National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fitchburg, Fitchburg Municipal Airport (KFIT)

Lat: 42.55°NLon: 71.76°WElev: 348ft.

Overcast

41°F

5°C

Humidity 86%
Wind Speed W 5 mph
Barometer 30.02 in (1016.8 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 11 Mar 4:52 am EDT
Extended Forecast for

Ayer MA

  • Overnight

    Overnight: A slight chance of rain. Mostly cloudy, with a steady temperature around 47. Light northeast wind. Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A slight chance of rain. Patchy fog between 9am and noon. Otherwise, mostly cloudy, with a high near 51. Northeast wind around 6 mph. Chance of precipitation is 20%.

    High: 51 °F

    Slight Chance
    Rain and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A chance of rain, with thunderstorms also possible after 11pm. Mostly cloudy, with a temperature rising to around 58 by 5am. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 48 °F⇑

    Chance Rain

  • Thursday

    Thursday: Rain likely before 5pm, then a chance of rain and snow. Mostly cloudy, with a high near 56. West wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 56 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. West wind 6 to 8 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 44. Light west wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 44 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of rain and snow before 9pm, then a chance of rain. Mostly cloudy, with a low around 33. South wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    Low: 33 °F

    Chance
    Rain/Snow
    then Chance
    Rain

  • Saturday

    Saturday: Partly sunny, with a high near 46. West wind 10 to 16 mph, with gusts as high as 31 mph.

    High: 46 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. West wind 3 to 8 mph.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of rain. Mostly cloudy, with a steady temperature around 47. Light northeast wind. Chance of precipitation is 20%.
Wednesday
A slight chance of rain. Patchy fog between 9am and noon. Otherwise, mostly cloudy, with a high near 51. Northeast wind around 6 mph. Chance of precipitation is 20%.
Wednesday Night
A chance of rain, with thunderstorms also possible after 11pm. Mostly cloudy, with a temperature rising to around 58 by 5am. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain likely before 5pm, then a chance of rain and snow. Mostly cloudy, with a high near 56. West wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday Night
Mostly clear, with a low around 27. West wind 6 to 8 mph.
Friday
Mostly sunny, with a high near 44. Light west wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Friday Night
A chance of rain and snow before 9pm, then a chance of rain. Mostly cloudy, with a low around 33. South wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Saturday
Partly sunny, with a high near 46. West wind 10 to 16 mph, with gusts as high as 31 mph.
Saturday Night
Partly cloudy, with a low around 25. West wind 3 to 8 mph.
Sunday
Mostly cloudy, with a high near 45. Calm wind becoming southeast 5 to 7 mph in the afternoon.
Sunday Night
Rain. Low around 34. Southeast wind 5 to 8 mph. Chance of precipitation is 80%.
Monday
Rain. High near 59. Southwest wind 10 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%.
Monday Night
Rain likely. Mostly cloudy, with a low around 29. West wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Tuesday
Sunny, with a high near 40. West wind 8 to 11 mph, with gusts as high as 22 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Ayer MA
 42.56°N 71.59°W (Elev. 249 ft)
Last Update:
2:50 am EDT Mar 11, 2026
Forecast Valid:
5am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation