Suffolk County Climate and Average Weather
Climate of Suffolk County: average temperatures, rainfall and seasons month by month.
Climate in Suffolk County month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 35° | 21° | 4,3 in | ★☆☆☆☆ |
| February | 37° | 21° | 2,3 in | ★★☆☆☆ |
| March | 49° | 32° | 5,4 in | ★★☆☆☆ |
| April | 57° | 40° | 3,3 in | ★★★☆☆ |
| May | 68° | 51° | 5,1 in | ★★★★☆ |
| June | 80° | 62° | 2,6 in | ★★★★☆ |
| July | 84° | 67° | 4,9 in | ★★★★☆ |
| August | 80° | 64° | 2,8 in | ★★★★☆ |
| September | 72° | 57° | 2,1 in | ★★★★☆ |
| October | 64° | 48° | 2,9 in | ★★★★☆ |
| November | 51° | 36° | 2,3 in | ★★★☆☆ |
| December | 41° | 27° | 4,9 in | ★★☆☆☆ |
Climate type: Continental. Source: Open-Meteo archive (ERA5).
Recent extremes in Suffolk County
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
How Suffolk County compares with nearby places
Annual averages, and the difference against Suffolk County.
| Place | Distance | Avg temp | vs here | Annual rain |
|---|---|---|---|---|
| Area Code 617 | 0 mi | 51°F | about the same | 43 in |
| Boston | 0 mi | 51°F | about the same | 43 in |
| ZIP Code 02108 | 0 mi | 51°F | about the same | 43 in |
| Boston Logan International Airport | 3 mi | 52°F | about the same | 44 in |
| Providence | 41 mi | 52°F | about the same | 50 in |
Best time to visit Suffolk County
Go in June, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, February and December - expect the least comfortable mix of heat, cold or rain.
What this means for Suffolk County
Today is slightly warmer than average for October. The forecast high of 67°F is 3.4°F above the 64°F typical for this month.
A 10% chance means most of the area stays dry; a passing shower is possible but short.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 80°F.
What to pack, what to skip
- Sunglasses, a brimmed hat and SPF 30+
- Layers - the daily swing is 63°F, so mornings feel nothing like afternoons
- If your dates are flexible, avoid January, February and December - historically the least comfortable months here.
Summary
Suffolk County is a county in Massachusetts. Suffolk County is a county in the United States. It has a population of about 780.000.
Right now it is 63°F (17°C) in Suffolk County with overcast. It feels like 62°F. Today runs from 53°F to 67°F. Chance of precipitation is 10%. Sightseeing conditions score 9.4/10 - excellent - go now.
The best time to visit Suffolk County is June, August and September. The climate is continental. January, February and December tend to be the least comfortable months. July is the warmest month with average highs near 84°F, while February is the coldest with lows near 21°F.
The closest major airport is Boston Logan International Airport (BOS), about 3 mi away. Nearby highlights include Cape Cod National Seashore, Martha's Vineyard, Nantucket and Franconia Notch State Park.
In plain terms. Today is slightly warmer than average for October. The forecast high of 67°F is 3.4°F above the 64°F typical for this month. The best window to be outside is roughly 11 AM to 2 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in Suffolk County today at 9.4/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Suffolk County
| Type | County |
|---|---|
| State | Massachusetts |
| Country | United States |
| Continent | North America |
| Coordinates | 42°21′36.4″N 71°3′32″W (42.3601, -71.0589) |
| Population | 780.000 |
| Local time | 1:43 AM (UTC-04:00) |
| Best months | June, August and September |
| Climate | Continental |
Weather map for Suffolk County
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Explore Suffolk County
Every topic we hold for this place, and the same topic for the places around it.
Climate for related places
Frequently asked questions
Where is Suffolk County?
Suffolk County is a county in Massachusetts. Its coordinates are 42.3601, -71.0589. It lies in North America.
What is the weather like in Suffolk County right now?
It is currently 63°F (17°C) with overcast. Humidity is 76% and wind is 7 mph.
When is the best time to visit Suffolk County?
June, August and September offer the most comfortable conditions in Suffolk County, which has a continental climate. January, February and December are usually the hardest months for outdoor plans.
What time zone is Suffolk County in?
Suffolk County observes America/New_York (UTC-04:00). The local time is 1:43 AM.
How many people live in Suffolk County?
Suffolk County has a population of approximately 780.000.
What is the nearest airport to Suffolk County?
The closest airports are Boston Logan International Airport (BOS), 3 mi away, LaGuardia Airport (LGA), 182 mi away and John F. Kennedy International Airport (JFK), 184 mi away.
What are the top things to do in Suffolk County?
Popular options include Cape Cod National Seashore, Martha's Vineyard, Nantucket, Franconia Notch State Park, Mount Washington and Central Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated October 3, 2026 at 1:43 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
