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Weather

Boston weather

Live rain radar, current conditions, an hour-by-hour outlook and a seven-day forecast for Boston, with original writing about the city's climate from The Daily Boston.

Today's briefing

# Boston Weather Briefing It's a crisp 18 degrees out there right now, but you'll feel it's closer to 20, and we're headed for a lovely autumn day with a high of 26 and virtually no chance of rain (just 3%). With a UV index of 8, sunscreen is your friend if you're spending time outdoors. Grab a light layers approach this morning, then peel back as the day warms up. Looking ahead to the weekend, Saturday and Sunday will both push towards a toasty 35 degrees, though there's a decent chance of showers Saturday (38%) and a slightly lower chance Sunday (31%), so keep an brolly handy.

29°

Clear · feels like 32°

Today
33° / 16°
Humidity
51%
Wind
7 km/h S
UV index
6 · Moderate
Sunrise
5:10 am
Sunset
8:25 pm
Updated
10:30 am

Next 24 hours

  1. Now

    28°

    0%

  2. 11am

    29°

    0%

  3. 12pm

    31°

    0%

  4. 1pm

    32°

    0%

  5. 2pm

    33°

    1%

  6. 3pm

    33°

    3%

  7. 4pm

    33°

    4%

  8. 5pm

    32°

    8%

  9. 6pm

    32°

    11%

  10. 7pm

    30°

    11%

  11. 8pm

    28°

    12%

  12. 9pm

    26°

    9%

  13. 10pm

    26°

    8%

  14. 11pm

    25°

    12%

  15. 12am

    25°

    19%

  16. 1am

    24°

    14%

  17. 2am

    23°

    22%

  18. 3am

    22°

    12%

  19. 4am

    22°

    6%

  20. 5am

    21°

    9%

  21. 6am

    22°

    8%

  22. 7am

    24°

    6%

  23. 8am

    26°

    4%

  24. 9am

    29°

    9%

Live rain radar

Drag to pan, scroll the page over it

Animated rain radar via RainViewer (Bureau of Meteorology sources). Full BOM radar loop.

Seven-day forecast

  1. Mon

    Overcast

    33° 16°

    Rain 12%

  2. Tue

    Thunderstorm

    37° 21°

    Rain 22%

  3. Wed

    Thunderstorm

    37° 25°

    Rain 8%

  4. Thu

    Drizzle

    37° 25°

    Rain 12%

  5. Fri

    Drizzle

    37° 23°

    Rain 37%

  6. Sat

    Drizzle

    28° 22°

    Rain 19%

  7. Sun

    Overcast

    24° 21°

    Rain 21%

Air quality

67

Moderate

US AQI

PM2.5
19
PM10
19
Ozone
140

Air quality by Open-Meteo (CAMS), in µg/m³.

Sun and moon

Sunrise
5:10 am
Sunset
8:25 pm
Daylight
15h 15m

Full moon

100% lit

From the weather desk

Boston weather, explained

How to read the Boston forecast

A good forecast is really three views at once. The current panel tells you what it feels like outside right now, which is what matters before you head out the door. The hourly strip is for planning the next part of your day: when the rain band arrives, when the wind picks up, when it is warm enough to walk. The seven-day outlook is for the week ahead, and it is most reliable in the first three or four days. Read it from the top down and you will almost always have what you need for Boston.

What the UV index actually means

The UV index rates the strength of the sun's ultraviolet radiation on a simple scale. Below 3 is low and you can be outside safely without protection. From 3 to 7 is moderate to high, the point at which sunburn becomes likely within an hour, so a hat and sunscreen earn their keep. Above 8 is very high to extreme, and skin can burn in minutes around the middle of the day. The index peaks at solar noon, not at the hottest part of the afternoon, so the safest habit is to check the number rather than judge by the temperature.

Why the overnight low matters as much as the high

Daytime maximums get the headlines, but the overnight minimum shapes how the day actually feels. A cold night means a slow, crisp start and, on clear evenings, the chance of fog or frost before dawn. A mild night means the warmth carries over and the morning is comfortable from the outset. Clear skies let heat escape and push the low down; cloud cover traps it and keeps the night warmer. That is why two days with the same maximum can feel completely different depending on the night that came before.

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Weather data by Open-Meteo. The Daily Boston is independent and not affiliated with any government weather agency.