Observed 6:25 AM EDT at KBOS

Cambridge, MA weather

Clear and 45°7°.

Forecasts agree

Now 45°7°

Clear · Feels like 40°4°

Wind: 9 mph15 km/h; From the north-northwest. Gusts to 25 mph40 km/h around 10 AM
Dew point: 28°−2°; Dry, static shocks likely
UV index: 0Low; Moderate 12–2 PM · peak 3
Air quality: 21Good; Main pollutant: Ozone
Pressure: 30.27 inHg1025 hPa; Rising · +0.08 inHg+2.8 hPa in 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

About the same as this time yesterday (47°8° then, 45°7° now)

Good hours for

Above 50°10° today by 11 AM
High 55°13° today at 2 PM

This morningUp to 51°11° by 11 AM · Clear
This afternoonNear 53°12° · Clear
TonightDown to 36°2° by 5 AM · Clear
Tomorrow morningUp to 51°11° by 11 AM · Clear
Tomorrow afternoonUp to 59°15° by 2 PM · Clear
Tomorrow nightDown to 34°1° by 2 AM · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Fri 7a	Sunny	41°5° (likely 41°5° to 42°6°)	34°1°	0%	12 mph19 km/h from N, gusts 16 mph25 km/h	65%	0%	0
Fri 8a	Sunny	40°4° (likely 40°4° to 43°6°)	33°1°	0%	12 mph19 km/h from N, gusts 18 mph30 km/h	67%	0%	0
Fri 9a	Sunny	45°7° (likely 44°7° to 46°8°)	39°4°	0%	12 mph19 km/h from N, gusts 23 mph37 km/h	55%	0%	1
Fri 10a	Sunny	48°9° (likely 47°8° to 48°9°)	43°6°	0%	13 mph21 km/h from N, gusts 25 mph40 km/h	47%	0%	1
Fri 11a	Sunny	51°11° (likely 49°9° to 51°11°)	51°11°	0%	13 mph21 km/h from N, gusts 22 mph35 km/h	42%	0%	2
Fri 12p	Sunny	53°12° (likely 51°11° to 53°12°)	53°12°	0%	12 mph19 km/h from N, gusts 19 mph31 km/h	38%	0%	3
Fri 1p	Sunny	54°12° (likely 52°11° to 54°12°)	54°12°	0%	12 mph19 km/h from N, gusts 18 mph29 km/h	35%	0%	3
Fri 2p	Sunny	55°13° (likely 54°12° to 55°13°)	55°13°	0%	10 mph16 km/h from N, gusts 17 mph28 km/h	32%	0%	2
Fri 3p	Sunny	55°13° (likely 54°12° to 56°13°)	55°13°	0%	9 mph14 km/h from N, gusts 16 mph26 km/h	32%	0%	2
Fri 4p	Sunny	54°12° (likely 54°12° to 56°13°)	54°12°	0%	9 mph14 km/h from N, gusts 15 mph24 km/h	35%	0%	1
Fri 5p	Sunny	52°11° (likely 52°11° to 55°13°)	52°11°	0%	8 mph13 km/h from NE, gusts 11 mph18 km/h	38%	0%	0
Fri 6p	Clear	50°10° (likely 48°9° to 51°11°)	47°8°	0%	7 mph11 km/h from N, gusts 9 mph14 km/h	42%	0%	0
Fri 7p	Clear	48°9° (likely 46°8° to 48°9°)	45°7°	0%	6 mph10 km/h from N, gusts 7 mph11 km/h	47%	0%	0
Fri 8p	Clear	46°8° (likely 44°7° to 46°8°)	44°7°	0%	5 mph8 km/h from N, gusts 6 mph10 km/h	53%	0%	0
Fri 9p	Clear	44°7° (likely 42°6° to 44°7°)	42°6°	0%	3 mph5 km/h from N, gusts 4 mph6 km/h	58%	0%	0
Fri 10p	Clear	42°6° (likely 41°5° to 43°6°)	40°4°	0%	3 mph5 km/h from N, gusts 4 mph6 km/h	62%	0%	0
Fri 11p	Clear	41°5° (likely 39°4° to 43°6°)	41°5°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	65%	0%	0
Sat 12a	Clear	40°4° (likely 38°3° to 42°6°)	40°4°	0%	2 mph3 km/h from N, gusts 5 mph8 km/h	64%	5%	0
Sat 1a	Clear	39°4° (likely 37°3° to 39°4°)	37°3°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	67%	2%	0
Sat 2a	Clear	38°3° (likely 36°2° to 38°3°)	36°2°	0%	3 mph5 km/h from NW, gusts 6 mph10 km/h	67%	2%	0
