Post Island, MA
Unincorporated community in Norfolk County, Massachusetts
Post Island is a small unincorporated community in Norfolk County, Massachusetts. It is 1.8 miles W of Quincy, the nearest town. Its ZIP code is 02191.
Post Island at a glance
- State
- Massachusetts
- County
- Norfolk County
- ZIP code
- 02191
- Nearest town
- Quincy (1.8 mi)
- Time zone
- America/New York
- Coordinates
- 42.2625, -70.9744
Weather in Post Island now
Loading the National Weather Service forecast…
Post Island weather by the hour
Post Island weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Post Island.
This week in Post Island
Sunrise, sunset and moon in Post Island
What is the weather usually like in Post Island?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 22°F average low
- 52.3 inprecipitation per year · 1,329 mm
- 50.9 insnowfall per year · 129 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Post Island: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station HINGHAM, MA US (USC00193624), adjusted for the elevation of Post Island.
Post Island weather month by month
Sunrise and sunset in Post Island through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:08 AM | 4:38 PM | 9 h 30 min |
| February | 6:38 AM | 5:17 PM | 10 h 39 min |
| March | 6:53 AM | 6:51 PM | 11 h 57 min |
| April | 6:01 AM | 7:26 PM | 13 h 25 min |
| May | 5:20 AM | 7:59 PM | 14 h 39 min |
| June | 5:05 AM | 8:23 PM | 15 h 18 min |
| July | 5:19 AM | 8:20 PM | 15 h 0 min |
| August | 5:50 AM | 7:46 PM | 13 h 56 min |
| September | 6:22 AM | 6:55 PM | 12 h 32 min |
| October | 6:55 AM | 6:03 PM | 11 h 8 min |
| November | 6:33 AM | 4:23 PM | 9 h 50 min |
| December | 7:04 AM | 4:14 PM | 9 h 9 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Post Island?
Post Island has a hot-summer humid continental climate. The warmest month is July, with an average high of 83°F (28°C), and the coldest is January, with average lows of 22°F (-6°C).
It gets about 52.3 inches (1,329 mm) of precipitation a year. The wettest month is March and the driest is July. Snow is common: about 51 inches fall in an average year.
The best time to visit Post Island is June to September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Post Island
The closest live webcam is Hingham › North: Hingham Shipyard Marinas, 2.8 miles E of Post Island.
Webcams: Windy.com. Distances in a straight line from Post Island.
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Map of Post Island, MA
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Post Island Street View
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Open in Google Maps ›Towns near Post Island
Other communities near Post Island
Questions about Post Island
Where is Post Island, MA?
Post Island is an unincorporated community in Norfolk County, Massachusetts, 1.8 miles W of Quincy.
What county is Post Island in?
Post Island is in Norfolk County, Massachusetts.
What is the ZIP code of Post Island, MA?
The ZIP code for Post Island is 02191.
What is the nearest town to Post Island?
Quincy, 1.8 miles away.
Are there webcams near Post Island?
Yes. The closest is Hingham › North: Hingham Shipyard Marinas, 2.8 miles away.
What is the hottest month in Post Island?
July, with an average high of 83°F (28°C).
What is the coldest month in Post Island?
January, with an average low of 22°F (-6°C).
How much does it rain in Post Island?
About 52.3 inches (1,329 mm) a year; the wettest month is March.
Does it snow in Post Island?
Yes, about 51 inches of snow fall in an average year.
When is the best time to visit Post Island?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Post Island have?
Hot-summer humid continental (Köppen Dfa).
Last updated: