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

Current Water Temperature

32.0°F

Measurement Time: Sunday, June 21, 2026, 6:22 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

57.7°F
Clear
Clear
57.3°F
58.9°F
97%
ESE 4.9 mph
10.3 mph
58°F
54.8°F
0 in
0%
0 mi
1013 mbar
0

Five Day Weather Forecast

Sunny
Sun
H: 74°F
L: 51°F
Sunny
Mon
H: 69°F
L: 51°F
Heavy rain
Tue
H: 55°F
L: 50°F
Moderate rain
Wed
H: 74°F
L: 54°F
Patchy rain nearby
Thu
H: 74°F
L: 52°F

Air Quality

AQI: 1 - Good
PM2.5: 1.4 μg/m3
PM10: 1.5 μg/m3
Carbon Monoxide: 118 μg/m3
Nitrogen Dioxide: 2.2 μg/m3
Sulphur Dioxide: 1.2 μg/m3
Ozone: 60 μg/m3

Astronomical

Sunrise: 4:42 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 39 mins
Moonrise: 12:22 AM
Moon Transit: 6:27 PM
Moonset: 12:03 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

8:43 AM - 11:13 AM
5:57 PM - 8:27 PM

Minor Periods

11:52 AM - 1:22 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Flood Advisory issued June 21 at 4:25PM EDT until June 21 at 10:30PM EDT by NWS Caribou ME

Effective: Sun June 21, 2026, 4:25 PM
Expires: Sun June 21, 2026, 10:30 PM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Maine, including the following county, Washington. * WHEN...Until 1030 PM EDT Sunday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 425 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 0.5 to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Pembroke, Alexander, Dennysville, Charlotte, Cooper, Crawford, Wesley, Big Lake and Edmunds. - For flood safety visit www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.


Flood Advisory issued June 21 at 4:13PM EDT until June 21 at 10:15PM EDT by NWS Caribou ME

Effective: Sun June 21, 2026, 4:13 PM
Expires: Sun June 21, 2026, 10:15 PM

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Maine, including the following county, Washington. * WHEN...Until 1015 PM EDT Sunday. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 413 PM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Wesley. - For flood safety visit www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Flooding is occurring or is imminent. It is important to know where you are relative to streams, rivers, or creeks which can become killers in heavy rains. Campers and hikers should avoid streams or creeks.


Sunday, June 21, 2026

Weather Forecast

Sunny
73.9°F
51.4°F
62.8°F
75%
0 in
10%
0%
5.1 mph
5.8


Air Quality

AQI: 1 - Good
PM2.5: 2.58 μg/m3
PM10: 2.66 μg/m3
Carbon Monoxide: 104.13 μg/m3
Nitrogen Dioxide: 1.01 μg/m3
Sulphur Dioxide: 0.69 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 4:42 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 39 mins
Moonrise: 12:22 AM
Moon Transit: 6:27 PM
Moonset: 12:03 AM
Moon Phase: First Quarter
Moon Illumination: 38.5%

Best Times for Fishing or Hunting

Major Periods

8:43 AM - 11:13 AM
5:57 PM - 8:27 PM

Minor Periods

11:52 AM - 1:22 PM
12:00 AM - 12:00 AM

Action Rating: 3 out of 5

Monday, June 22, 2026

Weather Forecast

Sunny
69.4°F
50.8°F
59.3°F
78%
0 in
12%
0%
9.2 mph
7.5


Air Quality

AQI: 1 - Good
PM2.5: 3.9 μg/m3
PM10: 4.7 μg/m3
Carbon Monoxide: 110.13 μg/m3
Nitrogen Dioxide: 1.58 μg/m3
Sulphur Dioxide: 1.11 μg/m3
Ozone: 66.58 μg/m3

Astronomical

Sunrise: 4:42 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 38 mins
Moonrise: 1:30 PM
Moon Transit: 7:10 PM
Moonset: 12:21 AM
Moon Phase: First Quarter
Moon Illumination: 49.7%

Best Times for Fishing or Hunting

Major Periods

9:25 AM - 11:55 AM
6:40 PM - 9:10 PM

Minor Periods

1:00 PM - 2:30 PM
12:00 AM - 12:00 AM

Action Rating: 2 out of 5

Tuesday, June 23, 2026

Weather Forecast

Heavy rain
55.2°F
50.2°F
54.1°F
99%
1.33 in
96%
0%
6 mph
0.3


Air Quality

AQI: 1 - Good
PM2.5: 2.32 μg/m3
PM10: 2.73 μg/m3
Carbon Monoxide: 112.19 μg/m3
Nitrogen Dioxide: 1.1 μg/m3
Sulphur Dioxide: 0.67 μg/m3
Ozone: 83.21 μg/m3

Astronomical

Sunrise: 4:43 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 38 mins
Moonrise: 2:38 PM
Moon Transit: 7:52 PM
Moonset: 12:39 AM
Moon Phase: First Quarter
Moon Illumination: 61.0%

Best Times for Fishing or Hunting

Major Periods

10:08 AM - 12:38 AM
7:22 PM - 9:52 PM

Minor Periods

2:08 PM - 3:38 PM
12:09 AM - 1:39 AM

Action Rating: 2 out of 5

Wednesday, June 24, 2026

Weather Forecast

Moderate rain
73.7°F
54.1°F
62.5°F
86%
0.35 in
85%
0%
6.9 mph
6.3


Air Quality

AQI: 1 - Good
PM2.5: 1.3 μg/m3
PM10: 1.32 μg/m3
Carbon Monoxide: 132.92 μg/m3
Nitrogen Dioxide: 1.19 μg/m3
Sulphur Dioxide: 0.57 μg/m3
Ozone: 57.92 μg/m3

Astronomical

Sunrise: 4:43 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 38 mins
Moonrise: 3:45 PM
Moon Transit: 8:36 PM
Moonset: 12:58 AM
Moon Phase: First Quarter
Moon Illumination: 71.7%

Best Times for Fishing or Hunting

Major Periods

10:51 AM - 1:21 PM
8:06 PM - 10:36 PM

Minor Periods

3:15 PM - 4:45 PM
12:28 AM - 1:58 AM

Action Rating: 3 out of 5

Thursday, June 25, 2026

Weather Forecast

Patchy rain nearby
74.2°F
51.6°F
60.7°F
83%
0 in
28%
0%
7.4 mph
7


Air Quality

AQI: 1 - Good
PM2.5: 1.23 μg/m3
PM10: 1.23 μg/m3
Carbon Monoxide: 138.78 μg/m3
Nitrogen Dioxide: 2.48 μg/m3
Sulphur Dioxide: 0.89 μg/m3
Ozone: 45.67 μg/m3

Astronomical

Sunrise: 4:43 AM
Sun Transit: 12:31 AM
Sunset: 8:21 PM
Daylight: 15 hrs 38 mins
Moonrise: 4:52 PM
Moon Transit: 9:22 PM
Moonset: 1:19 AM
Moon Phase: Waxing Gibbous
Moon Illumination: 81.2%

Best Times for Fishing or Hunting

Major Periods

11:36 AM - 2:06 PM
8:52 PM - 11:22 PM

Minor Periods

4:22 PM - 5:52 PM
12:49 AM - 2:19 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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