Sat 3a	Clear	37°3° (likely 35°2° to 37°3°)	34°1°	0%	3 mph5 km/h from NW, gusts 6 mph9 km/h	70%	8%	0
Sat 4a	Mostly clear	37°3° (likely 34°1° to 37°3°)	34°1°	0%	3 mph5 km/h from NW, gusts 5 mph8 km/h	67%	15%	0
Sat 5a	Clear	36°2° (likely 33°1° to 37°3°)	33°1°	0%	3 mph5 km/h from NW, gusts 5 mph7 km/h	69%	31%	0
Sat 6a	Clear	34°1° (likely 33°1° to 36°2°)	31°−1°	0%	3 mph5 km/h from NW, gusts 5 mph7 km/h	75%	10%	0
Sat 7a	Sunny	34°1° (likely 32°0° to 36°2°)	31°−1°	0%	3 mph5 km/h from NW, gusts 4 mph6 km/h	75%	11%	0
Sat 8a	Sunny	34°1° (likely 33°1° to 37°3°)	31°−1°	0%	3 mph5 km/h from NW, gusts 4 mph6 km/h	78%	8%	0
Sat 9a	Sunny	39°4° (likely 39°4° to 41°5°)	37°3°	0%	3 mph5 km/h from NW, gusts 4 mph7 km/h	64%	6%	1
Sat 10a	Sunny	45°7° (likely 45°7° to 47°8°)	45°7°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	51%	11%	2
Sat 11a	Sunny	51°11° (likely 50°10° to 51°11°)	51°11°	0%	2 mph3 km/h from W, gusts 5 mph8 km/h	41%	10%	3
Sat 12p	Sunny	55°13° (likely 53°12° to 55°13°)	55°13°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	35%	3%	4
Sat 1p	Sunny	58°14° (likely 55°13° to 58°14°)	58°14°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	32%	4%	4
Sat 2p	Sunny	59°15° (likely 56°13° to 59°15°)	59°15°	0%	3 mph5 km/h from W, gusts 8 mph14 km/h	30%	3%	4
Sat 3p	Sunny	59°15° (likely 56°13° to 60°16°)	59°15°	0%	2 mph3 km/h from NW, gusts 8 mph12 km/h	32%	2%	3
Sat 4p	Sunny	59°15° (likely 56°13° to 60°16°)	59°15°	0%	1 mph2 km/h from NW, gusts 7 mph12 km/h	32%	1%	2
Sat 5p	Sunny	57°14° (likely 54°12° to 59°15°)	57°14°	0%	0 mph0 km/h, gusts 6 mph9 km/h	35%	0%	1
Sat 6p	Clear	54°12° (likely 50°10° to 54°12°)	54°12°	0%	0 mph0 km/h, gusts 2 mph3 km/h	40%	0%	0
Sat 7p	Clear	52°11° (likely 48°9° to 52°11°)	52°11°	0%	1 mph2 km/h from SW, gusts 3 mph5 km/h	43%	0%	0
Sat 8p	Clear	49°9° (likely 45°7° to 49°9°)	49°9°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	48%	0%	0
Sat 9p	Clear	46°8° (likely 43°6° to 47°8°)	46°8°	0%	1 mph2 km/h from SW, gusts 5 mph9 km/h	53%	0%	0
Sat 10p	Clear	43°6° (likely 42°6° to 46°8°)	43°6°	0%	2 mph3 km/h from SW, gusts 3 mph5 km/h	60%	0%	0
Sat 11p	Clear	41°5° (likely 40°4° to 46°8°)	41°5°	0%	2 mph3 km/h from W, gusts 5 mph7 km/h	65%	0%	0
Sun 12a	Clear	38°3° (likely 38°3° to 43°6°)	38°3°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	67%	0%	0
Sun 1a	Clear	36°2° (likely 36°2° to 43°6°)	36°2°	0%	2 mph3 km/h from W, gusts 6 mph9 km/h	69%	0%	0
Sun 2a	Clear	34°1° (likely 34°1° to 44°7°)	34°1°	0%	2 mph3 km/h from W, gusts 5 mph9 km/h	69%	0%	0
Sun 3a	Clear	34°1° (likely 34°1° to 47°8°)	34°1°	0%	2 mph3 km/h from W, gusts 4 mph6 km/h	75%	0%	0
Sun 4a	Clear	34°1° (likely 33°1° to 46°8°)	34°1°	0%	2 mph3 km/h from W, gusts 3 mph6 km/h	82%	0%	0
Sun 5a	Clear	34°1° (likely 32°0° to 46°8°)	34°1°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	89%	0%	0
Sun 6a	Clear	34°1° (likely 31°−1° to 45°7°)	34°1°	0%	2 mph3 km/h from W, gusts 3 mph5 km/h	85%	0%	0

