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

Current Water Temperature

34.9°F

Measurement Time: Sunday, November 30, 2025, 9:45 AM EST

Temperature Locations

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Local Points of Interest

St. Stephen, NB

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St. Croix River

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

Elevation Above Sea Level: 62 feet / 19 meters

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 (74.0 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

31.6°F
Patchy rain nearby
Conditions: Patchy rain nearby
Humidity: 79%
Feels Like: 23.8°F
Wind: SSE 8.9 mph
Wind Gusts: 12.5 mph
Pressure: 30.32 in
Precipitation: 0 in
Cloud Cover: 0%
Visibility: 6 mi
UV Index: 0.1

Five Day Weather Forecast

Moderate or heavy snow showers
Sun
H: 36°F
L: 22°F
Heavy rain
Mon
H: 40°F
L: 23°F
Moderate or heavy snow showers
Tue
H: 37°F
L: 21°F
Moderate or heavy snow showers
Wed
H: 31°F
L: 21°F
Overcast
Thu
H: 37°F
L: 23°F

Air Quality

AQI: 1 - Good
PM2.5: 7.94 μg/m3
PM10: 12.14 μg/m3
Carbon Monoxide: 130.84 μg/m3
Nitrogen Dioxide: 1.84 μg/m3
Sulphur Dioxide: 1.24 μg/m3
Ozone: 83 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 11:18 AM
Sunset: 3:49 PM
Daylight: 9 hrs 2 mins
Moonrise: 1:00 PM
Moon Transit: 7:35 PM
Moonset: 1:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

9:49 AM - 12:19 AM
7:05 PM - 9:35 PM

Minor Periods

12:30 AM - 2:00 PM
12:40 AM - 2:10 AM

Action Rating: 2 out of 5

Winter Storm Watch issued November 30 at 12:49PM EST until December 3 at 7:00AM EST by NWS Caribou ME

Effective: Sun November 30, 2025, 12:49 PM
Expires: Mon December 1, 2025, 1:00 AM

* WHAT...Heavy snow possible. Total snow accumulations between 5 and 10 inches possible. * WHERE...Portions of Central Highlands, Coastal DownEast, Far Eastern, Interior DownEast, and Penobscot Valley Maine * WHEN...From Tuesday morning through Wednesday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the Tuesday evening and Wednesday morning commutes.

A Winter Storm Watch means there is potential for significant snow, sleet or ice accumulations that may impact travel. Continue to monitor the latest forecasts.
Sunday, November 30, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 31.1°F
Average Humidity: 81%
Chance of Rain: 91%
Wind: 18.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 2.46 μg/m3
PM10: 3.13 μg/m3
Carbon Monoxide: 142.28 μg/m3
Nitrogen Dioxide: 2.46 μg/m3
Sulphur Dioxide: 1.44 μg/m3
Ozone: 75.24 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 11:18 AM
Sunset: 3:49 PM
Daylight: 9 hrs 2 mins
Moonrise: 1:00 PM
Moon Transit: 7:35 PM
Moonset: 1:10 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 78.6%

Best Times for Fishing or Hunting

Major Periods

9:49 AM - 12:19 AM
7:05 PM - 9:35 PM

Minor Periods

12:30 AM - 2:00 PM
12:40 AM - 2:10 AM

Action Rating: 2 out of 5

Monday, December 1, 2025

Weather Forecast

Conditions: Heavy rain
Average Temperature: 35.5°F
Average Humidity: 73%
Chance of Rain: 85%
Wind: 16.8 mph
UV Index: 0.2

Air Quality

AQI: 1 - Good
PM2.5: 3.74 μg/m3
PM10: 5.17 μg/m3
Carbon Monoxide: 147.96 μg/m3
Nitrogen Dioxide: 2.66 μg/m3
Sulphur Dioxide: 2.07 μg/m3
Ozone: 76.2 μg/m3

Astronomical

Sunrise: 6:48 AM
Sun Transit: 11:18 AM
Sunset: 3:48 PM
Daylight: 9 hrs mins
Moonrise: 1:21 PM
Moon Transit: 8:27 PM
Moonset: 2:28 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 87.1%

Best Times for Fishing or Hunting

Major Periods

10:38 AM - 1:08 PM
7:57 PM - 10:27 PM

Minor Periods

12:51 AM - 2:21 PM
1:58 AM - 3:28 AM

Action Rating: 2 out of 5

Tuesday, December 2, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 28.8°F
Average Humidity: 71%
Chance of Rain: 84%
Wind: 10.3 mph
UV Index: 0.1

Air Quality

AQI: 1 - Good
PM2.5: 2.42 μg/m3
PM10: 2.96 μg/m3
Carbon Monoxide: 156.2 μg/m3
Nitrogen Dioxide: 3.41 μg/m3
Sulphur Dioxide: 1.73 μg/m3
Ozone: 72.2 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 11:18 AM
Sunset: 3:48 PM
Daylight: 8 hrs 59 mins
Moonrise: 1:47 PM
Moon Transit: 9:23 PM
Moonset: 3:50 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 93.7%

Best Times for Fishing or Hunting

Major Periods

11:33 AM - 2:03 PM
8:53 PM - 11:23 PM

Minor Periods

1:17 PM - 2:47 PM
3:20 AM - 4:50 AM

Action Rating: 2 out of 5

Wednesday, December 3, 2025

Weather Forecast

Conditions: Moderate or heavy snow showers
Average Temperature: 28.2°F
Average Humidity: 88%
Chance of Rain: 74%
Wind: 17 mph
UV Index: 0

Air Quality

AQI: 1 - Good
PM2.5: 3.52 μg/m3
PM10: 4.12 μg/m3
Carbon Monoxide: 159.6 μg/m3
Nitrogen Dioxide: 4.36 μg/m3
Sulphur Dioxide: 1.88 μg/m3
Ozone: 72.76 μg/m3

Astronomical

Sunrise: 6:51 AM
Sun Transit: 11:19 AM
Sunset: 3:48 PM
Daylight: 8 hrs 57 mins
Moonrise: 2:21 PM
Moon Transit: 10:24 PM
Moonset: 5:17 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 98.1%

Best Times for Fishing or Hunting

Major Periods

12:32 AM - 3:02 PM
12:00 AM - 12:00 AM

Minor Periods

1:51 PM - 3:21 PM
4:47 AM - 6:17 AM

Action Rating: 3 out of 5

Thursday, December 4, 2025

Weather Forecast

Conditions: Overcast
Average Temperature: 29.2°F
Average Humidity: 86%
Chance of Rain: 0%
Wind: 9.4 mph
UV Index: 1

Air Quality

AQI: 1 - Good
PM2.5: 3.64 μg/m3
PM10: 4.07 μg/m3
Carbon Monoxide: 168.83 μg/m3
Nitrogen Dioxide: 4.09 μg/m3
Sulphur Dioxide: 2.1 μg/m3
Ozone: 75.77 μg/m3

Astronomical

Sunrise: 6:52 AM
Sun Transit: 11:19 AM
Sunset: 3:47 PM
Daylight: 8 hrs 56 mins
Moonrise: 3:06 PM
Moon Transit: 11:30 PM
Moonset: 6:44 AM
Moon Phase: Full
Moon Illumination: 99.9%

Best Times for Fishing or Hunting

Major Periods

1:37 PM - 4:07 PM
12:00 AM - 12:00 AM

Minor Periods

2:36 PM - 4:06 PM
6:14 AM - 7:44 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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