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Williamstown MA Weather - Overcast - 62°F
Overcast
62°F
Updated 3:12 pm
Feels Like 56°F
Humidity 62%
Wind VRB 6 mph
Barometer  30.15 in
Dew Point 49°F
Williamstown MA Weather - Overcast - 17°C
Overcast
17°C
Updated 3:12 pm
Feels Like 13°C
Humidity 62%
Wind VRB 10 km/h
Barometer  102 kPa
Dew Point 9°C
Williamstown, MA Weather and Current Conditionswilliamstown ma weather forecast

Williamstown, MA Weather Forecast

Williamstown Massachusetts WeatherWilliamstown, Massachusetts Weather Weather Forecast
14 day API forecast for Williamstown, Massachusetts. Note. The 7-day weather forecast for Williamstown, MA is the most reliable and accurate forecast. This model should only be used as a likely scenario. It is difficult to predict weather more than 7 days in advance.
Williamstown, MA Weather Forecast Dated: 312 PM Mon Sep 21 2026
Expect a cool pattern with more clouds than sun and occasional showers over the coming period. generally humid conditions and a stable pattern will dominate.

Monday, September 21, 2026

Mid-Morning
Williamstown Weather - 2026-09-21 - Morning - Partly Cloudy
50°F 10°C
Partly Cloudy
Mid-Afternoon
Williamstown Weather - 2026-09-21 - Afternoon - Partly Cloudy
61°F 16°C
Partly Cloudy
Early-Evening
Williamstown Weather - 2026-09-21 - Evening - Overcast
52°F 11°C
Overcast
Refreshing around 61°F 16°C, cloudy in the morning, partly cloudy in the afternoon, and overcast this evening, with steady humidity and steady pressure.

Tuesday, September 22, 2026

Mid-Morning
Williamstown Weather - 2026-09-22 - Morning - Overcast
48°F 9°C
Overcast
Mid-Afternoon
Williamstown Weather - 2026-09-22 - Afternoon - Overcast
58°F 15°C
Overcast
Early-Evening
Williamstown Weather - 2026-09-22 - Evening - Overcast
51°F 10°C
Overcast
Mildly cool near 58°F 15°C, overcast throughout the day, with steady humidity and steady pressure.

Wednesday, September 23, 2026

Mid-Morning
Williamstown Weather - 2026-09-23 - Morning - Sunny
49°F 9°C
Sunny
Mid-Afternoon
Williamstown Weather - 2026-09-23 - Afternoon - Sunny
59°F 15°C
Sunny
Early-Evening
Williamstown Weather - 2026-09-23 - Evening - Sunny
49°F 10°C
Sunny
Comfortable at 59°F 15°C, sunny throughout the day, with increasing humidity and steady pressure. Winds turning from the ENE to the E at 6 mph 10 km/h.

Thursday, September 24, 2026

Mid-Morning
Williamstown Weather - 2026-09-24 - Morning - Sunny
50°F 10°C
Sunny
Mid-Afternoon
Williamstown Weather - 2026-09-24 - Afternoon - Sunny
61°F 16°C
Sunny
Early-Evening
Williamstown Weather - 2026-09-24 - Evening - Sunny
52°F 11°C
Sunny
Cool with a high near 61°F 16°C, sunny through the afternoon, turning partly cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the NE to the E at 4 mph 7 km/h.

Friday, September 25, 2026

Mid-Morning
Williamstown Weather - 2026-09-25 - Morning - Partly Cloudy
49°F 9°C
Partly Cloudy
Mid-Afternoon
Williamstown Weather - 2026-09-25 - Afternoon - Scattered Showers
48°F 9°C
Scattered Showers
Early-Evening
Williamstown Weather - 2026-09-25 - Evening - Overcast
50°F 10°C
Overcast
Brisk around 48°F 9°C, scattered downpours possible, with increasing humidity and barometric pressure falling.

Saturday, September 26, 2026

Mid-Morning
Williamstown Weather - 2026-09-26 - Morning - Overcast
49°F 9°C
Overcast
Mid-Afternoon
Williamstown Weather - 2026-09-26 - Afternoon - Overcast
53°F 11°C
Overcast
Early-Evening
Williamstown Weather - 2026-09-26 - Evening - Overcast
53°F 12°C
Overcast
Cool and brisk at 53°F 11°C, overcast throughout the day, with lower humidity and steady pressure.

Sunday, September 27, 2026

Mid-Morning
Williamstown Weather - 2026-09-27 - Morning - Sunny
46°F 8°C
Sunny
Mid-Afternoon
Williamstown Weather - 2026-09-27 - Afternoon - Overcast
56°F 13°C
Overcast
Early-Evening
Williamstown Weather - 2026-09-27 - Evening - Cloudy
47°F 8°C
Cloudy
Chilly near 56°F 13°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with increasing humidity and steady pressure. Winds moving from the ENE to the E at 6 mph 9 km/h.