Days ahead

Shaded: typical range for these dates (1991–2020)

Today, Oct 23. Sunny. High 55°13°, low 34°1°. Typical 60°16° / 45°7°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 40°4°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 55°13°
  Dry
3. Evening
  6 PM–midnight
  Clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 36°2°
  Dry
Official NWS forecast
Today: Sunny, with a high near 55. North wind 8 to 13 mph.
Tonight: Patchy frost after 5am. Clear, with a low around 34. North wind 2 to 7 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
54°12°–56°13°
Low, likely
34°1°–41°5°
Typical high / low
60°16° / 45°7°
Wind
13 mph21 km/h, gusts 29 mph47 km/h
UV peak
4
Tomorrow, Oct 24. Mostly sunny. High 59°15°, low 34°1°. Typical 59°15° / 45°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 34°1°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 59°15°
  Dry
3. Evening
  6 PM–midnight
  Clear, 49°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Day: Patchy frost before 9am. Sunny, with a high near 59. Northwest wind 0 to 3 mph.
Night: Patchy frost after 1am. Clear, with a low around 34. West wind around 2 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
56°13°–60°16°
Low, likely
32°0°–35°2°
Typical high / low
59°15° / 45°7°
Wind
6 mph9 km/h, gusts 11 mph18 km/h
UV peak
4
Sunday, Oct 25. Sunny. High 64°18°, low 38°3°. Typical 59°15° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 38°3°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 51°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Patchy frost before 7am. Sunny, with a high near 64. Southwest wind around 3 mph.
Night: Clear, with a low around 38. Southwest wind around 5 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
61°16°–66°19°
Low, likely
32°0°–40°4°
Typical high / low
59°15° / 44°7°
Wind
8 mph12 km/h, gusts 16 mph25 km/h
UV peak
4
Monday, Oct 26. Sunny. High 68°20°, low 43°6°. Typical 59°15° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 69°20°
  Dry
3. Evening
  6 PM–midnight
  Clear, 58°15°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 49°9°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68. West wind around 5 mph.
Night: Mostly clear, with a low around 43. Northwest wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–71°22°
Low, likely
38°3°–45°7°
Typical high / low
59°15° / 44°7°
Wind
9 mph14 km/h, gusts 17 mph27 km/h
UV peak
4
Tuesday, Oct 27. Mostly sunny. High 54°12°, low 34°1°. Typical 58°14° / 44°7°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 43°6°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 37°3°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 54. North wind 5 to 9 mph.
Night: Mostly clear, with a low around 34. Northeast wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
53°12°–56°13°
Low, likely
34°1°–43°6°
Typical high / low
58°14° / 44°7°
Wind
10 mph17 km/h, gusts 25 mph40 km/h
UV peak
3
Wednesday, Oct 28. Partly sunny. High 54°12°, low 37°3°. Typical 58°14° / 44°7°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 53°12°
  Dry
3. Evening
  6 PM–midnight
  Mostly clear, 46°8°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 42°6°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 54. Northeast wind around 5 mph.
Night: Partly cloudy, with a low around 37. South wind around 3 mph.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
50°10°–55°13°
Low, likely
32°0°–39°4°
Typical high / low
58°14° / 44°7°
Wind
9 mph14 km/h, gusts 15 mph24 km/h
UV peak
4
Thursday, Oct 29. Partly sunny. High 60°16°, low 43°6°. Typical 58°14° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Partly sunny, 44°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 55°13°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 52°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 60. Southwest wind 2 to 7 mph.
Night: Partly cloudy, with a low around 43. Southwest wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
60°16°–65°18°
Low, likely
38°3°–46°8°
Typical high / low
58°14° / 43°6°
Wind
14 mph22 km/h, gusts 31 mph50 km/h
UV peak
4
Friday, Oct 30. Cloudy. High 67°19°, low 50°10°. Typical 57°14° / 43°6°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 53°12°
  Dry
2. Afternoon
  noon–6 PM
  Partly sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 48°9°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–69°21°
Low, likely
49°9°–52°11°
Typical high / low
57°14° / 43°6°
Wind
11 mph18 km/h, gusts 27 mph44 km/h
UV peak
3
Saturday, Oct 31. Cloudy. High 58°14°, low 44°7°. Typical 57°14° / 43°6°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 47°8°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 58°14°
  Dry
3. Evening
  6 PM–midnight
  Clear, 50°10°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 40°5°
  Dry
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
51°11°–70°21°
Low, likely
38°3°–53°12°
Typical high / low
57°14° / 43°6°
Wind
13 mph20 km/h, gusts 30 mph48 km/h
UV peak
3
Sunday, Nov 1. Drizzle. High 61°16°, low 45°7°. Typical 57°14° / 42°6°. Rain 0.05 in1.3 mm, 20% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Sunny, 40°5°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 57°14°
  Dry
3. Evening
  6 PM–midnight
  Drizzle, 52°11°
  20% chance · 0.02 in0.5 mm
Hours this far out come from computer models only.
The National Weather Service writes about seven days ahead; this day is our model forecast only.
Forecasts differIndependent forecasts disagree; expect changes and plan for the range.
High, likely
55°13°–65°18°
Low, likely
36°2°–54°12°
Typical high / low
57°14° / 42°6°
Wind
14 mph23 km/h, gusts 38 mph61 km/h

