

Sunny
Wed
H: 40°F
L: 28°F
Moderate rain
Thu
H: 48°F
L: 30°F
Heavy rain
Fri
H: 37°F
L: 26°F
Partly Cloudy
Sat
H: 29°F
L: 13°F
Overcast
Sun
H: 34°F
L: 16°F

Air Quality

AQI: 1 - Good
PM2.5: 1.94 μg/m3
PM10: 2.54 μg/m3
Carbon Monoxide: 164.84 μg/m3
Nitrogen Dioxide: 1.14 μg/m3
Sulphur Dioxide: 1.14 μg/m3
Ozone: 102 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:00 AM
Sunset: 6:48 PM
Daylight: 12 hrs 25 mins
Moonrise: 10:17 AM
Moon Transit: 6:47 PM
Moonset: 2:18 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
6:17 PM - 8:47 PM

Minor Periods

9:47 AM - 11:17 AM
1:48 AM - 3:18 AM

Action Rating: 2 out of 5

Special Weather Statement issued March 25 at 7:32AM EDT by NWS Caribou ME

Effective: Wed March 25, 2026, 7:32 AM
Expires: Wed March 25, 2026, 8:45 AM

An area of heavy snow showers will accompany a cold front crossing the region this morning. Visibilities will drop quickly to a half mile or less with these heavy snow showers along with gusty winds. Roads could rapidly become snow covered and slippery. Localized snow accumulations up to an inch could occur. These snow showers will impact Route 1, Route 11, Route 161, northern portions of I-95 and other roads across northern Maine between 730 and 830 AM. Commuters this morning should be alert for these heavy snow showers, deteriorating visibilities and slippery road conditions. If you encounter these heavy snow showers slow down and maintain a safe distance between other vehicles.


Wednesday, March 25, 2026

Weather Forecast

Sunny
40.3°F
28.2°F
34.2°F
55%
0 in
0%
0%
16.1 mph
0.7


Air Quality

AQI: 1 - Good
PM2.5: 4.85 μg/m3
PM10: 6.46 μg/m3
Carbon Monoxide: 181.2 μg/m3
Nitrogen Dioxide: 2.4 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 99.16 μg/m3

Astronomical

Sunrise: 6:23 AM
Sun Transit: 12:00 AM
Sunset: 6:48 PM
Daylight: 12 hrs 25 mins
Moonrise: 10:17 AM
Moon Transit: 6:47 PM
Moonset: 2:18 AM
Moon Phase: First Quarter
Moon Illumination: 45.1%

Best Times for Fishing or Hunting

Major Periods

8:56 AM - 11:26 AM
6:17 PM - 8:47 PM

Minor Periods

9:47 AM - 11:17 AM
1:48 AM - 3:18 AM

Action Rating: 2 out of 5

Thursday, March 26, 2026

Weather Forecast

Moderate rain
47.7°F
30.2°F
40.1°F
88%
0.28 in
83%
4%
15.7 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 9.66 μg/m3
PM10: 12.72 μg/m3
Carbon Monoxide: 170.84 μg/m3
Nitrogen Dioxide: 3.23 μg/m3
Sulphur Dioxide: 2.04 μg/m3
Ozone: 98.4 μg/m3

Astronomical

Sunrise: 6:21 AM
Sun Transit: 12:00 AM
Sunset: 6:50 PM
Daylight: 12 hrs 29 mins
Moonrise: 11:29 AM
Moon Transit: 7:47 PM
Moonset: 3:12 AM
Moon Phase: First Quarter
Moon Illumination: 56.4%

Best Times for Fishing or Hunting

Major Periods

9:57 AM - 12:27 AM
7:17 PM - 9:47 PM

Minor Periods

10:59 AM - 12:29 AM
2:42 AM - 4:12 AM

Action Rating: 3 out of 5

Friday, March 27, 2026

Weather Forecast

Heavy rain
37.4°F
25.7°F
34.2°F
69%
1.85 in
86%
18%
13.9 mph
1.1


Air Quality

AQI: 1 - Good
PM2.5: 6.06 μg/m3
PM10: 6.83 μg/m3
Carbon Monoxide: 177.28 μg/m3
Nitrogen Dioxide: 2.78 μg/m3
Sulphur Dioxide: 1.77 μg/m3
Ozone: 89.84 μg/m3

Astronomical

Sunrise: 6:19 AM
Sun Transit: 12:00 AM
Sunset: 6:51 PM
Daylight: 12 hrs 32 mins
Moonrise: 12:47 AM
Moon Transit: 8:43 PM
Moonset: 3:54 AM
Moon Phase: First Quarter
Moon Illumination: 67.4%

Best Times for Fishing or Hunting

Major Periods

10:55 AM - 1:25 PM
8:13 PM - 10:43 PM

Minor Periods

12:17 AM - 1:47 PM
3:24 AM - 4:54 AM

Action Rating: 2 out of 5

Saturday, March 28, 2026

Weather Forecast

Partly Cloudy
28.9°F
12.6°F
20.5°F
44%
0 in
0%
0%
9.8 mph
0.9


Air Quality

AQI: 1 - Good
PM2.5: 2.21 μg/m3
PM10: 2.84 μg/m3
Carbon Monoxide: 163.08 μg/m3
Nitrogen Dioxide: 1.56 μg/m3
Sulphur Dioxide: 1.38 μg/m3
Ozone: 91.64 μg/m3

Astronomical

Sunrise: 6:17 AM
Sun Transit: 12:00 AM
Sunset: 6:52 PM
Daylight: 12 hrs 35 mins
Moonrise: 2:04 PM
Moon Transit: 9:35 PM
Moonset: 4:26 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 77.5%

Best Times for Fishing or Hunting

Major Periods

11:47 AM - 2:17 PM
9:05 PM - 11:35 PM

Minor Periods

1:34 PM - 3:04 PM
3:56 AM - 5:26 AM

Action Rating: 2 out of 5

Sunday, March 29, 2026

Weather Forecast

Overcast
33.8°F
16.4°F
25°F
51%
0 in
0%
0%
12.3 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 2.83 μg/m3
PM10: 3.66 μg/m3
Carbon Monoxide: 181.75 μg/m3
Nitrogen Dioxide: 3.33 μg/m3
Sulphur Dioxide: 1.67 μg/m3
Ozone: 81.38 μg/m3

Astronomical

Sunrise: 6:15 AM
Sun Transit: 12:00 AM
Sunset: 6:54 PM
Daylight: 12 hrs 38 mins
Moonrise: 3:19 PM
Moon Transit: 10:22 PM
Moonset: 4:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 86.2%

Best Times for Fishing or Hunting

Major Periods

12:36 AM - 3:06 PM
12:00 AM - 12:00 AM

Minor Periods

2:49 PM - 4:19 PM
4:20 AM - 5:50 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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