Observed 9:55 AM EDT at KFIT

Ayer, MA weather

Sunny and 50°10°, 9°5° warmer than a typical Oct 25, jacket by 7 PM.

Forecasts agree

Now 50°10°

Sunny

Wind: Calm; Up to 5 mph8 km/h through 10 PM
Dew point: 34°1°; Dry, static shocks likely
UV index: 2Low; Moderate 11 AM–4 PM · peak 4
Air quality: 41Good; PM2.5 (fine particles) · tomorrow moderate
Pressure: 30.55 inHg1035 hPa; Steady over the last 3 h

No precipitation expected in the next 2 hours.

From forecast models

Next 48 hours

Good hours for

Above 60°16° today by noon
High 66°19° today at 2 PM
Below 50°10° tonight after 8 PM
Low 33°1° tomorrow at 6 AM

This morningUp to 56°13° by 11 AM · Clear
This afternoonUp to 66°19° by 2 PM · Clear
TonightDown to 34°1° by 5 AM · Clear
Tomorrow morningUp to 60°16° by 11 AM · Partly cloudy
Tomorrow afternoonUp to 69°21° by 2 PM · Partly cloudy
Tomorrow nightDown to 45°7° by 5 AM · Partly cloudy
Tuesday morningNear 42°6° · Clear

Hourly forecast, next 48 hours, in the place's local time
Hour	Conditions	Temperature	Feels like	Precipitation	Wind	Humidity	Cloud cover	UV index
Sun 10a	Sunny	48°9° (likely 41°5° to 52°11°)	48°9°	0%	1 mph2 km/h from NW, gusts 2 mph3 km/h	51%	0%	2
Sun 11a	Sunny	56°13° (likely 47°8° to 58°14°)	56°13°	0%	2 mph3 km/h from W, gusts 2 mph4 km/h	40%	0%	3
Sun 12p	Sunny	61°16° (likely 53°12° to 61°16°)	61°16°	0%	2 mph3 km/h from W, gusts 4 mph7 km/h	32%	0%	4
Sun 1p	Sunny	64°18° (likely 58°14° to 64°18°)	64°18°	0%	3 mph5 km/h from W, gusts 7 mph12 km/h	31%	0%	4
Sun 2p	Sunny	66°19° (likely 61°16° to 66°19°)	66°19°	0%	5 mph8 km/h from SW, gusts 8 mph13 km/h	28%	0%	4
Sun 3p	Sunny	66°19° (likely 63°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	28%	0%	3
Sun 4p	Sunny	66°19° (likely 62°17° to 66°19°)	66°19°	0%	5 mph8 km/h from SW, gusts 9 mph15 km/h	28%	0%	2
Sun 5p	Sunny	63°17° (likely 58°14° to 63°17°)	63°17°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	34%	0%	1
Sun 6p	Clear	59°15° (likely 50°10° to 59°15°)	59°15°	0%	3 mph5 km/h from S, gusts 7 mph12 km/h	37%	0%	0
Sun 7p	Clear	53°12° (likely 45°7° to 53°12°)	53°12°	0%	3 mph5 km/h from SW, gusts 8 mph13 km/h	48%	0%	0
Sun 8p	Clear	48°9° (likely 41°5° to 48°9°)	48°9°	0%	2 mph3 km/h from SW, gusts 7 mph12 km/h	58%	0%	0
Sun 9p	Clear	45°7° (likely 39°4° to 45°7°)	45°7°	0%	2 mph3 km/h from SW, gusts 7 mph12 km/h	68%	0%	0
Sun 10p	Clear	43°6° (likely 38°3° to 44°7°)	43°6°	0%	1 mph2 km/h from S, gusts 8 mph13 km/h	73%	0%	0
Sun 11p	Clear	41°5° (likely 36°2° to 43°6°)	41°5°	0%	0 mph0 km/h, gusts 7 mph12 km/h	79%	12%	0
Mon 12a	Clear	40°4° (likely 35°2° to 43°6°)	40°4°	0%	1 mph2 km/h from SW, gusts 7 mph11 km/h	79%	11%	0
Mon 1a	Clear	39°4° (likely 34°1° to 42°6°)	39°4°	0%	1 mph2 km/h from W, gusts 8 mph12 km/h	82%	10%	0
Mon 2a	Clear	37°3° (likely 34°1° to 42°6°)	37°3°	0%	2 mph3 km/h from W, gusts 8 mph12 km/h	85%	19%	0
Mon 3a	Clear	36°2° (likely 34°1° to 41°5°)	36°2°	0%	1 mph2 km/h from W, gusts 8 mph13 km/h	89%	30%	0
Mon 4a	Clear	35°2° (likely 33°1° to 40°4°)	35°2°	0%	1 mph2 km/h from SW, gusts 7 mph12 km/h	89%	0%	0
Mon 5a	Clear	34°1° (likely 33°1° to 40°4°)	34°1°	0%	0 mph0 km/h, gusts 7 mph10 km/h	96%	2%	0
Mon 6a	Clear	33°1° (likely 33°1° to 40°4°)	33°1°	0%	0 mph0 km/h, gusts 6 mph10 km/h	96%	4%	0
Mon 7a	Sunny	33°1° (likely 32°0° to 40°4°)	33°1°	0%	1 mph2 km/h from W, gusts 6 mph9 km/h	96%	5%	0
Mon 8a	Sunny	36°2° (likely 34°1° to 42°6°)	36°2°	0%	1 mph2 km/h from W, gusts 7 mph11 km/h	85%	50%	0
Mon 9a	Mostly sunny	43°6° (likely 43°6° to 47°8°)	43°6°	0%	2 mph3 km/h from W, gusts 6 mph10 km/h	67%	31%	1
