Mill Valley, Massachusetts Weather
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Weather Forecast for Mill Valley, Massachusetts : Hampshire County
Issued: 2:30 am EDT Oct 19, 2025 Latitude: 42.3556458 Longitude: -72.5203651 View on Google Maps

MouseOver for Detail Forecast
This Afternoon Tonight Monday Tuesday Wednesday Thursday Friday Saturday
Partly Sunny on This Afternoon 30% chance of rain on Tonight 90% chance of thunderstorms on Monday Sunny on Tuesday 70% chance of rain on Wednesday Mostly Sunny on Thursday Mostly Sunny on Friday Mostly Sunny on Saturday
High: 72°F Low: 55°F High: 66°F High: 65°F High: 63°F High: 58°F High: 57°F High: 56°F
Low: 44°F Low: 46°F Low: 38°F Low: 36°F Low: 35°F  
Partly Sunny Rain Thunderstorms Sunny Rain Mostly Sunny Mostly Sunny Mostly Sunny
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Partly Sunny on This Afternoon This Afternoon... Partly sunny, with a high near 72. South wind 11 to 13 mph.
30% chance of rain Tonight Tonight... A chance of showers, mainly after 4am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 55. Southeast wind 10 to 13 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
90% chance of thunderstorms Monday Monday... Showers and possibly a thunderstorm before 2pm, then showers likely. Some of the storms could produce heavy rainfall. Patchy fog before 2pm. High near 66. Southeast wind 11 to 15 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
40% chance of rain Monday Night Monday Night... A chance of showers, mainly before 2am. Mostly cloudy, with a low around 44. West wind 6 to 9 mph, with gusts as high as 24 mph. Chance of precipitation is 40%. New precipitation amounts between a quarter and half of an inch possible.
Sunny on Tuesday Tuesday... Sunny, with a high near 65. Southwest wind 6 to 8 mph.
50% chance of rain Tuesday Night Tuesday Night... A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 46. South wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
70% chance of rain Wednesday Wednesday... Showers likely, mainly before 3pm. Mostly cloudy, with a high near 63. Light south wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 70%.
30% chance of rain Wednesday Night Wednesday Night... A chance of showers before 9pm. Partly cloudy, with a low around 38. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 58. Southwest wind 5 to 10 mph.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 36. Light southwest wind.
Mostly Sunny on Friday Friday... Mostly sunny, with a high near 57. Light west wind increasing to 5 to 9 mph in the morning.
Cloudy on Friday Night Friday Night... Partly cloudy, with a low around 35. Light west wind.
Mostly Sunny on Saturday Saturday... Mostly sunny, with a high near 56. West wind 3 to 7 mph.
Sun Almanac for Mill Valley, Massachusetts
Sunrise: 07:08 AM
Sunset: 6:02 PM
Civil Sunrise:06:40 AM
Civil Sunset: 6:30 PM
Nautical Sunrise: 06:07 AM
Nautical Sunset: 7:03 PM
Astro Sunrise: 05:35 AM
Astro Sunset: 7:35 PM
Any use of the information on this page is at your own risk. This information should not be relied upon in life-threatening situations, potential financial loss situations or in lieu of any officially disseminated information. Visit the National Weather Service for official information.