10 days15 days30 days

The outlook

Today
Dry, high 55°, low 34°.
Tomorrow
Dry, high 59°, low 34°, warming up.
Sunday
Dry, high 64°, low 38°, warming up.
Rest of week
Mostly dry, highs 54–68°.

Want the meteorologists’ reasoning? Read the NWS forecast discussion (BOX) (opens in a new tab)

What changed since yesterday

No meaningful changes from yesterday’s forecast.

Radar

Radar data: NOAA MRMS, rendered by forecast.blue

Radar loads when scrolled into view

Full-screen radar

For your home

What this week’s weather means for heating, cooling, pipes and fresh air.

Heating this week

About 59% less heating than a typical week.

This week 39Typical 95

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 27
h below 17°F: 0
h below 5°F: 0

47, 17 and 5°F are the test points heat pumps are rated at. About 3 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 28°F).

Open the windows?

No stretch in the next few days is comfortable enough outside, by temperature, dew point and air quality.

Is this typical?

Boston Area · official normals 1991–2020 · records 1872–2026

Oct 23, today vs a typical year

Today’s expected high is 5°3° colder than typical.

Last 7 days vs normal

On average 3°2° colder than normal (daily mean temperature).

−4°−2°SatOct 17
−9°−5°SunOct 18
−5°−3°MonOct 19
±0°TueOct 20
−2°−1°WedOct 21
+3°+2°ThuOct 22
—FriOct 23

Cambridge weather by month: normals, records, snow and freeze dates

Sun & moon

Sun

Daylight: 10 h 43 min; Losing 2 min 44 s a day; shortest Dec 21, 1 h 39 min less
Golden hour: 5:11–6:07 PM; Morning 6:49–7:45 AM
Blue hour: 6:07–6:18 PM; Morning 6:38–6:49 AM; first light 6:38 AM

Stars tonight? Fair

Clear 6:18 PM–5 AM, but the moon is 95% lit and up.

Moon

Waxing gibbous

91% lit · growing

Today: sets 4:06 AM · rises 4:23 PM
Full moon: Oct 26
New moon: Nov 9

Looking east from Cambridge. Water in view.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.