Thacher Island - Rockport, Massachusetts
42° 38.21' N - 070° 34.52' W - 20 feet
Wednesday September 17 16:30:00 2025
Station
Time: 16:30
Date: 17 Sep 2025
Latitude: 42° 38.21' N
Longitude: 070° 34.52' W
Elevation: 20 feet
Daylight: 12:23
Sun
Start civil twilight: 05:55
Sunrise: 06:24
Transit: 12:36
Sunset: 18:48
End civil twilight: 19:16
Azimuth: 248.8°
Altitude: 24.1°
Right ascension: 175.6°
Declination: 1.9°
Equinox: 09/22/2025 02:19:14 PM
Solstice: 12/21/2025 10:02:48 AM
Moon
Rise: 01:33
Transit: 09:26
Set: 17:06
Azimuth: 293.8°
Altitude: 5.1°
Right ascension: 131.0°
Declination: 20.8°
New moon: 09/21/2025 03:54:01 PM
Full moon: 10/06/2025 11:47:30 PM
Phase: Waning Crescent
16% full
Temperature (°F)
Current: 65.7
Day Average: 65.3
Day High: 68.4 at 12:31
Day Low: 62.5 at 06:53
Week Average: 65.5
Week High: 70.9 at 10:28:52 AM Sunday
Week Low: 59.4 at 07:35:56 AM Tuesday
Month Average: 65.4
Month High: 74.3 on 09/11/2025
Month Low: 55.8 on 09/08/2025
Year Average: 49.0
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: 86
Day Average: 88
Day High: 94 at 06:53
Day Low: 85 at 12:34
Week Average: 87
Week High: 97 at 06:46:36 AM Tuesday
Week Low: 73 at 12:32:05 PM Sunday
Month Average: 85
Month High: 97 on 09/06/2025
Month Low: 53 on 09/11/2025
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: 61.4
Day Average: 61.8
Day High: 64.2 at 12:26
Day Low: 60.1 at 09:06
Week Average: 61.6
Week High: 64.9 at 09:55:54 AM Sunday
Week Low: 58.3 at 06:32:13 PM Tuesday
Month Average: 61.6
Month High: 68.2 on 09/06/2025
Month Low: 51.7 on 09/08/2025
Year Average: 41.7
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: 65.7
Day Low: 62.5 at 06:53
Week Low: 59.4 at 07:35:56 AM Tuesday
Month Low: 55.8 on 09/08/2025
Year Low: -6.6 on 02/19/2025
All Time Low: -42.4 on 02/04/2023
Heat Index (°F)
Current: 66.0
Day High: 69.0 at 12:31
Week High: 71.4 at 12:17:37 PM Sunday
Month High: 74.1 on 09/11/2025
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: 6 ENE
Day Average: 7 ENE
Day High: 15 at 08:10
Week Average: 6 NE
Week High: 19 at 06:40:00 AM Monday
Month Average: 10 S
Month High: 38 on 09/06/2025
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 00:00
Week: 0.00
Week High Rate: 655.35 at 12:00:04 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