Mon 10a	Mostly sunny	52°11° (likely 52°11° to 56°13°)	52°11°	0%	3 mph5 km/h from W, gusts 7 mph11 km/h	48%	52%	2
Mon 11a	Mostly sunny	60°16° (likely 58°14° to 61°16°)	60°16°	0%	5 mph8 km/h from W, gusts 12 mph19 km/h	37%	29%	3
Mon 12p	Mostly sunny	65°18° (likely 62°17° to 65°18°)	65°18°	0%	6 mph10 km/h from W, gusts 13 mph22 km/h	33%	27%	4
Mon 1p	Mostly sunny	68°20° (likely 65°18° to 68°20°)	68°20°	0%	7 mph11 km/h from W, gusts 14 mph22 km/h	31%	45%	4
Mon 2p	Mostly sunny	69°21° (likely 67°19° to 69°21°)	69°21°	0%	8 mph13 km/h from W, gusts 15 mph24 km/h	31%	51%	4
Mon 3p	Mostly sunny	69°21° (likely 67°19° to 69°21°)	69°21°	0%	8 mph13 km/h from W, gusts 15 mph25 km/h	32%	44%	3
Mon 4p	Partly sunny	69°21° (likely 65°18° to 69°21°)	69°21°	0%	7 mph11 km/h from NW, gusts 16 mph26 km/h	33%	57%	2
Mon 5p	Partly sunny	67°19° (likely 63°17° to 67°19°)	67°19°	0%	6 mph10 km/h from NW, gusts 11 mph18 km/h	37%	42%	1
Mon 6p	Partly cloudy	64°18° (likely 58°14° to 64°18°)	64°18°	0%	6 mph10 km/h from NW, gusts 7 mph11 km/h	45%	54%	0
Mon 7p	Cloudy	61°16° (likely 56°13° to 61°16°)	61°16°	0%	6 mph10 km/h from NW, gusts 10 mph16 km/h	53%	60%	0
Mon 8p	Mostly cloudy	58°14° (likely 54°12° to 58°14°)	58°14°	0%	6 mph10 km/h from NW, gusts 13 mph21 km/h	64%	55%	0
Mon 9p	Mostly cloudy	56°13° (likely 52°11° to 56°13°)	56°13°	0%	6 mph10 km/h from NW, gusts 15 mph24 km/h	69%	28%	0
Mon 10p	Cloudy	54°12° (likely 51°11° to 55°13°)	54°12°	0%	6 mph10 km/h from NW, gusts 15 mph25 km/h	71%	83%	0
Mon 11p	Cloudy	53°12° (likely 51°11° to 54°12°)	53°12°	0%	6 mph10 km/h from NW, gusts 17 mph28 km/h	74%	82%	0
Tue 12a	Partly cloudy	52°11° (likely 48°9° to 52°11°)	52°11°	0%	5 mph8 km/h from NW, gusts 19 mph31 km/h	71%	64%	0
Tue 1a	Partly cloudy	50°10° (likely 46°8° to 50°10°)	48°9°	0%	5 mph8 km/h from N, gusts 20 mph32 km/h	71%	55%	0
Tue 2a	Clear	49°9° (likely 44°7° to 49°9°)	48°9°	0%	3 mph5 km/h from N, gusts 17 mph28 km/h	68%	17%	0
Tue 3a	Partly cloudy	48°9° (likely 42°6° to 48°9°)	47°8°	0%	3 mph5 km/h from N, gusts 18 mph29 km/h	65%	19%	0
Tue 4a	Mostly clear	46°8° (likely 40°4° to 47°8°)	44°7°	0%	5 mph8 km/h from N, gusts 17 mph28 km/h	71%	38%	0
Tue 5a	Mostly clear	45°7° (likely 38°3° to 45°7°)	43°6°	0%	5 mph8 km/h from N, gusts 16 mph25 km/h	70%	18%	0
Tue 6a	Clear	43°6° (likely 35°2° to 44°7°)	40°4°	0%	5 mph8 km/h from N, gusts 14 mph22 km/h	73%	3%	0
Tue 7a	Sunny	42°6° (likely 33°1° to 43°6°)	39°4°	0%	5 mph8 km/h from N, gusts 12 mph20 km/h	73%	32%	0
Tue 8a	Sunny	42°6° (likely 33°1° to 42°6°)	34°1°	0%	5 mph8 km/h from N, gusts 14 mph22 km/h	79%	1%	0
Tue 9a	Sunny	41°5° (likely 41°5° to 44°7°)	38°3°	0%	5 mph8 km/h from N, gusts 17 mph27 km/h	70%	1%	1