Monday, September 28, 2026

Mid-Morning
Williamstown Weather - 2026-09-28 - Morning - Sunny
47°F 9°C
Sunny
Mid-Afternoon
Williamstown Weather - 2026-09-28 - Afternoon - Sunny
57°F 14°C
Sunny
Early-Evening
Williamstown Weather - 2026-09-28 - Evening - Partly Cloudy
52°F 11°C
Partly Cloudy
Crisp with a high near 57°F 14°C, cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds out of the E at 11 mph 18 km/h.

Tuesday, September 29, 2026

Mid-Morning
Williamstown Weather - 2026-09-29 - Morning - Drizzle
50°F 10°C
Drizzle
Mid-Afternoon
Williamstown Weather - 2026-09-29 - Afternoon - Drizzle
52°F 11°C
Drizzle
Early-Evening
Williamstown Weather - 2026-09-29 - Evening - Fog
51°F 11°C
Fog
Brisk around 52°F 11°C, showers through the afternoon, tapering off by evening, with steady humidity and barometric pressure falling.

Wednesday, September 30, 2026

Mid-Morning
Williamstown Weather - 2026-09-30 - Morning - Light Fog
56°F 14°C
Light Fog
Mid-Afternoon
Williamstown Weather - 2026-09-30 - Afternoon - Fog
59°F 15°C
Fog
Early-Evening
Williamstown Weather - 2026-09-30 - Evening - Fog
56°F 14°C
Fog
Mildly cool near 59°F 15°C, overcast throughout the day, with steady humidity and steady pressure.

Thursday, October 1, 2026

Mid-Morning
Williamstown Weather - 2026-10-01 - Morning - Sunny
54°F 12°C
Sunny
Mid-Afternoon
Williamstown Weather - 2026-10-01 - Afternoon - Overcast
65°F 19°C
Overcast
Early-Evening
Williamstown Weather - 2026-10-01 - Evening - Overcast
57°F 14°C
Overcast
Comfortable at 65°F 19°C, cloudy in the morning, becoming overcast through the afternoon and evening, with steady humidity and steady pressure.

Friday, October 2, 2026

Mid-Morning
Williamstown Weather - 2026-10-02 - Morning - Overcast
55°F 13°C
Overcast
Mid-Afternoon
Williamstown Weather - 2026-10-02 - Afternoon - Overcast
62°F 16°C
Overcast
Early-Evening
Williamstown Weather - 2026-10-02 - Evening - Overcast
57°F 14°C
Overcast
Cool with a high near 62°F 16°C, overcast throughout the day, with steady humidity and steady pressure.

Saturday, October 3, 2026

Mid-Morning
Williamstown Weather - 2026-10-03 - Morning - Overcast
54°F 12°C
Overcast
Mid-Afternoon
Williamstown Weather - 2026-10-03 - Afternoon - Sunny
64°F 18°C
Sunny
Early-Evening
Williamstown Weather - 2026-10-03 - Evening - Overcast
60°F 16°C
Overcast
Refreshing around 64°F 18°C, overcast in the morning, sunny in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling.

Sunday, October 4, 2026

Mid-Morning
Williamstown Weather - 2026-10-04 - Morning - Scattered Showers
59°F 15°C
Scattered Showers
Mid-Afternoon
Williamstown Weather - 2026-10-04 - Afternoon - Scattered Showers
63°F 17°C
Scattered Showers
Early-Evening
Williamstown Weather - 2026-10-04 - Evening - Scattered Showers
60°F 15°C
Scattered Showers
Mildly cool near 63°F 17°C, scattered downpours possible, with steady humidity and steady pressure.

