Acton, MA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Acton now
Loading the National Weather Service forecast…
Acton weather by the hour
Acton weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Acton.
This week in Acton
Sunrise, sunset and moon in Acton
What is the weather usually like in Acton?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 87°F average high
- Januarycoldest month · 14°F average low
- 49.7 inprecipitation per year · 1,262 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Acton: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station MAYNARD 2, MA US (USC00194580), adjusted for the elevation of Acton.
Acton weather month by month
Sunrise and sunset in Acton through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:10 AM | 4:39 PM | 9 h 28 min |
| February | 6:40 AM | 5:19 PM | 10 h 38 min |
| March | 6:55 AM | 6:53 PM | 11 h 57 min |
| April | 6:02 AM | 7:28 PM | 13 h 26 min |
| May | 5:22 AM | 8:02 PM | 14 h 40 min |
| June | 5:06 AM | 8:26 PM | 15 h 20 min |
| July | 5:20 AM | 8:22 PM | 15 h 2 min |
| August | 5:51 AM | 7:48 PM | 13 h 57 min |
| September | 6:24 AM | 6:57 PM | 12 h 32 min |
| October | 6:57 AM | 6:05 PM | 11 h 7 min |
| November | 6:35 AM | 4:25 PM | 9 h 49 min |
| December | 7:06 AM | 4:15 PM | 9 h 8 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Acton?
Acton has a hot-summer humid continental climate. The warmest month is July, with an average high of 87°F (30°C), and the coldest is January, with average lows of 14°F (-10°C).
It gets about 49.7 inches (1,262 mm) of precipitation a year. The wettest month is October and the driest is February.
The best time to visit Acton is May–June and August–September. At 259 ft of elevation, nights are mild most of the year. 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.
More about Acton
Weather in towns near Acton
Questions about the weather in Acton
What is the hottest month in Acton?
July, with an average high of 87°F (30°C).
What is the coldest month in Acton?
January, with an average low of 14°F (-10°C).
How much does it rain in Acton?
About 49.7 inches (1,262 mm) a year; the wettest month is October.
Does it snow in Acton?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Acton?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Acton have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Acton in November?
Highs average 53°F and lows 29°F, with about 3.8 inches of precipitation.
What time is sunrise in Acton?
Around 6:35 AM in mid-November, and sunset around 4:25 PM. Today’s exact times are shown above.
Where does this Acton weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Acton.
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