Chelmsford, MA weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Chelmsford now
Loading the National Weather Service forecast…
Chelmsford weather by the hour
Chelmsford weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Chelmsford.
This week in Chelmsford
Sunrise, sunset and moon in Chelmsford
What is the weather usually like in Chelmsford?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 84°F average high
- Januarycoldest month · 15°F average low
- 48.5 inprecipitation per year · 1,232 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Chelmsford: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station LOWELL, MA US (USC00194313), adjusted for the elevation of Chelmsford.
Chelmsford weather month by month
Sunrise and sunset in Chelmsford through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:10 AM | 4:38 PM | 9 h 28 min |
| February | 6:40 AM | 5:18 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 | 5:21 AM | 8:02 PM | 14 h 40 min |
| June | 5:05 AM | 8:26 PM | 15 h 21 min |
| July | 5:19 AM | 8:23 PM | 15 h 3 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 | 6:04 PM | 11 h 7 min |
| November | 6:35 AM | 4:24 PM | 9 h 49 min |
| December | 7:06 AM | 4:14 PM | 9 h 7 min |
Times for the 15th of each month, local time (America/New York).
What is the weather like in Chelmsford?
Chelmsford has a hot-summer humid continental climate. The warmest month is July, with an average high of 84°F (29°C), and the coldest is January, with average lows of 15°F (-9°C).
It gets about 48.5 inches (1,232 mm) of precipitation a year. The wettest month is October and the driest is February.
The best time to visit Chelmsford is June to September. At 246 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 Chelmsford
Weather in towns near Chelmsford
Questions about the weather in Chelmsford
What is the hottest month in Chelmsford?
July, with an average high of 84°F (29°C).
What is the coldest month in Chelmsford?
January, with an average low of 15°F (-9°C).
How much does it rain in Chelmsford?
About 48.5 inches (1,232 mm) a year; the wettest month is October.
Does it snow in Chelmsford?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Chelmsford?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Chelmsford have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Chelmsford in November?
Highs average 50°F and lows 30°F, with about 3.9 inches of precipitation.
What time is sunrise in Chelmsford?
Around 6:35 AM in mid-November, and sunset around 4:24 PM. Today’s exact times are shown above.
Where does this Chelmsford weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Chelmsford.
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