Days ahead

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

Today, Oct 25. Sunny. High 68°20°, low 30°−1°. Typical 59°15° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 56°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 66°19°
  Dry
3. Evening
  6 PM–midnight
  Clear, 48°9°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 34°1°
  Dry
Official NWS forecast
Today: Sunny, with a high near 68. West wind 1 to 5 mph.
Tonight: Areas of frost after 3am. Clear, with a low around 30. Southwest wind 0 to 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
64°18°–68°20°
Low, likely
26°−3°–34°1°
Typical high / low
59°15° / 36°2°
Wind
6 mph10 km/h, gusts 12 mph19 km/h
UV peak
4
Tomorrow, Oct 26. Mostly sunny. High 70°21°, low 41°5°. Typical 58°14° / 36°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Mostly sunny, 36°2°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 69°21°
  Dry
3. Evening
  6 PM–midnight
  Mostly cloudy, 58°14°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 45°7°
  Dry
Official NWS forecast
Day: Areas of frost before 9am. Sunny, with a high near 70. West wind 0 to 8 mph.
Night: Partly cloudy, with a low around 41. Northwest wind around 6 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
67°19°–70°21°
Low, likely
32°0°–41°5°
Typical high / low
58°14° / 36°2°
Wind
10 mph17 km/h, gusts 26 mph42 km/h
UV peak
4
Tuesday, Oct 27. Sunny. High 55°13°, low 26°−3°. Typical 58°14° / 36°2°. Dry. Forecasts agree.
1. Morning
  6 AM–noon
  Sunny, 42°6°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 52°11°
  Dry
3. Evening
  6 PM–midnight
  Clear, 37°3°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 28°−2°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 55. North wind around 6 mph.
Night: Widespread frost after 9pm. Mostly clear, with a low around 26. North wind around 3 mph.
Forecasts agreeIndependent forecasts are close; the range is narrow.
High, likely
52°11°–55°13°
Low, likely
26°−3°–36°2°
Typical high / low
58°14° / 36°2°
Wind
11 mph18 km/h, gusts 27 mph43 km/h
UV peak
4
Wednesday, Oct 28. Mostly sunny. High 56°13°, low 35°2°. Typical 58°14° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 29°−2°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 54°12°
  Dry
3. Evening
  6 PM–midnight
  Clear, 41°5°
  Dry
4. Overnight
  midnight–6 AM
  Partly cloudy, 40°5°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Widespread frost before 10am. Sunny, with a high near 56. Southeast wind 0 to 3 mph.
Night: Mostly clear, with a low around 35. Southwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
52°11°–56°13°
Low, likely
21°−6°–35°2°
Typical high / low
58°14° / 35°2°
Wind
7 mph11 km/h, gusts 12 mph19 km/h
UV peak
4
Thursday, Oct 29. Mostly sunny. High 66°19°, low 47°8°. Typical 57°14° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 45°7°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 65°18°
  Dry
3. Evening
  6 PM–midnight
  Clear, 54°12°
  Dry
4. Overnight
  midnight–6 AM
  Mostly clear, 53°11°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 66. Southwest wind 3 to 9 mph, with gusts as high as 21 mph.
Night: Mostly clear, with a low around 47. Southwest wind 3 to 7 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
39°4°–47°8°
Typical high / low
57°14° / 35°2°
Wind
12 mph19 km/h, gusts 35 mph56 km/h
UV peak
4
Friday, Oct 30. Mostly sunny. High 68°20°, low 42°6°. Typical 57°14° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Cloudy, 55°13°
  Dry
2. Afternoon
  noon–6 PM
  Sunny, 71°22°
  Dry
3. Evening
  6 PM–midnight
  Clear, 57°14°
  Dry
4. Overnight
  midnight–6 AM
  Clear, 44°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Sunny, with a high near 68. West wind around 6 mph.
Night: Mostly clear, with a low around 42. Northwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
68°20°–73°23°
Low, likely
42°6°–53°12°
Typical high / low
57°14° / 35°2°
Wind
12 mph19 km/h, gusts 26 mph41 km/h
UV peak
4
Saturday, Oct 31. Partly sunny. High 65°18°, low 45°7°. Typical 56°13° / 35°2°. Dry. Mostly agree.
1. Morning
  6 AM–noon
  Sunny, 43°6°
  Dry
2. Afternoon
  noon–6 PM
  Mostly sunny, 64°18°
  Dry
3. Evening
  6 PM–midnight
  Partly cloudy, 49°10°
  Dry
4. Overnight
  midnight–6 AM
  Cloudy, 45°7°
  Dry
Hours this far out come from computer models only.
Official NWS forecast
Day: Mostly sunny, with a high near 65. West wind 1 to 5 mph.
Night: Partly cloudy, with a low around 45. Southwest wind around 3 mph.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
62°17°–67°19°
Low, likely
33°1°–46°8°
Typical high / low
56°13° / 35°2°
Wind
8 mph13 km/h, gusts 17 mph28 km/h
UV peak
4
Sunday, Nov 1. Cloudy. High 69°21°, low 50°10°. Typical 56°13° / 34°1°. Dry. Forecasts differ.
1. Morning
  6 AM–noon
  Cloudy, 46°8°
  Dry
2. Afternoon
  noon–6 PM
  Cloudy, 70°21°
  Dry
3. Evening
  6 PM–midnight
  Cloudy, 61°16°
  20% chance · 0.04 in0.9 mm
4. Overnight
  midnight–6 AM
  Cloudy, 57°14°
  30% chance · 0.07 in1.9 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
65°18°–72°22°
Low, likely
47°8°–55°13°
Typical high / low
56°13° / 34°1°
Wind
8 mph13 km/h, gusts 22 mph35 km/h
UV peak
3
Monday, Nov 2. Drizzle. High 65°18°, low 53°12°. Typical 56°13° / 34°1°. Rain 0.2 in5.1 mm, 40% chance. Mostly agree.
1. Morning
  6 AM–noon
  Drizzle, 60°15°
  30% chance · 0.04 in1.1 mm
2. Afternoon
  noon–6 PM
  Drizzle, 65°18°
  30% chance · 0.03 in0.7 mm
3. Evening
  6 PM–midnight
  Drizzle, 58°14°
  30% chance · 0.04 in0.9 mm
4. Overnight
  midnight–6 AM
  Drizzle, 53°12°
  20% chance · 0.13 in3.4 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.
Mostly agreeIndependent forecasts are fairly close; small surprises are possible.
High, likely
63°17°–68°20°
Low, likely
46°8°–62°17°
Typical high / low
56°13° / 34°1°
Wind
16 mph25 km/h, gusts 34 mph54 km/h
UV peak
2
Tuesday, Nov 3. Drizzle. High 57°14°, low 46°8°. Typical 55°13° / 34°1°. Rain 0.07 in1.8 mm, 30% chance. Forecasts differ.
1. Morning
  6 AM–noon
  Drizzle, 52°11°
  20% chance · 0.05 in1.3 mm
2. Afternoon
  noon–6 PM
  Cloudy, 58°15°
  20% chance
3. Evening
  6 PM–midnight
  Cloudy, 47°8°
  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
47°8°–69°21°
Low, likely
34°1°–59°15°
Typical high / low
55°13° / 34°1°
Wind
13 mph20 km/h, gusts 34 mph54 km/h
UV peak
2

