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Lexington, MA 02421 Weather

It is 61°F and clear in Lexington, MA 02421, observed at 7:45 PM EDT. Tonight: Partly Cloudy, low 53°F. Hourly and 10-day forecast from the National Weather Service. Times are local (EDT).

Lexington, MA 02421 current weather

61°F

Clear

H -- / L 53°Feels like 61°

Observed at Laurence G Hanscom Field Airport (3 mi away), 10/29/2026, 7:45 PM EDT

1 active alert

From the National Weather Service for this forecast zone or county

State alerts

Moderate1Possible threat to life or property

Hourly forecast

NWS, updated 10/29/2026, 11:28 AM PT

  1. Now57°
  2. 9 PM56°
  3. 10 PM55°
  4. 11 PM55°
  5. 12 AM55°Fri
  6. 1 AM55°
  7. 2 AM55°
  8. 3 AM55°
  9. 4 AM55°
  10. 5 AM54°
  11. 6 AM54°
  12. 7 AM54°
  13. 8 AM54°
  14. 9 AM56°
  15. 10 AM59°
  16. 11 AM62°
  17. 12 PM63°
  18. 1 PM63°
  19. 2 PM63°
  20. 3 PM62°
  21. 4 PM61°
  22. 5 PM58°
  23. 6 PM56°
  24. 7 PM53°
  25. 8 PM52°
  26. 9 PM50°
  27. 10 PM50°
  28. 11 PM48°
  29. 12 AM47°Sat
  30. 1 AM46°
  31. 2 AM46°
  32. 3 AM45°
  33. 4 AM44°
  34. 5 AM44°
  35. 6 AM43°
  36. 7 AM41°
  37. 8 AM41°
  38. 9 AM42°
  39. 10 AM45°
  40. 11 AM48°
  41. 12 PM50°
  42. 1 PM52°
  43. 2 PM54°
  44. 3 PM55°
  45. 4 PM55°
  46. 5 PM54°
  47. 6 PM51°
  48. 7 PM47°

10-day forecast

Tap a day for details

  • Today10/29Low 53°High

    Tonight: Partly cloudy, with a low around 53. Southwest wind around 8 mph.

    Partly Cloudy
  • Fri10/30Low 41°High 66°

    Friday: Sunny. High near 66, with temperatures falling to around 58 in the afternoon. West wind 6 to 14 mph, with gusts as high as 26 mph.

    Friday Night: Clear, with a low around 41. Northwest wind around 13 mph, with gusts as high as 24 mph.

    Sunny
  • Sat10/31Low 31°High 56°

    Saturday: Sunny, with a high near 56. Northwest wind 3 to 10 mph.

    Saturday Night: Mostly clear, with a low around 31. Northwest wind around 2 mph.

    Sunny
  • Sun11/1Low 40°High 60°

    Sunday: Sunny, with a high near 60. West wind around 5 mph.

    Sunday Night: Mostly clear, with a low around 40. Southwest wind around 5 mph.

    Sunny
  • Mon11/2Low 46°High 67°

    Monday: Mostly sunny, with a high near 67. Southwest wind around 8 mph.

    Monday Night: Partly cloudy, with a low around 46. West wind around 5 mph.

    Mostly Sunny
  • Tue11/315% chance of precipitationLow 46°High 63°

    Tuesday: Mostly sunny, with a high near 63. Northeast wind around 6 mph.

    Tuesday Night: A slight chance of rain showers after 10pm. Mostly cloudy, with a low around 46. East wind around 5 mph.

    Mostly Sunny
  • Wed11/415% chance of precipitationLow 48°High 64°

    Wednesday: Partly sunny, with a high near 64. Southeast wind around 7 mph.

    Wednesday Night: A slight chance of rain showers after 5am. Mostly cloudy, with a low around 48. South wind around 5 mph.

    Partly Sunny
  • Thu11/532% chance of precipitationLow High 67°

    Thursday: A chance of rain showers before 5pm, then a chance of rain. Partly sunny, with a high near 67. South wind 5 to 9 mph, with gusts as high as 21 mph.

