Thacher Island - Rockport, Massachusetts
42° 38.21' N - 070° 34.52' W - 20 feet
Thursday September 4 17:20:00 2025
Station
Time: 17:20
Date: 04 Sep 2025
Latitude: 42° 38.21' N
Longitude: 070° 34.52' W
Elevation: 20 feet
Daylight: 13:00
Sun
Start civil twilight: 05:41
Sunrise: 06:10
Transit: 12:41
Sunset: 19:11
End civil twilight: 19:40
Azimuth: 261.1°
Altitude: 19.5°
Right ascension: 164.0°
Declination: 6.8°
Equinox: 09/22/2025 02:19:14 PM
Solstice: 12/21/2025 10:02:48 AM
Moon
Rise: 17:52
Transit: 22:33
Set: 02:09
Azimuth: 115.9°
Altitude: -5.7°
Right ascension: 310.0°
Declination: -22.9°
Full moon: 09/07/2025 02:08:46 PM
New moon: 09/21/2025 03:54:01 PM
Phase: Waxing Gibbous
90% full
Temperature (°F)
Current: 67.6
Day Average: 65.3
Day High: 67.7 at 17:11
Day Low: 61.5 at 06:31
Week Average: 66.7
Week High: 71.2 at 12:01:47 PM Tuesday
Week Low: 61.5 at 06:31:34 AM Thursday
Month Average: 66.7
Month High: 71.2 on 09/02/2025
Month Low: 61.5 on 09/04/2025
Year Average: 48.5
Year High: 92.2 on 06/24/2025
Year Low: 12.7 on 01/21/2025
All Time Average: 50.8
All Time High: 93.3 on 07/21/2019
All Time Low: -8.8 on 02/04/2023
Humidity (%)
Current: 89
Day Average: 89
Day High: 93 at 06:37
Day Low: 79 at 15:03
Week Average: 85
Week High: 96 at 06:45:20 AM Tuesday
Week Low: 68 at 03:47:12 PM Sunday
Month Average: 85
Month High: 96 on 09/02/2025
Month Low: 75 on 09/02/2025
Year Average: 77
Year High: 100 on 08/14/2025
Year Low: 24 on 03/28/2025
All Time Average: 79
All Time High: 100 on 08/23/2015
All Time Low: 1 on 06/11/2019
Dew Point (°F)
Current: 64.2
Day Average: 61.9
Day High: 64.3 at 17:17
Day Low: 59.2 at 06:31
Week Average: 61.9
Week High: 66.6 at 09:37:01 AM Tuesday
Week Low: 55.8 at 03:54:36 PM Sunday
Month Average: 61.9
Month High: 66.6 on 09/02/2025
Month Low: 58.7 on 09/03/2025
Year Average: 41.1
Year High: 75.8 on 06/24/2025
Year Low: -6.7 on 01/22/2025
All Time Average: 42.9
All Time High: 86.1 on 07/11/2023
All Time Low: -47.3 on 06/13/2019
Wind Chill (°F)
Current: 67.6
Day Low: 61.5 at 06:31
Week Low: 61.5 at 06:31:34 AM Thursday
Month Low: 61.5 on 09/04/2025
Year Low: -6.6 on 02/19/2025
All Time Low: -42.4 on 02/04/2023
Heat Index (°F)
Current: 68.2
Day High: 68.4 at 17:17
Week High: 71.8 at 12:01:47 PM Tuesday
Month High: 71.8 on 09/02/2025
Year High: 104.5 on 06/24/2025
All Time High: 112.3 on 07/11/2023
Barometer ( inHg)
Current: -
Day Average: -
Day High: - at  -
Day Low: - at  -
Week Average: -
Week High: - at  -
Week Low: - at  -
Month Average: -
Month High: - on  -
Month Low: - on  -
Year Average: -
Year High: - on  -
Year Low: - on  -
All Time Average: 29.885
All Time High: 30.822 on 11/25/2015
All Time Low: 27.272 on 07/11/2023
Wind ( mph)
Current: 22 S
Day Average: 11 SSW
Day High: 27 at 17:14
Week Average: 9 SSW
Week High: 27 at 05:14:21 PM Thursday
Month Average: 9 SSW
Month High: 27 on 09/04/2025
Year Average: 12 W
Year High: 105 on 03/29/2025
All Time Average: 11 NW
All Time High: 105 on 12/10/2024
Rain ( in - in/hr)
Rate: 0.00
Day: 0.00
Day High Rate: 655.35 at 00:01
Week: 0.00
Week High Rate: 655.35 at 12:00:01 AM Sunday
Month: 0.00
Month High Rate: 655.35 on 09/01/2025
Year: 15.79
Year High Rate: 655.35 on 05/20/2025
All Time High Rate: 655.35 on 02/23/2021