10 days15 days30 days

The outlook

Today
Dry, high 68°, low 30°.
Tomorrow
Dry, high 70°, low 41°.
Tuesday
Dry, high 55°, low 26°, cooling off.
Rest of week
Mostly dry, highs 56–69°.

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

Rivers

NOAA river gauges within 25 mi

Squannacook River at West Groton

6.2 mi

Below flood stage

Level: 1.9 ft
Flow: 34 cfs

Forecast peak 1.9 ft Sun 2 PM

Reading from Sun 9 AM · NWS gauge page

Nashua River at East Pepperell

7.3 mi

Below flood stage

Level: 1.5 ft
Flow: 258 cfs

Forecast peak 1.4 ft Sun 2 PM

Reading from Sun 8:45 AM · NWS gauge page

North Nashua River at Fitchburg

10 mi

Below flood stage

Level: 2.6 ft
Flow: 48 cfs

Forecast peak 2.6 ft Sun 2 PM

Reading from Sun 8:30 AM · NWS gauge page

Assabet River at Maynard

11 mi

Below flood stage

Level: 2.1 ft
Flow: 105 cfs

Forecast peak 2.1 ft Sun 2 PM

Reading from Sun 8:15 AM · NWS gauge page

For your home

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

Heating this week

About 79% less heating than a typical week.

This week 27Typical 130

Heating degree days, base 65°F

Heat-pump hours, next 7 days

h below 47°F: 19
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 8 hours are near freezing and damp, when outdoor units defrost more often.

Comfort

Dry air outside (dew point 34°F).

Open the windows?

Today, 12:00 PM–5:00 PM

Good stretch to open the windows.

Is this typical?

LOWELL · official normals 1991–2020 · records 1885–2026

Oct 25, today vs a typical year

Today’s expected high is 9°5° warmer than typical.

Last 7 days vs normal

On average 0° colder than normal (daily mean temperature).

−6°−4°MonOct 19
−1°TueOct 20
+4°+2°WedOct 21
+3°+2°ThuOct 22
+4°+2°FriOct 23
−4°−2°SatOct 24
—SunOct 25

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

Sun & moon

Sun

Daylight: 10 h 37 min; Losing 2 min 39 s a day; shortest Dec 21, 1 h 34 min less
Golden hour: 5:09–6:06 PM; Morning 6:53–7:50 AM
Blue hour: 6:06–6:17 PM; Morning 6:42–6:53 AM; first light 6:42 AM

Stars tonight? Fair

Clear 6:17 PM–3 AM, but the moon is 100% lit and up.

Moon

Waxing gibbous

99% lit · growing

Today: sets 6:33 AM · rises 5:12 PM
Full moon: Oct 26
New moon: Nov 9

Looking northwest from Ayer. The highest point on the skyline is about 4,000 ft, 20 mi away.Skyline from USGS elevation data, heights drawn up to 6× taller. Sky, sun and moon as they are now.

Ayer, MA weather

Next 2 hours

Next 48 hours

Days ahead

The outlook

Today

Tomorrow

Tuesday

Rest of week

What changed since yesterday

Radar

Rivers

Squannacook River at West Groton

Nashua River at East Pepperell

North Nashua River at Fitchburg

Assabet River at Maynard

For your home

Heating this week

Heat-pump hours, next 7 days

Comfort

Open the windows?

Is this typical?

Oct 25, today vs a typical year

Last 7 days vs normal

Sun & moon

Sun

Stars tonight? Fair

Moon