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Weather by the Numbers

Mon, 21st
Williamstown MA Weather - Monday, Sep 21, 2026 - Overcast
Hi: 62°F 16°C
Lo: 47°F 8°C
Sunrise 06:39 AM
Sunset 06:52 PM
Wind N 6 mph9 km/h
Dew Point 45°F7°C
uv Index 5
Barometric Pressure 30.12 in1020 mb
POP 13% *
Humidity 57%
Tue, 22nd
Williamstown MA Weather - Tuesday, Sep 22, 2026 - Overcast
Hi: 58°F 15°C
Lo: 44°F 7°C
Sunrise 06:40 AM
Sunset 06:50 PM
Wind E 7 mph11 km/h
Dew Point 38°F3°C
uv Index 3
Barometric Pressure 30.36 in1028 mb
POP 12% *
Humidity 50%
Wed, 23rd
Williamstown MA Weather - Wednesday, Sep 23, 2026 - Sunny
Hi: 59°F 15°C
Lo: 40°F 5°C
Sunrise 06:41 AM
Sunset 06:48 PM
Wind E 11 mph17 km/h
Dew Point 36°F2°C
uv Index 3
Barometric Pressure 30.53 in1034 mb
POP 2% *
Humidity 48%
Thu, 24th
Williamstown MA Weather - Thursday, Sep 24, 2026 - Sunny
Hi: 61°F 16°C
Lo: 40°F 4°C
Sunrise 06:42 AM
Sunset 06:46 PM
Wind ENE 9 mph15 km/h
Dew Point 34°F1°C
uv Index 5
Barometric Pressure 30.47 in1032 mb
POP 1% *
Humidity 41%
Fri, 25th
Williamstown MA Weather - Friday, Sep 25, 2026 - Sunny
Hi: 62°F 17°C
Lo: 43°F 6°C
Sunrise 06:43 AM
Sunset 06:44 PM
Wind NNW 7 mph11 km/h
Dew Point 37°F3°C
uv Index 5
Barometric Pressure 30.18 in1022 mb
POP 1% *
Humidity 41%
Sat, 26th
Williamstown MA Weather - Saturday, Sep 26, 2026 - Patchy Rain Nearby
Hi: 53°F 12°C
Lo: 48°F 9°C
Sunrise 06:44 AM
Sunset 06:43 PM
Wind NW 5 mph8 km/h
Dew Point 45°F7°C
uv Index 2
Barometric Pressure 30 in1016 mb
POP 26% *
Humidity 84%
Sun, 27th
Williamstown MA Weather - Sunday, Sep 27, 2026 - Overcast
Hi: 57°F 14°C
Lo: 40°F 4°C
Sunrise 06:45 AM
Sunset 06:41 PM
Wind ENE 13 mph21 km/h
Dew Point 30°F-1°C
uv Index 3
Barometric Pressure 30.36 in1028 mb
POP 3% *
Humidity 41%
Mon, 28th
Williamstown MA Weather - Monday, Sep 28, 2026 - Sunny
Hi: 57°F 14°C
Lo: 40°F 5°C
Sunrise 06:47 AM
Sunset 06:39 PM
Wind E 12 mph20 km/h
Dew Point 40°F4°C
uv Index 4
Barometric Pressure 30.45 in1031 mb
POP 4% *
Humidity 61%
Tue, 29th
Williamstown MA Weather - Tuesday, Sep 29, 2026 - Light Rain
Hi: 52°F 11°C
Lo: 47°F 9°C
Sunrise 06:48 AM
Sunset 06:37 PM
Wind E 5 mph9 km/h
Dew Point 51°F10°C
uv Index 3
Barometric Pressure 30.15 in1021 mb
POP 80% *
Humidity 97%
Wed, 30th
Williamstown MA Weather - Wednesday, Sep 30, 2026 - Patchy Rain Nearby
Hi: 61°F 16°C
Lo: 53°F 12°C
Sunrise 06:49 AM
Sunset 06:35 PM
Wind SSE 2 mph3 km/h
Dew Point 57°F14°C
uv Index 3
Barometric Pressure 30.03 in1017 mb
POP 35% *
Humidity 95%
Thu, 1st
Williamstown MA Weather - Thursday, Oct 1, 2026 - Overcast
Hi: 67°F 19°C
Lo: 50°F 10°C
Sunrise 06:50 AM
Sunset 06:34 PM
Wind NNE 4 mph6 km/h
Dew Point 42°F6°C
uv Index 4
Barometric Pressure 30.24 in1024 mb
POP 3% *
Humidity 47%
Fri, 2nd
Williamstown MA Weather - Friday, Oct 2, 2026 - Overcast
Hi: 63°F 17°C
Lo: 49°F 9°C
Sunrise 06:51 AM
Sunset 06:32 PM
Wind SE 4 mph7 km/h
Dew Point 44°F7°C
uv Index 4
Barometric Pressure 30.36 in1028 mb
POP 13% *
Humidity 53%
Sat, 3rd
Williamstown MA Weather - Saturday, Oct 3, 2026 - Sunny
Hi: 65°F 18°C
Lo: 50°F 10°C
Sunrise 06:52 AM
Sunset 06:30 PM
Wind WSW 3 mph5 km/h
Dew Point 48°F9°C
uv Index 5
Barometric Pressure 30.15 in1021 mb
POP 10% *
Humidity 61%
Sun, 4th
Williamstown MA Weather - Sunday, Oct 4, 2026 - Light Rain Shower
Hi: 64°F 18°C
Lo: 57°F 14°C
Sunrise 06:53 AM
Sunset 06:28 PM
Wind WNW 4 mph6 km/h
Dew Point 57°F14°C
uv Index 4
Barometric Pressure 30.09 in1019 mb
POP 27% *
Humidity 83%
* POP = Probability of Precipitation. Data for 12:00 PM.