    Chance Rain Showers then Chance Light Rain
  • Fri11/6Model blend51% chance of precipitationLow 43°High 65°

    Friday: Chance of rain. High near 65°. Low that night near 43°. About 0.42 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

  • Sat11/7Model blend32% chance of precipitationLow 34°High 60°

    Saturday: Chance of rain. High near 60°. Low that night near 34°. About 0.25 in of precipitation.

    Computer model guidance from the NOAA National Blend of Models, not a forecast written by NWS forecasters. Expect changes this far out.

Forecast for 42.444, -71.245 from the NWS BOX office, updated 10/29/2026, 11:28 AM PT · Official forecast on weather.gov

Days 9 to 10: NOAA National Blend of Models, station KBED (Bedford/Hanscom Fld, 3 mi), model run 10/29/2026, 4:00 PM EDT

From the National Weather Service; may be delayed. Not for life-safety decisions. In an emergency, call 911.

Next 6 hours

NWS hourly forecast

  1. Now57°Clear0%8 mph
  2. 9 PM56°Clear0%8 mph
  3. 10 PM55°Clear0%8 mph
  4. 11 PM55°Clear0%8 mph
  5. 12 AM55°Mostly Clear1%8 mph
  6. 1 AM55°Mostly Clear2%7 mph

Hourly details

Next 7 days: temperature chart, feels like, rain and snow amounts, sky cover, wind and gustsShow

Radar and satellite

National radar

NEXRAD (up to 24 hours) and GOES

Latest

Frequently asked questions

What is the weather in Lexington, MA 02421 right now?
The latest observation from Laurence G Hanscom Field Airport was 61°F and clear, reported at 10/29/2026, 7:45 PM EDT.
Will it rain in Lexington, MA 02421 in the next 24 hours?
The NWS hourly forecast does not show any hour with a 50% or higher chance of precipitation in the next 24 hours.
What is the 10-day forecast for Lexington, MA 02421?
The first 8 days come from the National Weather Service forecast. Days 9 to 10 (Nov 6 to Nov 7) come from the NOAA National Blend of Models, with highs of 60°F to 65°F and up to a 51% chance of precipitation. Model guidance this far out often changes.
What time is sunrise and sunset in Lexington, MA 02421 today?
Sunrise is about 7:15 AM EDT and sunset is about 5:42 PM EDT (calculated for the center of the area, within a few minutes).
What is the normal October weather in Lexington, MA 02421?
At Bedford Hanscom Fld, the 1991 to 2020 normal high in October is 64°F and the normal low is 41°F.

Nearby hazards

Massachusetts hazards

Severe storm and flash flood outlooks, expected rain, river flooding and wildfires near this area

  • Severe storm outlook today:No thunderstorm risk area over this locationOutlook map
  • Excessive rainfall outlook (flash flood risk):Could not check the Weather Prediction Center outlook right now.
  • River gauges within 40 miles at or above flood stage: None reported
  • Active wildfires within 50 miles: Bellevue Pond Fire (1 acre), FD060043 Fire (0 acres), FD060044 Fire (0 acres), FD140033 Fire (0 acres)

UV and air quality forecast

EPA and AirNow

UV index today (Lexington)
3Moderate
AQI forecast tomorrow (Boston Metro)
50GoodPM2.5
AQI forecast tomorrow (Boston Metro)
40GoodPM2.5

UV index guide · Air quality

Drought

By county

Middlesex County, week of 10/27/2026

55% of the county is abnormally dry. No drought.

Tides nearby

NOAA tide stations

Beaches nearby

EPA BEACON beaches

Sun and moon

Local time, center of the area

Sunrise
7:15 AM
Sunset
5:42 PM
Daylight
10 hr 27 min
Moon
Waning Gibbous 84% lit
First light (civil dawn)
6:46 AM
Last light (civil dusk)
6:11 PM
Moonrise
7:59 PM
Moonset
11:32 AM

Normal October weather

Climate

Normal October high 64°, low 41°, precipitation 4.24 in for the month. 1991 to 2020 normals at Bedford Hanscom Fld, 3 mi away.

Other places nearby

Data sources

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About this data

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